FREE ENGLISH HIOKI DT4281 (01) PDF USER GUIDE
FREE ENGLISH HIOKI DT4281 (01) PDF USER MANUAL
FREE ENGLISH HIOKI DT4281 (01) PDF OWNER GUIDE
FREE ENGLISH HIOKI DT4281 (01) PDF OWNER MANUAL
FREE ENGLISH HIOKI DT4281 (01) PDF REFERENCE GUIDE
FREE ENGLISH HIOKI DT4281 (01) PDF INSTRUCTION GUIDE
FREE ENGLISH HIOKI DT4281 (01) PDF REFERENCE MANUAL
FREE ENGLISH HIOKI DT4281 (01) PDF INSTRUCTION MANUAL
FREE ENGLISH HIOKI DT4281 (01) PDF OPERATING INSTRUCTIONS
CLICK HERE TO DOWNLOAD HIOKI DT4281 (01) PDF MANUAL
If this is not the document you want for this product, click here to see if we have any other documents for this product.
HIOKI DT4281 (01) PDF SUMMARY:
What are the steps for installing and connecting the instrument for measurement?
Insert the batteries. Perform the startup check.
What are the steps for measurement?
Turn on the power and select the measurement function. Attach the test leads to the measurement terminals. As necessary, perform zero adjustment. Connect the test leads to the measurement object. As necessary, hold the display of the measured value. As necessary, save the measured value.
What is the final step in the measurement process?
Move the test leads away from the measurement object and then turn off the power.
What should I do before replacing the batteries?
To avoid electric shock, disconnect the test leads from the object to be measured.
What should I NOT do with batteries?
To avoid the possibility of explosion, do not short circuit, charge, disassemble, or incinerate batteries. Do no mix new and old batteries, or different types of batteries. Do not use batteries after their recommended expiry date. Do not allow used batteries to remain in the instrument.
What should I do after battery replacement?
After battery replacement but before using the instrument, reattach and screw down the battery cover.
What should you observe when installing batteries?
Be careful to observe the battery polarity during installation.
What should you do to protect the instrument from corrosion due to battery leakage?
To avoid corrosion from battery leakage and/or damage to the instrument, remove the batteries from the instrument if it is to be kept in storage for an extended period.
What do you do when the battery charge diminishes?
The indicator appears when the battery charge diminishes. Replace the batteries as soon as possible.
What should you be sure of after using the instrument?
After use, be sure to turn off the instrument.
What should you do with old batteries?
Handle and dispose of batteries in accordance with local regulations.
What items are needed to replace the batteries?
Phillips screwdriver. Alkaline (LR6) battery or manganese (R6) battery × 4
What is the first step for replacing the batteries?
Remove the test leads from the instrument.
What is the second step for replacing the batteries?
Set the rotary switch to OFF.
What is the third step for replacing the batteries?
Using a Phillips screwdriver, remove the screws (2 locations) from the battery cover on the rear of the instrument.
What is the fourth step for replacing the batteries?
Remove the battery cover.
What should you do when replacing the old batteries with new ones?
When replacing the batteries, remove all old batteries. Insert 4 new batteries (LR6 or R6), being careful to the battery polarity.
What are the final steps for replacing the batteries?
Reattach the battery cover. Secure the cover with the screws.
What can be seen after the battery cover is removed?
After the battery cover is removed, the fuse can be seen. When replacing the fuse, see "6.4 Replacing Fuses”.
What does the L9207-10 Test Lead supplied with the instrument used for?
The L9207-10 Test Lead supplied with the instrument are used for measurements.
What should you do if you are using Hioki’s optional measurement cables?
Depending on measurement locations, use our optional measurement cables.
What should you do to prevent short circuit accidents when using the L9207-10 Test Lead?
To prevent a short circuit accident, be sure to use the test leads with the sleeves attached when performing measurements in the CAT III and CAT IV measurement categories.
What should you do if the sleeves are inadvertently removed during measurement?
If the sleeves are inadvertently removed during measurement, stop the measurement.
What type of test leads should be used to ensure safe operation?
To ensure safe operation, use only test leads specified by our company.
What should you be careful to avoid when carrying out measurements with the sleeves in place?
When carrying out measurements with the sleeves in place, be careful to avoid damaging the sleeves.
What should you avoid when handling the tips of the metal pins?
The tips of the metal pins are sharp and may cause injury. Do not touch the tips.
What are the parts of the L9207-10 Test lead?
Black plugs, red plugs, cables, barriers, sleeves, metal pins, and safety cap.
What is the safety cap on the L9207-10 Test lead for?
The plugs of the test leads are covered with the safety caps. Before use, remove the caps.
What is the metal pin of the L9207-10 Test lead used for?
Connect to the object to be measured. 4 mm or less (sleeve attached) 19 mm or less (sleeve removed) Diameter & approx. 2 mm
What is the sleeve of the L9207-10 Test lead used for?
Attach to the metal pins to prevent short circuit accidents.
What does the barrier of the L9207-10 Test lead represent?
Represents the safe handling distance from the metal pins.
What should you do during measurement with the L9207-10 Test lead?
During measurement, do not touch the area between the barrier and the tip of the sleeve.
What is the plug of the L9207-10 Test lead used for?
Connect to the measurement terminals on this instrument.
What is the cable of the L9207-10 Test lead made of?
Double sheathed cables (Length: approx. 900 mm, Diameter: $ approx. 3.6 mm)
When should the L9207-10 Test Lead be replaced?
When the white portion inside the cable is exposed, replace with a new L9207-10 Test Lead.
How do you remove and attach the sleeves on the test leads?
Hold the bottom of the sleeves and pull the sleeves off. Safely store the removed sleeves so as not to lose them.
Insert the metal pins of the test leads into the holes of the sleeves, and firmly push them all the way in.
How do you connect the test leads to the instrument?
- Turn the rotary switch to the desired measurement function.
- Connect the test leads to the relevant measurement terminals.
- Besides the current measurement (excluding the clamp)
- COM terminal – Connect the black test lead.
- V terminal – Connect the red test lead.
- Current measurement
- COM terminal – Connect the black test lead.
- μΑ/mA terminal – Connect the red test lead.
- A terminal (Only the DT4282)
What should you do to properly position the instrument with the stand?
Position the instrument with the stand at the rear.
What should you NOT do when positioning the instrument?
Do not position the instrument on an unstable table or inclined surface. When the instrument is set on the stand, do not apply a strong force above. Doing so may damage the stand.
How do you use the optional Z5004 or Z5020 Magnetic Strap?
Attach the optional Z5004 or Z5020 Magnetic Strap to the instrument and attach the magnet to the wall surface (with metal plate affixed).
Who should not use the Z5004 or Z5020 Magnetic Strap?
Those with medical electronics such as pacemakers should not use the Z5004 or Z5020 Magnetic Strap. Nor should such persons approach the Z5004 or Z5020. It is extremely dangerous. The electronics may not operate properly and the life of the operator may be put at great risk.
Where should you avoid using the Z5004 or Z5020 Magnetic Strap?
Do not use the Z5004 or Z5020 in locations where it may be exposed to rainwater, dust, or condensation. In those conditions, the Z5004 or Z5020 may be decomposed or deteriorated. The magnet adhesion may be diminished. In such case, the instrument may not be hung in place and may fall.
Where should you avoid bringing the Z5004 or Z5020?
Do not bring the Z5004 or Z5020 near magnetic media such as floppy disks, magnetic cards, pre-paid cards, or magnetized tickets. Doing so may corrupt and may render them unusable. Furthermore, if the Z5004 or Z5020 is brought near precision electronic equipment such as PCs, TV screens, or electronic wrist watches, they may fail.
What should you do before using the instrument for the first time?
Before using the instrument the first time, verify that it operates normally to ensure that the no damage occurred during storage or shipping. If you find any damage, contact your authorized Hioki distributor or reseller.
What are you inspecting the instrument and test leads for?
The instrument is neither damaged nor cracked. The internal circuits are not exposed. The terminals are not contaminated with debris. The coating of the test leads is neither broken nor frayed, or the white portion or metal part within the lead is exposed.
What action should you take if the instrument is damaged?
If it is damaged, there is a risk of electric shock. Do not use the instrument but send it for repair.
What action should you take if the terminals are contaminated?
Remove contamination with a cotton swab.
What action should you take if the test lead is damaged?
If the test lead is damaged, there is a risk of electric shock. Do not use the instrument but send it for repair.
What should you check when turning on the power?
The battery voltage is sufficient. When the indicator appears in the top right corner of the display, the battery voltage is low. Replace the batteries as soon as possible.
Display all indicators and ensure that no indicators are missing. If any of the indicators are missing, send the instrument for repair.
How do you check if the test leads are broken?
Regarding the continuity check, deliberately short circuit the test leads and then check the display.
Normal: The value stabilizes at around 0.1 Ω to 0.2 Ω. Abnormal: A numeric value other than the above appears.
What action should you take if the test leads are broken?
The test leads may be broken. Replace with those specified by our company. If the same phenomena persist even after the test leads are replaced, a malfunction may occur. Halt inspection and then send the instrument for repair.
What should you do to check that the fuse is not broken?
- Remove the fuse from the instrument.
- Reattach the battery cover.
- In the resistance measurement, check the resistance of the fuse.
Normal: 630 mA – Approx. 1.2 Ω 11 A – 0.1 Ω or less
Abnormal: If the value above is not obtained (the value higher than that is displayed), replace the fuse.
What should you observe to avoid short circuit accidents before measurements?
Observe the following to avoid short circuit accidents.
- Always verify the appropriate setting of the rotary switch before connecting the test leads.
- Disconnect the test leads from the measurement object before switching the rotary switch.
- Operate or connect the instrument by following the procedure of each measurement example (or procedure steps).
What is the auto power save function?
Before shipping (In the default setting), the auto power save function is set to enabled. If the instrument has not been operated for approx. 15 minutes, it enters the sleep mode.
How to recover from the sleep mode?
When the instrument is in the sleep mode, press any key or turn the rotary switch to recover from the sleep mode.
What happens if the sleep mode continues?
When the sleep mode continues for approx. 45 minutes, the power turns off automatically.
How to recover from the power off state?
To recover from the power off state, set the rotary switch to OFF and then turn on the power again.
What should you do during current measurement before turning off the instrument?
During current measurement, before setting the rotary switch to OFF, disconnect the test leads. If the rotary switch is forcibly turned, the shutter may be damaged.
What happens if the measurement terminal is open during DC voltage (DCV) or AC voltage (ACV) measurement in the 60 mV or 600 mV range?
When the measurement terminal is open during DC voltage (DCV) measurement or AC voltage (ACV) measurement in the 60 mV range or 600 mV, a random value is displayed. This does not indicate a malfunction of the instrument. When the probe is connected to the measurement target, a normal numerical value is displayed. A high-input impedance voltmeter is used in the instrument for highly sensitive measurement. Consequently, external noise, such as inductive noise, appears as a numerical value.
How is the maximum input range exceeded shown?
OVER blinks, the red backlight blinks, the maximum value within the maximum range blinks, and the buzzer sounds.
What corrective action should be taken when the maximum input range is exceeded?
Immediately move the test leads away from the measurement object.
How is the measured value exceeds the maximum value in each range shown?
OVER blinks, the red backlight lights up, and the maximum value blinks.
What corrective action should be taken when the measured value exceeds the maximum value in each range?
Change the range.
What corrective action should be taken when measurement other than voltage and current is exceeded?
Change the range, or measure the samples in the specified range. If the same symptom still occurs, check that the test leads are not broken.
What corrective action should you take when the Thermocouple (K) is broken during Temperature measurement?
Check that the thermocouple has been connected correctly to the measurement terminal. If the display does not change, replace with a new Thermocouple (Κ).
What is the process for measuring AC Voltage?
- Set the rotary switch to the AC Voltage function.
- Connect the test leads.
- Measure the AC voltage. Measure the frequency simultaneously.
Note: The measured value is a true RMS.
Note: If the input voltage is lower than each range’s accuracy guarantee range, the instrument may display zero. Choose an appropriate range for the input voltage to measure it.
What is the process for measuring DC Voltage?
- Set the rotary switch to the DC Voltage function.
- Connect the test leads.
- Measure the DC voltage.
What is the process for measuring synthesized voltage of DC and AC?
- Set the rotary switch to the Synthesized Voltage of DC and AC function.
- Connect the test leads.
- Measure the synthesized voltage of DC and AC.
Note: The measured value is a true RMS.
Note: It is also possible to check the AC or DC components individually.
Note: If the input voltage is lower than each range’s accuracy guarantee range, the instrument may display zero. Choose an appropriate range for the input voltage to measure it.
What is the process for Measuring voltage of DC and AC components?
- Set the rotary switch to the AC+DC Voltage function.
- Press the SHIFT button.
- Connect the test leads.
- Measure the voltage of DC and AC components.
What happens during voltage/current measurement of AC?
During voltage/current measurement of AC, the frequency can be checked in the sub display. It is not possible to change the frequency range.
What should you be aware of when measuring frequency?
- If signals out of the range of frequency measurement are measured, [—–] appears. Be aware of it.
- The sensitivity of the frequency measurement is regulated by range. (Minimum sensitivity voltage, Minimum sensitivity current) When the value is less than the minimum sensitivity voltage (current), the indicated value may fluctuate. When the voltage (current) range is lowered, the value stabilizes. This does not apply to cases where the value fluctuates due to noise.
- During the measurement of low frequency, if the auto range does not stabilize and frequency cannot be measured, fix the range and measure again.
What is the process for Decibel Conversion (dBm/dBV)?
- Set the rotary switch to the AC Voltage function.
- Press SHIFT once: dBm.
- Press SHIFT twice: dBV.
- Connect the test leads.
The result of the AC voltage measurement is decibel-converted for the standard and then displayed.
How to change the standard impedance of the dBm conversion?
- Turn on the power while pressing ▼.
- Select a desired value.
- HOLD (Confirm the value.)
What is the process for Checking Continuity?
- Set the rotary switch to the Continuity function.
- Set the Reference Value.
- Connect the test leads.
Note: The input short circuit is detected and informed via a buzzer and red backlight.
What is the process for Measuring Diode?
- Set the rotary switch to the Diode function.
- Press the SHIFT button.
- Connect the test leads.
- Measure the diode.
Note: The forward voltage of the diode is measured. If the forward voltage of the diode is the threshold or less, it is informed via a buzzer and red backlight.
What is the process for Measuring Resistance?
- Set the rotary switch to the Resistance function.
- Connect the test leads.
- Measure the resistance.
Note: Resistance is measured. Note: The open terminal voltage is approx. 2.5 V or less. The measurement current (DC) varies depending on the range. To avoid damage to the measurement object, check the specifications before use.
What are the threshold values for Measuring Resistance?
Detection 20 Ω, Open detection – 220 Ω or more Short circuit detection – 20 Ω or less
What are the threshold values for Measuring Diode?
0.15 V/0.5 V (default)/1 V/1.5 V/2 V/2.5 V/3.0 V Even after the power is turned off, the setting is retained.
How do I clean the instrument?
To clean the instrument, wipe it gently with a soft cloth moistened with water or mild detergent. Wipe the display gently with a soft, dry cloth. Never use solvents such as benzene, alcohol, acetone, ether, ketones, thinners or gasoline, as they can deform and discolor the case.
What should I do with the instrument when I’m disposing of it?
Handle and dispose of the instrument in accordance with local regulations.
What should I do when a malfunction of the instrument is suspected?
Check the information in “Before sending the instrument for repair” and then, if necessary, contact your authorized Hioki distributor or reseller.
What should I do when sending the instrument for repair?
Remove the batteries and pack it carefully to prevent damage during transportation. Include cushioning material so the instrument cannot move within the package. Be sure to include details of the problem. Hioki cannot be responsible for damage that occurs during transportation.
What does it mean if nothing appears in the display?
Check that the batteries are not exhausted. Replace with new batteries.
What does it mean if the display disappears after a short time?
Check that the auto power save function has not been activated. Check the setting of the auto power save function.
What does it mean if a numerical value appears when nothing is connected?
When the measurement terminal is open during DC voltage (DCV) measurement or AC voltage (ACV) measurement in the 60 mV range or 600 mV, a random value is displayed. This does not indicate a malfunction of the instrument. When the probe is connected to the measurement target, a normal numerical value is displayed. A high-input impedance voltmeter is used in the instrument for highly sensitive measurement. Consequently, external noise, such as inductive noise, appears as a numerical value.
What should I do if the measured value does not appear during current measurement?
Check that the fuse is not blown. Replace with a new fuse specified by our company. Check that the fuse holder is not deformed. When removing the fuse, the holder is deformed if excessive force is applied. Pinch it with needle-nose pliers and restore the shape of the fuse holder. Check that the test lead is not broken. Perform the continuity check to confirm the continuity of the test leads. If the test lead is broken, replace the lead.
What should I do if the measured value does not appear except during current measurement?
Check that the test leads have been inserted at the ends. Check that the measurement method is correct. Check that the fuse is not blown. If no problems have been found, the circuit may be malfunctioning. Send the instrument for repair.
What should I do if the measured value does not appear even after short circuit of the probe?
The fuse may be blown. Check that the fuse is not broken. If the fuse is blown, replace with the specified fuse.
What does it mean if the display does not stabilize and the value fluctuates and it is difficult to read the value?
The display does not stabilize due to the influence of noise and/or input signals. Set the display update slower (press SLOW for 1 second) so that the display fluctuation can be eliminated. Less than 5% of each range is outside of the guaranteed accuracy at AC voltage (VAC, mV AC), DC+ACV measurement, and AC (ACµA, ACMA, ACA). Less than 15% of each range is outside of the guaranteed accuracy at AC clamp measurement. The measured value does not stabilize if the measurement signal is small.
What does it mean if [—–] appears in the display?
[—-] appears when the rotary switch position is not confirmed. Set the rotary switch to the proper position.
What does it mean if the measured value of the frequency does not stabilize?
The display does not stabilize due to the influence of noise and/or input signals.
What do I do if the range cannot be changed?
The measurement range cannot be changed when [REL] is lit. To change the range, press REL for at least 1 second to reset the REL function.
What should I do if turning on the power brings up the error display, and when nothing is connected, the error display appears?
Reset the instrument. If the same symptom still occurs even after resetting the instrument, send the instrument for repair.
What do I do if I want to perform zero adjustment?
Using the relative value display function, zero adjustment can be performed.
Where can I obtain a replacement fuse?
These are available at authorized Hioki distributors or resellers.
Can rechargeable batteries be used?
Rechargeable batteries can be used. However, the discharge characteristic of these batteries is different from that of alkaline batteries. Be aware that the remaining battery power display does not function properly.
How can I control multiple instruments with 1 PC?
To communicate with the instrument, the optional DT4900-01 Communication Package is required. It is possible to control multiple instruments via USB ports.
What should I do if the instrument cannot communicate with the PC?
- Is the communication setting between the instrument and the PC correct?
- Are the baud rate and parity check set correctly?
- Is the USB cable connected correctly?
- Are the light receiving and emitting parts clean?
How can I perform communication using my own software and learn commands?
To communicate with the instrument, the optional DT4900-01 Communication Package is required. For details on commands, see the communication specifications in the CD accompanied by the communication package. These can also be downloaded from the internet.
What do I do if error code Err 001 is displayed?
Err 001 indicates a ROM error with the program. When the error appears in the display, it is necessary to solve by the actions below.
What do I do if error code Err 002 is displayed?
Err 002 indicates a ROM error with the adjustment data. When the error appears in the display, it is necessary to solve by the actions below.
What do I do if error code Err 004 is displayed?
Err 004 indicates a EEPROM error with the memory data. Replace with new batteries or reset the instrument. If the same symptom still occurs, it is necessary to repair the instrument.
What do I do if error code Err 005 is displayed?
Err 005 indicates an ADC error with a hardware malfunction. When the error appears in the display, it is necessary to solve by the actions below. It is necessary to repair the instrument.
What are the specified fuses?
Table:
| Rating | Resistance | Specifications |
|---|---|---|
| For μA/mA terminal (DT4281, DT4282) 630 mA/ 1000 V | Approx. 1.2 Ω | Manufacturer: HOLLYLAND Breaking characteristic: Fast-blow type Breaking capacity: 50 kA AC/30 kA DC Size: $10.3 mm × 38 mm |
| For A terminal (DT4282) 11 A/ 1000 V | 0.1 Ω or less |
How do I replace the fuses?
- Remove the test leads from the instrument.
- Set the rotary switch to OFF.
- Using a Phillips screwdriver, remove the screws (2 locations) from the battery cover.
- Remove the battery cover.
- Insert a slotted screwdriver or a similar tool (from the direction of the arrow in the left figure), and remove the fuse.
- Attach a new fuse.
- Reattach the battery cover.
- Secure the cover with the screws.
How can I measure temperatures?
Using our optional DT4910 Thermocouples (K), temperatures can be measured.
How do I measure temperatures with the thermocouple applied to the surface of the measurement object?
Clean the surface so that the thermocouple can make contact with the object securely.
What should I do if no numeric value is displayed after the thermocouple is attached ([OPEn] is displayed)?
The instrument or thermocouple may be malfunctioning. Check this with the following procedure.
How do I check if the instrument or thermocouple is not malfunctioning after attaching ([OPEn] is displayed)?
- Short-circuit the V and COM terminals of the instrument using the test leads.
If the ambient temperature is displayed: Go to step 2
If the ambient temperature is not displayed: The instrument is malfunctioning. Send it for repair. 2. Connect the thermocouple in the correct direction.
If [OPEn] remains displayed: The thermocouple may be malfunctioning (blown). Replace the thermocouple with a new one.
How do I measure electrostatic capacities?
The capacity of the capacitor is measured. Before measuring, be sure to turn off the power to the measurement circuit. Otherwise, electric shock may occur or the instrument may be damaged. Do not measure the capacitor which has been charged.
What do I do when measuring the polar capacitor?
Connect the V terminal (red test lead) to the + terminal of the capacitor and the COM terminal (black test lead) to the – terminal.
What do I do if I’m measuring components on a circuit board?
For components on a circuit board, measurement may not be possible due to the effect of the peripheral circuit.
What happens if the capacity changes when the measurement range is changed?
If the capacity changes when the measurement range is changed see the PDF.
How do I measure Conductances (DT4282)?
The resistance is measured and the inverse number is displayed (Unit: nS, nano-siemens). When the resistance is excessively large, it is used.
What voltage is used to measure Conductances (DT4282)?
The open terminal voltage is approx. 2.5 V or less. The measurement current (DC) is approx. 96 nA. To avoid damage to the measurement object, check the specifications before use.
How do I measure Current DC/AC?
DC/AC is measured.
SHIFT) is used to toggle between DC and AC.
What range should I set to when measuring an unknown current?
Set to the high range (mA for the DT4281, A for the DT4282).
How do I select the Measurement Range?
Auto or Manual range can be selected.
How do I measure with the auto range?
When the manual range is set, pressing (RANGE) for at least 1 second changes to the auto range. The instrument automatically selects the optimum measurement range.
How do I measure with the manual range?
Press (RANGE). Each time the key is pressed, a higher range is specified. When the key is pressed at the highest range, the lowest range is specified once again.
What should I keep in mind about the measurement function?
When the measurement function is switched using the rotary switch or SHIFT, or when the peak measurement is canceled, the auto range is enabled.
What is Retaining the Measured Value?
The measured value is retained manually or automatically.
How do I manually retain the measured value?
When HOLD is pressed, the measured value is retained. To cancel the hold state, press it again.
How do I automatically retain the measured value?
When HOLD is pressed and held for at least 1 second, auto mode starts. When the measured value stabilizes, it is retained.
What should I know about input signals?
If HOLD is pressed again, or the input signal exceeds the dead zone threshold again (see table on the next page), or when the range is switched internally and the measured value is stabilized once again, the hold state is canceled. To disable the auto hold function, press it for at least 1 second again. If the input signal is too small for the relevant range (dead zone threshold), the measured value cannot be automatically retained. If the difference between the current and previous measured values remains less than the counts in the stable field of the table below, the instrument determines the current value has stabilized.
What is Dead zone threshold?
Table:
| Function | Stable (count) | Dead zone threshold (count) |
|---|---|---|
| AC voltage | 1200, 200 (1000 V range) | 1200, 200 (1000 V range) * |
| DC voltage | 1200, 200 (1000 V range) | 1200, 200 (1000 V range) * |
| DC voltage + AC voltage | 1200, 200 (1000 V range) | 1200, 200 (1000 V range) |
| Continuity check | 100 | 5900 |
| Diode test | 80 | 3520 |
| Resistance | 1200, 120 (60 MΩ/600 MΩ range) | 58800, 5880 (60/600 MΩ range) |
| Conductance | 1200 | 1200 |
| μA | 1200 | 1200 |
| mA | 1200 | 1200 |
| DC | A 1200, 200 (10 A range) | 1200, 200 (10 A range) |
| μA | 1200 | 1200 |
| mA | 1200 | 1200 |
| AC | 1200, 200 (10 A range) | 1200, 200 (10 A range) |
| AC (clamp input) | 5% of the range | 5% of the range |
- No function is available for the mV range.
What can I do When the Measured Value Fluctuates (SLOW)?
When the measured value fluctuates and cannot be read, it is possible to stabilize the value. (When SLOW is lit).
When SLOW is off (normal): refer to the display update rate (Default setting)
When SLOW is lit (slow): five times normal (average of 5 times).
Press MEM for at least 1 second. (SLOW lights up.)
To cancel the state, press it for at least 1 second again. (SLOW goes off.)
How do I remove Harmonic Components of the Inverter (FILTER)?
To prevent electric shock, before setting the filter function, confirm if there is a voltage or not with the filter function disabled (OFF). Remove the harmonic components when measuring the inverter output. This function can be used when measuring the AC voltage or AC+DC voltage. The cut-off frequency is 630 Hz.
FILTER Press READ for at least 1 second. (FILTER lights up.) To cancel the state, press it for at least 1 second again. (FILTER goes off.)
Only 600V/1000V range. When the measurement function is switched using the rotary switch or SHIFT, the filter function is canceled.
How do I check the Maximum/Minimum Value (MAX/MIN)?
The maximum/minimum value after start of the measurement can be checked.
Press (MAX/MIN). Each time the key is pressed, the display is changed in the order of the maximum value (MAX), minimum value (MIN), and current value. A buzzer sounds when the maximum value is updated with MAX displayed or the minimum value is updated with MIN displayed.
The maximum and minimum values are for the displayed value; they do not relate to peak values such as AC signals. The main and sub displays update their maximum and minimum values individually.
How do I clear the existing maximum/minimum value?
When MAX or MIN appears, press CLEAR. Both maximum and minimum values are cleared. After this, the maximum and minimum measurement values after clearing the previous ones are retained.
When saving to memory, only the value displayed on the screen (current value, maximum value, or minimum value) can be saved.
How can I check the Peak Value (V. A PEAK)?
After starting the voltage/current peak measurement, the maximum/ minimum instantaneous value can be checked.
The peak measurement can be performed only with the manual range. Press RANGE to select the appropriate range before starting the measurement. (For the range configuration and display range).
Press PEAK. Maximum instantaneous value instantaneous value can be retained, from the point at which PEAK is pressed. To cancel the display of the peak value, press it again.
How do I clear the maximum/minimum instantaneous value?
Press (CLEAR). The maximum/minimum instantaneous value can be displayed, from the point at which (CLEAR) is pressed.
How do I check the Relative Value/ Performing Zero Adjustment?
The relative value comparing to the standard value can be checked (relative function). It can also be used as the zero adjustment function. Zero adjustment eliminates the influences of the wiring resistance (resistance measurement) and the wiring capacity (capacitor measurement).
The measurement range cannot be changed when [REL] is lit. To change the range, press REL for at least 1 second to reset the REL function.
How do I perform DC voltage measurement?
When the standard value is measured, press (MAX/MIN) for at least 1 second (REL lights up). To cancel the state, press it for at least 1 second again. (REL goes off.)
How do I perform zero adjustment?
When performing zero adjustment, the condition of the test leads varies depending on the measurement function. Perform zero adjustment, referring to the table below.
| Measurement function | V, Α, Ω | +, nS |
|---|---|---|
| Condition of test leads | Short circuit | Open |
How do I perform Using the Memory Function?
The measurement result can be saved and read using the memory function. Up to 400 data can be saved. Data can also be deleted arbitrarily. The saved data can be imported to the PC using the DT4900-01 Communication Package (optional).
How do I save the measured value?
- Press MEM. Memory mode starts. This function applies until the power is turned off. The memory No. appears (only for the measurement which can be saved).
- Select the memory No. to be saved using . When the key is pressed and held, the memory No. can be incremented/ decremented faster.
- Press MEM to save the measured value.
What happens when the measured value is saved?
When the measured value is saved, the memory No. for which the value is to be saved next appears. Even when the power is turned off, the memory data are retained.
What should I keep in mind when saving?
- If the memory No. for which the data have already been saved is selected, [USED] appears.
- When MEM is pressed, the data are overwritten.
- When the value is saved with memory No. “400” displayed, a buzzer sounds and “FULL” appears in the display, and then “001” reappears.
- When [READ] (data reading) is displayed, it is not possible to save the value.
- The current value, maximum value (MAX), minimum value (MIN), instantaneous maximum value (Peak max), and instantaneous minimum value (Peak min) cannot be saved simultaneously. Only the displayed numeric value can be saved.
- The continuity check data and the diode test data cannot be saved.
How do I store data in the auto hold function?
Enable the auto hold function. After the measured value is retained automatically, press MEM to save the data.
What items are saved per data?
• Function • Measurement range • Measured value in the main display • Measured value in the sub display • Whether or not the REL function is executed • Filter ON/OFF
How do I read the memory data (READ)?
- Press READ. Read mode starts.
- Select the desired memory No. using .
What data is displayed only?
Only the memory Nos. corresponding to saved data are displayed.
How do I clear all memory data?
Press READ again or turn the rotary switch.
What happens When no memory data exists?
The relevant message appears and then the measurement display reappears.
How do I clear the memory data (CLEAR)?
- Press READ. Read mode starts.
- Select the No. to be cleared using .
- Press CLEAR.
How do I clear all memory data (CLEAR)?
- Turn on the power while pressing CLEAR. The relevant message appears in the display.
- Press (CLEAR) again within 3 seconds.
What should I keep in mind when clearing all memory data?
When 3 seconds elapse without pressing CLEAR, all memory data are not cleared and the measurement display reappears.
How do I mute the Buzzer?
The buzzer sound can be disabled.
Turn on the power while pressing (MAX/MIN). When (MAX/MIN) is released, the measurement display appears (()) goes off).
How can I cancel the buzzer mute function?
Turn on the power again while pressing (MAX/MIN. When (MAX/MIN) is released, the measurement display appears (())) lights up).
How do I Turn On the Backlight?
The backlight can be turned on/off by pressing.
What happens When PC communication is started?
The backlight is turned off forcibly.
How do I enable/disable the automatic deactivation of the backlight?
Turn on the power while pressing.
How do I use the Auto Power Save (APS)?
The auto power save function saves on power consumption. If the instrument has not been operated for approx. 15 minutes, it enters the sleep mode. (When the instrument is in the sleep mode, press any key or turn the rotary switch to recover from the sleep mode.) When the sleep mode continues for approx. 45 minutes, the power turns off automatically.
What state is the auto power save function before shipping?
Before shipping (as one of the default settings), the auto power save function is set to enabled. (APS lights up). It is also possible to disable the auto power save function.
What happens when instrument enters sleep mode?
At 30 seconds before the instrument enters the sleep mode, the APS blinks to indicate its status. To continuously use the instrument, press any key or turn the rotary switch.
How can I conserve power on the device?
After use, set the rotary switch to OFF. The auto power save function consumes a small amount of current.
How do I recover from the power off state?
Set the rotary switch to OFF and turn on the power again. (When the current measurement is used, disconnect the measurement cable and then turn on the power again.)
How do I disable the auto power save function?
Turn on the power while pressing HOLD. When HOLD is released, the measurement display appears. (APS goes off.) This function is disabled until the power is turned off.
How do I use Plus/Minus Judgment Function for Measurement Value?
If the measured DC voltage falls below the following standard value, a buzzer sounds and the backlight lights up red. This function is useful for checking for any incorrect connection of the DC power. Standard value: -10 V or less Measurement function: DCV
How do I enable/disable the Plus/Minus judgment function?
Turn on the power while pressing (SHIFT). The setting will be saved even when the power is turned off. ON and OFF is switched at each operation.
How can I Communicate with PC?
Using the optional DT4900-01 Communication Package, it is possible to transmit data to the PC or to control the instrument. For details, see the Instruction Manual which accompanies the communication package.
What are the Steps to communicate with the PC?
- Install the special software on the PC. (See the Instruction Manual which accompanies with the communication package.) Dedicated Software
- Attaching the USB cable to the instrument
- Connect to the PC. The virtual COM ports of the PC can be used as the USB interface.
How do I attach the communication adapter to the instrument?
- Using a Phillips screwdriver, remove the screws (2 locations) from the battery cover.
- Remove the battery cover.
- Attach the communication adapter.
- Reattach the battery cover.
- Secure the battery cover with the screws.
- Connect the USB cable to the communication adapter.
What to remember while attaching the communication adapter?
- Connect the cables, being careful to orient each cable correctly.
- During communication, appears in the display.
- When is lit, the operation keys of the instrument is disabled.
- During communication, do not disconnect the USB cable. Disconnecting the cable stops the communication. In that case, a warning is displayed by the PC software. Connect the cable again.
- It is possible to use the instrument while the communication adapter is attached, however, the communication adapter is excluded from the drop-proof.
How do I perform Setting and Checking the System?
- Checking that all indicators are displayed Check that there is no missing indicator. Turn on the power while pressing V-A. When (V-A) is released, the measurement display appears.
- Checking the software version of the instrument
How do I check that all indicators are displayed?
Check that there is no missing indicator. If any indicator is missing, stop using the instrument and send it for repair.
How do I check the software version of the instrument?
For repair or calibration, check the version if necessary.
How do I Changing the temperature display unit?
The units of temperature (°C or °F) can be changed.
- Turn on the power while pressing MAX/MIN and simultaneously.
- Press (MAX/MIN for at least 3 seconds.
- Change the unit of the temperature using .
- Press (HOLD) to determine the setting. After a few moments, the measurement display reappears.
The setting of the temperature unit is retained even after the power is turned off.
How do I perform Resetting the System?
The system is returned to the state before shipping. The power-on option setting is also reset. The memory data are not reset. To clear the memory data, clear the data individually for each memory No. or clear all data.
- Turn on the power while pressing CLEAR and SHIFT.
- Within 3 seconds, press CLEAR again.
What happens After [CLr] blinks
After [CLr] blinks, the system returns to the state before shipping. If the instrument is not operated for 3 seconds, the system is not reset but the measurement display reappears.
What are the Default settings?
| Setting item | Default setting | Display |
|---|---|---|
| Filter function | Disabled | |
| Relative function | Disabled | |
| Display update | Normal | |
| Display hold | Disabled | |
| Range | AUTO | [RANGE: AUTO] is lit. |
| Auto hold | Disabled | |
| Maximum/Minimum value | Disabled | |
| Peak value | Disabled | |
| Auto power save function | Enabled | [APS] is lit. |
| Automatic backlight deactivation | Off | |
| Buzzer | Enabled | [((•))] is lit. |
| % conversion | 4-20 mA | |
| dBm standard impedance | 600 Ω | |
| Temperature display unit | °C | |
| Plus/Minus Judgment Function for Measurement Value | Disabled |
How can I perform the Power-on Option Table?
The settings in the instrument can be changed or checked. After changing the setting, the measurement display then reappears. Turn on the power while pressing the operation key. (Turn the rotary switch from OFF.)
How to Canceling the auto power save function (APS)
HOLD + ((APS) goes off.)
Ref: p. 70
How to set Buzzer (ON/OFF)
MAX/MIN + ([ ((•) ] lights up/goes off.)
Ref: p. 69
How to set Automatic backlight deactivation setting
[Automatic deactivation disabled: [OFF], [bL-A] Automatic deactivation enabled: [on], [bL-A]]
Ref: p. 69
How to Clear all memory data
CLEAR + CLEAR [Press this within 3 seconds.]
Ref: p. 68
How to perform System reset
CLEAR + SHIFT + CLEAR [Press this within 3 seconds.]
Ref: p. 76
How to set Standard impedance setting (dBm measurement)
- HOLD Select the desired setting. Confirm the change.
Ref: p. 41
How to set Switching to 4-20 mA/ 0-20 mA?
- Select the desired setting. Confirm the change.
Ref: p. 53
How to set Displaying all indicators
- V-A Peak
Ref: p. 74
How to perform Checking the version?
- RANGE)
Ref: p. 74
How to perform Switching the temperature unit?
MAX/MIN + + MAX/MIN. Three seconds or more + HOLD. Select the desired setting. Confirm the change.
Ref: p. 75
How to perform Displaying the serial number
READ+ READ
Serial No. display (9 digits)
1st to 4th digits: Main display
5th to 9th digits: Sub display
When READ is released, the measurement display appears.
How to perform Enabling/disabling the Plus/Minus judgment function
SHIFT +
Ref: p.71
CLICK HERE TO DOWNLOAD HIOKI DT4281 (01) PDF MANUAL