PHILIPS PM3355 (01) PDF Document

The following parts should be included in the shipment of your PHILIPS PM3355:

– 1 OSCILLOSCOPE

– 2 BATTERIES

– 1 FRONT COVER (PM3365A/PM3375 only)

– 1 OPERATION GUIDE or 1 BEDIENUNGSANLEITUNG or 1 NOTICE D’UTILISATION

– 1 MAINS VOLTAGE CORD

– 2 PROBES

– 1 SPARE FUSE, 1.6 AT (located inside fuse holder)

– 1 REFERENCE MANUAL

Check the contents of the shipment for completeness and note whether any damage has occurred during transport. If the contents are incomplete, or there is damage, a claim should be filed with the carrier immediately, and the Philips/Fluke Sales or Service organisation should be notified in order to facilitate the repair or replacement of the instrument.

ACCESSORIES

SERVICE REPLACEMENT PARTS

The Philips Digital Storage Oscilloscope (DSO) range, including the PM3355, has the following easy-to-use features:

– 60 MHz analog oscilloscope for PM3350A and PM3355

– 100 MHz analog oscilloscope for PM3365A and PM3375

– 100 Msamples/s single shot digital acquisition on both channels for PM3350A and PM3365A

– 250 Msamples/s single shot digital acquisition on both channels for PM3355 and PM3375

– Auto Set for instant signal viewing in both analog and digital oscilloscope modes

– Cursors for time and amplitude measurements in digital oscilloscope mode

– Reference memories and non-volatile storage of all waveforms

– Optional interface facilities for remote control and hard copy output

– Storage of 64 front settings

For correct and safe use of the PHILIPS PM3355, it is essential that both operating and servicing personnel follow generally-accepted safety procedures in addition to the safety precautions specified in the manual. Specific warning and caution statements are found throughout the manual where they apply.

CAUTION: Is used to indicate correct operating or maintenance procedures in order to prevent damage to or destruction of the equipment or other property.

WARNING: Calls attention to a potential danger that requires correct procedures or practices in order to prevent personal injury.

SYMBOLS:

A triangle with an exclamation mark inside means to read the operating instructions.

A circle with a ground symbol inside indicates a Protective earth (grounding) terminal (black).

Whenever it is likely that safety-protection has been impaired, the instrument must be made inoperative and be secured against any unintended operation. The matter should then be referred to qualified technicians. Safety protection is likely to be impaired if, for example, the instrument fails to perform the intended measurements or shows visible damage.

Earthing (Grounding): Before any connection to the inputs is made, the instrument must be connected to protective earth (ground) via the three-core mains (line) cable. The mains (line) plug must be inserted only into a socket outlet provided with a protective earth (ground) contact. The protective action must not be negated by the use of an extension cord without a protective conductor.

WARNING: Any interruption of the protective conductor inside or outside the instrument is likely to make the instrument dangerous. Intentional interruption is prohibited.

Mains (Line) Voltage Cord and Fuses: The oscilloscope has a tapless switched-mode power supply that covers most nominal voltage ranges in use, from 100 V to 240 V (r.m.s.). The nominal mains (line) frequency range is 50 Hz to 400 Hz. The mains (line) fuse rating is 1.6 AT delayed-action, 250 V.

WARNING: The instrument must be disconnected from all voltage sources when renewing a fuse.

The mains (line) fuseholder is located on the rear panel in the mains (line) input socket. If the mains (line) fuse needs replacing, proceed as follows:

1. Disconnect the instrument from the mains (line).

2. Remove the cover of the fuseholder by means of a screwdriver.

3. Fit a new fuse of the correct rating and refit the cover of the fuseholder.

WARNING: Make sure that only fuses of the required current and voltage rating, and of the specified type, are used for renewal. The use of the repaired fuses, and/or short-circuiting of the fuseholder, is prohibited.

The PHILIPS PM3355 is provided with a built-in memory back-up circuit, if batteries are fitted. The batteries are not factory installed and must be fitted at delivery.

Upon power down, only front settings are stored when in the analog mode of use, or the front settings and traces are stored when in the digital mode of use. The oscilloscope returns to these settings on power on. This memory function works when the oscilloscope is switched off from the front panel or when the mains (line) supply is interrupted more then 20 ms.

Replacing the batteries:

The memory back-up batteries (2*LR6 Alkaline Penlight) placement and replacement must be carried out only by a qualified technician.

1. The instrument must be disconnected from the mains (line).

2. Remove the screw that holds the top cover at the rear of the instrument.

3. Gently push the cover backwards until it can be lifted.

4. Remove the cover by lifting it clear of the instrument. The memory battery back-up unit is now accessible. This unit is located on the instrument’s rear panel.

5. Ease off the clip that holds the memory back up unit to the chassis.

6. Gently slide the battery holder out of the chassis.

7. Install both batteries in their holders. The installation direction of the batteries is shown on the battery holder.

NOTE: When replacing the memory back-up unit, take care not to damage the wiring in the vicinity of the battery holder.

By pulling both handle ends outwards away from the instrument, the handle can be rotated to allow the following instrument positions:

– vertically on its rear feet;

– horizontally on its bottom feet;

– in two sloping positions on the handle.

ATTENTION: Do not position the oscilloscope on any surface which radiates heat, or in direct sunlight. Ensure that the ventilation holes at the rear and top are free from obstruction.

The PM3352A/57/67A/77 are provided with a rackmount cabinet without handle. This offers the possibility to build the instrument into a standard 19 inch rack. Apart from the rackmount cabinet, these instruments are identical to the PM3350A/55/65A/75 and are not described separately.

The oscilloscopes are delivered with spacers and screws [4 European (metric) type and 4 American (standard) type].

ATTENTION: To maintain adequate instrument cooling, all ventilation holes of the cabinet above and behind must remain free of obstructions by at least 2 cm.

Follow these steps to get started:

1. Connect the oscilloscope to the mains (line) voltage.

2. Switch the oscilloscope on by means of the push-button POWER LINE ON.

3. Adjust the TRACE ROTATION by means of a screwdriver so that the trace is parallel with the horizontal graticule lines.

4. Connect a probe to input A of the oscilloscope.

5. Connect the other end of the probe to the CAL output of the oscilloscope.

6. Press the AUTO SET key.

The AUTO SET function will set automatically all relevant parameters of the oscilloscope (attenuator setting, time base setting and trigger source setting) for an optimum trace.

If the probe you use is an attenuator probe 10:1 or 100:1, it may be necessary to adjust it for the correct compensation, according to the instructions in the probe manual.

After switch-on with the POWER LINE ON push button, the screen controls can be adjusted for optimum illumination, trace and spot quality.

– The trace and text intensity is set by the INTENS rotary knob, and a sharp display is obtained by the FOCUS rotary knob.

– The screw driver control TRACE ROTATION is used to set a grounded trace parallel with the horizontal graticule lines.

– The graticule of the screen can be lit-up by the ILLUMINATION rotary knob, this can be used in dark environment or for making photographs.

A flashing segment indicates a situation that requires your special attention, for example:

– an incorrect selection of knobs/keys controls.

– a VAR rotary knob in uncal position.

– the end of a UP-DOWN control range.

– a key has been operated during the PLOT action.

– the DISPL PART UP-DOWN key has been pressed in TB MAGN x1 mode.

– display of register only.

The UP-DOWN key selects the required setting out of the range of settings possible for that function. They are used for the attenuator setting, the time base setting and the display part setting.

The PHILIPS PM3355 features the possibility to select several functions with a single key in sequential order. To obtain the correct function it is necessary to press the particular key repeatedly until the correct function is visible in the LCD. After the last function in line, the sequence starts again. The positions of the keys correspond to their actual positions on the front panel of the oscilloscope.

With the ROTARY knobs, continuously-variable adjustment of the function is obtained. ROTARY knobs are available for the following functions:

– Y POS (A and B): Vertical screen position for channels A and B.

– VAR A / VAR B: Variable attenuation for channels A and B. (Is in CALibrated position when fully clockwise).

– X POS: Horizontal screen position time-base.

– VAR: Variable time-base (not in DIGITAL MEMORY). (Is is CALibrated position when fully clockwise).

– TRIG LEVEL: Sets the trigger level.

– HOLD OFF: Adjusts the Hold off time. (Is in normal position when fully clockwise, i.e. minimum HOLD OFF).

The five softkeys located below the CRT can be used for different functions in digital memory mode, e.g. AMPLITUDE CALCULATIONS, TIME CALCULATIONS, PROCESS MEASUREMENTS, choice of REGISTER MEMORY and the ZOOM facility. All calculation and manipulation facilities are activated via successive steps through the softkey menu structure. When the menu has been activated, the CRT screen contains two areas for text. The top text area shows all calculation information and channel settings and the bottom text area shows all functions assigned to the five softkeys.

First ensure the oscilloscope is operating in the analog mode (DIGITAL MEMORY indication in LCD is off); otherwise press the DIGITAL MEMORY key. By pressing the AUTO SET key, the oscilloscope will automatically set the main functions to a clear optimal setting. Further adjustments and selections can then be made by operating the various keys and knobs.

To use the instrument as an analog oscilloscope three main functions need first to be defined:

– Vertical mode

– Horizontal mode

– Trigger mode

The following adjustments can be made for the vertical mode:

– Vertical display mode selection: Press the A/B key to select the channel you want to see, A, B or A and B simultaneously. If the ADD function is in use, it is possible to switch off the channels A and B.

– Adjustment of the absolute zero level: By using the GND key and the Y POS rotary knob, the zero level can be positioned anywhere on the screen. Pressing the GND key interrupts the input signal and grounds the input signal path. With the Y POS rotary knob, the zero level can be adjusted to any level on the screen. By pressing the GND key once again the signal is once more connected to the input.

– Channel coupling: By pressing the AC/DC key, you can select the coupling. In AC position the DC component of the measuring signal is rejected. In DC position the full bandwidth is available. AC coupling is used when a small AC signal has to be measured that is superimposed on a large DC voltage.

– Vertical amplitude adjustment: By operating the V…mV UP-DOWN key for best setting. The setting can be chosen out of a range from 2 mV up to 10 V per division in a fixed 1-2-5 sequence.

– Vertical variable attenuation: By adjusting the VAR rotary knob. The UNCAL position is used when the measurement is taken in percentages (UNCAL indication “>” flashes in the LCD). With the rotary knob the measured signal can be set to 100%.

Selection of ALTERNATED or CHOPPED display:

This selection is used if two signals are displayed. Press the ALT/CHOP key to select.

– In alternate mode, the CRT beam alternately traces one signal sweep and then the other. At low repetition rates this can be seen, so ALT is mainly used for high speed time-base settings (from around 0.1 ms/div and above).

– In chop mode, the beam chops from one signal to the other at a fast switching frequency and is therefore suitable for low speed signals. At high frequencies interference can occur between the switching signal and the measured signal, so take care when using the chop mode with high frequency signals.

Selection of ADD, NORMAL or INVERTED display:

This is selected by pressing the ADD/INVERT key. “INVERT” is active on channel B.

– In the ADD mode, channel B is added to channel A (A + B).

– In the ADD INVERT mode, channel B is subtracted from channel A (A-B).

– The differential mode (A-B) is useful for rejecting common-mode signals. By measuring in differential mode, the common-mode signal on one channel cancels out the common-mode signal on the other channel, leaving the actual signal visible on the display. A practical application of the differential mode is to eliminate hum from a signal.

– Selection of X deflection or horizontal time-base: Press the X DEFL key. In the X deflection mode the oscilloscope shows one signal to be displayed as a function of another signal (X-Y graph). The required X-axis signal is selected by the TRIG OR X SOURCE key (A, B, EXT or LINE).

– Selection of horizontal time scale: In horizontal time-base mode the display shows the measured signal vs time (Y-t graph). The time coefficient can be selected with the TB s…µs UP-DOWN key. You can make a selection of the time-base speed in a 1-2-5 sequence. With the rotary knob VAR you can make fine adjustments between the 1-2-5 steps. With the X MAGN key you can expand the time-base 10 times. By operating the X POS rotary knob the trace can be shifted across the screen in horizontal direction.

The time base can operate in three modes, selected by using the TB TRIG MODE key.

– AUTO: the horizontal sweep normally starts when a trigger occurs. If no trigger is detected within 100 ms after the last sweep then a sweep start automatically occurs. This means a trace is always visible on the display.

– TRIG: horizontal sweep will only start on a trigger pulse derived from the selected trigger source.

– SINGLE: horizontal sweep runs only once after it is armed by the RESET key and the receipt of a trigger pulse derived from the selected trigger source. The mode is very useful to capture single events. A special selection of SINGLE SHOT can be made in the application preselect menu (APPL). Enter the APPL menu by pressing MENU and keeping it pressed, then press AUTO SET. Select the CRT softkey APPL, then select the CRT softkey SNGL SHOT, and finally select the CRT softkey FIRST or MULTI.

– Trigger source selection: The trigger sources can be selected from channel A, channel B, composite channel A and channel B, channel EXTERNAL, or LINE (50 Hz or 60 Hz sine-wave derived from the line voltage) by pressing the TRIG OR X SOURCE key.

– Trigger level: Adjust the trigger level by using the TRIG LEVEL rotary knob. For repetitive signals, a stable, jitter-free display will only be obtained if each time-base sweep is triggered at precisely the same point on the signal waveform.

– Trigger coupling: Six modes can be selected by pressing the TRIG COUPL key: P-P, DC, TVF, TVL, LF, HF.

– Trigger slope selection: By pressing the slope key (symbol of a rising/falling edge). For triggering on a positive-going slope select the rising edge symbol, for triggering on a negative-going slope select the falling edge symbol.

– Hold-off time: By using the HOLD OFF rotary knob. The HOLD OFF knob is used to prevent “false” triggering and “double writing” when examining multiple pulse signals. Adjustment of the HOLD OFF knob enables triggering to be synchronized on the same pulse in the pulse train and so gives a stable display.

Six modes can be selected for trigger coupling by the TRIG COUPL key:

– P-P: Peak-to-peak triggering gives automatic ranging of the TRIG LEVEL knob, the ranging being determined by the peak-to-peak value of the signal. DC signals are rejected.

– DC: DC triggering; the full bandwidth of the trigger channel is available, while the level range of the rotary knob is more than ± 8 divisions.

– TVF: TV frame triggering allows triggering at the slow TV frame (field) synchronisation pulses; the TRIG LEVEL rotary knob is inoperative.

– TVL: TV line triggering allows triggering at the fast TV line synchronisation pulses; the TRIG LEVEL rotary knob is inoperative.

– LF: In this mode the signal used for triggering is first passed through a low-pass filter with a cut-off frequency of 50 kHz. All components with high frequencies are rejected.

– HF: In this mode the signal used for triggering is first passed through a high-pass filter with a cut-off frequency of 50 kHz. All components with low frequencies are rejected.

First ensure the oscilloscope is operating in the digital mode (DIGITAL MEMORY indication in LCD is on), if not then press the key DIGITAL MEMORY. By pressing the AUTO SET key the oscilloscope will automatically set the main functions to the most convenient setting. Further adjustments should be made by operating the keys.

The analog functions which are not available in DIGITAL MEMORY mode are: ADD, ALT/CHOP, X DEFL, COMP TRIG, X VAR.

In vertical mode, you can choose between a dotted or joined display by pressing the DOTS key.

– In digital memory mode the traces are built-up by “dots” of samples. Selection of “dotted” or interpolated (dotjoined) display can be made.

– In dotjoined mode the dots are interconnected by a line, so the display appears continuous.

In dotted mode every dot is displayed separately. The vertical resolution is 256 dot positions over 10 divisions, the horizontal display resolution is 1000 dot positions over 10 divisions when the expansion factor is x1.

The oscilloscope has two types of memory: a display memory, which you see in normal operation, and three register memories, which are used to store reference waveforms.

– Loading of register memory: To store a waveform in a register, first select a destination register R1, R2 or R3. This is done by operating the softkeys MEMORY and REGISTERS (see Section 4.3). When one of these registers is chosen you only have to press the LOAD key to store the signal into the register. Provided the oscilloscope is equipped with a battery back-up, the waveforms in all registers are still stored after power down for recall at the next power up.

– Display of register memory: Pressing the DISPLay key once will show the contents of the display memory and the selected register memory (R1 or R2 or R3) together on the screen. Now the two signals can be compared with each other. Pressing the DISPLay key a second time will show only the contents of the selected register memory (R1 or R2 or R3). Pressing the DISPLay key a third time will result in displaying the contents of the display memory again.

– Status of register memory: By pressing the STATUS key. Pressing the STATUS key once and keep it pressed enables the LCD to show the full settings of the selected register memory (R1 or R2 or R3). Pressing the STATUS key twice within one second and keep it pressed, the LCD will show the complete settings of the display memory (R0).

In horizontal mode the following selections can be made:

– Selection of horizontal time scale: By the TB s…µs UP-DOWN key, the X MAGN key. The adjacent figure shows the time-base ranges in relation to the sample rate and resolution. Only in SAMPLING mode repetitive signals are needed.

The digital time-base has three modes:

– ROLL: 50 s/div … 1 s/div (PM3350A/55/65A/75). In ROLL mode the screen build-up is from right to left.

– RECURRENT: 0.5 s/div … 0.5 µs/div (PM3350A/65A) or 0.5 s/div … 0.2 µs/div (PM3355/75). In RECURRENT mode the screen build-up is from left to right.

– SAMPLING: 0.2 µs/div … 20 ns/div (PM3365A) or 0.1 µs/div … 20 ns/div (PM3375). In SAMPLING mode repetitive signals are needed for a screen build-up from left to right. NOTE: The PM3350A/55 have no sampling mode!

– Horizontal Magnification: By pressing the X MAGN key, a horizontal magnification of 2, 4, 8, 16, or 32 times can be obtained. Any part of interest in a magnified signal may be selected for display by the DISPL PART UP-DOWN key.

In DIGITAL trigger mode the following extra functions are available:

– SINGLE SHOT: by pressing the TB TRIG MODE key and the RESET key. In DIGITAL MEMORY mode the display memory content is refreshed once after a suitable trigger is received. To clear the display memory contents press the RESET key, and the display memory contents are then set to a value at the vertical mid screen position. After a RESET operation the time-base is ARMED and waits for a trigger.

– MULTIPLE SHOT: by pressing the TB TRIG MODE key and the RESET key. In DIGITAL MEMORY mode the contents of the selected register memory are refreshed ONCE after the FIRST trigger is received, and the display memory contents are refreshed ONCE after the SECOND trigger is received. After a reset operation the time base is ARMED and waits for TWO new triggers. NOTE: In this mode the content of the register memory is overwritten.

– TRIGGER DELAY SETTING: by pressing the TRIG DEL UP-DOWN key. The TRIGGER Delay setting offers PRE- and POST triggering. In PRE triggering you can look BEFORE the trigger point. In POST triggering you can look AFTER the trigger point.

Menus and cursor measurements are only available in DIGITAL MODE.

– MAIN MENU: When in DIGITAL mode, the text on the CRT can be activated by pressing one of the five softkeys that are positioned under the CRT. This menu is mainly used to activate the extensive CURSORS menu, the PROCESS menu, or the MEMORY menu. Other selections are SETTINGS and TEXT-OFF.

– CURSORS menu: Once activated two cross-shaped MAIN CURSORS are positioned on the waveform. The trace on which the CURSORS operate can be selected in the SELECT menu. Via the CONTROL menu the two MAIN CURSORS can be separately positioned horizontally on the waveform.

– CALCULATE menu: A pre-selection of either AMPLI-tude or TIME measurements is made via this menu. The following explanation gives details of each measurement possibility.

AMPLITUDE MEASUREMENTS (CALCULATE-AMPLITUDE menu):

– Vpp: calculates the peak to peak value of the signal part between the MAIN CURSORS.

– RMS: calculates the Root Mean Square value of the waveform between the MAIN cursors. This value is referenced to the dotted ground line.

– MEAN: calculates the mean value of the-waveform between the MAIN cursors. This value is referenced to the dotted ground line.

– ABS: calculates the vertical voltage differences between the dotted ground line and MAIN Cursor 1 (C1 value) and MAIN Cursor 2 (C2 value).

TIME MEASUREMENTS (CALCULATE-TIME menu):

– FREQUENCY: calculates the signal frequency provided that at least one signal period is present between the MAIN cursors.

– PERIOD: calculates the duration of one signal PERIOD provided that at least one signal period is present between the MAIN cursors.

– WIDTH: calculates the width of the first pulse seen from the left cursor provided that there is at least one pulse present between the MAIN cursors.

– RISE: calculates the rise- or fall-time (“tr”) of the first signal slope seen from the left cursor provided that there is at least one slope between the MAIN cursors.

ZOOM function:

If part of the signal needs to be examined in more detail the ZOOM function can be used. The main cursors can be set on the wanted trace and on the signal part of interest, using the CURSOR SELECT menu and the CURSOR CONTROL menu. Then by entering the ZOOM menu and activating the RESTART function, if within the limits of time base and delay range, a new acquisition will be made in the adapted time base setting and delay time. This means that the the selected part is resampled using full memory and at a higher sample rate and so higher resolution is used only on the part of interest.

AUTO ZOOM function:

In this mode it is possible to simulate the operation of a delay time-base function by displaying a main time-base signal and a delayed time-base signal together on the screen. The main time-base signal is stored in one of the register memories. When AUTO ZOOM is activated, the MAIN CURSORS are set on the stored signal and the LOCATE CURSORS on the live signal. These cursors indicate the part of the signal that is displayed in more detail and can be shifted across the screen or the time-base can be expanded up or down by means of the softkeys.

The PROCESS menu is an intermediate menu to define which of the two processes, AVERAGE or ENVELOPE, is activated. The two processes can never be active at the same time.

– PROCESS AVERAGE menu: With this function you can suppress noise without loosing bandwidth. Every dot is calculated after every sweep in the following way: new = previous + (measured – previous) / C. In this formula “previous” is a sample on the same position of the previous sweep. “C” is the average-factor; the bigger C is, the slower the dot positions change. The following values for C can be selected: 2, 4, 8, 16, 32, 64, 128 or 256. Once activated, AVERAGE is a continuous process until it is switched off.

– PROCESS ENVELOPE menu: This function stores alternating the minimum and the maximum of each sample position over the sweeps taken. The ENVELOPE is stored in the reference register (R1, R2 or R3) and default displayed together with the acquired signal (display memory R0). Once activated, this is a continuous process until it is switched-off.

The register memories R1, R2 and R3 make it possible to store different waveforms in the oscilloscope memory. These signals remain stored after power down and can be displayed on screen whenever needed. A possible application is signal comparison.

First select one of the register memories with the REGISTERS menu. This menu is entered by pressing the MEMORY softkey and then pressing the REGISTERS softkey. Now load a reference signal into the selected register memory by pressing the LOAD key. In this way all three register memories can be selected and filled with reference signals.

Now a measured (“live”) signal (R0) can be compared with one of the stored reference signals by displaying both on screen simultaneously.

The measured signal can be moved on the screen by means of the Y POS rotary knob. But when the instrument is in the LOCK-mode, the measured signal and the stored signal can be moved on the screen by using the SHIFT function.

Before you are able to plot or print a hard copy, some preparations are necessary:

– Oscilloscope and printer/plotter must be interconnected via a suitable cable.

– The oscilloscope and the printer/plotter must be set up to the correct interface parameters.

All set up actions are done under the APPLICATION preselect menu which can be entered by performing the following action: press the front panel key MENU and keep it pressed. Then press AUTO SET. After this the APPL softkey must be pressed. Selected parameters are visible in the top text area of the CRT.

The plot action is started by pressing the front panel PLOT key. Please note that during the plot action the signal acquisition stops and all softkeys are inactive. Plotting can be stopped by pressing the PLOT key again.

Within this menu a number of operating functions can be selected, that normally do not need to be entered frequently. These functions have relation with the SINGLE SHOT mode, TV triggering and adjustment of plotter/printer and interface parameters. The APPLICATION PRESELECT menu is part of the SERVICE menu.

Proceed as follows to enter the APPLICATION PRESELECT menu:

1. Press MENU and keep it pressed. Now also press AUTO SET.

2. Now the Service menu has been entered, the LCD should indicate “* * *”.

3. Press APPL, which is one of the CRT softkeys.

4. The CRT should indicate “APPLICATION PRESELECT MENU” on the upper side of the screen.

The selections are made with the softkeys under the CRT. The selected functions are displayed in the top text line of the CRT.

– Plotter Parameters (PLOT): By pressing the PLOT softkey a menu is entered, in which the plotter- and printer parameters can be adjusted. When an IEEE-488 or RS-232C interface option is installed, the PLOT menu first offers a selection between PLOT_A (analog plot), PLOT_D (digital plot) or PRINTER (selection with PLOT-KEY).

– Analog Plot Mode: Defines parameters of the analog plot: PLOT SPEED (20…2000 ms in 20 or 100 steps sequence), PENLIFT LEVEL (active high or active low), GRID (plotting or not plotting a grid).

– Digital Plot Mode: Defines the plotter FORMAT, TYPE of plotter and AUTOPLOT mode: FORMAT (0.5 * normal screen … 2 * normal screen), TYPE (PM8153/1, PM8153/6, PM8154, PM8155, HP7475A and HP7550), AUTO (ON for a plot after each single-shot and re-arming, OFF for a plot after pressing the PLOT key).

– Print Mode: Define the AUTO MODE: ON for a print after each single-shot and re-arming, OFF for a print after pressing the PLOT key.

– Single Shot (SNGL_SHOT): In analog single shot mode you can define the single shot sequence when the instrument is in alternated mode: FIRST (single shot is always done on channel A), MULTI (single shot is always done alternated between channel A, B and ADD).

– TV Triggering After Autoset (AUTO): With the AUTO softkey you enter the AUTOSET menu. In this menu it is possible to select the TV triggermode after an AUTOSET command.

– IEEE-488 (Optional): Define the IEEE MODE and IEEE ADDRESS: ADDRESS (between 0..30), MODE (TALK_ONLY, LISTEN_ONLY and TALKER/LISTENER).

– RS-232C (Optional): Define the RS-232C parameters: OUTPUT SPEED (75 … 19200 bits/sec), INPUT SPEED (75 … 1200 bits/sec), PARITY (EVEN, ODD or NONE), STOP BIT (1 or 2), DATA BIT (7 or 8).