YOKOGAWA DL6104 (01) PDF Document

The following manuals are provided for the YOKOGAWA DL6104:

Front Panel:

SYSTEM key: Press this key to select the communication interface (USB, Ethernet, etc.).

SHIFT + CLEAR key: Press this key to clear the remote mode (controlled via communications) and enter the local mode, in which key operations are enabled. This action is invalid if the instrument has been set to Local Lockout mode by the controller.

Rear Panel:

USB interface connector: This connector is used to connect the YOKOGAWA DL6104 to a controller (such as a PC) using a USB cable.

Ethernet port (Optional): This port is for connecting the YOKOGAWA DL6104 to a controller (such as a PC) using an Ethernet cable.

PC card slot: Connect a GP-IB card to this slot and then connect to a controller (such as a PC).

USB Interface Functions

Reception Function: You can specify the same settings as those specified by front panel key operations. It receives output requests for measured and computed data, setup parameters of the panel, and error codes.

Transmission Function: It outputs measured and computed data, panel setup parameters, the status byte, and error codes that have occurred.

USB Interface Specifications

Data Rate (Reference Response Times for Analog Signals)

Data Rate (Reference Response Times for Logic Signals)

Switching from Local to Remote Mode:

If the YOKOGAWA DL6104 receives a “:COMMunicate:REMote ON” command from the PC while in local mode, it switches to remote mode.

REMOTE is displayed in the center of the upper section of the screen.

All keys except the SHIFT + CLEAR key are disabled.

Settings entered in local mode are retained.

Switching from Remote to Local Mode:

Pressing SHIFT + CLEAR in remote mode puts the instrument in local mode. However, this is not possible if the instrument has received a “:COMMunicate:LOCKout ON” command from the PC (local lockout condition). When the YOKOGAWA DL6104 receives a “:COMMunicate:REMote OFF” command from the PC, it switches to local mode regardless of the local lock condition.

The REMOTE indication disappears from the screen.

Key operations are enabled.

Settings entered in remote mode are retained.

Note: The USB interface cannot be used simultaneously with another interface (Ethernet or GP-IB interface).

Connect the USB cable by inserting the connector firmly into the USB connector.

When connecting multiple devices using USB hubs, connect the YOKOGAWA DL6104 to the USB hub that is closest to the controller.

Do not insert the USB cable into the GO/NO-GO output terminal. If you do, the instrument may malfunction.

To remotely control the YOKOGAWA DL6104 using communication commands through the USB port, follow these steps:

1. Press the UTILITY key.

2. Press the Remote Control soft key.

3. Press the USB soft key.

4. Select USBTMC from the menu.

5. Restart the YOKOGAWA DL6104 to enable the setting. You must wait at least 10 seconds after turning the power switch OFF before turning it back ON.

Important Notes:

Only the communication interface selected under Remote Control is enabled. The instrument will not accept commands transmitted to other unselected interfaces.

To control the YOKOGAWA DL6104 remotely, you must install the appropriate TMC (Test and Measurement Class) driver on your PC.

You cannot use keys or communication commands to perform file operations when a PC is connected and the Mass Storage setting is enabled. To perform file operations, you must restart the instrument after disconnecting the PC or enabling the TMC setting.

Ethernet/VXI-11 Interface Features

Reception Feature: Allows you to specify the same settings through an Ethernet connection that you can with the front panel keys. It can receive requests for measured data, panel settings, and error codes.

Transmission Feature: Transmits measured and computed data, panel setting data, the status byte, and error codes.

Ethernet/VXI-11 Interface Specifications

Data Transfer Rates (Ethernet Interface – Analog Signals)

Data Transfer Rates (VXI-11 Ethernet Interface – Analog Signals)

Connect a UTP (Unshielded Twisted-Pair) or STP (Shielded Twisted-Pair) cable that is connected to a hub or other network device to the 100BASE-TX port on the rear panel of the YOKOGAWA DL6104.

100BASE-TX Ethernet Port LEDs:

LINK LED: Illuminates when a link is established between the YOKOGAWA DL6104 and another device and they are capable of communicating.

ACT LED: Blinks when packets are being sent and received normally.

Notes about Connections:

Be sure to connect the YOKOGAWA DL6104 to a PC through a hub using straight cables. The instrument may not operate properly if you connect it directly to a PC using a cross cable.

If you use UTP cables (straight cables), make sure they are category 5.

To configure the network settings for remote control:

1. Press the UTILITY key.

2. Press the Remote Control soft key.

3. Press the Network or Network(VXI-11) soft key to display the menu.

4. From this menu, you can configure the following:

User Name and Password: The Ethernet interface has a user authentication feature. Set the user name (up to 30 characters, default is “anonymous”) and password (up to 30 characters). User names and passwords are case-sensitive. When the user name is “anonymous,” you do not need to enter a password.

Timeout Value: The YOKOGAWA DL6104 will disconnect from the controller if it is not accessed for the period of time you specify here.

TCP/IP: To use the Ethernet interface, you must specify the IP address, Subnet mask, and Default gateway.

Note: Only the interface you select after pressing Remote Control is valid. The YOKOGAWA DL6104 does not accept commands transmitted to other unselected communication interfaces. The instrument terminates the connection if there is an error in the user authentication process.

When connecting the GP-IB card and cables, observe the following precautions:

For handling the GP-IB card, refer to its own manual.

Attach the GP-IB correctly with the front face up.

Connect the GP-IB card to the PC card slot first, then turn the YOKOGAWA DL6104 ON.

No more than 15 devices, including the controller, can be connected on a single bus.

When connecting multiple devices, each device must have its own unique address.

Use a cable of length 2 m or less for connecting devices.

Ensure the total cable length does not exceed 20 m.

When communicating, have at least two-thirds of the devices turned ON.

Connect multiple devices in a star or linear configuration. Do not wire them in a loop or parallel configuration.

CAUTION: When connecting or disconnecting communication cables, make sure to turn OFF the PC and the YOKOGAWA DL6104. Otherwise, erroneous operation or damage to the internal circuitry may result.

Listener Capability:

All settings that can be configured with the panel keys can be set through the GP-IB interface, except for power ON/OFF and communication parameter settings.

Receives commands from a controller to output setup information, waveform data, and other information.

Receives status report commands.

Talker Capability:

Outputs setup information, waveform data, and other information.

Note: Listen-only, talk-only, and controller capabilities are not available on the YOKOGAWA DL6104.

Functional Specifications

The YOKOGAWA DL6104 responds to interface messages as follows:

Responses to a Uni-Line Message

IFC (Interface Clear): Clears the talker and listener functions. Stops output if data is being output.

REN (Remote Enable): Switches between the remote and local modes.

Responses to a Multi-Line Message (Address Command)

GTL (Go To Local): Switches to the local mode.

SDC (Selected Device Clear): Clears the program message (command) being received and the output queue. *OPC and *OPC? commands in execution are void. The *WAI and COMMunicate:WAIT commands are immediately terminated.

Responses to a Multi-Line Message (Universal Command)

LLO (Local Lockout): Disables the CLEAR key on the front panel to prohibit switching to the local mode.

DCL (Device Clear): Same operation as the SDC message.

SPE (Serial Poll Enable): Sets the talker function on all devices on the bus to serial polling mode. The controller polls the devices in order.

SPD (Serial Poll Disable): Clears the serial polling mode of the talker function on all devices on the bus.

Note: The difference between SDC and DCL is that SDC messages require talker or listener designation and are directed at a particular instrument, while DCL messages do not and are directed at all instruments on the bus.

Program Messages (Controller to Instrument)

A program message consists of one or more program message units, separated by a semicolon (;). Each unit corresponds to one command. The entire message is ended with a program message terminator (PMT).

A program message unit has the format: <Program header> <Program data>

<Program header>: Indicates the command type.

<Program data>: Optional data required for the command. It’s separated from the header by a space. Multiple data sets are separated by commas (,).

Example: :ACQuire:MODE NORMal<PMT>

Response Messages (Instrument to Controller)

A response message consists of one or more response message units, separated by a semicolon (;). The entire message is ended with a response message terminator (RMT).

A response message unit has the format: <Response header> <Response data> or just <Response data>

<Response header>: Sometimes precedes the response data, separated by a space.

<Response data>: The content of the response. Multiple sets are separated by commas (,).

Example: :ACQUIRE:MODE NORMAL;HRMode 1<RMT>

To avoid communication issues, follow these precautions:

If a program message that does not contain a query is sent, the next program message can be sent at any time.

If a program message that contains a query is sent, a response message must be received before the next program message can be sent. Sending another message before receiving the full response will cause an error.

If the controller tries to receive a response message when there is none, an error occurs.

Deadlock: A deadlock occurs when both the transmit and receive buffers of the instrument become full, causing it to stop operating. To avoid this, keep the program message (including the terminator) below 1024 bytes. A deadlock will never occur if a program message does not contain a query.

There are three types of commands (program headers) that are sent from the controller to the instrument:

Common Command Header: Commands defined in the USBTMC-USB488 standard. The header format always begins with an asterisk (*).

Example: *CLS

Compound Header: Dedicated commands for the instrument, arranged in a hierarchy. A colon (:) is used to specify a lower level in the hierarchy.

Example: :ACQuire:MODE

Simple Header: Functionally independent commands that do not have a hierarchy.

Example: :STARt

The syntax for commands and data follows specific rules and formats.

Syntax Symbols (BNF – Backus-Naur Form)

Data Types

Data contains conditions and values. Common data types include:

<Decimal>: A decimal number (integer, fixed-point, or floating-point).

<Voltage>, <Time>, etc.: A physical value which can include a multiplier (e.g., M for milli, K for kilo) and a unit (e.g., V for Volts, S for Second).

<Character Data>: A predefined character string (mnemonic) selected from a list, e.g., {AC|DC|GND}.

<Boolean>: Indicates ON or OFF, set using ON, OFF, 1, or 0.

<String data>: An arbitrary character string enclosed in single (‘) or double (“) quotation marks.

<Block data>: Arbitrary 8-bit data, used only in response messages.

Header Interpretation Rules

Mnemonics are not case sensitive (e.g., “CURSor” is the same as “cursor”).

The lower-case section of a header can be omitted (e.g., “CURSor” can be written as “CURS”).

A question mark (?) at the end of a header indicates a query and cannot be omitted.

Some commands on the YOKOGAWA DL6104 are “overlap commands,” meaning the next command may start before the previous one is completed (e.g., loading a file). To ensure commands execute sequentially and prevent issues, you can use the following synchronization methods:

Using the *WAI Command: The *WAI command holds subsequent commands until the current overlap command is completed. Placing *WAI after an overlap command forces the program to wait.

Example: :FILE:LOAD:SETup:EXECute "CASE1";*WAI;:CHANnel1:VDIV?

Using the *OPC Command: The *OPC command sets bit 0 (the OPC bit) of the standard event register to 1 when the overlap operation is completed. You can then configure the instrument to generate a service request when this bit is set, and your program can wait for this service request before proceeding.

Using the *OPC? Query: The *OPC? query generates a response (“1”) only after the overlap operation is completed. Your program can send this query and wait for the response before sending the next command.

Using the COMMunicate:WAIT Command: This command halts communications until a specific event is generated, such as a bit changing in the condition register, which can be used to signal the end of an acquisition.

The YOKOGAWA DL6104 uses a system of registers and queues for status reporting, conforming to the IEEE 488.2 standard.

The Status Byte register summarizes the instrument’s status. Each bit has a specific meaning:

Error in Communication Command (100-199)

Error in Communication Execution (200-299)

Error in Communication Query (400-499)