NF ZM2371 - Outline of GPIB; Preparation of Controller; Preparation of ZM2372; Precautions on Use of GPIB

5.1 Preparations Before Use
5-10 ZM2371/ZM2372
5.1.4 Outline of GPIB
The GPIB interface was designed to be used in favorable environment. Avoid the use in a
place with much noise.
5.1.4.1 Preparation of Controller
Install commercially available GPIB card or controller board in the computer for control and
connect with the GPIB cable. For the GPIB driver software, refer to the instruction manual
of the GPIB card or controller board used.
5.1.4.2 Preparation of ZM2372
For the GPIB, the device in the system is identified with the device unique address. Set a
unique GPIB address to each device. The GPIB address of the ZM2372 is set through the
procedure given below.
 GPIB address setting
Select GPIB with the remote control interface setting menu, and the GPIB address setting
menu as shown below is displayed.
GPIB Address: 2 Current setting
0 to 30 Range of settable values
Perform the EXIT operation to return to one-previous menu.
If the GPIB address is set, the result is displayed for a moment, and one-previous menu
comes back.
 Message terminator
A terminator indicating the termination is required at the end of a set of commands or
response.
The response message terminator that ZM2372 transmits is fixed to LF^EOI.
The program message terminator that ZM2372 receives is either of the followings:
• LF Line Feed code
• LF^EOI LF accompanied by EOI (END message)
• (Last code)^EIO EOI (END message) added to the last code
5.1.4.3 Precautions on Use of GPIB
• Connect or disconnect the GPIB connector with all devices connected to the bus turned
off.
• Turn on the power of all devices connected to the bus when using the GPIB.
• The number of devices connectable to one bus via GPIB is maximum 15 units including
the controller.
Also, the cable length is limited as follows:
− Total cable length ≦ (2m  Number of devices or 20m, whichever short)
− Length of one cable ≦ 4m
• For GPIB address, set a different value for each device. If plural devices having same
address exist on one bus, the devices may be damaged due to the conflict of output.