Keysight U2781A, User Manual, Page: 41 / 45

Features and Functions 2
Keysight U2781A User’s Guide 41
Modules Identification
You may have more than one module or chassis connected to the same host PC.
The following figure illustrates an example of the connection.
Figure 2-9 Identifying modules location
To identify the location of the modules, a pre-configuration setting is needed
before the synchronization or triggering event begins. Follow the steps below:
1 Send the following command to the modular chassis to trigger it. This
command will be used to transmit the number to all USB modules via Trigger
Bus (TRIG [0..7]). You can choose from 0 to 255 for your chassis number.
SYSTem:IDentity {0|1|2|3…|255}
2 Send the following command to every module in the chassis to query each of
the slot and chassis numbers.
SYST:CDES?
NOTE
Select 0 to disable the output. The modular chassis will not be triggered to send
any output to the USB modules.