33
7 - Not used
8 - Not used
9 - Not used
The interface parameters can be set in the MENU, and you can use SCPI language for
programming to realize the communication with the load.
GPIB Interface:
The load provides a GPIB interface, and you can set its address to any value between 0
and 30 in MENU. When multiple GPIB devices are connected, each device on the GPIB
interface must have a unique address that is not be used by the devices on other interfaces.
The address is set to “05” when the load is shipped from the factory.
USB Interface:
The load provides a USB interface. You need to install the software provided by the
factory in PC to realize communication with the load.
USB and GPIB interfaces occupy the same expansion slot on the rear panel, so only one
type interface can be chosen to install at the same time, meanwhile, only one type interface
can be used by the load to communicate with external devices.
3.5 Connections on the Front Panel
The terminals of 372x Series electronic load on the front panel include input terminals
(INPUT+, INPUT-), remote sense terminals (SENSE +, SENSE -), and an external trigger
input terminal. See Fig. 3-2.
Fig.3-2
Input Connections
Input connections are made to two binding posts (INPUT+, INPUT-) on the front panel.
The maximum wire diameter is 6mm. In order to enhance the test accuracy, and reduce the
test error when executing large current test, it would be better to use thicker wire.
Remote Sense Terminals
Remote sensing is made to two terminals (SENSE+, and SENSE-). It compensates for
the voltage drop caused by the power supply and input wire resistance to achieve greater
accuracy.
372x Series electronic load can detect remote voltage inputs automatically, so there is no
need to modify the parameter settings or change the hardware wiring when using remote
sensing.
External Trigger Input Terminal
