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Gossen Metrawatt GmbH
3.5
Connections on the Front Panel
The terminals of the electronic load on the front panel include input terminals (INPUT+, INPUT-), remote sense terminals (SENSE +,
SENSE -), and an external trigger input terminal. See Figure 3.2.
Figure 3.2
Connections on the Front Panel
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.
The 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
The external trigger input terminal on the front panel is a BNC connector, in which the middle part is the input+, and the outer casing is
the input-. It receives 5 V TTL-compatible falling-edge trigger signals.
3.6
Wiring
Sense Connections
As the influence of connected power and the conductor resistance of the load, the voltage at the input terminals will be lower than out-
put voltage when the current flows across the load, When greater accuracy of voltage test is needed, it is necessary to connect Sense
input, and the load will switch to Sense status automatically. The relevant wiring is shown as Figure 3.3.
Figure 3.3
Measuring terminals
Parallel Connections
Figure 3.4 illustrates how two or more loads can be paralleled in CC /CR mode when high power or large current is needed.
Figure 3.4
Parallel Connection
Power supply to be tested
Power supply to be tested
