Filter
Top Products
Operation Overview 33
Monitor Outputs
The IMON and VMON output signals indicate the input current and voltage. A 0-to-10V signal at the appropriate output
indicates the zero-to-full scale input current or voltage. An external DVM or oscilloscope can be connected to monitor the
input voltage and current.
External Programming Input
CC and CV modes can be programmed with a signal (ac or dc) connected to the Ext Prog input. A 0-to-10V external signal
corresponds to the 0-to-full scale input range in CV mode or in CC mode. The external programming signal is combined
with the value programmed via the GPIB or the front panel, so that, for example, a programmed value of one-half full scale
and a 5-volt external programming input would produce a full-scale value at the input.
Figure 2-9 shows the input waveform that would result from the following setup:
CC Mode
High Range
60% Full Scale (programmed via GPIB or front panel)
± 1 V (2 V pk-pk) 1 kHz external programming signal
The external programming signal (+ and - 1 volt) corresponds to + and - 1/10 full scale values at the input (1 volt external
programming input = 1/10 full scale). Therefore, the load’s input current values between 50% and 70% of full scale as
shown in Figure 2-9.
Fault
The Fault signal becomes active if an overvoltage or reverse voltage occurs at the input, as described in the Protection
Features paragraphs.
Figure 2-9. External Programming Example