Instruction manual

Figure 3.2.1 Remote Sensing
3.3 CONSTANT VOLTAGE MODE OF OPERATION
To enable the constant voltage mode of operation set the V/I switch (Item 6) to the “V”
position. The unit can now be controlled manually or via an external voltage source.
3.3.1 MANUAL OPERATION
The manual mode of operation is enabled by setting the voltage input switch
(Item 8) to “INT”. To adjust the output voltage turn the “VOLTAGE CONTROL
POTENTIOMETER” (Item 9) to the desired voltage. The output voltage is
displayed on the output voltage meter (Item 11).
3.3.2 EXTERNAL OPERATION
To enable the external control inputs of the unit, set switch (Item 8) to
“External”. Attach an external control signal to binding posts “EXT VOLTAGE
PROGRAMMING INPUT” (Item 10) on the front panel. The red terminal is the
signal terminal and the black terminal is the common. The full-scale input is
±10V with respect to common, the output is directly proportional to the input.
3.3.3 VOLTAGE CHANNEL EXTERNAL GAIN SELECT
The BOS/S is supplied with a ±10V programming for full scale voltage output.
It is possible, through the programming terminal, TB1 on the rear panel, to
change the gain of the preamplifier so remote inputs can be lower than the
±10V set from the factory. The Voltage Preamplifier and TB1 configurations
are shown below.
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83-469-001 Rev. B