Using External Signal In Dc-Vca Mode - NF DP420LS Instruction Manual

4. Advanced Operation

4.17.2 Using External Signal in DC-VCA Mode

In the DC-VCA mode, the setting value of the output DC voltage (DCV) is set according to the
following figure, by using the gain setting value and the voltage of the external DC signal.
DCV (V) = Gain x External DC signal voltage (V)
For the specifications of the gain setting range and the external DC signal input voltage range, see
11.22.2.
-------- Notes ------------------------------------------------------------------------------------------------------------
 The gain setting value is retained for each of 100 V/200 V ranges and for each of AC/DC
modes.
 Within the same range, the same value is retained for the gain setting value, regardless of the
combination of the signal sources (VCA, EXT, ADD).
 When the switching from DC-VCA mode to ACDC mode, the signal source is forcibly set to
INT.
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 Examples
When the gain is 100, and the external DC signal voltage is 1 V, the output will be a DC voltage of
100 V.
 Operation procedure
1. Turn off the output, and enter the DC mode. Following two methods are available.
(a) Shortcut operation:
Every time you press the keys, the mode is switched to AC, ACDC, and DC in this order.
(b) Press the [Osc] soft-key and select [1:AC/DC]. From the opened menu, select [3: DC].
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PROGRAMMABLE AC POWER SOURCE