Analogue Function (Ext-Program) (Optional) - ITech IT-M3900D Series User Manual

5.12 Analogue Function (Ext-Program) (Optional)

The external analog quantity function means that the user can input an analog
signal in the range of –10V to 10V through the analog quantity input interface
for remote setting of the instrument's input setting value. The external analog
quantity function is not the standard-equipped function for the instrument. It is
only available when the user selects the IT-E177 interface card.
The rear panel of this series of instrument provides an optional interface card in-
tegrating the RS-232 and analog quantity function. The interface card provides
the following capability:
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•
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Analog Card Interface Introduction
The analog function interface is located on the optional IT-E177. The pins de-
scription is as below.
Pins
1, 2, 3
4
Remotely control voltage and current values.
Remotely control voltage and current upper limit values.
Remote monitoring of output voltage/current measurement.
RS-232 communication interface, please refer to
(Optional) for detailed description about the interface.
Name
TXD,
RXD,
DGND
GND
Copyright © Itech Electronic Co., Ltd.
Type Description
Commu- RS232 interface connection terminal.
nication
terminal
Ground Ground for analog inputs and outputs.
Basic Operation
2.5.5 RS–232 Interface
97