Analogue Function (Ext-Program) (Optional) - ITech IT-M3900C 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 10 V 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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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.
Remotely control voltage and current lower 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
159