Terminal Function Of Rear Board; Remote Sense Compensation Functions - ITech IT8800 Series User Manual

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3.19 Terminal function of rear board

Terminals on IT8800 rear board comprise remote sensor terminal, external
trigger terminal, external analog control terminal, voltage fault indication
terminal, external On/Off control terminal and current monitoring terminal.
Terminal schematic (as shown below):
Pin
Sense+, Sense-
EXT PRG+, EXT PRG-
TRIG
ON
VF

3.19.1 Remote sense compensation functions

Under CC, CV, CR or CP mode, if the load consumes large current, a large
voltage drop will be detected in connection line between tested instrument and
load terminal. To ensure measurement accuracy, a remote sense measurement
terminal is provided at load rear board to compensate voltage drop lost in wire.
Remote sense operation: SENSE (+) and SENSE (-) are remote input terminals.
To avoid voltage drop caused by long input wire of load, the remote sense test
allows direct measurement at input terminal source so as to improve
measurement accuracy.
Operation steps of remote sense measurement:
1. Press [Shift] + [9] keys to enter menu. Operate
Remote-Sense. Press [Enter] key.
2. Select ON and start Sense function. Set load in remote sense
measurement mode.
3. Remote sense measurement is connected. Refer to figure below for
detailed wiring.
that indicates VFD screen status is on). Press [ESC] key to exit setting.
LIST
On Recall Edit
Press [On/Off] key to open input and press [Shift] +
key)
List operation.
Copyright © ITECH Electronic Co., Ltd.
Pin function
Remote sense terminal
External analog control terminal
Negative input terminal for TRIG, ON and VF
Positive input terminal for trigger
Positive input terminal for external On/Off control
Positive input terminal for voltage fault indication
Function and Features
key (Triggering
key and select
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