Function and Features
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3.19.2 External trigger function
When rear board triggering mode is selected, firstly, set the trigger source as
External and the triggering signal is input from the rear board TRIG terminal.
Press [Shift] + [8] keys to enter system menu. Click Right key till Trigger
appears and flicks. Press [Enter] to entry and press
to select
External. Press [Enter] for confirmation. Press [ESC] to exit the menu.
When external trigger is selected, the positive and negative TRIG terminals will
generate trigger signal and the low pulse is valid.
Input corresponding to one trigger can be used for triggering dynamic test, LIST
test and auto test.
3.19.3 External analog quantity test
Loading voltage or current of the electronic load can be controlled by EXT PRG
(positive and negative) analog quantity terminals on rear board. Connect 0-10V
adjustable voltage at the EXT PRG terminal to analog input from 0- full range so
as to adjust input voltage and current of load (10V corresponds to voltage or
current of load at full range).
3.19.4 Voltage fault indication
When load is under overvoltage protection or terminal reverse polarity
protection, VF pin voltage fault indication terminal outputs high level.
3.19.5 External On/Off Control
The load input switches can be controlled by the external TTL electrical level.
During external input control, the [On/Off] key will become invalid and the load
input switches can only be controlled by the external TTL electrical level. The
load input will be switched on in case of low level external input; and the load
input will be switched off in case of high level external input.
3.19.6 Current monitoring (I Monitor)
The 0-10V analog quantity output signal of current monitoring output terminal
represents input current to which the terminal belongs from 0 to full range. An
external voltmeter or oscilloscope can be connected to display input current
change.
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