3
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1.3 Names and Functions of Parts
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1
2
3
4
5
6
7
8
9
10
11
12
13
14
A
1
2
3
4
5
6
7
8
9
10
11
12
13
14
A
Test terminals
Liquid crystal display
Contrast adjustment knob
Power switch
Front View
1.3 Names and Functions of Parts
Liquid crystal display
This is a 5-inch liquid crystal display fitted with a touch panel. It also
serves to provide input keys.
Power switch
Turns the power for the unit on and off.
Contrast adjustment knob
This knob adjusts the screen contrast. Turning it clockwise decreases the
contrast, and vice versa.
Test terminals
There are five test terminals:
H
CUR
The test signal is supplied to this terminal.
H
POT
Detected voltage high terminal
L
POT
Detected voltage low terminal
L
CUR
Test current detected terminal
GUARD
Guard terminal
These test terminals are designed according to the safety standard;
Pollution Degree 2, Measurement category I.
