14
Names and Functions of Parts
1.2 Names and Functions of Parts
Front
IR4056, IR4057-50
(The illustration shows the IR4057-50)
1065 97 8
1
Display
32
(p. 8)
(p. 19, p. 22,
p. 34, p. 40)
4
(p. 8)
Top
1
MEASURE key (p. 16) Starts insulation resistance measurement.
2
EARTH terminal Connects the black test lead.
3
CONTROL terminal
Controls L9788-10 Test Lead with Remote
Switch (Red)
4
LINE terminal Connects the red test lead.
5
Rotary switch Selects measurement functions.
6
LIGHT key
Turns on and off the backlight.
7
0
Ω
ADJ key
Performs zero-adjustment for the low
resistance range.
Press with the COMP key simultaneously:
congures the wireless communications
function (p. 51) (IR4057-50)
8
Live circuit indicator
Lights up when voltage remains between
input terminals.
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