3
Cable Tester Unit
1
Power Button
– When off,
press this button to turn
the unit on. When on, press
this button to toggle the
Auto-Off feature on/off, or
hold it down to turn off the
unit.
2
Power Meter / Light
Source Button ( )
– Press
this button to toggle the
LCD screen between the
Power Meter and Light
Source screens.
3
Reference Button ( )
–
When testing for power
loss between an external
light source and the
power meter, hold this
button down to save the
current power loss value.
When saved, this value
will appear in the upper-
right corner of the LCD
screen. Once power loss
data is saved, pressing
this button will toggle
between absolute power
measurement and relative
power loss measurement.
1
2
6
8
7
9
3
4
5
4
Power Measurement Button ( )
– Press this button to toggle
between the available units of measurement that can be displayed on
the LCD screen.
10
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