56-101-00930 Revision H
Page 5
CHAPTER 2: OPERATION
1. OPERATING CONTROLS
A. The functions of the front panel switches and components are as follows (refer to Figure 5):
Figure 5
TT1200A Front Panel & Switches
1. The
PWR
(power) pushbutton, when pressed, applies power to the TT1200A and begins the
initialization process.
2. The
BKLT
(backlight) pushbutton, when pressed, provides a backlight to the LCD to
improve readability under dim lighting conditions. A second press of the key turns the
backlight off. (The backlight goes out automatically five minutes after activation to conserve
batteries, unless the “BKLT auto-off” feature is disabled by pressing the BKLT pushbutton
for 2 or more seconds.)
3. The
TEMP ADJ
control knob allows coarse adjustment of the temperature. When the
FUNCTION is in the IND Test position, the display shows millivolt readings.
4. The
FINE
control provides exact adjustment of the temperature or millivolt readings shown
on the display when the FUNCTION switch is in the IND TEST position.
5. The
FUNCTION
switch is a four-position rotary switch that allows selection of the four main
test functions:
a) RES MEAS (Resistance Measure)
b) INS MEAS (Insulation Measure)
c) IND TEST (Indicator Test)
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