TM 11-6625-596-12
Sequence
Item
Procedure
Reference
4
Fuses
Check to see that the fuses are of correct value.
App B
5
Power switch guardplate.
See that the power switch guardplate is so positioned that
Par0 2-5.
only the correct voltage will be applied when equipment
is turned on.
6
Coupler assembly
Check the housing of the test loudspeaker and test micro-
phone for cracks, other damage, and dirt
7
Cables and connectors.
Check to see that all cables are connected securely All con
8
Controls and indicators While making the operating checks (sequence No. 9 through
32), observe that the mechanical action of each knob,
pushbutton, and switch is smooth, and free of external
or internal binding, and that no excessive looseness Is
apparent.
Set the controls to the following positions before applying
Fig. 5-1.
9
Preliminary settings
power to the TS-716/U
a Power switch .....................................................................
OFF
b NOISE GEN ADJ button ......................................................
Depressed.
c CALIBRATE controls.
(1) NOISE GENERATOR ........................................................
fully ccw
(2) METER SENSITIVITY .......................................................
fully ccw.
(3) INSULATION RFSISTANCE .............................................
fully ccw.
(4) DIAL SPEED .....................................................................
fully ccw.
(5) DIAL BREAK .....................................................................
fully ccw
d NOISE GENERATOR switch ...............................................
LOAD.
e. TEST CONDITION switch ...................................................
COUPLER.
f. MICROPHONE LOAD switch ...............................................
OFF
g RECEIVER LOAD switch ....................................................
OFF.
h. MICROPHONE CURRENT switch ...................................
OFF.
10
Coupler assembly
Set up the coupler with the test microphone directly over
and touching the screen of the test loudspeaker.
11
LEVEL and VALUE
Set the LEVEL and VALUE controls as follows
controls.
A ............................................................................ 10
B ............................................................................ 8
C ........................................................................... 6
D ............................................................................ 9
12
Power switch
Turn on. Note that the POWER ON indicator lamp lights.
13
NOISE GENERATOR
Adjust control until meter pointer moves to CAL position
CALIBRATE control
(red mark at midscale)
NOTE
The meter pointer will fluctuate slightly. Set the control so that the
meter pointer swings equally to both sides of the red CAL mark.
14
METER ADJ button and
Depress METER ADJ button Adjust METER SENSITIV
METER SENSITIVITY
ITY control until meter pointer can be set to red CAL
CALIBRATE control.
mark
3-2