TM 11 5895-1096-40
Table 3-1. Main Assembly Bench Test Control Settings
Table 3-2. Main Assembly Bench Test Procedures -
Continued
Oscilloscope
Test Set
Control
Setting
Control
Setting
Step
Procedure
Result/Indication
Channel 1 deflection 5V/Div, DC POWER
ON
10
(continued)
Channel 2 deflection 5V/Div AC PHASE
NORMAL
b
Test Set.
Display Mode
Chop
MESSAGE
SOI-
(1) PHASE switch-NORMAL
START
(2) MESSAGE switch-SO1-
Trigger Source
Int, CH1
MODULATION
START
CONTINUOUS
Trigger Mode
Auto
CODE SELECTOR
000
(3) MODULATION switch)OFF
Trigger Slope
Positive
(4) CODE SELECTOR-000
Time/Division
2 msec
11
Set test set POWER switch to ON
Display as shown in fi-
Table 3-2. Main Assembly Bench Test Procedures
Repeatedly set the MODULA-
gure 3-2 (g) appears.
TION switch to MANUAL and
release at a rate of twice per se-
Step
Procedure
Result/Indication
cond. Adjust trigger level of oscil-
loscope as required and observe
1
Observe test set POWER indicator
POWER indicator is ON
display.
2
Adjust horizontal, vertical position
Display as shown in fi-
12
Turn test set POWER switch to
None.
and trigger level as required to
gure 3-2 (a) appears.
OFF and perform probe amplifier
observe display.
bench tests (para 3-6(c)).
3
Set MODULATION switch to OFF
Display disappears.
and observe oscilloscope.
Table 3-3. Probe Amplifier Bench Test Control Settings
4
Reset MODULATION switch to
Display as shown In fi-
CONTINUOUS and observe os-
gure 3-2 (a) reappears.
cilloscope.
Oscilloscope
Test Set
Control
Setting
Control
Setting
5
Change CODE SELECTOR to 195
Display as shown in fi-
Channel I deflection
50mv/AC
POWER
ON
and observe oscilloscope
Display Mode
CH 1
All other controls
Any
Trigger Source
Internal
6
Change CODE SELECTOR to 724
Display as shown in fi-
Trigger Mode
Auto
and observe oscilloscope
gure 3-2 /c) appears.
Time/Div
0.2 ,sec/Div
Trigger Slope
Positive
7
Change CODE SELECTOR to 638
Display as shown in fi-
and observe oscilloscope
gure 3-2 (d) appears.
Table 3-4. Probe Amplifier Bench Test Procedures
8
Set MESSAGE switch to SO-2 STOP Display as shown in fi-
and observe oscilloscope
gure 3-2 (e) appears.
Step
Procedure
Result/Indication
1
Adjust the signal generator for an
None.
9
Set PHASE switch to REVERSE and Display as shown in fi-
unmodulated output of 19.250
observe oscilloscope
gure 3-2 (f) appears.
MHz at 2.0 mv RMS.
10
Set test set POWER switch to OFF
None.
2
Adjust vertical position and trigger
A sinewave of 19.250
Change equipment controls as fol-
level of oscilloscope as required
MHz (approximately 4
lows:
and observe display
cycles per div) of about
a Oscilloscope.
28 mv peak-to-peak
(1) Channel 1 deflection-5V/Div,
minimum (fig 3-2 (h))
DC
(2) Trigger Mode - DC
NOTE
(3) Time/Division-20 msec
There will be a 120 Hz ripple on the displayed
signal.
(Not visible at specified sweep
speeds.)
3
Turn signal generator and oscillo-
None.
socpe OFF. Set test set POWER
switch to OFF. Disconnect test setup.
Section II. TOOLS AND EQUIPMENT
(1)
Dual Time Base TD-1159/U.
3-7. Tools and Equipment Required
(2)
Dual Trace Amplifier AM-6880/U.
The following tools and equipment are required to
(3)
Maintenance Kit MK-1752/GRA-114
perform general support maintenance on the TS-
(4)
Multimeter AN/USM-223.
3566/GRA-
(5)
Oscilloscope OS-262(P)/U.
114:
(6)
Probe P6105, 2 meters long.
a. Tools.
(7)
Repair Kit MK-772/U.
(1) Tool Kit, Electronic Equipment TK-100/G.
(8)
Signal Generator SG-1112(V)/U.
(2) Tool Kit, Electronic Equipment TK-105/G.
b. Equipment.
3-8
