TM 11-5840-360-14-1-1
11. At both AN/SPA-25 and AN/SPA-66 indicators,
5. Set master Indicator POWER switch to TX ON;
verify the following:
after 3.5 minute time delay, verify the following:
a. Normal sweeps present. /5-24(1)/
b. Video targets displayed. /5-24(1)/
b. Status indicator glows steadily at each
AN/SPS-64(V) Indicator. /5-2(22)/
c. Heading line displayed at 0relative bearing.
6. Keeping the switches in step, set RANGE SELECT
switches of all AN/SPS-64(V) Indicators to each of their
12. At both Control Units C-10260 set FTC switch to
eleven positions in turn; verify the following at each AN/SPS-
0.5 USEC, then 50 NSEC; verify size (depth) of video
64(V) Indicator for each position:
targets displayed on both AN/SPA25 and AN/SPA-66
indicators is reduced progressively. /5-24(25)/
a. Sweep present. /5-8(4)/
13. At Signal Data Converter CV-3442 select North
b. Video targets displayed. /5-8(4)/
Stabilization (NS) display; verify heading line on AN/SPA-25
c. Range rings, electronic bearing line (EBL)
and AN/SPA-66 indicators is displayed at ships heading per
and heading line displayed. /5-8 (4) for faulty
gyro compass and follows changes in ships heading. /5-
Indicator/
24(16)/
d. Correct range and range ring interval readout
14. At Amplifier-Generator AM-6933, verify presence of
(LED's above CRT). /5-8(65) for faulty
a 10OV, 5 + 1 ec pulse at the following PCB terminal (for
s
Indicator/
the mode selected) using an oscilloscope. /5-27(1)/
7. At master Indicator, rotate VRM handwheel two
turns clockwise; verify variable range marker displayed. /5-
MODE
PCB TERMINAL
8(4)/
8. At master Indicator, adjust each of the following
DS-1 (X-band)
EL
controls and verify proper response (per paragraph 3.7) to
DS-6 (S-band)
E3
each:
a. ANTENNA ON/OFF switch /5-8(184)/
15. Set master Indicator RANGE SELECT switch to 24
b. TUNE control /5-8(146)/
MILES. At Receiver Transmitter RT-1240, measure voltage
c. GAIN control /5-8(136)/
indicative of magnetron current between TP7(+) and TP10(-
d. CONTRAST control /5-8(55)/
); correct voltage depends upon type of magnetron installed
as follows: /5-2(51)/
e. INTRF REJECT switch /5-8(136)/
f. PNL LIGHTS control /5-9(1)/
MAGNETRON
VOLTAGE
g. BRG SCALE control /5-9(1)/
h. VRM intensity control /5-8(56)/
Raytheon
3.0 to 3.5 VDC
i. READOUT control (VRM LED) /5-8(87)/
Toshiba
3.0 to 3.5 VDC
j. RANGE RINGS intensity control /5-8(36) /
English Electric
3.5 to 4.0 VDC
k. BRILLIANCE control /5-8(18)/
I. FTE ON switch /5-8(188)/
16. At Receiver Transmitter RT-1240, measure crystal
current of 23 + 5uA between TP10 (ground) and both TP1
m. FLASH OFF switch /5-8(188)/
and TP2 on A1600 assembly. /5-2(53)/
n. PWR BOOST switch /5-8(146)/(3 mi only)
17. Set POWER switches to OFF at all AN/SPS-64(V)
o. ANTI-CLUTTER RAIN control /5-8(43)/
Indicators.
p. ANTI-CLUTTER SEA control /5-8(146)/
18. At Switching Units, select mode DS-2 per Table 3-
q. EBL DIM/EBL READ control /5-8(105)/
r. EBL control /5-8(114)/
19. Repeat steps 4 through 9 above for DS-2 mode per
s. OFFSET control /5-8(136)/
the following definitions:
9. Set master Indicator HGD SET/GYRO STAB/ HD
a. Master indicator: Indicator B
UP switch to GYRO STAB and observe heading line
b. Slave indicators: Indicators A, C, AN/SPA-
bearing. Adjust heading line to agree with ship's compass
25, AN/SPA-66
using HDG SET feature. Verify GYRO STAB indicator
c. Receiver Transmitter: MTR I (X-band)
(LED above CRT) is lit and heading line follows ship's
NOTE:
heading changes.
When step 9 is completed for DS-2
/5-8(136)/
mode, proceed to step 20 below.
10. At master Indicator set RANGE SELECT switch to
24 miles. At AN/SPA-25 and AN/SPA-66 indicators, select
20. Set POWER switches to OFF at all AN/SPS64(V)
display from AN/SPS-64(V) radar. At Control Units C-
indicators.
10260 (mounted on AN/SPA indicators) select HEADING
LINE ON and 1 USEC FTC. At Signal Data Converter CV-
3442 select Relative Bearing (RB) display.
5-10
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