Volume 1
MIL-HDBK-162A
Section 3
15 December 1965
ITEM NAME: INDICATOR GROUP
TYPE: AN/SPA-37
Negative Gate: 90v neg pulse, 90 usec wide
RELATION TO SIMILAR EQUIPMENT
Fast Scan Trigger: 155v pos pulse, 100 usec wide
Count Down Trigger: 60v pos pulse, 10 usec wide
None.
Time Sharing Gate: 100v neg pulse, 500 usec wide
Screen Diameter: 12 in.
TECHNICAL DESCRIPTION
Viewing Diameter: 10 in.
Range Accuracy: plus or minus 1.C% of total scale.
Input Data
Power Supply: Self contained.
X-Modulation: Sine wave, 6v peak-to-peak; Sine
Operating Power Requirements: 115v ac plus or minus
wave, 14v peak-to-peak; saw tooth, 0 to plus or
10%, 60 cps, single ph
minus 100v
Y-Modulation: Sine wave, 90 deg ph shifted from x-
INSTALLATION CONSIDERATIONS
modulation on 6v peak-to-peak; Sine wave, 90
deg ph shifted from x-modulation, 14v peak-to-
Related Equipment: The AN/SPA-37 is designed to
peak; saw tooth, 0 to plus or minus 100v
be used with but not part of AN/SPA-26(V),
X-Position: dc analog between plus or minus 50v
AN/SPS-6 and AN/SPS-29.
Y-Position: dc analog between plus or minus 50v
Positive Gate: 90v pos pulse, 90 usec wide
PRINCIPAL COMPONENTS AND PHYSICAL DATA
COMPONENTS
QTY
OVERALL DIMENSIONS
UNIT WT.
(Inches)
(Pounds)
Indicator, Azimuth-Range IP-456/SPA-37
1
0.38 x 25-1/2 x 29
Power Supply PP-560A/SP
1
20-3/8 x 22-1/4 x 30-3/8
Power Transformer TF-129/SP or
1
8-1/8x 12-7/8 x 23-11/16
TF-129A/SP
Overlay, Conducting Glass MX-2320/SPA-26
1
4-1/2 x 14-3/B dia
2
Accessory Kit
1
REFERENCE DATA AND LITERATURE
Technical Manuals:
NAVSHIPS 93342
AN/SPA-37: 2
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