Volume 1
MIL-HDBK-162A
Section 3
15 December 1965
ITEM NAME: DATA SWITCHING GROUP
TYPE: OA-496/SSA
Output Impedance
Ten radar selector switches with amplifiers supplying
Video Amplifiers: 70 ohms
video and trigger signals to remote repeater stations and
Trigger Amplifiers: 70 ohms
two power supplies are mounted in each data switching
Operating Power Requirements: 115v, 60
group cabinet.
cps, 3-ph at 10 amp; 115v, 60 cps,
The equipment serves as part of a radar data
1-ph at 4 amp.
distribution group for naval vessels.
Ambient Temperature Range: -28C to plus
65C.
RELATION TO SIMILAR EQUIPMENT
Heat Dissipation: 300w
None.
INSTALLATION CONSIDERATIONS
TECHNICAL DESCRIPTION
Related Equipment: Used in conjunction
with Amplifier Assembly AM-518/SSA,
Frequency Range: 20 cps to 15 mc
Rotary Switch SA-243/SSA and Rotary
Input Impedance
Switch SA-247/SSA.
Video Amplifiers: 70 ohms
Trigger Amplifiers: 70 ohms
PRINCIPAL COMPONENTS AND PHYSICAL DATA
SHIPPING DATA
COMPONENT
BOXES
OVERALL DIMENSIONS
UNIT WT.
(NR.)
(Inches)
(Pounds)
Data Switching Group OA-496/SSA
42 x 51.4 x 84
1515
EQUIPMENT SUPPLIED DATA
COMPONENT
BOXES
OVERALL DIMENSIONS
UNIT WT.
(NR.)
(Inches)
(Pounds)
Data Switching Group OA-496/SSA
1
23.5 x 25.6 x 71.49
925
REFERENCE DATA AND LITERATURE
Technical Manuals:
NAVSHIPS 92256(A):
for Data Switching Group OA-496/SSA,
OA-496A/SSA and Associated Units:
Amplifier Assembly
AM-518/SSA
Rotary Switch
SA-243/SSA
Rotary Switch
SA-247/SSA
OA-496/SSA: 2
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