Volume 1
MIL-HDBK-162A
Section 3
15 December 1965
ITEM NAME: RADAR DATA GROUP
TYPE: AN/SSA-18(XN-2), AN/SSA-19(XN-2)
Synchro Data: 5-wire, one-speed, 60 cps,
The AN/SSA-19(XN-2) receives and converts narrow
2 to 20 rpm
band radar data to signals which will operate a standard
Transmitter Output Signal: O to2v peak-to-
radar repeater unit and cause it to display a facsimile of
peak, 200 to 6000 cps
the original radar PPI presentation.
Receiver Input: 0.05 to 20v peak-to-peak,
600 ohms impedance
Indicator Signal Requirements
RELATION TO SIMILAR EQUIPMENT
Radar Trigger: 5 to 50v, pos polarity,
60 to 3400 pps, 75 ohms
The AN/SSA-18(XN-2) and AN/SSA-19(XN-2) are similar
Radar Video and Radar Range Marks: 1 to
to the AN/SSA-18(XN-1) and AN/SSA-19(XN-1) respectively.
5v, pos polarity, 75 ohms
IFF Video: 1 to 5v, pos polarity, 75 ohms
TECHNICAL DESCRIPTION
Synchro Data: 5-wire, one-speed, 60 cps
synchro voltages.
Transmitter Input Requirements
Radar Video: 30v, pos polarity, ampli-
Trigger
tude stabilized.
Amplitude: 5 to 50v
Radar Trigger: 10v, pos polarity, 30 pps
Polarity: Positive
Presentation
Impedance: 75 ohms
Transmitter: 5 in. CR tube
Pulse Rate: 600 to 100 pps
Data Inserter: 7 in. CR tube
Video
Indicator: 16 in. CR tube
Amplitude: 1 to 5v
Power Requirements: 115v plus or minus
Polarity: Positive
10%, 60 plus or minus 2 cps, single ph,
Impedance: 75 ohms
2460w
Pulse Width: 1 usec
INSTALLATION CONSIDERATIONS
Not available.
PRINCIPAL COMPONENTS AND PHYSICAL DATA
COMPONENTS
QTY
OVERALL DIMENSIONS
UNIT WT.
(Inches)
(Pounds)
Transmitting Group AN/SSA-18(XN-2)
1
1500
consisting of:
Transmitter Unit
1
18 x 22 x 66
Data Inserter Unit
2
18 x 24 x 66
Receiving Group AN/SSA-19(XN-2)
1
1000
consisting of:
Receiver Unit 1
18 x 22 x 42
Indicator Group IF-403(XN-1)/SSA-19
REFERENCE DATA AND LITERATURE
Technical Manuals:
NAVSHIPS 92953
AN/SSA-18(XN-2): 2
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