MIL-HDBK-162A
Volume 1
15 December 1965
Section 1
ITEM NAME: VIDEO MAPPING GROUP
TYPE: AN4PA-91
Input Capacity: 50 uuf
The map presentation may be attenuated or eliminated
With Probe
at will by manipulation of PPI controls. Changing of
Input Impedance: 5 mego
map areas is simple and, disadvantages such as
Capacity: 20 uuf
interference with echo presentation, are eliminated.
Probe Ratio: 5X
RELATION TO SIMILAR EQUIPMENT
Attenuator: Calibrated 1X to 300X and vernier.
Trigger: Either pos, neg, internal, ext or 60 cycle
None.
Horizontal Sweep: 100, 500, 1000, 2000, 5000
TECHNICAL DESCRIPTION
and 50,000 used
Calibration Voltage: 100 mv calibration signal
Resolution: At max range (on Range 4) lines 0.0025
included.
in. wide and spaced 0.0075 in. apart will be
Operating Temperature: -28 deg C (-18 deg F) to
resolved.
plus 65 deg C (150 deg F)
Synchros: 1X and 36X (16X with gear change) (60
Power Requirements: 120v plus or minus 10%, 60
cycle ref).
cycles plus or minus 5%, single ph
Map TurnTable Speed: From 1 to 30 rpm
Power Factor: 750w at 96.6%.
Map Diameter: 8 in.
Heat Dissipation: 725w
Map Range: 10 to 350 naut mi
Trigger In: 150 to 1600 pps with an amplitude of 0.5
INSTALLATION CONSIDERATIONS
to 100v peak, pos or neg
Related Equipment: This group is used with but not
Internal Trigger: Included and also available
part of Radar Set AN/FPS-37 and Transmitting
externally.
Set, Radio AN/FPN-20A.
Video Amplifier Out: Pos pulses, 5v peak into 72
(Equipment required but not supplied) (1)
ohm load.
Associate Radar Set with Technical Manual; (as
required) Cable RG-59/U; (as required)
Sensitivity: 50 mv per in.
Connector UG-260/U; (as required) Power and
Bandwidth: 10 cycle to 3.5 mc
Signal Cables.
Input Impedance: Either 50, 72, 91 ohms or 1
mego
PRINCIPAL COMPONENTS AND PHYSICAL DATA
SHIPPING DATA
COMPONENT
BOXES
OVERALL DIMENSIONS
UNIT WT.
(NR.)
(Inches)
(Pounds)
Video Mapping Group AN/GPA-91
1
25 x 29 x 54
53U
EQUIPMENT SUPPLIED DATA
COMPONENTS
QTY
OVERALL DIMENSIONS
UNIT WT.
(Inches)
(Pounds)
Video Mapping Group AN/GPA-91
1
22 x 25-3/8 x 40
375
including:
Cabinet, Electrical Equipment
1
22 x 25-3/8 x 40
CY-2828/GPA-91
Panel, Power Distribution
1
SB-1115/GPA-91
Synchronizer, Electrical
1
SN-279/GPA-91
Generator Sweep
1
O-727/GPA-91
Amplifier, Video
1
AM-2507/GPA-91
Power Supply
1
PP-2565/GPA-91
Amplifier, Electronic Control
1
AM-2506/GPA-91
Oscilloscope OS-107/GPA-91
1
AN/GPA-91: 2
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