Volume 1
MIL-HDBK-162A
Section 2
15 December 1965
ITEM NAME: DECODER GROUP
TYPE: OA-3369/APX-7
Baseline: Ground
RELATION TO SIMILAR EQUIPMENT
Output Signals
None.
Video Output: Either same as IFF video input or
mixed with range azimuth gate
TECHNICAL DESCRIPTION
Range Azimuth Gate: Series of pulses supplied to
Input Signals
video input of associated azimuth range indicator
SIF Code Inputs: Mode 1, 2 or 3 reply pulses received
for display atarget sector gate
from Video Decoder KY-364/APX via 12 parallel
Amplitude: 2v
lines
Polarity: Positive
Amplitude: 5.6v
Baseline: Ground
Pulse Width: 0.5 usec
Power Requirements
Polarity: Negative
Supply Voltage: 28 plus 1, -3v dc
Baseline: plus 11.2 plus or minus 0.6v dc
Current
Read Gate: Gate pulse received from
Decoding Circuitry: 0.73 amp at 28v
Video Decoder KY-364/APX for ea SIF code train
Indicator Lamps: 0.48 amp at 28v (max brightness)
Amplitude: 6v
Panel Lamps: 0.8 amp at 28v (max brightness)
Pulse Width: O.13 usec
Total Power Consumption: 36w nom
Polarity: Negative
Reference Voltage from KY-364/APX: 11.2 plus or minus
Baseline: plus 11.2 plus or minus O.6v dc
6v dc
IFF Video Input: Video pulses received from Video
INSTALLATION CONSIDERATIONS
Decoder KY-364/APX
Amplitude: 2v
Related Equipment
Polarity: Positive
Required but not Supplied: (1) Video Decoder KY-
Baseline: Ground
364/APX; (1) Radar Recognition Set AN/APX-7;
Range-Azimuth Enabling Signals: Received from
*(1) Azimuth Range Indicator IP-203B/APS-20B
associated azimuth range indicator that has been
or IP-414A/APA-125 or IP-229/APA-56; **(4)
modified to provide these signals
Cable Electrical; **(4) Cable Coaxial.
Azimuth Signals: 26v, 400 cyc reference voltage
NOTE: *Azimuth-Range Indicator must be modified
and phases 1 and2 ranging from 0 to 22v rms
Range Strobe Pulse
for use with the pulse decoder and control
Amplitude: 10 to 25v
indicator.
Pulse Width: 1 plus or minus 0.7 usec
**Fabricated at time of installation.
Polarity: Positive
PRINCIPAL COMPONENTS AND PHYSICAL DATA
COMPONENTS
QTY
OVERALL DIMENSIONS
UNIT WT.
(Inches)
(Pounds)
Pulse Decoder KY-384/APX-7
1
5-9/16 x 6-5/16 x 14-3/4
8.75
Control Indicator C-3707/APX-7
1
5-3/4 x 7-1/8 x 7-1/4
6.50
Mounting MT-2648/APX-7
1
2-1/8 x 5-3/4 x 14-1/4
1.00
REFERENCE DATA AND LITERATURE
Technical Manuals:
NAVWEPS 16-35OA3369-1: Handbook of Operation instructions.
NAVWEPS 16-350A3369-2: Handbook of Service instructions.
NAVWEPS 16-35OA3369-3: Handbook of Overhaul instructions.
NAVWEPS 16-35OA3369-4: Illustrated Parts Breakdown.
OA-3369/APX-7: 2
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