MIL-HDBK-162A
Volume 1
15 December 1965
Section 1
ITEM NAME: RADAR BOMB SCORING CENTRAL
TYPE: AN/MSQ-35
at half power points
plus 12v at 15.6k source impedance
Type of Feed: Coaxial
equals 1; 0v through a 10 k source
Transmission: Coaxial
equals 0.
Digital System
Displays
Digital Recorder-Printer
Nixie Readout: 6 digits; up to 23
Column Capacity: 11 columns (11 digits
hrs 59 minutes and 59 sec
per line including blank)
Time Base: 10 kc crystal controlled
source, stable to 5 parts in 106
Print Rate: 5 lines per sec (3300
characters per minute)
per week
Number Wheels: 12 positions having positions
Communications Control Console
0 through 9, an asterisk, and
Input Power Required: 117v, 60 plus or
a blank space
minus 3 cyc, 2 amp
Impedance
Input Circuits: Six receivers (audio);
On Line: 500 ma at ground, 1 ma at
high impedance and low impedance microphone;
-6v
600-ohm line; intercom audio
Off Line: Greater than 1 mego
from remote stations
Print Command
Output Circuits: Keying and audio modulation
Positive Pulse Voltage: 10v
for six external transmitters;
Pulse Duration: 10 usec min
Audio drive for local and remote loud-
Line Spacing: Single or double, automatic
speakers (receiver, microphone, and
paper advance
intercommunications), and one or two
Input Power: 115 plus or minus 20v,
tape recorders (receiver, microphone,
60 cps
and intercommunications)
Temperature: 0C to 55C
Primary AC Power
Relative Humidity: 70% max
Requirement
Digital Ratiometer
208 plus or minus 5v, 3-ph, 4-wire
DC Voltage Specifications
(wye)
Range B: .0001 to .9999v
60 plus or minus 5% cps, 20 kw
Range C: 0.001 to 9.999v
208 plus or minus 5v, 3-ph, 4-wire
Range D: 00.01 to 99.99v
(wye)
Range E: 000.1 to 999.9v
400 plus or minus 5% cps, 20 kw
Accuracy: plus or minus .01% or 1 digit
Signal Input Impedance: 1000 meg at
INSTALLATION CONSIDERATIONS
balance on plus or minus .9999 and
plus or minus 9.999v ranges; 10.1
Siting: The general area at which the central is to be located
mego on plus or minus 99.99 and plus
should be relatively flat.
Radar Search should be
or minus 999.9v ranges
possible
for 6400 mils in azimuth, and obstructions
Average Reading Time (No Filter): 20
such as tall
buildings, towers, and land masses should
ms
be avoided.
The operations trailer must be located 100
Maximum Balance Time (No Filter): 200
to 225 feet
from the acquisition radar group.
ms
DC/DC Voltage Ratios
Ranges: Same as above
Mounting: The equipment is self-contained in the trailer.
Accuracy: Same as above
Cabling Requirements: Primary power cables may be run
Signal Input Impedance: Same as above
through conduits (wood, preformed concrete, or tile);
External Reference Voltage: 10v plus
however, covered raceways are preferred in a semi-
or minus 10%
permanent installation. When vehicular traffic cannot be
External Reference Input Impedance:
avoided, provisions for crossing, without damage to the
1000 mego
cables, must be provided.
Average Reading Time (No Filter): 20
ms
Related Equipment: Interrogation Set AN/ TPX-27 and Motor
Maximum Balance Time (No Filter): 2000
Generator MD-4.
ms
Digital Clock
Input Power: 115 plus or minus 10v,
60 cps, 15w
Output: BCD coding, pos true; -8v at
2.2k source impedance equals 0; 0v
at 5 ma equals 1. 10 line decimal,
AN/MSQ-35: 5
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