TM-9-1200-215-34-P
AUTOMATIC FIRE CONTROL SYSTEM (AFCS)
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL
FEBRUARY 1999
TM-9-1200-215-34-P - Page 26 of 266
TM 9–1200–215–34&P
1–14
ELECTRICAL
Communications interface
SINCGARS (AN/VRC–89) compatible with TACFIRE
FSK messages.
Remote terminal communication
MIL–STD–1553B data bus.
Input power supplied to PCU
+28 Vdc +0.25 Vdc @ maximum of 50 amps, with
+18.0 Vdc to +32.0 Vdc
range.
Maximum PCU transient protection
+250 volts for 0.1 millisecond @ maximum energy of
<15 millijoules.
DC grounding resistance
<2.5 milliohms at each binding joint.
Electrical harness shield bonding
5 milliohms to a mating connector.
Shielded interconnect cables
Attenuation of at least 40db to electric fields of 10Hz to
400MHz; RF backshell adapter to shield resistance of
up to 5 milliohms.
Input power supplied to PDIU
+24.0 Vdc, with +18.0 Vdc to +33.0 Vdc range.
AFCS PERFORMANCE
Servo gun tube response
Azimuth and elevation within 1 mil.
Servo gun tube control:
traverse
Azimuth: 1422 mils in 22 sec
Elevation:
1000 mils in 11 sec
AFCS SURVIVABILITY
NBC decontamination/cleaning temperature
Do not exceed 180
°
F (82
°
C).
Decontamination water pressure
9 to 11 psi.
1–19.
EQUIPMENT CONFIGURATION
The AFCS system equipment, the cable interconnects, and the electrical layout of the system units are designed
to one configuration only.
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