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B
3.1
GENERAL INTERCONNECT INFORMATION
3.1.1
Power Inputs
The Processor is powered with +28 VDC and is protected by a circuit breaker
(5 Ampere) in the Aircraft distribution center.
A. 28 Volts Direct Current
J10 - 59 & 82 →
Power:
B. DC Return
J10 - 127 & 128
These pins connect to airframe ground with 22 gauge wire minimum.
The KMH 820/KTA 810 will shut down when the power line dips below +15
VDC. The KMH 820/KTA 810 will resume normal operation (i.e. surveilling
targets) on power restoration (when the power line meets +18 VDC mini-
mum).
3.1.2
On * Discrete
The On * discrete input can be used to turn the unit ON or OFF, if desired. If
not used, it must be grounded.
J10 - 1 →
Rev 3, August/2001
Nominal:
Range:
46 ± 2.3 Watts
NOTE
Ground: (< 10 Ohms to ground)
Open:
10609I03.CDL
+ 28 Vdc A/C Power In.
+ 22 Vdc to + 30 Vdc.
1.3 ± 0.2 Amps @ 28 VDC typical current
1.65 ± 0.2 Amps @28 VDC Max operating
3.3 Amps @ 18 VDC maximum current
( > 100K Ohms)
KMH 880/KTA 870
Page 3- 5
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