MIL-DTL-62481A(AT)
A
GND
GND
A
C
+V
+V
C
KEY 1
D
KEY 1
D
KEY 2
E
KEY 2
E
KEY 3
F
KEY 3
F
TO
TO
KEY 4
H
KEY 4
H
DISTRIBUTION
DISTRIBUTION
RCVR 1
J
RCVR 1
J
UNIT
UNIT
MIKE 1
K
MIKE 1
K
OR
OR
RCVR 2
M
RCVR 2
M
OTHER
OTHER
MIKE 2
N
MIKE 2
N
CREW
CREW
INTERCOM
R
INTERCOM
R
CONTROL
CONTROL
RCVR 4
S
RCVR 4
S
UNIT
UNIT
RCVR3
T
RCVR3
T
MIKE 3
U
MIKE 3
U
MIKE 4
V
MIKE 4
V
B
B
L
L
P
P
J802
J803
A
A
GND
GND
B
B
HEAD SET
HEAD SET
AMPLIFIER
AMPLIFIER
TO
TO
OUTPUT
OUTPUT
HEAD
C
C
HEAD
INTERCOM
RADIO PUSH
SET
SET
PUSH TO TALK
TO TALK
D
D
MIKE IN
MIKE IN
E
E
FIGURE 1. Control unit electrical interface.
3.5.2.2 Headset output power. The headset output shall be capable of delivering
200 milliwatts (mW) minimum into 500 Ω at 1000 Hz. The output shall not be damaged by
operating into a short circuit.
3.5.2.3 Radio to headset frequency response. The radio to headset frequency response
shall be as shown below with output terminated into 500 Ω.
Frequency
500 Hz
1000 Hz
3000 Hz
0 dB (Reference)
+7 dB
Output Level
+2 dB
3.5.2.4 Radio to headset distortion. The radio to headset total harmonic distortion shall
be less than 5% with output delivering 200 mW rms into 500 Ω at 1000 Hz.
5
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