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| MIL-T-63534(AR)
TABLE III. Electronic characteristics (continued)
Characteristics
Function
Connector
Low Level Ground bus.
Cos EL Return
J3-H
0-12 Vrms 400 Hz +5% sinusoidal,
Cos EL Input
J3-J
input impedance of one megohm
minimum.
Chassis ground.
Shield
J3-L
Low Level Ground bus.
Limit Switch Ground Return
J3-M
Normally +2.5 to 4.0 Vdc above
Emergency Stow Action Initiate
J3-N
ground (Diode isolated with
Input
anode at J3-N).
O to +90 Vdc from d-c
Azimuth Tachometer Input
J3-R
generator o
Ground bus.
Return for J3-R
J3-P
O to +90 Vdc from d-c
J3-T
Elevation Tachometer Input
generator.
Ground bus
Return for J3-T
J3-S
Connection to 28 Vdc (low
Limit Switch Power SUpplY
J3-U
level ) a series with 27 (+10%)
output
ohm 1 watt resistor and a 3O
volt (+5%) zener diode shall be
acrossthe output. (J3-U to
J2-E)
Pulses of 28 Vdc (high level).
Turret Down Drive (when enabled)
J4-A
Peak amplitude of varying width
by an error signal at J1-B and
at a repetitive rate of 600 Hz.
28 Vdc at J1-K)
Output load (split series motor)
shall be 0.1 ohms minimum in
series with 150 H + 20% which
saturates at 30 A. Each output
shall have a coasting diode for
back EMF protection.
Same characteristics as J4-A.
Turret Up Drive (when enabled)
J4-C
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