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|  MIL-R-50749(MU)
8 August 1973
3.3.1.11 Primary power transient. The Range readout
shall not change under the following conditions:
+1
a. When the input voltage is dropped to +6 -0 volts for
a duration of 100 + 1O milliseconds.
+0
b. When the input voltage is increased to +90= -5 volts
for a duration of 100 + 1O milliseconds.
3.3.1.12 Malfunction indication.
3.3.1.12.1 Overvoltage. When an overvoltage condition
occurs in the PFN circuitry, the number "4" shall be displayed in the
least significant digit position of the RANGE readout and the MALF lamp
shall illuminate.
3. 3.1.12.2 "A" trigger reply. When a malfunction occurs
in the "A" trigger reply circuitry, the number "3" shall be displayed in
the least significant digit position of the RANGE readout and the MALF
lamp shall illuminate.
3.3.1.12.3 "A" trigger and counter. When a malfunction
occurs in the reply gating or counter circuit card, the number "2" shall
be displayed in the least significant digit position of the RANGE readout
and the' MALF lamp shall illuminate.
3.3.1.12.4 Battery charging. When a malfunction occurs
in the battery charging circuitry, the number " 1" shall be displayed in
the least significant digit position of the RANGE readout and the MALF
lamp shall illuminate.
3.3.1.13 Dimming (DMR) switch.Depressing the DMR
switch on the commanders control shall cause all indicator lamps to
change either from bright to dim or from dim to bright.
3.3.1.14 Test (TSW) switch. Depressing the TSW switch
on the commanders control shall cause the number "8" to appear on the
RANGE and RETURNS readouts and all indicator lamps shall Light.
3.3.1.15 Sight/transmitter alignment. The transmitted r
beam shall be parallel to the receiver line of sight within 0.25 mil.
The receiver line of sight shall be defined as the center of the 1 - mil
reticle circle.
8
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