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Page Title:
Tuning (load matching) capability. |
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|  MIL-C-64025(AR)
.
The RCU shall flash the "BAT LOW"
3.6.4 -Low "battery voltage.
LED when the battery voltage is at or below the low voltage threshold.
The low voltage -threshold shall be 11.0 volts max. and 10.3 volts
minimum when tested per 4.5.2.24
transmitting current. With the battery voltage (Pl-
3.6.5 -RGU
RED with respect to P1-BLK) set to 13 + 0.5 volts and the RCU
into a 50 +5% ohm resistive load, the current
transmitting
flowing into PI-RED shall be 2.6 amperes maximum when tested per
4,5.2.25
I
With a battery voltage of 13 + 0.1
T r a n s m i t t i n g Power.
3.6.6
its, the RF-Power -into a 50 + 5% ohm resistive load at the ANTENNA,
while transmitting, shall be 10 watts minimum when tested per 4.5.2.26
3.6.7 Tuning (load matching) capability.
The RCU shall produce
10 watts minimum into the 50 ohm real component of each of the complex
loads listed in the table below with a battery voltage of 13 + 0.1
volts when tested per 4.5.2.27
LOAD)_IMPllDANCE
LOAD
A
50 - j169
B
50 + j152
c
83 + j88
D
316- j169
E
79 + j183
I
The RCU shall not transmit an
3.6.8 Transmitter cutoff voltage.
RF signal when the battery voltage is at or below the cutoff threshold
of 10 + 0.5 volts when tested per 4.5.2.28
Data stored in the RCU memory shall
3.6.9 Data retention time.
be retained for at least 5 minutes with the battery disconnected from
the unit when tested per 4.5.2.29
3.6.10 Initial Power app lication. When battery power is first
applied or until a valid STORE code has been established, the RCU
shall display INVALID with the STORE code select switch is off when
tested per 4.5.2.4
3.6.11 STORE. code entry mode. The RCU allows a five digit
----.-
--
STORE code to be entered via the front panel keyboard where STORE code
digits are chosen from the set of integers 1 thru 8 inclusive.
Turn the store code select switch on, turn the power switch on and
then turn the store code switch off. The RCU shall display five dashes
( -----) as the STORE CODE prompt. Key in the five digit STORE code.
The RCU shall display the "key-in" digits when tested per 4.5.2.5,
then turn the unit power switch off.
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