TM 11-5820-489-10
TO 31R4-2GRA6-31
2-5. INITIAL ADJUSTMENTS, DAILY CHECKS AND SELF-TEST
NOTE
Unless you are otherwise notified, the switches on the
Remote and Local Control Units MUST be kept in the TEL
and TEL ONLY positions. Besides keeping the Telephone
lines continuously open, this prevents accidental
operation of the radio set from the Remote Control area.
a. Check of Telephone Circuit
Both operators (Local and Remote)
q
must agree on time checks.
To check ringing operation
q
from either unit, crank (turn)
front panel) clockwise. At
other Control Unit bell should
ring or call light should light
depending on switch setting.
Be careful! When either unit is in
use, the existing voltage at L1 and
L2 may be as high as 90 volts. Use
extreme caution.
With TEL and TEL ONLY settings,
q
check two-way telephone communication
using push-to-talk swith on handset.
THIS IS STANDBY POSITION.