TM 11-5805-424-15/NAVSHIPS 0967-220-9010/TO 31W2-2G-41
7-8. Alarm Tests
test MD-674(P)/G, and install the repaired plug-in module in its place.
a. Test Equipment and Material.
(2) Connect the equipment as shown in A and B of figure 7-3.
See Maintenance Allocation Chart Section III for test equipment.
(3) Strap, together, terminals TP4 and TP5 on PC assembly A1.
b. Test Connections and Conditions.
(4) Operate all POWER switches to the ON position.
(1) Remove the test MD-674(P)/G from its case, and install the repaired
MD-674(P)/G in its place, or remove the appropriate plug-in module from the
Equipment under test
BAUD RATE: As required.
a. Note indication on ME-30A/U
a. ME-30A/U should indicate between
+3 dbm and - 20 dbm.
b. Connect ME-26A/U between test
b. Front panel ALARM indicator lamp
point TP8 on control bracket and
should light approximately 2
INPUT SELECT: DATA.
ground and adjust front panel
seconds after ME-26A/U indicates
OUTPUT LEVEL ADJ control
slowly until ME-26A/U changes
from 13.5: volt indication to -15
BAUDS: As required
JACK SIGNAL SELECTOR:
c. Make a note of indication on ME-
c. ML-3A /U should indicate ap-
LOW LEVEL (MECH OFF).
Proximately 10 dbm less than
reading in a above.
d. Adjust front panel OUTPUT LEVEL
d. ME-30 A/U should indicate 5 dbm
ADJ control slowly until ALARM
( 1 dbm) less than indication in
indicator lamp is extinguished;
make note of indication on ME-
Left hand: -SPACE
Right hand: ALL.
INPUT FILTER: OUT
INPUT POLARITY: As