TM 9-4935-481-14-1
C2
switch to F2 and adjust COMPARATOR THRESHOLD C control to +2.500 0.0050 Vdc. Return the switches to the initial
switch settings.
c. Place the test set where it will be most suitable for the checks or tests to be performed. Often the aisle table (refer to
TM-06895A-15 or TM-02819D-15) will facilitate ease of operation.
k. Connect a ground breaker (isolation plug) to the oscilloscope power cord.
2-7. Installation of DMS-G Test Kit.
NOTE
Next step is very important. All checks and tests are based on these initial switch and
Prepare the DMS-G test kit for operation using the following general procedures:
potentiometer settings.
a. Remove test kit from stowed position.
d. Set all switches to the initial switch setting as indicated by the reverse color markings on the front panel (see fig. 3-1).
Adjust all front panel potentiometers to the fully ccw positions. Set all dials to their minimum reading.
c. Place the test kit where it will be most suitable for the checks or tests to be performed. Often the aisle table (refer to
e. Remove power cable assembly 10219812 from the case cover and connect P1 to DMS-D connector J4 and P2 to a
TM-06895A-15) will facilitate ease of operation.
115.0 11.5 VAC, 57 to 420 Hz power outlet.
NOTE
NOTE
Next step is very important. All checks and tests are based on these initial switch and
See fig. 1-3 for cable interconnections.
potentiometer settings.
f. Remove one cable assembly P55427-001 from case cover and connect it between the counter-timer A INPUT and the
d. Set all switches to the initial switch setting as indicated by the reverse color markings on the front panel (see fig. 3-
DMS-D connector J14.
32)Adjust all front panel potentiometers to the fully ccw position. Set TC-21 dial to the 00 position.
g. Remove second cable assembly P55427-001 from case cover and connect it between the counter-timer B INPUT and
e. Remove the ground strap from the case cover and connect it between the DMS-D and DMS-G ground lugs.
the MDS-D connector J16.
f. Remove cable assembly 1W2 from the DMS-D case cover and connect it from DMS-D connector J7 to DMS-G
h. Remove cable assembly lW14 (DMM external probes) from case cover and carefully connect the coax connector to
connector J3.
DMS-D connector J17. (Note differences in coaxial connectors.)
g. Remove cable assembly 2W2 from the case cover and connect it from DMS-D connector J5 to DMS-G connector J4.
i. Set the counter-timer controls as indicated below. (Controls not indicated may be left in any position.)
h. Remove cable assembly 2W3 from the case cover and connect it from the DMS-D connector J6 to DMS-G connector
DISPLAY control
mid-range
J2.
A SENSITIVITY control
mid-range
B SENSITIVITY control
mid-range
STORAGE switch
OFF
2-8. Preparation for Limited Storage of Equipment.
CLOCK switch
INT
For limited storage of the DMS (one day to 2 weeks) observe the following procedures:
j. Set MAIN POWER and DMS switches to ON. Set SELECTOR A switch to F1 and adjust COMPARATOR
THRESHOLD B control to +2.500 0.0050 Vdc. Set SELECTOR A
a. Prior to storage, the DMS test units and equipment should be thoroughly cleaned. Particular attention should be
accorded the lens on the radiometer optical head.
2-2