Sectionalization Tests Using AN/UPM-98.

d. Sectionalization Tests Using AN/UPM-98.

Control settings

Normal

Equipment

Paragraph

indication

reference

under test

Test equipment

Step

Procedure

ME-26B/U

MODE 1

a. Connect the equipment as illustrated in figure a. None.

3-6c

FUNCTION: (+)

FUNCTION SYSTEM

3-1, except for dc probe.

RANGE 30V

ISLS: OFF

b. Set the ME-26B/U FUNCTION switch at (+ ) b. +28 vdc 3.

28 VDC-115 VAC

and turn on the test set. Allow 2 minutes-

OFF OFF

warmup time. Connect the dc test probe to

test point A13TP4.

c. Deleted.

c. Deleted.

d. Connect the ME-26B/U dc test probe to test d. +12 vdc 1.

point A13TP3. Observe the meter indica-

tion.

. . . . . . . . . . . . . . . . . . . . . Connect the dc test probe to teat point A13TP1 -12 vdc 1.

ME-26R/U

3-6c.

and observe the meter indication.

FUNCTION: (-)

. . . . . . . . . . . . . . . . . . . . . Connect the dc teat probe to teat point A14TP3 +150 vdc + 5.

ME-26B/U

3-6c.

and observe the meter indication.

FUNCTION: (+)

RANGE 300V

Turn off the transponder test set and connect a. None.

Same as step 1 . . . . . . . . . . a.

AN/USM-2O7

the equipment as shown in figure 3-2.

DIRECT/HETRODYNE

Switch:

Turn on the AN/USM-207 and CM- b. None.

HETRODYNE

77A/USM. Permit a 1-hour warmup period.

VOLTAGE switch:

Turn on the transponder test set and permit a c. None.

10V

2-minute Warm-up period. Connect A4TP5

FREQ TUNING-MC:

to ground.

150

Press and turn the transponder test set d. None.

FUNCTION: FREQ

PRESS-TO-TEST switch at LOCK.

SENSITIVITY:

PLUG IN

CM-77A/USM

POWER: ON

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . a.

Position the CM-77A/USM FREQUENCY a. None.

MEGACYCLES control near 206 and adjust

the control until the scope on the CM-77A

indicates a zero beat.

b. Note the frequency readout on AN/USM-207. b. 1,030 mc

3-6d.

206 kc.

Add 150 to this readout and multiply the re-

Sults by 5.

Same as step 1 . . . . . . . . . .

TS-779A/U

CAUTION

The Bolo Bias Current switch must be in

BOLO BIAS

the OFF position before connecting the

CURRENT OFF

MX-2144A to the TS-779A/U.

BOLO RES: 200

BOLO TEMP

a. Connect the MX-2144/U to the TS-779A/U a. None.

COEF: NEG

input.

b. Adjust the TS-799A/U as follows:

b. None.