Sectionalization Tests Using AN/UPM-98.-CONT.

Normal

Control

Settings

Paragraph

Procedure

Test eguipment

test

reference

Step

c. Adjust the oscilloscope controls in order c. Delay between P1 and

P2 should be 2

to measure the spacing between the

sec 0.2. Delay

P1, P2, and P3 pulses.

between P1 and P2

should be sec

0.2.

d. Set the test set MODE switch at each of d. P1-P2 pulse spacing.

the following positions and measure

delays.

Mode (1) 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(1) 5 sec

0.2

(2) 8 sec

(2) 3/A . . . . . . . . . . . . . . . . . . . . . . . . . . . .

0.2.

(3) 21 sec

(3) C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

0.2.

(4) 6.5 sec

(4) TEST . . . . . . . . . . . . . . . . . . . . . . . . . .

0.2.

a. Connect the equipment as shown in a. None.

MODE: 2

AN/UPM-98

CODE (A, B, C, D):

CODE (A, B, C, D): 7777

figure 3-5. Connect oscilloscope

7777

FUNCTION: N

CHANNEL A to A8TP2.

PRESS TO TEST:

AMPLITUDE: 2

CAUTION

SUB PULSE SELECT OFF

Be sure that the TS-656/U Power

POWER: 115V

LEVEL: LO

Supply voltage adjustment se at 0

PULSE WIDTH: 0.45

output or damage to the diodes in

......................

WXTAL MARK & SYNC UNIT:

the MD-796 will result.

SYNC SELECT? -EXT.

SUP: Completely CCW

POWER ON

Trigger Delay 5-50

b. Connect the output of the AN/URM-64 b. None.

AN/URM-64

to the rf input of the MD-796 and the

POWER ON

output of the MD-796 to the probe

Signal Frequency: 1065 MC

input to the transponder test set.

Attenuator: Fully Clockwise

c. Be sure the voltage adjustment on the C. NOne.

AN/USM-281A

TS-656 is fully counterclockwise. Turn

Same as step 7

the POWER switch to ON and adjust

the voltage to 0.8 Be sure the

negative lead is connected to the center

conductor of cable.

d. Press and turn the PRESS TO TEST d. None.

TS-656

knob to the position. The accept

POWER OFF

light should be on. If it is not, adjust

Voltage: OFF

Function: DC Volts

the AN/URM-64 Frequency knob until

the transponder test set indcates

steady accept. Then adjust the