Section V. MODE 4 ALIGNMENT USING AN/TPM-25A

TM 11-6625-667-45/NAVAIR 16-30APM123-2/T033A1-3-367-22

Section V. MODE 4 ALIGNMENT USING AN/TPM-25A

5.1-18. General

procedure used conventional test equipment in

conjunction w i t h t h e R a d a r T e s t S e t

The test equipment listed in paragraph 5.1-19, or

AN/TPM-25A. The second procedure used the

approved equivalent, is required to perform

Radar Test Set AN/UPM-137A. Refer to figure

alignment procedures. Two procedures are

5.1-10 for adjustment control location.

provided for each alignment procedure. The first

5.1-19. Test Equipment Required for Alignment

Technical Manual

Test Equipment

Oscilloscope AN/USM-281A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TM 11-6625-1703-14

Radar Test Set AN/TPM-25A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TM 11-6625-2610-12

Mulitmeter TS 352B/U . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TM 11-6625-366-15

Mulitmeter ME 26B/U . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TM 11-6625-200-15

Test Set, Radar AN/UPM-137A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

NAVELEX 0969-158-1010

NAVAIR 16-30UPM137-6-1

AIR FORCE T.O.

33A1-3-426-21-1 AND

NAVELEX 096-158-1020

NAVAIR 16-30UPM137-6-2

AIR FORCE T.O.

33A1-3-426-21-2

5.1-20. Power Supply Adjustment

c. Connect dc test probe to test point A3TP1.

d. Apply power to equipment and permit

a.Connect equipment as shown in figure 3-1.

5-minute warmup.

b. Set the ME-26B/U RANGE control to 10V.

e. Adjust test set control A3R24 unti

c. Connect the ME-26B/U dc probe to test

AN/UPM-137A oscilloscope display indicates 5

point A3TP1.

0.l vdc.

d. Adjust control A3R24 until the ME-26B/U

f. Connect equipment as shown in figure 5.1-2.

indicates 5 0. 1 volts.

g. Set TS-352B/U FUNCTION switch to DC

e. Disconnect the ME-26B/U from the test set.

+ CURRENT and RANGE switch to 500MMA.

f. Connect the equipment as shown in figure

h. Adjust control A3R3 for meter indication o

5.1-2.

400 20 ma.

g. Set the TS-352B/U FUNCTION switch to

DC + CURRENT and range switch to 500MA.

5.1-22. Mode 4 Receiver Sensitivity and Reply

h. Adjust control A3R3 for a multimeter in

Video Adjustments Using AN/TPM-25A

dication of 400 20 milliamperes.

a. Set and adjust the AN/TPM-25A control:

as follows:

5.l-21. Power Supply Adjustment Using

AN/UPM-137A

REPLIES panel

MODULATION SEL: M4-3P

a. Connect equipment as shown in figure 3-1.1.

REPLY WIDTH: 0.45

b. Set and adjust AN/UPM-137A oscillo-

SUB PULSE SEL: OFF

scope controls as follows:

RANGE DELAY SEL (USEC) :0001

MEASUREMENT PANEL:

Control

Position

Horizontal SYNC

EXT DC

PRF RANGE: X100

1O SEC

HORIZONTAL TIME/DIV

FUNCTION SEL: PRF CHAL

DISPLAY-CHAN A/ALT CHAN B

CHAN A

DEMOD VID LEVEL: Mid position

VERTICAL CHAN A-75 IN/OUT

OUT

SIF CHAL VID panel

VERTICAL CHAN A-AC/DC

SIF MODE SEL: OFF

VERTICAL CHAN A-VOLT/DIV

20V/5BV: 5V

5.1-31

Change 5