Figure 3. Comparison pulse position.

TB-9-6625-2163-35 Transponder Test Set TS-1809 (AN/APM-123(V)1) Manual
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TB 9-6625-2163-35

I/P

A11TP1

A11TP2

Figure 3. Comparison pulse position.

(8) Repeat technique of (7) above for each of the following pulses: A1, C2, A2, C4,

A4, B1, D1, B2, D2, B4, D4, F2, and I/P (fig. 3). If pulse positions are not as specified,

perform b(2) below for appropriate pulses.

(9) Disconnect oscilloscope probes from TI.

b. Adjustments

(1) Adjust oscilloscope HORIZONTAL POSITION control to reference C1 pulse on

CH 1 and CH 2 to center graticule line on display. Adjust TI control A7R1 (fig. 2) to center

C1 (fig. 3) pulse on CH 2 with respect to C1 (fig. 3) pulse on CH 1 (R).

(2) Adjust HORIZONTAL POSITION control to reference respective pulse on CH

1 and CH 2 to center graticule line on display. Adjust controls as indicated in (a) through

(m) below (fig. 3) to center pulses on CH 2 within respective pulse on CH 1 (fig. 3):

(a) Pulse A1

A7R2 (R)

(b) Pulse C2

A7R3 (R)

A7R4 (R)

(d) Pulse C4

A7R5 (R)

(e) Pulse A4

A7R6 (R)

(f) Pulse B1

A7R7 (R)

(g) Pulse D1

A7R8 (R)

(h) Pulse B2

A7R9 (R)

(i) Pulse D2

A7R10 (R)

(j) Pulse B4

A7R11 (R)

(k) Pulse D4

A7R12 (R)

(l) Pulse F2

A7R13 (R)

(m) Pulse I/P

A7R14 (R)