TB 9-4920-456-24
(4) On radar test set, position oscilloscope as listed in (a) through (d) below:
(a) VERTICAL VOLTS/DIV (channel 1) set to 2.00 V.
(b) HORIZONTAL TIME/DIV set to 2 s.
(c) TRIGGER SOURCE set to 1.
(d) TRIGGER SLOPE set to positive.
(5) On radar test set, press pushbuttons as listed in (a) through (c) below:
(a) On radar test set, press pushbutton FUNC, ENTR. Wait a second and press
ENTR pushbutton and then press ENTR pushbutton again. Select menu CHALLENGES
(highlighted) and press pushbuttons as listed in 1 through 6 below:
M4: WORD A.
1
2
S1: ON.
S2: ON.
3
4
S3: ON.
5
S4: ON.
S5: ON.
6
(b) Select menu PRF/PRI (highlighted) and press pushbuttons as listed in 1
through 3 below:
PRF: 3700 ENTR (PPS).
1
2
0 TRIGGER: INTERNAL.
KIR TRIGGER: INT.
3
(c) Select MENU SELECTIONS (highlighted).
(6) Adjust frequency counter for a stable reading. Frequency counter will indicate
between 206 and 276 s.
NOTE
If frequency counter does not indicate any count or a stable
reading, adjust INPUT A and INPUT B TRIGGER LEVEL for
stable indication.
(7) Adjust oscilloscope controls to view three TI reply pulses on oscilloscope display.
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