TB 9-6625-2197-40
(12) Connect equipment as shown in figure 5, CONNECTION B.
(13) Repeat (2) and (3) above to select MODE 1 operation.
NOTE
Step (14) below consists of both SUM and DIFF pulses.
(14) Measure DIFF pulse width (second pulse on storage oscilloscope) (figure 6, inset
B). If pulse width of second pulse is not between 0.7 and 0.9 s, perform b (2) below.
(15) Measure pulse spacing of SUM and DIFF pulses. The pulse spacing will be
between 1.8 and 2.2 s of the first (SUM) and second (DIFF) pulse.
(16) Repeat (3) above to select MODE 2 operation.
(17) Push RUN and ERASE pushbuttons on radar test set oscilloscope.
(18) Press Autostore pushbutton to STORE. One pulse should be stored on screen.
(19) Set control box RPT switch and PWR switch to OFF.
(20) Connect equipment as shown in figure 5, CONNECTION A.
(21) Repeat (2) and (3) above to select MODE 2 operation.
NOTE
Step (22) below consists of both SUM and DIFF pulses.
(22) Measure SUM and DIFF pulse widths (fig. 6, inset C). The first pulse must
have a pulse width between 0.7 and 0.9 s; if not, perform b (1) below. The second pulse
width will be between 0.7 and 0.9 s; if not, perform b (2) below.
(23) Measure the pulse spacing between the first and second pulse. Pulse spacing
will be between 1.8 and 2.2 s.
(24) Set radar test set oscilloscope TIME/DIV switch to 1 s and press ERASE pushbutton.
(25) Place leading edge of first pulse on second vertical graticule line with radar test
set oscilloscope controls.
(26) Measure MODE 2 (SUM) pulse spacing (fig. 6, inset D). Pulse spacing will be
between 4.8 and 5.2 s.
(27) Repeat (3) above to select MODE 3 operation.
(28) Press radar test set oscilloscope ERASE pushbutton and then press Autostore
pushbutton to STORE to establish a new autostore waveform while placing leading edge of
first pulse on second vertical graticule line.
(29) Measure MODE 3 (SUM) pulse width. Pulse width will be between 0.7 and 0.9
s; if not, perform b (1) below.
(30) Measure pulse spacing. MODE 3 (SUM) pulse spacing will be between 7.8 and
8.2 s (fig. 6, inset E).
12
