TB 9-6625-2197-50
(24) 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
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 oscilloscope ERASE pushbutton and then press Autostore pushbutton to
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).
(31) Set control box RPT switch and PWR switch to OFF.
(32) Connect equipment as shown in figure 5, CONNECTION B.
(33) Repeat (2) and (3) above to select MODE 3 operation.
NOTE
Step (34) below consists of both SUM and DIFF pulses.
(34) Measure second pulse width (DIFF). If second pulse width is not between 0.7
and 0.9 s, perform b (2) below.
(35) Measure pulse spacing between the first and second pulse (fig. 6, inset F). Pulse
spacing will be between 1.8 and 2.2 s.
(36) Repeat (3) above to select MODE C operation.
(37) Press oscilloscope ERASE pushbutton and then press Autostore pushbutton to
(38) Set control box RPT switch and PWR switch to OFF.
(39) Connect equipment as shown in figure 5, CONNECTION A.
16
