TB 9-6625-1176-24
8. Pulse Repetition Rate
a. Performance Check
(1) Position controls as listed in (a) through (n) below:
MODE NORM pushbutton pressed.
(a)
PERIOD .1 -1 pushbutton pressed.
(b)
PERIOD VERNIER dial to 10.
(c)
PULSE POSITION l0n-.1 pushbutton pressed.
(d)
PULSE POSITION VERNIER dial to 1.
(e)
DUTY CYCLE % pushbutton released (out).
(f)
WIDTH .1 -1 pushbutton pressed.
(g)
WIDTH VERNIER dial fully ccw.
(h)
AMPLITUDE 3-10 pushbutton pressed.
(i)
AMPLITUDE VERNIER dial to 3.
(j)
INT LOAD pushbutton released (out).
(k)
SLOPE switch to POS.
(l)
DELAY/ADVANCE/DOUBLE PULSE switch to DELAY.
(m)
POLARITY switch to POS.
(n)
(2) Connect TRIG OUTPUT to frequency counter A input, using 50
termination.
(3) Measure REPETITION RATE, using standard measurement technique.
If
frequency counter does not indicate between 890 and 1110 ns, perform b below.
(4) Repeat technique of (3) above for settings listed in table 4. If indications are not
within specified tolerance, perform b below.
Table 4. Repetition Rate
Test Instrument
Frequency counter indications
PERIOD
PERIOD VERNIER
pushbuttons
dial settings
Min
Max
10
8.900 s
11.100 s
1 - 10
89 s
111 s
10
10 - 0.1 m
890 s
0.1 m 1 m
10
1.100 ms
1 m 10 m
10
8.900 ms
11.1 ms
10 m - 0.1
10
89 ms
111 ms
10 m - 0.1
1
8.000 ms
12.000 ms
800 s
1 m 10 m
1
1.200 ms
80 s
120 s
0.1 m 1 m
1
8.000 s
12.000 s
1
10 - 0.1 m
1
1.200 s
800 ns
1 - 10
1
80 ns
120 ns
0.1 - 1
2
170 ns
230 ns
0.1 - 1
3
260 ns
340 ns
0.1 - 1
4
350 ns
450 ns
0.1 - 1
5
440 ns
560 ns
0.1 - 1
6
530 ns
670 ns
0.1 - 1
7
620 ns
780 ns
0.1 - 1
8
710 ns
890 ns
0.1 - 1
9
1.000 s
800 ns
0.1 - 1
