TB 9-6625-127-24
b. Adjustments. Complete all performance checks through paragraph 15 for as found
data, then perform paragraph 16.
9. Duty Cycle
a. Performance Check
(1) Set frequency counter for DUTY FA measurements.
(2) Set TI to first frequency and duty cycle setting listed in table 4. If frequency
counter does not indicate within limits specified in table 4, perform b below.
(3) Repeat technique of (2) above for remaining frequencies and duty cycles listed in
below.
Table 4. Duty cycle
Test instrument
Frequency counter indication
Limits
Frequency
Duty cycle
Min
Max
1
Hz
10%
9.5
10.5
1
Hz
50%
49.5
50.5
1
Hz
90%
89.5
90.5
1
kHz
10%
9.5
10.5
1
kHz
50%
49.5
50.5
1
kHz
90%
89.5
90.5
9.99 MHz
20%
17.0
23.0
9.99 MHz
50%
47.0
53.0
9.99 MHz
80%
77.0
83.0
b. Adjustments. Complete all performance checks through paragraph 15 for as found
data, then perform paragraph 16.
10. Pulse Width
a. Performance Check
(1) Set frequency counter for P WIDTH A measurements and set TI to PULSE.
(2) Set TI to first frequency and width setting listed in table 5. If frequency counter
does not indicate within limits specified in table 5, perform b below.
(3) Repeat technique of (2) above for remaining frequencies and duty cycles listed in
below.
Table 5. Pulse width
Test instrument
Frequency counter indication
Limits
Frequency
Width
Min
Max
1 MHz
100
ns
93
ns
107
ns
100
kHz
1 s
948
ns
1052
ns
1 kHz
100
s
95
s
105
s
10
Hz
1 ms
950
s
1050
s
1 Hz
500
ms
475
ms
525
ms