TB 9-6625-2337-24
(13) Set oscilloscope to measure the functions listed in table 8 with the oscilloscope
trigger on channel 1.
Table 8. Variable Pulse 1 Characteristics
TI
Oscilloscope
Measurement
Test description
type
Minimum
Maximum
TTL 10 s Pulse Width
9.95 s
10.05 s
Channel 1
Width
TTL 10 s Pulse Width
Channel 1 Top
2.5 V
5.5 V
(14) Verify that the pulse displayed on channel 2 is approximately coincident with
the pulse on channel 1.
(15) Connect the probe tip to pin 12 of the UUT connector.
(16) Press TI keys as listed in (a) through (e) below.
Use the arrow keys to highlight VP1, ENTR (OFF).
(a)
Use the arrow keys to highlight VP2, ENTR (ON).
(b)
Use the arrow keys to highlight VP2 DLY:.
(c)
100, ENTR.
(d)
Use the arrow keys to highlight VP1/VP2:, ENTR (YES).
(e)
(17) Verify that the pulse displayed on channel 2 is approximately coincident with
the pulse on channel 1.
(18) Verify that the pulse width of the signal on channel 1 is within limits listed in
first row of table 9.
(19) Press TI keys as listed in (a) and (b) below:
(a) Use the arrow keys to highlight VP2 PW:.
(b) .25, ENTR.
(20) Verify that the pulse width of the signal on channel 2 is within limits listed in
second row of table 9.
(21) Repeat technique of (19) and (20) above for remaining row in table 9.
Table 9. Variable Pulse 2 Characteristic
TI
Oscilloscope
VP2 pulse
Measurement
Test description
width
type
Minimum
Maximum
VP1/2 1 s Pulse Width
0.95 s
1.05 s
----------
Channel 1
Width
0.25 s
VP1/2 .25 s Pulse Width
0.2 s
0.3 s
Channel 2
Width
10 s
VP1/2 10 s Pulse Width
9.95 s
10.05 s
Channel 2
Width
(22) Disconnect X1 probe from UUT and oscilloscope channel 1 input. Connect TI
TRIGGERS 0 OUT to the oscilloscope channel 1 input using a 75
feedthrough
termination.
(23) Press TI keys as listed in (a) through (i) below:
17