TB 9-6625-154-40
Table 25. Edge 70 ps Edge Speed.
Measured
Calculated
TI level
Cal Point
Edge
Edge Time
Adjustment Value
(MHz)
(V p-p)
(ps)
(ps)
Target 1
1
25 m
Rising
1
Target 2
40 m
Rising
1
70 m
Rising
Target 3
1
Target 4
75 m
Rising
1
Target 5
120 m
Rising
1
Target 6
220 m
Rising
1
Target 7
250 m
Rising
1
Target 8
400 m
Rising
1
Target 9
700 m
Rising
1
Target 10
750 m
Rising
Target 111
1
1.2000
Rising
1
Target 12
2.2000
Rising
Insert a 20 dB attenuator between TI and storage oscilloscope.
1
(14) Set TI output to off, disconnect setup and repeat paragraph 11 a above.
12. Edge Rise/Fall Time Accuracy (Model 9550 Only)
a. Performance Check
(1) Connect TI output to storage oscilloscope input.
(2) Connect TI CH5 output to storage oscilloscope trigger input.
(3) Set storage oscilloscope to measure rise time with full bandwidth and averaging
to 256 averages.
(4) Set TI output as listed in (a) through (l) below:
(a)
Softkey, / 1.0 (select 1.0).
(b)
Softkey, CHANNEL SELECT.
Softkey, LOAD 50 Ω.
(c)
(d)
Softkey, SIGNAL CH 1.
(e)
Softkey, EXIT.
(f)
(Edge).
(g)
Softkey,
FAST.
(h)
Softkey,
25 ps.
(i)
(if necessary) to select FREQUENCY.
(j)
Keypad Entry, 1.
(k)
Softkey, MHz.
(l)
OUTPUT, ON.
(5) Set TI CH 5 (Trigger channel) output as listed in (a) through (g) below:
(a)
Softkey, CHANNEL SELECT.
(b)
Softkey, TRIGGER CHANNEL.
(c)
Softkey, TRIGGER CHANNEL 5.
(d)
Softkey, CABLE SELECT.
(e)
Softkey, CABLE CH 5.
(f)
Softkey, EXIT.
Softkey, EXIT.
(g)