Fast Transitions - HP 8112A Operating, Programming And Servicing Manual

Fast transitions

•
Verify that for the following HP 81 12A settings, the sampling scope
display indicates, the transition times are within the specifi e d
limits.
•
Record your results on a copy of the Test Record, specified limits
are given here and on the Test Record.
*
Under programming to 5.5 ns is permissible to meet this
Note
specification.
Slow transitions
•
Set up the HP 81 12A as follows:
Input Mode
Control Mode
PER
DEL
DTY
Transition
HIL
LOL
•
For the HP 81 12A to the settings in the table below, measure the
displayed leading edges
•
Verify that the transition times do not exceed the specifi e d limits.
•
Record your results on a copy of the Test Record, specified limits
are given here and on the Test Record.
The oscilloscope response is
Note
ms
the
provide faster response.
HP 8 1 12A
setting
Transition PER LEE
100 4.5
Fixed ns ns
*
100 6.5
Linear ns ns
NORM
Off
2 µs
65 ns
50%
Linear
+5.00 v
0.00 v
( )
LEE
very
range. The HP 54503A or the HP 54100D oscilloscopes will
HP 81 12A
PER LEE TRE
2
500 500
µs
ns
500 100 100
µs
µs
2 500 500
ms
µs
5 999 999
µs
ms
5 1 1
ms ms ms
50 ms 10
10 ms 9.5
ms
Oscilloscope
TRE Low Limit High Limit
4.5 5.0
ns - ns (typical)
6.5 8.825
ns - ns
(
and trailing edges TRE
slow for measurements with PER in
Oscilloscope
Low Limit High Limit
473
527
ns ns ns
95 105
µs µs µs
475
525
µs µs
µs
949 1.049
µs µs ms
0.95 1 .05
ms ms
10.5
ms ms
Testing Performance 8-15
)
.