Setup For Sc600 Edge And Wave Gen Square Wave Measurements - Fluke 5520A Service Manual

5520A
Service Manual

6-32. Setup for SC600 Edge and Wave Gen Square Wave Measurements

The setup to measure the topline and baseline of Edge and Wave Generator signals
differs slightly from the Voltage Square Wave method described above. The HP 3458A is
triggered by a change in input level instead of an external trigger. The trigger level is set
to 1% of the DCV range, with ac coupling of the trigger signal. The delay after the trigger
event is also changed for the Edge and Wave Generator functions. See Table 6-17 and
Figure 6-3.
Input Frequency
1 kHz
10 kHz
HP 3458A
BNC(F) to
Double Banana
Adapter
Figure 6-3. Equipment Setup for SC600 Edge and Wave Gen Square Wave Measurements
For all measurements, the HP 3458A is in DCV, manual ranging, with level triggering
enabled. A convenient method to make these measurements from the HP 3458A's front
panel is to program these settings into several of the user defined keys on its front panel.
For example, to make topline measurements at 1 kHz, you would set the DMM to
"NPLC .01; LEVEL 1; DELAY .0002; TRIG LEVEL". To find the average of multiple
readings, you can program one of the keys to "MATH OFF; MATH STAT" and then use
the "RMATH MEAN" function to recall the average or mean value. Refer to Figure 6-3
for the proper connections.
6-20
Table 6-17. Edge and Wave Generator HP3458A Settings
NPLC
.01
.001
50 Feedthrough
Termination
HP 3458A Settings
DELAY (topline)
.0002 s
.00002 s
SC600 Cable
DELAY (baseline)
.0007 s
.00007 s
5520A-SC600
5520A CALIBRATOR
NORMAL AUX SCOPE
V, , ,RTD
A, -SENSE, AUX V
OUT
HI
1000V 20V
1V PK
RMS RMS
MAX
MAX MAX
150V
LO
PK
MAX
TRIG
20V
RMS
MAX
20V
PK
SHELLS
20A
GUARD
NOT MAX
GROUNDED
TC 20V PK MAX
20V PK MAX
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