Fluke 5500A, Service Manual

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5500A
Service Manual
6-20
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.
Table 6-17. Edge and Wave Generator HP3458A Settings
HP 3458A Settings
Input Frequency NPLC DELAY (topline) DELAY (baseline)
1 kHz .01 .0002 s .0007 s
10 kHz .001 .00002 s .00007 s
5500A CALIBRATOR
20V PK
MAX
HI
LO
TC
TRIG
OUT
1000V
RMS
MAX
20V
RMS
MAX
1V PK
MAX
20V PK
MAX
NORMAL AUX
SCOPE
V, ,
RTD
A, -SENSE,
AUX V
200V PK
MAX
HP 3458A 5500A-SC600
SC600 Cable
50
Ω
Feedthrough
Termination
BNC(F) to
Double Banana
Adapter
om055f.eps
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.