Fluke 5520A - Setup for SC600 Edge and Wave Gen Square Wave Measurements

5520A
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
HP 3458A 5520A-SC600
SC600 Cable
50 Ω Feedthrough
Termination
BNC(F) to
Double Banana
Adapter
HI
LO
TRIG
GUARD
TC
20A
1000V
RMS
MAX
20V
RMS
MAX
20V
PK
MAX
1V PK
MAX
SHELLS
NOT
GROUNDED
NORMAL AUX
SCOPE
OUT
V, , ,
RTD
A, -SENSE,
AUX V
150V
PK
MAX
20V
RMS
MAX
20V PK MAX
20V PK MAX
5520A
CALIBRATOR
yg055f.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.