SC600 Option
Calibration and Verification of Square Wave Voltage Functions
6
6-19
Table 6-16. Voltage HP3458A Settings
HP 3458A Settings
Voltage
Input Frequency
NPLC DELAY (topline) DELAY (baseline)
100 Hz .1 .007 s .012 s
1 kHz .01 .0007 s .0012 s
5 kHz .002 .00014 .00024
10 kHz .001 .00007 .00012
For all measurements, the HP 3458A is in DCV, manual ranging, with external trigger
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; DELAY .0007; TRIG EXT”. 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.
Note
For this application, if making measurements of a signal > 1 kHz, the HP
3458A has been known to have .05% to .1% peaking in the 100 mV range.
For these signals, lock the HP 3458A to the 1 V range.
HP 3458A (Front) 5520A-SC600
SC600 Cable
HP 3458A (Rear)
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
ygo54f.eps
Figure 6-2. Equipment Setup for SC600 Voltage Square Wave Measurements
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