Fluke 5520A - Page 233

SC300 Option
Verification
6
6-93
BNC(F) to
3.5 mm (m)
Adapter
3 dB Attenaator
3.5 mm (m/f)
Tek 11801
With SD26 Sampling Head
5520A-SC300
SC300
Cable
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
yg124f.eps
Figure 6-22. Edge Rise Time Verification Setup
The Calibrator Mainframe should be in SCOPE mode, with the Edge menu on the
display. Press O on the Calibrator Mainframe to activate the output. Press the softkey
under TRIG to select the TRIG/1 External Trigger output. Program the Calibrator
Mainframe to output 250 mV @ 1 kHz. Set the DSO to these parameters:
Digital Storage Oscilloscope Setup
Main Time Base position (initial) 40 ns
Horizontal scale 500 ps/div
Measurement Function Rise Time
1. Program the Calibrator Mainframe to output the voltage and frequency listed in
Table 6-50. Press O on the Calibrator Mainframe to activate the output.
2. Change the vertical scale of the DSO to the value listed in the table. Adjust the main
time base position and vertical offset until the edge signal is centered on the display.
Record the rise time measurement in column A of Table 6-50. Refer to Figure 6-23.
3. Correct the rise time measurement by accounting for the SD-22/26 sampling head’s
rise time. The SD-22/26 rise time is specified as < 28 ps. Column B = sqrt((Column
A)
2
- (SD-22/26 rise time)
2
).
4. The edge rise time measured should be less than the time indicated in Table 6-50.