Fluke 5520A Service Manual page 177

3 dB attenuator, 3.5 mm (m/f)
BNC(f) to 3.5 mm(m) adapter (2)
BNC cable supplied with the SC600
second BNC cable
Connect the BNC cable supplied with the SC600 to the Calibrator Mainframe's SCOPE
connector. Connect the other end of the BNC cable to one BNC(f) to 3.5 mm(m) adapter
then to the DSO's sampling head through the 3 dB attenuator.
Using the second BNC(f) to 3.5 mm(m) adapter and BNC cable, connect the Calibrator
Mainframe's TRIG OUT connector to the 11801's Trigger Input. Refer to Figure 6-7.
Tek 11801
With SD26 Sampling Head
3 dB Attenaator
3.5 mm (m/f)
BNC(F) to
3.5 mm (m)
Adapter
Figure 6-7. Edge Rise Time Verification Setup
The Calibrator Mainframe should be in SCOPE mode, with the Edge menu on the
display. Press 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)
Horizontal scale
Measurement Function
1. Program the Calibrator Mainframe to output the voltage and frequency listed in Table
6-26. Press
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 6-26.
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
2
A) - (SD-22/26 rise time)
SC600
Cable
40 ns
500 ps/div
Rise Time
on the Calibrator Mainframe to activate the output.
2
).
SC600 Option
Verification
5520A-SC600
5520A CALIBRATOR
NORMAL AUX SCOPE
V, , ,RTD A, -SENSE, AUX V
OUT
HI
1000V 20V
RMS 1V PK
RMS
MAX MAX
MAX
150V
LO
PK
MAX
TRIG
20V
RMS
MAX
20V
PK
SHELLS
20A
GUARD
NOT MAX
GROUNDED
20V PK MAX TC 20V PK MAX
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