Fluke 5520A - Page 177

SC600 Option
Verification
6
6-37
• 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.
BNC(F) to
3.5 mm (m)
Adapter
3 dB Attenaator
3.5 mm (m/f)
Tek 11801
With SD26 Sampling Head
5520A-SC600
SC600
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
yg058f.eps
Figure 6-7. 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
6-26. 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 6-26.
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
A)
2
- (SD-22/26 rise time)
2
).