Edge Frequency Verification - Fluke 5520A Service Manual

Calibrator
HP 3458A
Mainframe Edge
Range
Output
100 mV, 1 kHz 100 mV dc
1.00V, 1 kHz 1 V dc
5 mV, 10 kHz 100 mV dc
10 mV, 10 kHz 100 mV dc
25 mV, 10 kHz 100 mV dc
50 mV, 10 kHz 100 mV dc
100 mV, 10 kHz 1 V dc
500 mV, 10 kHz 1 V dc
1.00 V, 10 kHz 1 V dc
2.5 V, 10 kHz 10 V dc

6-120. Edge Frequency Verification

This procedure uses the following equipment:
PM 6680 Frequency Counter with an ovenized timebase (Option PM 9690 or PM
9691)
BNC cable supplied with the SC300
Refer to Figure 6-21 for proper setup connections. Set the Calibrator Mainframe to
SCOPE mode, with the Edge menu on the display. Press
Mainframe to activate the output. Then follow these steps to verify Edge frequency:
1. Set the PM 6680's FUNCTION to measure frequency on channel A with auto
trigger, measurement time set to 1 second or longer, 50
2. Using the BNC cable, connect the SCOPE connector on the Calibrator Mainframe to
PM 6680 channel A.
3. Program the Calibrator Mainframe to output 2.5 V at each frequency listed in Table
6-49.
4. Allow the PM 6680 reading to stabilize, then record the PM 6680 reading for each
frequency listed in Table 6-49. Compare to the tolerance column of Table 6-49.
Calibrator Mainframe
Frequency
(Output @ 2.5 V p-p)
1 kHz
10 kHz
100 kHz
1 MHz
Table 6-48. Edge Amplification Verification
Topline Baseline
Reading Reading
Table 6-49. Edge Frequency Verification
PM 6680 Reading
(Frequency)
Peak-to-
Peak-to-
Peak x
Peak
Correction
on the Calibrator
impedance, and filter off.
Tolerance
0.025 Hz
0.25 Hz
2.50 Hz
25.0 Hz
SC300 Option 6
Verification
Tolerance
( V)
0.0022
0.0202
0.0003
0.0004
0.0007
0.0012
0.0022
0.0102
0.0202
0.0502
6-91