Edge Duty Cycle Verification; Edge Rise Time Verification - Fluke 5500A Service Manual

5500A
Service Manual
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Refer to Figure 6-6 for proper setup connections. Set the Calibrator Mainframe to
SCOPE mode, with the Edge menu on the display. Press O on the Calibrator
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
2. Using the BNC cable, connect the SCOPE connector on the Calibrator Mainframe to
3. Program the Calibrator Mainframe to output 2.5 V at each frequency listed in Table
4. Allow the PM 6680 reading to stabilize, then record the PM 6680 reading for each
Calibrator Mainframe
Frequency
(output @ 2.5 V p-p)
1 kHz
10 kHz
100 kHz
1 MHz
10 MHz

6-53. Edge Duty Cycle Verification

This procedure uses the following equipment:
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•
Refer to Figure 6-6 for proper setup connections. Set the Calibrator Mainframe to
SCOPE mode, with the Edge menu on the display. Press O on the Calibrator
Mainframe to activate the output. Then follow these steps to verify Edge duty cycle.
1. Set the PM 6680's FUNCTION to measure duty cycle on channel A with auto
2. Using the BNC cable, connect the SCOPE connector on the Calibrator Mainframe to
3. Program the Calibrator Mainframe to output 2.5 V at 1 MHz.
4. Allow the PM 6680 reading to stabilize. Compare the duty cycle reading to 50% ±

6-54. Edge Rise Time Verification

This procedure tests the edge function's rise time. Aberrations are also checked with the
Tektronix 11801 oscilloscope and SD-22/26 sampling head.
The following equipment is used to verify the edge rise time.
6-36
BNC cable supplied with the SC600
trigger, measurement time set to 1 second or longer, 50Ω impedance, and filter off.
PM 6680 channel A.
6-25.
frequency listed in Table 6-25. Compare to the tolerance column of Table 6-25.
Table 6-25. Edge Frequency Verification
PM 6680 Reading (Frequency)
PM 6680 Frequency Counter
BNC cable supplied with the SC600
trigger, measurement time set to 1 second or longer, 50 Ω impedance, and filter off.
PM 6680 channel A.
5%.
Tolerance
0.0025 Hz
0.025 Hz
0.25 Hz
2.5 Hz
25 Hz