Ac Voltage Frequency Verification - Fluke 5520A Service Manual

5520A
Service Manual

6-50. AC Voltage Frequency Verification

This procedure uses the following equipment:
PM 6680A
Set the Calibrator Mainframe to SCOPE mode, with the Volt menu on the display. Press
verify ac voltage frequency.
1. Set the PM 6680's FUNCTION to measure frequency on channel A with auto trigger,
2. Using the BNC cable, connect the SCOPE connector on the Calibrator Mainframe to
3. Program the Calibrator Mainframe to output 2.1 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 @ 2.1 V p-p)
10 Hz
100 Hz
1 kHz
10 kHz
6-34
PM 6680 Frequency Counter with an ovenized timebase (Option PM 9690 or PM
9691)
BNC cable supplied with the SC600
Figure 6-6. AC Voltage Frequency Verification Setup
on the Calibrator Mainframe to activate the output. Then follow these steps to
measurement time set to 1 second or longer, 1M impedance, and filter off.
PM 6680 channel A.
6-23.
frequency listed in Table 6-23. Compare to the tolerance column of Table 6-23.
Table 6-23. AC Voltage Frequency Verification
PM 6680 Reading
(Frequency)
SC600 Cable
At 50 MHZ
0.000025 Hz
0.00025 Hz
0.0025 Hz
0.025 Hz
5520A-SC600
5520A CALIBRATOR
NORMAL AUX
SCOPE
V, , ,RTD A, -SENSE, AUX V
OUT
HI
1000V
20V
RMS 1V PK
RMS
MAX MAX MAX
LO
TRIG
20V
RMS
MAX
SHELLS
20A
GUARD
NOT
GROUNDED
TC
20V PK MAX 20V PK MAX
Tolerance
150V
PK
MAX
20V
PK
MAX
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