Fluke 96000 Series - Frequency Accuracy (96040 A and 96270 A)

96000 Series
Service Manual
3-6
Frequency Accuracy (96040A and 96270A)
Equipment required for this test:
• Frequency Counter
• Spectrum Analyzer
• Frequency Standard
• 50 Ω Leveling Head (supplied with UUT)
To verify the accuracy of the output frequency developed by the UUT:
1. Warm up the UUT (continuous operation) for 24 hours, minimum.
2. Connect the 10 MHz output from the Frequency Standard to the EXT REF IN
on the Frequency Counter (rear panel) using a BNC male – male cable
assembly. Set the Frequency Counter for external time base reference.
3. Connect the UUT Leveling Head to the Channel A input of the frequency
counter. See Figure 3-2 for equipment connections.
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MHz
Frequency Counter
Front
Rear
10 MHz Output from
Frequency Standard
External
Ref Frequency
Input
Instrument
hpn228.eps
Figure 3-2. Equipment Connections - Frequency Accuracy Test