
3-6
Performance Tests
PDH Internal Transmitter Clocks (Options UKK, [USB], UKJ, [USA])
PDH Internal Transmitter Clocks (Options UKK, [USB],
UKJ, [USA])
Specifications
Description
This test verifies that the PDH transmit data rates are within limits. These limits
assume the instrument is within the annual calibration cycle. The Frequency Offset
capability (deviation from Standard Bit Rate) is also tested here.
The test uses a Frequency Counter connected to the PDH Signal Out port to measure
the data rate on an "all ones" pattern. This gives an indirect measure of the internal
transmitter clock frequency as the data is clocked by the internal clock oscillator.
Because the Frequency Counter triggers from the positive pulses only, the frequency
count will be half the selected data rate.
Equipment Required
Bit Rate
Option
Specification
139.264 MHz
UKJ, [USA], UKK, [USB]
139.264 MHz
±
626.28 Hz
34.368 MHz
UKJ, [USA], UKK, [USB]
34.368 MHz
±
154.66 Hz
8.448 MHz
UKJ, [USA], UKK, [USB]
8.448 MHz
±
38.0 Hz
2.048 MHz
UKJ, [USA], UKK, [USB]
2.048 MHz
±
9.22 Hz
704 kHz
UKK, [USB]
704 kHz
±
3.17 Hz
Frequency Counter
: HP 5335A Option 010
75
Ω
Termination
: HP 15522-80010
T Connector
: HP 1250-0781
Summary of Contents for 37717C
Page 2: ...HP 37717C Communications Performance Analyzer Calibration Manual ...
Page 5: ...2 ...
Page 21: ...xviii Contents ...
Page 109: ...2 20 Installation Additional Precautions for Service Engineers ...
Page 312: ...3 203 Performance Tests Trigger Output Option UKZ Figure 3 57 Monitor Input Test Setup ...
Page 375: ...3 266 Performance Tests Performance Test Record ...
Page 379: ...4 4 Installation Current Previous Terminology ...
Page 392: ...B 9 Appendix B Fitting Calibrating Testing New Modules Typical Jitter Transmit Spectrum ...
Page 393: ...B 10 Appendix B Fitting Calibrating Testing New Modules ...