3-129
Performance Tests
Transmitted Jitter Amplitude Accuracy (Option UHK)
7. Check the Jitter accuracy for each value in Table 3-5. In each case, set the HP
37717C Rate and Spectrum Analyzer Center Frequency to the value given in column
1 of the table (Set the HP 37717C PATTERN to ALL ONES and jitter
AMPLITUDE to minimum after each change of Bit Rate). Set the HP 37717C
Jitter Modulation Frequency and Amplitude to the values given in columns 2 and 3
of the table. Fine-tune the amplitude to obtain the lowest carrier level on the Spectrum
Analyzer display and check that the jitter amplitude displayed on the HP 37717C is
between the limits given in columns 4 and 5 of Table 3-5.
Figure 3-45 Bessel Null Example
Table 3-5 Range 1 Tx Jitter Amplitude Accuracy
Bit Rate/
Center Frequency
Modulation
Frequency
Jitter
Amplitude (UI)
Minimum
Jitter (UI)
Maximum
Jitter (UI)
2048kHz 2400Hz 0.77 0.69 0.83
8448kHz 10700Hz 0.77 0.69 0.83
34368kHz 4000Hz 0.77 0.69 0.83
139264kHz 4000Hz 0.77 0.68 0.84
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