HP 37717C Calibration Manual page 64

General Information
Specifications
pk-pk jitter amplitudes and modulating frequencies in accordance with ITU-T Rec.
G.823 Table 2, covering low and high Q systems.
The masks can be used to measure tolerance to jitter amplitude at spot jitter
frequencies or can be swept in 20% frequency increments.
When generating an SDH signal the masks available are those specified in ITU-T
Rec. G.958. A choice of type A or B masks is available at STM-1 and STM-4.
Automatic jitter tolerance test: The mask is swept in 20% frequency increments
and at each frequency the jitter amplitude is increased until errors (of any type) are
detected.
JITTER and WANDER GENERATION (Options A3K [A3Q]) and
EXTENDED JITTER GENERATION (Options 140 [141]):
A3K [A3Q] Adds Jitter generation at all standard PDH rates with the exception of
704 kb/s. Adds Wander generation at 2.048 Mb/s. If Option US1 or A1T (SDH) is
fitted adds Jitter and Wander generation at STM-1 and STM-4.
140 [141] Adds Jitter generation at all standard PDH rates with the exception of 704
kb/s. If Option US1, A3R or A1T (SDH) is fitted adds Jitter generation at STM-1
and STM-4.
Jitter Generation:
Data rates: 2.048 Mb/s, 8.448 Mb/s, 34.368 Mb/s, 139.264 Mb/s, 155.52 Mb/s
(STM-1),622.08 Mb/s (STM-4).
At STM-1 and STM-4 a jittered 139.264 Mb/s clock is used to jitter the SDH
clock.The UI transfer function is 1:1 at STM-1 and 1:4 at STM-4.
Jitter modulation
Frequency: 0.1 Hz to 5 MHz
Frequency accuracy: 1% >3Hz, 3% <3Hz
Frequency resolution: 1Hz (Ranges 1 & 10), 0.1Hz (ranges 50, 80 & 200)
The actual corner frequencies of the jitter generator will be beyond those in the ITU-
T mask.
2.048 Mb/s: Corner frequency 13 kHz, Cut-off frequency 102 kHz
8.448 Mb/s: Corner frequency 50 kHz, Cut-off frequency 430 kHz
34.368 Mb/s: Corner frequency 100 kHz, Cut-off frequency 840 kHz
139.264 Mb/s: Corner frequency 5 kHz, Cut-off frequency 4 MHz
155.52 Mb/s: Corner frequency 5 kHz, Cut-off frequency 4 MHz
622.08 Mb/s: Corner frequency 5 kHz, Cut-off frequency 4 MHz
Amplitude: To ITU-T O.171
Amplitude ranges: 0.00 to 1.00 UI - Range 1
0.0 to 10.0 UI - Range 10
0.0 to 50.0 UI - Range 50
0.0 to 80.0 UI - Range 80
0.0 to 200.0 UI - Range 200
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