Sdh Binary Interface (Option 0Yh) - HP 37717C Calibration Manual

General Information
Specifications
D6, D7, D8, D9, D10, D11, D12, K1,
K2, S1, M1, E2, J1, C2, G1, F2, H4,
F3, K3 & N1. A BER measurement can
be performed on any of these bytes
9
using the 2 -1 PRBS provided by the
transmit overhead BER test function.
Error count, error ratio, error free
seconds, percentage error free seconds
and pattern loss seconds are calculated
SDH Binary Interface
(Option 0YH)
Rate: 155.52 MHz
Clock & Data Polarity: Positive or
inverted
Connectors: SMA
Data format: NRZ
Data level: ECL
Data termination: 50
Transmit:
Clock duty cycle: 50% (nominal)
Clock to data timing: Clock edge
nominally 800 ps before centre of data
output.
Receive:
Clock duty cycle: 50% 10%
Input return loss: >15dB up to half
rate Data setup and hold time: 600 ps
minimum
JITTER GENERATION:
Option UHK
Adds Jitter generation
at all standard PDH rates with the
exception of 704 kb/s. If Option US1 or
A1T is fitted adds Jitter generation at
STM-1 and STM-4.
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
1-42
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: 2 Hz to 4 MHz
Frequency accuracy: 1%
Frequency resolution:
2 to 499 Hz in 1 Hz steps.
500 Hz to 4.99 kHz in 10 Hz steps
5 kHz to 49.9 kHz in 100 Hz steps
50 kHz to 499 kHz in 1 kHz steps
500 kHz to 990 kHz in 10 kHz steps
1 MHz to 4 MHz in 100 kHz steps.
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,
to -2V
Cut-off frequency 422 kHz
34.368 Mb/s: Corner frequency 210
kHz, Cut-off frequency 840 kHz
139.264 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
Range accuracy: Range 1 - 0.01 UI
Range 10 - 0.1 UI
Intrinsic jitter:
2.048 Mb/s - 0.02 UI
8.448 Mb/s - 0.02 UI
34.368 Mb/s - 0.03 UI
139.264 Mb/s - >10 kHz - 0.02 UI 5
kHz to 10 kHz - 0.05 UI 200 Hz to 5
kHz - 0.10 UI
Values are pk-pk jitter measured with
HP1 filter present.
Amplitude accuracy: 5% range
accuracy intrinsic jitter.
Fixed jitter tolerance masks: 4 pre-
programmed jitter tolerance masks with