Wander Measurement - Viavi T-BERD MTS 5800 Getting Started Manual

Table 163 Internal modulation source specifications (Continued)
Item
Frequency range
Amplitude range at 2.5/2.7G
Modulation frequency accu-
racy
Error limits
The error limits conform to the requirements of ITU-T Recommendations O.172 (04/
2005) and O.173 (03/2003).
Synchronization
When generating wander, the Dual Module Carrier, Transport Module, and MSAM must
be synchronized to an external timing source. For more details, see "Reference clock"
on page 229.

Wander measurement

This section provides specifications when measuring wander on an optical circuit.
Reference clock
See to "Reference clock" on page 229
Table 164 Wander clock frequency specifications
Item
Permissible offset
Wander transfer bandwidth
TIE measurement
Per ITU-T Recommendation O.172 (04/2005) and O.173 (03/2003), TIE can be inter-
preted as the time difference between the signal you are measuring and the reference
clock. This measurement is used to calculate other results, such as MTIE and TDEV.
To ensure accuracy of the TIE measurement, warm-up the Dual Module Carrier,
Transport Module, and MSAM for at least 30 minutes and ensure there is no change in
ambient temperature exceeding 5
March 2018
Description
10 μHz to 10 Hz
0.1 UI to 100000UI
± 0.1%
for reference clock requirements.
Description
+ 20 ppm
approximately 1 Hz
°
Celsius.
T-BERD/MTS/SC Getting Started Guide
22046537, Rev. 016
Appendix A Specifications
Jitter and Wander specifications
Page 237