Ascom – ATL Telecom AM2048 User Manual

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USER GUIDE

AM768A/AM2048A

Issue 8

4.9.1.2 Optical Transmission
The system operates from 0dB to 25dB of optical attenuation.
For single-mode (9/125) fibre with an attenuation of 0.35dB/km this equates to a transmission
distance up to 70km.
For multi-mode (50/125 or 62.5/125) fibre with an attenuation of 0.6dB/km this equates to a
transmission distance up to 41km.

Attention!

Care must be taken to ensure that the fibre connectors are clean.

4.9.2 End to End Delay
The transit delay from one end of the system to the other is < 700uS.

4.9.3 Jitter
For G.703 interfaces, the jitter meets the requirements of TBR12 and TBR13.

Measurement Filter Bandwidth

Output Jitter

Lower Cut Off (High Pass)

Upper Cut Off (Low Pass)

UI Peak to Peak (maximum)

40Hz 100kHz

0.11

These measurements are performed in the presence of the maximum tolerable input jitter.