4 ESI - Telecom Synchronisation References
4.1 IMS-ESI (Extended Synchronization Interface)
The ESI (External Synchronization Input) card is capable of adding additional synchronization sources to an
IMS system. It accepts E1 or T1 signals, both as framed signals (2.048MBit/s/1.544MBit/s, supporting SS-
M/BOC) or clock inputs.
The clock inputs are configurable (1 kHz - 20 MHz). Furthermore a 1PPS input is provided as well.
An ESI card is, as the MRI card, dedicated to one specific clock module (depending on the slot it is in-
stalled in) and can be installed in both ESI as well as MRI slots.
Extended reference input signals
- 1PPS, BNC
- var. frequencies (1 kHz - 20 MHz) unframed, BNC
- var. frequencies (1 kHz - 20 MHz) unframed, RJ45
- BITS E1/T1 framed, RJ45
Hint:
If the specified frequency range is exceeded, an error message is displayed in the web interface and the entered
value is not accepted in this case.
IMS-ESI Setup Guide
Date: April 1, 2022
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