12 Attachment: Technical Information
ESI - Telecom Synchronisation References
Enhanced Synchronisation Inputs
Reference Inputs:
E1 / T1 framed/unframed, variable frequencies (1kHz-10MHz)
Power Requirements: 5 V, +-5%, 250 mA
Status Indicators
LED St:
ESI status
LED In:
Status of the backplane’s reference signals
LED A + LED B:
Status of the input signals at the board
Initialisation:
LED St blue until USB is configured
LED In - LED B off until USB is configured
USB is configured:
LED St blue
LED In - LED B
0,5 sec. red -> 0,5 sec. yellow -> 0,5 sec. green -> 0,5 sec. off
Normal Operation:
LED St + LED In green
LED A green: if PPS and 10MHz
flashing green, if !PPS and 10 MHz
flashing yellow, if PPS and !10 MHz
LED B green: if Clock and Framed
flashing green, if Clock and !Framed
flashing yellow, if !Clock and Framed
off, if !Clock and !Framed
Figure right:
ESI - telecom signal inputs
via BNC female and RJ45 connectors
LANTIME IMS-M500
Date: 9th June 2016
31
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