Mri - Standard Reference Input Signals - Meinberg IMS-M3000 Manual

12.7.12 MRI - Standard Reference Input Signals

If an application requires to use external synchronization sources instead of radio/GNSS signals, an MRI card
enables the installed clock module to synchronize to 1PPS, 10MHz, DCLS and AM time codes (IRIG B, AFNOR,
IEEE1344 or C37.118).
Each MRI card is dedicated to one clock module, if a redundant solution requires external synchronization
inputs for both clock modules, two MRI cards have to be installed. The MRI card is available with 4x BNC
connectors.
Reference Inputs: 10MHz, PPS, IRIG, TC-AM / TC-DCLS
Status Indicators
LED St: MRI status
LED In: Status of the backplane's reference signals
LED A: Status of the input signals (TC-AM/DCLS) at the board
LED B: Status of the input signals (10MHz/PPS) 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 timecode AM or timecode DCLS
or both signals are available at the same time
LED B: green, if 10 MHz or PPS
or both signals are available at the same time
Figure right: MRI - standard input signals
Power Requirements: 5 V +-5%, 50 mA
IMS-M3000
via BNC female connectors
Date: 21st August 2019
12 Attachment: Technical Information
47