5 IMS-VSG181H Module Connectors and Indicators
The LEDs show the following colors and patterns to indicate the following states:
"St" LED: System Status
Blue
Internal operating system is initializing IMS-VSG181H
Green
Internal operating system has initialized IMS-VSG181H
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"In" LED: Reference Signal Status
Reports status after initialization by operating system
Green, not flashing
IMS-VSG181H is synchronized (accurate to
≤
200 ns against reference)
Green, flashing
IMS-VSG181H is synchronized against reference signal, but module
oscillator is not yet warmed up
Yellow
IMS-VSG181H is not yet synchronized against the reference signal, but a
signal has been found
Red
IMS-VSG181H cannot find a stable reference signal and therefore cannot be
synchronized
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"A" LED:
Black Out
Output Status
This LED will usually display the following color pattern when the IMS system is booted:
1 second red -> 1 second yellow -> 1 second green -> 1 second off
Off
Black Out signal is disabled or has not been configured
Green, flashing
Adjusting timing pattern of Black Out signal
Yellow, flashing
Adjusting timing pattern of Black Out signal, module oscillator is not yet
warmed up
Green, not flashing
Output enabled, module oscillator is warmed up (timing is being fine-tuned)
Yellow, not flashing
Output enabled, but module oscillator is not yet warmed up (timing is
homing in to approximate levels)
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"B" LED:
LTC Out
Output Status
This LED will usually display the following color pattern when the IMS system is booted:
1 second red -> 1 second yellow -> 1 second green -> 1 second off
Off
LTC signal is disabled or has not been configured
Green, flashing
Adjusting timing pattern of LTC signal
Yellow, flashing
Adjusting timing pattern of LTC signal, module oscillator is not yet
warmed up
Green, not flashing
Output enabled, module oscillator is warmed up (timing is being fine-tuned)
Yellow, not flashing
Output enabled, but module oscillator is not yet warmed up (timing is
homing in to approximate levels)
The status of the DARS and word clock outputs are not indicated by the status LEDs. Please refer to
the LANTIME Web Interface for more information on the status of these signal outputs.
Please refer to the chapter "Configuration and Setup via Web Interface" for more information.
IMS-VSG181H
Date: March 2, 2022
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