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MT-915C STATUS INDICATORS
The MT-915C transmitter provides the following LED status indicators to aid in installation and
troubleshooting:
DATA TX/RX INDICATORS
DATA TX and DATA RX indicators are provided to monitor each of the two available data channels.
DATA 1 TX and RX correspond with the multi-protocol input/output of DATA CH 1. DATA 2 TX and RX
correspond with the contact closure input/output of DATA CH 2.
DATA 1 TX
A green LED indicator is provided to monitor the data coming in from the electrical interface, through
the MT-915C, and out onto the fiber. The intensity of this indicator will vary with input data patterns;
however in typical applications it will cycle on and off as data is transmitted. Data transmitted status
associated with this LED is summarized below.
DATA 1 TX LED
Data Status
Green
Data Flow Present
Off
Data Flow Not Detected
DATA 1 RX
A green LED indicator is provided to monitor the data coming in from the fiber, through the MT-915C,
and out onto the electrical interface. The intensity of this indicator will vary with input data patterns;
however in typical applications it will cycle on and off as data is received. Data received status
associated with this LED is summarized below.
DATA 1 RX LED
Data Status
Green
Data Flow Present
Off
Data Flow Not Detected
DATA 2 TX
A green LED indicator is provided to monitor the contact input from the electrical interface, through the
MT-915C, and out onto the fiber. Contact status associated with this LED is summarized below.
Data 2 TX LED
Contact Status
Green
Contact Input Closed
Off
Contact Input Open
DATA 2 RX
A green LED indicator is provided to monitor the contact output from the fiber, through the MT-915C,
and out onto the electrical interface. Contact status associated with this LED is summarized below.
Data 2 RX LED
Contact Status
Green
Contact Output Closed
Off
Contact Output Open
