American Fibertek MT-944C - Manual (Page 7)

7
MT-944C STATUS INDICATORS
The MT-944C 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 the data and contact closure channels. TX1
and RX1 correspond with the multi-protocol input/output of data channel.
DATA TX
A green LED indicator is provided to monitor the data coming in from the electrical interface, through
the MT-944C, and out onto the fiber. The intensity of this indicator will vary with input data patterns,
however in typical data applications it will cycle on and off as data is transmitted. Data transmit status
associated with this LED is summarized below.
DATA TX LED Data Status
Green Data Flow Present
Off Data Flow Not Detected
DATA RX
A green LED indicator is provided to monitor the data/contact closure coming in from the fiber, through
the MT-944C, and out onto the electrical interface. The intensity of this indicator will vary with input data
patterns, however in typical data applications it will cycle on and off as data is received. Data receive
status associated with this LED is summarized below.
DATA RX LED Data Status
Green Data Flow Present
Off Data Flow Not Detected
VLI 1 THROUGH VLI 4
A bi-color LED indicator is provided for each of the four video inputs to the MT-944C. DC power and
video status associated with each of these LED’s are summarized below.
Video Presence LED DC Power Status Video Status
Green On Proper Input Video Present
Red On Input Video Not Detected
Off Off Check Power Supply
OLI
A bi-color LED indicator monitors the optical input power of the data signal that is being received at the
MT-944C from the MR-944C or the RR-944C. DC power and optical input status associated with this
LED are summarized below.
Optical Level Indicator DC Power Status Optical Status
Green On Proper Optical Input Power Present
Red On Optical Input Not Detected
Off Off Check Power Supply