American Fibertek MTM-1485 User Manual
Page 6
6
MTM-1485 STATUS INDICATORS
The MTM-1485 transmitter provides the following LED status indicators to aid in
installation and troubleshooting:
OLI
A bi-color LED indicator monitors the optical input power of the data signal that is being
received at the MTM-1485 from the MRM-1485 or the RRM-1485. 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
VLI
A bi-color LED indicator is provided for the video input to the MTM-1485. DC power and
video status associated with this LED is 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
DATA TX
A red LED indicator is provided to monitor the RS485 input data from the electrical
interface, through the MTM-1485, 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. RS485 status associated with this LED is summarized below.
DATA TX LED
RS485 Status
Red
Data Flow Present
Off
Data Flow Not Detected
DATA RX
A red LED indicator is provided to monitor the RS485 data coming in from the fiber,
through the MTM-1485, 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. RS485 status associated with this LED is summarized
below.
DATA RX LED
RS485 Status
Red
Data Flow Present
Off
Data Flow Not Detected