American Fibertek RR-944C User Manual
Page 7
7
RR-944C STATUS INDICATORS
The RR-944C receiver provides the following LED status indicators to aid in installation and
troubleshooting:
DATA TX
A green LED indicator is provided to monitor the RS485, RS422 or Manchester input data from the
electrical interface, through the RR-944C, 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 or RS422 status associated with this LED is summarized below.
Data TX LED
RS485/422/Manchester Status
Green
Data Flow Present
Off
Data Flow Not Detected
DATA RX
A green LED indicator is provided to monitor the RS485 or RS422 data coming in from the fiber,
through the RR-944C, 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 or
RS422 status associated with this LED is summarized below.
Data RX LED
RS485/422 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 outputs from the RR-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 Output Video Present
Red
On
Output Video Not Detected
Off
Off
Check Power Supply
OLI
A bi-color LED indicator monitors the optical input power of the video/data signal that is being received
at the RR-944C from the MT-944C or the RT-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