American Fibertek MRX-8489C - Manual (Page 9)

9
MRX-8489C STATUS INDICATORS
The MRX-8489C receiver provides the following front panel LED status indicators to aid in
installation and troubleshooting:
DATA
These indicators turn green when any data activity is present. An active DATA TX LED indicates
data is present at the input terminals to the MRX-8489C. An active DATA RX LED indicates
data is present at the output terminals of the MRX-8489C. When configured for contact closure,
the Tx and Rx LEDs will be off to indicate contact open and on to indicate contact closed. When
configured for RS-485, an active Hi-Z LED indicates the MRX-8489C has seized the data line to
allow data flow. The intensity of the indicators will vary with input data patterns, however, the Hi-
Z LED will typically appear dimmer than the data Tx and Rx LEDs. The data channels
associated with these front panel DATA LEDs are listed below.
Configuration Protocol DATA 1 TX DATA 1 RX DATA 2 TX DATA 2 RX
RS485 RS485 Tx RS485 Rx Hi-Z Hi-Z
RS422 RS422 Tx RS422 Rx Not Used Not Used
Contact Closure Not Used Not Used Contact State Contact State
RS422/Contact Closure RS422 Tx RS422 Rx Contact State Contact State
OLI 1
A bi-color LED indicator monitors the power of the optical input signal that is being received at
the MRX-8489C from video channels one through four of the MTX-8489C. AC power and optical
input status associated with this LED are summarized below. Please note that data is sent as a
subcarrier on channel one’s video signal.
Optical Level Indicator AC Power Status Optical Status
Green On Proper Optical Input Power Present
Red On Optical Input Not Detected
Off Off Check Power Supply Input