3
DATA INPUT CONNECTIONS
Data input connections are made via a terminal block located on the side of the unit. Follow the label on
the MRM-1200B for proper orientation of data input wires.
Please note that the terminals labeled
‘DATA OUT’ are not used on this unit.
Please note that Data In on the MRM-1200B becomes Data Out on the MTM-1200B or RTM-1200B
after going across the fiber.
MRM-1200B STATUS INDICATOR
The MRM-1200B receiver provides the following LED status indicator to aid in installation and
troubleshooting:
OLI
A bi-color LED indicator monitors the power of the optical input signal that is being received at the
MRM-1200B from the MTM-1200B or the RTM-1200B. 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