B&B Electronics 850-14200--95 - Manual - Manual (Page 14)

11
Monitor/Boost Mode
This mode adds 20dB to 32dB of gain to the T1/E1 Receive port allowing it to be
connected to standard T1/E1 passive Monitor Jacks found on most cross connect
patch panels. This mode allows the unit to function as a remote monitor of an
active T1 or E1 circuit. The “Trapped” active circuit can then be carried back
across the fiber lien to the maintenance center for remote monitoring.
NRZ (Non-Return-to-Zero)
This option allows the user to enable or disable the NRZ mode.
NOTE
There are currently no applications that use any other settings than AMI encoding
and NRZ disabled (Passive mode). Enabling NRZ can result in data corruption.
Enabling NRZ terminates the line coding on the copper line. This forces the
module to send raw data to the fiber line without line code information.
LED Operation
This section describes the LEDs and their functions. The Fiber port LED RM is the
only LED that should be lit on the modules under normal operating conditions.
LPBK
NO LNK
PBEO
NRZ
RM
NO LNK
SYM
Copper Port LEDs
Glows green when the module is set to one of the Loopback
modes.
Glows green when a UTP link is NOT established.
Only used when the Transmit Data Source option is set to
PRBS. This LED will glow amber when the iMcV-T1/E1/J1
Repeater module receives errors and will stay dark when the
converter receives a PRBS without errors.
Fiber Port LEDs
Glows green when the NRZ mode is enabled.
Glows green on the Remote Unit when set to DSW S3-2.
Glows green on the Local unit when it has discovered a
Remote management with Remote Unit enabled.
Glows green when a fiber link has NOT been established.
Glows amber when a 4-bit to 5-bit (4b/5b) symbol encoding
error in the fiber line is detected.