B&B Electronics 850-14300--39 - Manual - Manual (Page 11)

7
Loopback Type
This switch controls which data line is looped back when
the Loopback DIP Switch is enabled. The data line loopback
selection can be either Fiber Loopback or Coax Loopback.
By default this feature is set to COAX.
This feature can be controlled by SNMP management software
(iView
2 ) when the iMcV-DS3/E3/STS module is installed in a
managed chassis.
Jitter Attenuation
This switch selects the jitter attenuation location on the
coax transceiver. The jitter attenuation can be set on the
transmit side or on the receive side of the coax
transceiver.
Jitter attenuation is useful for decreasing jitter in the
coax data stream. This helps prevent data degradation
caused by jitter. Jitter attenuation is always enabled.
By default this feature is set to TRANSMIT.
This feature can be controlled by SNMP management software
(iView
2 ) when the iMcV-DS3/E3/STS module is installed in a
managed chassis.
FiberAlert
This switch enables or disables the FiberAlert feature.
This feature must only be enabled on the remote end of a
Host/Remote iMcV-DS3/E3/STS pair.
The FiberAlert feature uses the iMcV-DS3/E3/STS module LEDs
to indicate that a loss of one strand of fiber has
occurred. When a strand becomes unavailable, the iMcV-
DS3/E3/STS module at the receiver-end detects the loss of
the link. The module then responds by stopping the
transmission of the data and link signal until a new signal
or link pulse is received on the strand. The result is
that the NO LNK LED on both sides of the fiber connection
will light up to indicate the presence of a fault somewhere
in the fiber loop. By using FiberAlert, a local site
administrator can quickly determine wh3ere a fiber cable
fault is located.
By default this feature is set to DISABLED.