Tests and Diagnostics
GARD 8000 SYS RFL Electronics
February 14, 2011 11-12 973.334.3100
Chassis Location:
Indicates the physical location of the communications interface in the chassis. The chassis
position, slot number, and location on the interface board, top or bottom is provided.
The Teleprotection module contains a Multiprotocol function on it. If the location is identified
by “Slot X, front” this indicates that the Digital Interface Module function is located on a
Teleprotection module located in slot X on the front of the chassis.
If the location is identified by “Slot X, top rear” this indicated that this is an independent
Digital Interface Module located in the rear of the chassis in slot 9 on the top half of the
module.
Line Rate:
Provides the line rate, or bandwidth, of the Digital interface module to the external communications
equipment.
Configured:
Indicates that the module is properly configured. Green indicates that the modules configured,
red indicates that the module is not configured.
Major Alarm:
For the framer, a major alarm is loss of sync (RLOS). This alarm is also applied for loss of
carrier and unframed all ones; both conditions result in a loss of sync. Green indicates that the
Major Alarm is not active; red indicates that the Major Alarm is active.
Minor Alarm:
Becomes active when the module is placed in loop-back mode.
Remote Alarm:
Indicates that the remote terminal is in an alarm state.
Service Enabled:
Indicates that the interface is enabled, passing information to the remote terminal. Green
indicates that the interface is enabled, red indicates that the interface is not enabled.
PLL Lock:
Indicates a valid Phase Lock Loop, received data and received clock are locked together and
not drifting with respect to each other. Failure to properly lock could result in bit errors and
communication failure.
Frame Lock:
Indicates that the framer has properly locked on the received data’s framing bit.
Transmit Activity:
Indicates the presence of outgoing data on the communications bus from the Digital Interface
Module. This would be the data being received from the remote terminal.
Receive Activity:
Indicates the presence of incoming data to the Digital Interface Module to the communications
bus. This is the data that is going to be sent to the remote terminal.
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