Cisco Cisco TNCS Element Management System Data Sheet
Description
The Model 6920 node transponder is a special purpose status
monitoring transponder designed to interface with Scientific-
Atlanta’s Model 6920 Optical Node. It is controlled by Scientific-
Atlanta’s ROSA
monitoring transponder designed to interface with Scientific-
Atlanta’s Model 6920 Optical Node. It is controlled by Scientific-
Atlanta’s ROSA
Element Manager (EM) and Transmission Network
Control System (TNCS) element management systems.
The transponder monitors the operational parameters of the node
and allows remote control of many node functions.
Communications with the transponder is accomplished via the built-
in forward RF data carrier receiver and reverse RF data carrier
transmitter.
The transponder communicates with the ROSA EM and TNCS element management systems via the Phoenix
The transponder monitors the operational parameters of the node
and allows remote control of many node functions.
Communications with the transponder is accomplished via the built-
in forward RF data carrier receiver and reverse RF data carrier
transmitter.
The transponder communicates with the ROSA EM and TNCS element management systems via the Phoenix
RF Modem. The cutting-edge RF technology used in the Phoenix modem allows operation in networks that suffer
from a high level of ingress noise in the return path.
The transponder monitors a wide range of operational parameters, including:
from a high level of ingress noise in the return path.
The transponder monitors a wide range of operational parameters, including:
•
RF level of the forward data carrier
•
24 VDC supply
•
AC
supply
voltage
•
Internal station temperature
•
Housing
opened/closed
•
AGC voltage level
•
Receiver
status
•
Backup
control
If the status of any monitored parameter is outside of the established thresholds, the centrally located element
mangement console can activate an alarm. All alarm thresholds are remotely adjustable from the console.
The transponder has a frequency agile FSK data modem (within specified bandwidths), downloadable program
storage, and supports current Scientific-Atlanta (S-A) and AM Communications (AM) protocols. Frequency agility
allows the transponder to be remotely tuned to a new operating channel in the event that communication is
impaired by noise or ingress in the return spectrum. Dual protocol support permits automatic switchover on
command from either protocol.
The transponder utilizes internal non volatile memory for storage of the unit address, calibration data, and other
important operational parameters. Two front panel LEDs are present to indicate the unit is functioning properly,
and the unit is actively being polled. Programming is accomplished by connecting the Model 6585 Handheld
Programmer (1 required) to the RJ-45 style modular Craft connector, thereby allowing the user to configure,
control, and monitor this transponder. The unit is packaged in a die cast metal housing that plugs directly into the
status monitor socket in the 6920 housing.
Features
•
“Plug-in” compatibility with Model 6920 Fiber Optic Receiver Station
•
Frequency agile 5 to 40 MHz for reverse path – (within specified bandwidth)
•
Frequency agile 50 to 110 MHz for forward path – (within specified bandwidth)
•
Dual Protocol Support
•
Monitors and Controls Critical Internal Parameters
•
Controls all switches within the station
•
Simple and efficient installation – no switches or adjustments
•
Wide operating temperature range
Element Management
Transponder for Model 6920
Optoelectronic Node
Optoelectronic Node