Cisco Cisco TNCS Element Management System Data Sheet
Transponder for Prisma Model 6940/6942/6944 Optical Nodes
2
Specifications
Agile Transmitter
Parameter
Specification
Units
Notes
Carrier frequency
5 - 65
MHz
Remotely adjustable
Frequency step size
200
kHz
Modulation type
FSK
-
Deviation
± 67
kHz
Occupied bandwidth
400
kHz
RF output level
24 to 50
dBmV
Remotely adjustable
Output level step size
2.0
dB
Level stability
< ±2.0
dB
Over full temperature and frequency range
Frequency stability
± 7.5
kHz
Over full temperature and frequency range
Spurious and harmonics (5-2000 MHz)
> 55
dBc
Extinction ratio
> 60
dBc
From operational output level
Agile Receiver
Parameter
Specification
Units
Notes
Receive carrier frequency
45-174
MHz
Remotely adjustable
Frequency step size
200
kHz
RF input level range
–25 to 20
dBmV
Selectivity at frequency offset of:
200 kHz
200 kHz
400 kHz
800 kHz
800 kHz
+30
+40
+50
+40
+50
dBc
dBc
dBc
dBc
dBc
Specifies the amount an adjacent carrier’s
level can exceed the transponder receive
carrier’s level at the transponder input,
without causing interference
level can exceed the transponder receive
carrier’s level at the transponder input,
without causing interference
Monitored Parameters
Device
Parameter
Units
Optical Receivers (RX ‘s 1- 4)
Optical Receive Power
mW / dBm
Optical Transmitters (TX’s 1-4)
Optical Transmit Power
mW / dBm
Transponder
RF Input Level
dBmV
Node
Internal Temperature
deg C / deg F
Power Supply
+ 24 V DC Output Voltage
V DC
Power Supply
+ 15 V DC Output Voltage
V DC
Power Supply
- 6 V DC Output Voltage
V DC
Controllable Parameters
Device
Control Variables
Device
Control Variables
Optical RX 1 & 2 Select Switch
Primary / Secondary
Port 3 Reverse Switch
Normal / -6 dB / Off
Optical RX 3 & 4 Select Switch
Primary / Secondary
Port 4 Reverse Switch
Normal / -6 dB / Off
Optical RX 1 & 2 Switch Level
0-2mW Optical Receive Power
Port 5 Reverse Switch
Normal / -6 dB / Off
Optical RX 3 & 4 Switch Level
0-2mW Optical Receive Power
Port 6 Reverse Switch
Normal / -6 dB / Off
Power Supply Monitor
Monitor 1 / Monitor 2
Common Reverse Switch
Normal / -6 dB / Off
Primary Optic Restore Time
Time primary Optical level must be
present before returning to primary
present before returning to primary
0-255 Seconds
Environmental Specifications
Parameter
Specification
Units
Notes
Operating Temperature
-40
to +85
○
C
Humidity
0 to 90
%
Non Condensing