Cisco Prisma 1310 nm DFB Reverse Transmitter for Model 6920 Node Fiche De Données
Prisma 1310 nm DFB Reverse Tx for Model 6920 Node
2
Block Diagram
Status Monitor Input
Transmitter
Module RF Input
RF Test Point
(-20 dB relative to RF Input)
6920 1310 nm DFB Transmitter
Plug-in
Pad
20 dB
Coupler
20 dB
Coupler
Specifications
Parameter
Unit
Specification
Notes
Wavelength
nm
1310 +/- 20
Pass Band
MHz
5 – 200
Frequency Response
dB
+/- 0.5
1
Input Return Loss
dB
16
Optical Test Point
V DC
1V/mW (+/- 10%)
Optical Output Power
mW
dBm
2.0
3.0
3.0
Test Point Level
dB
-20
3
Test Point Return Loss
dB
16
Single CW RF Carrier Input Level for 100% OMI
dBmV
60
2
Noise Power Ratio Performance
See plot
See plot
Notes:
1. Frequency response for transmitter module only. Does not include the frequency response contribution of optical
1. Frequency response for transmitter module only. Does not include the frequency response contribution of optical
receiver.
2. This is the RF level that produces 100% composite Optical Modulation Index (OMI) at room temperature. This is used for
reference purposes only and is NOT the recommended RF drive level. Consult with Scientific-Atlanta’s Applications
Engineering group in order to determine the appropriate RF drive level for a particular application.
Engineering group in order to determine the appropriate RF drive level for a particular application.
3. The RF level measured at the transmitter module’s RF input is 20 dB above the level measured at the RF test point; i.e.
the test point is 20 dB below the RF input level.