Cisco Cisco Prisma II EDR Receiver Ficha De Dados
Page 3 of 6
Data Sheet
Unless otherwise noted, specifications are based on measurements made in accordance with
NCTA Practices for Measurements made on Cable Television Systems using standard frequency
assignments and are referenced to the ambient air temperature at the inlet to the Prisma II
chassis.
Table 4.
Mechanical
Specification
Units
High Density Forward QAM Tx
Notes
Depth
in.
cm
cm
8.80
22.35
22.35
Width
in.
cm
cm
1.03
2.62
2.62
Height
in.
cm
cm
3.48
8.84
8.84
Weight
lb
kg
kg
0.90
0.41
0.41
Module Width
slots
1
Table 5.
Link Performance
Channel Loading
MER†
BER
CNR‡
Notes
16 QAM
38
1 e-9
53.5
1, 2, 3, 4, 6
32 QAM
38
1 e-9
50.5
1, 2, 3, 4, 6
50 QAM
38
1 e-9
48
1, 2, 3, 4, 6
153 QAM (all digital)
36
1 e-9
5
† All MER measurements are equalized; test equipment may limit measured performance.
‡ For links using Prisma II SuperQAM transmitter launched into 60 km SM fiber with -5 dBm optical
input to the receiver (see note 5 below).
Notes:
1. With specified RF input levels and optical link conditions. CNR values referenced to CW
carriers.
2. For use with 256 QAM modulation; use of 64 QAM modulation will exhibit improved
performance.
3. Receiver with NEP = 7 pa /
Hz;
= 0.9 A/W.
4. BER is before Forward Error Correction (pre-FEC), with ITU-B J.83 Annex B QAM
modulation.
5. 153 QAM channel loading (all digital) is only valid up to 40 km.
6. Mathematical modeling available for performance calculations in Broadcast / Narrowcast
single receiver applications. Contact your Applications Engineering team.
Unless otherwise noted, specifications are based on measurements made in accordance with
NCTA Practices for Measurements made on Cable Television Systems using standard frequency
assignments and are referenced to the ambient air temperature at the inlet to the Prisma II
chassis.