Cisco uBR-3x10 Hardware Installation And Cabling Manual page 122

RF Specifications
RF Specifications
The following table lists the RF specifications for the Cisco uBR 3x10 RF Switch.
Table A-2 RF Specifications
Description
Input/output impedance
Maximum RF input power
Switch type
Switch settling time per switch board
Downstream frequency range
Typical downstream insertion loss
<450 MHz:
>/=450 MHz, <550MHz
>/=550 MHz, <650 MHz
>/=650 MHz, <860 MHz
Downstream insertion loss flatness
Downstream output return loss
Downstream input return loss
Downstream isolation
Upstream frequency range
Typical upstream insertion loss
Upstream insertion loss flatness
Upstream input return loss
Upstream isolation
Protect mode
Cisco uBR-3x10 RF Switch Hardware Installation and Cabling Guide
A-2
Specification
75 ohms
+15 dBm (63.75 dBmV)
Electromechanical, absorptive for working path on-absorptive on the protect path
20 ms. maximum
54 to 860 MHz
CMTS to Cable Plant
5.25 dB
5.50 dB
5.75 dB
6.00 dB
±1.1 dB from CMTS to Cable Plant; ± 2.1 dB from Protect to Cable Plant
>15.0 dB at <450 MHz; >12.0 dB at >/= 450 MHz
>15.0 dB
>60 dB channel to channel in working mode; >52 dB from CMTS to Protect when
in protect mode
5 to 70 MHz
4.1 dB from cable plant to CMTS; 5.2 dB from cable plant to Protect
± 0.4 dB from Cable Plant to CMTS; ± 0.6 dB from Cable Plant to Protect
>16 dB
>60 dB channel to channel in working mode; >60dB from CMTS to Protect when
in protect mode
CMTS return loss: >10 dB; Cable Plant return loss: >10 dB
Appendix A Specifications and Component Part Numbers
Protect to Cable Plant
6.25 dB
6.50 dB
7.00 dB
8.00 dB
OL-1984-06