Cisco Cisco D9824 Advanced Multi Decryption Receiver 安装指南
L-Band Input and Processing
78-4039426-01 Rev D
267
LNB Power and Control
Parameter
Specification
Voltage
(RF1to RF3, RF4 does not
have an LNB supply)
have an LNB supply)
13 V Vertical/circular right,
18 V Horizontal/circular left
Off
Current
350 mA maximum
LNB Alarms:
No load - 6 mA
Overload - 360 mA minimum
DVB-S/DVB-S2
DVB-S/DVB-S2 Satellite Receiver
Parameter
Specification
L-Band Input
Number of Inputs
4 (one active at a time)
Input Connector Type
F-type, female, 75 ohms
Input Impedance
75 ohms
Return Loss
> 10 dB
Isolation Between Inputs
> 40 dB
L-band Frequency
950 to 2150 MHz
Tuning Step Size
1 MHz
Receive Spectrum Sense
Normal and Inverted
L-Band Power
Input Power Level per
Carrier
Carrier
-25 to -65 dBm (full transponder power)
DVB-S Modulation (EN 300 421)
Modulation
QPSK
Convolutional FEC Rates
1/2, 2/3, 3/4, 5/6, 7/8
Symbol Rate Range
1.0 to 45 MSymbols/s