Block Up Converter (Buc) Support; Demodulator; Receive - Comtec CDM-840 Installation And Operation Manual

CDM-840 Remote Router
Introduction
1.4.3.2

Block Up Converter (BUC) Support

Parameter
Reference (10 MHz)
Power Supply
(HW Option)
1.4.4

Demodulator

Parameter
Operating Frequency
Connector / Impedance
Input Power Range, Desired
Carrier
Maximum Composite
Operating Level
Absolute Maximum, No
Damage
Receive Filter Rolloff (Alpha)
Acquisition Range
Adaptive Equalizer
Return Loss
Monitor Functions
Monitor Es/No
Accuracy Rx Signal Level
1.4.4.1

Receive

Outbound (Hub to Remote)
Parameter
Data Rate (Pilots On)
Symbol Rate
FEC
Specifications
Supplied through Tx IF center conductor, 10.0 MHz ±0.06 ppm, selectable on/off, 0.0
dBm ±3 dB
Supplied through Tx IF center conductor and selectable on/off via M&C control
• 24V DC, 4.17 Amps max., 90W @ 50° C
• 48V DC, 3.125 Amps max., 150W @ 50° C
Specifications
950 to 2150 MHz L-Band, 100 Hz frequency resolution
Type 'N' female, 50Ω
-65 dBm + 10 (symbol rate in MHz) to -25 dBm
log
-5 dBm total composite power
• 20 dBc within 10 MHz band from the desired carrier for QPSK, 8-PSK, and 16-APSK
• 10 dBc within 10 MHz band from the desired carrier for 32-APSK
• 30 dBc outside of 10 MHz from carrier
-10 dBm
20%, 25%, 35%
±100 kHz
5-tap, selectable, corrects up to 3 dB tilt
12 dB, minimum (typical 15 dB)
Es/No estimate, receive signal level, frequency offset
±0.3 dB
±6 dB (typical)
Specifications
• QPSK 0.479 – 108.255 Mbps
• 8-PSK 1.740 – 160.0 Mbps
• 16-APSK 2.575 – 160.0 Mbps
• 32-APSK 3.623 – 160.0 Mbps
• QPSK 1 to 62 Msps
• 8-PSK 1 to 62 Msps
• 16-APSK 1 to 47 Msps
• 32-APSK 1 to 37 Msps
DVB-S2 Decoder (ACM, CCM, and VCM modes), Short Frame, Normal frame
1–12
MN-CDM840
Revision 3