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Paradise Datacom PD20 Quantum Series DVB-S2 IF Modem

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  • Paired Carrier Operation (optional)
  • Data Rate options to 20 Mbps
  • Supports up to two Quad E1 cards
  • DVB-S2 FEC and modulation support


Common Main Specifications
Modulation Scheme SCPC: BPSK, QPSK, OQPSK, 8PSK (Option), 8APSK (Option), 16QAM (Option)

DVB-S2 (Option): QPSK, 8PSK, 16APSK
L-Band Frequency Range 950 - 1950MHz
L-Band Frequency Resolution 100Hz
L-Band Interface - Electrical Ethernet (10/100 BaseT) IP Traffic on RJ45 with link and traffic indicators. Electronically selectable with other interfaces fitted.
Traffic Interface - Options RS422 including X.21 DCE and DTE emulation, V.35 and RS232 on EIA530 connector 25 pin female D-type (Option), EIA530 maximum 10Mbps, RS232 max 100kbps

Serial LVDS 25 pin female D-type (Option)

HSSI 50 pin HD SCSI-2 connector (Option)

G.703 balanced on EIA530

G.703 unbalanced on BNC female 75O

Quad E1 G.703 balanced on RJ45

IP Traffic card 10/100/1000 BaseT on RJ45

Eurocom D/1 on 25 pin male D-type includes: Eurocom D <16kbps to >2,048kbps AMI coded Eurocom C 256kbps, 512kbps, 1,024kbps and 2,048kbps HDB3 coded, plus Eurocom G 16kbps or 32kbps diphase coded

MultiMux feature allows a mix of multiple G.703 interfaces plus IP and/or EIA530 traffic with a limit of 2,048kbps per MultiMux traffic port (4 x ports max)
User Traffic Data Rate SCPC: 4.8kbps - 2,048kbps in base Modem DVB-S2 50kbps - 2,048kbps in base Modem, subject to minimum symbol rate of 100kbps

Extension of base operation to 5Mbps (Option)

Extension of 5Mbps to 10Mbps (Option)

Extension of 10Mbps to 20Mbps (Option)

Extensions are cumulative
User Traffic Data Rate Resolution 1bps
Note: The combination of FEC Rate, Modulation scheme and Satellite Overhead limits the Traffic Data Rate Range in all modes.
User Data Rate Range - Clsed Network 4.8kbps to 20Mbps no Satellite Overhead (with high Data Rate options)
User Data Rate Range - Minimum Overhead

(Closed Network plus ESC)
As Closed Network above except limits inclusive of overhead of approximately 1.4 times the ESC baud rate. Resolution of 1bps. Supports ESC rate from 110 baud to >38.4kbaud.
User Data Rate Range - IBS/SMS Option 4.8kbps to 10 Mbps (6.7% Satellite Overhead added). Resolution of 1bps.
User Data Rate Range - IDR Option 4.8kbps to 10 Mbps (96k overhead added) Resolution of 8k (limitation of frame structure)
Audio Channels Option

(P1348 Emulation mode)
Used with IBS/SMS satellite framing and IDR Options to provide 2 x audio 32kbps ADPCM coded channels within a 64kbps IBS carrier, and 2 x audio 32kbps ADPCM coded channels plus 64kbps data within a 128kbps IBS carrier
Inner Forward Error Correction Viterbi BPSK/QPSK/OQPSK - Rates 1/2, 3/4, 7/8, k=7 to IESS-308/309

Option: Sequential BPSK/QPSK/OQPSK - Rates 1/2, 3/4, 7/8 up to 2,048kbps maximum

Option: TCM 8PSK - Rate 2/3 to IESS-310

Option: TPC BPSK - Rates 5/16, 21/44, 0.493 (Paradise), 2/3, 3/4, 0.789 (Paradise), 7/8 (Paradise), Rate 7/8 de facto

Option: TPC QPSK/OQPSK - Rates 5/16, 21/44, 0.493 (Paradise), 2/3, 3/4, 0.789 (Paradise), 7/8 (Paradise), Rate 7/8 de facto, Rate 0.93 (Paradise)

Option: TPC 8PSK - Rates 3/4 de facto, 7/8 de facto, Rate 0.93 (Paradise)

Option: TPC 16QAM - Rates 3/4 de facto, 7/8 de facto, Rate 0.93 (Paradise)

Option: DVB-S2 LDPC/BCH Short FECFRAME=16.2k QPSK/ - Rates 1/2, 2/3, 3/4, 8PSK/8APSK - Rates 2/3, 3/4, 16QAM - Rate 3/4
Outer Forward Error Correction Concatenated Intelsat Reed-Solomon Outer Codec to IESS308/310 with Custom Option offering variable code rate. Maximum traffic rate 10Mbps.
Scrambling - IBS/SMS Opton Synchronised to framing per IESS-309 up to 10 Mbps
Scrambling - IDR Option and Closed Network With RS Coding: synchronised to RS overhead. Without RS Coding and Non-TPC FEC: V.35 self synchronising No RS Coding with TPC FEC: 2⊃12-1 up to 10 Mbps
Scrambling - SCPC Closed Network Plus ESC 32kbps or above: synchronised to ESC overhead. Less than 32kbps: as per closed network. V.35 Scrambler has CCITT, Intelsat, “FDC” and “Linkabit” modes up to 20Mbps (with high Data Rate options)
Scrambling - DVB-S2 As per ETSI EN 302307
L-Band Connector Type N type female
L-Band Impedance 50Ω
Return Loss 14dB typical
Internal Frequency Reference - Ageing 4E-8/yr
External Reference Clocking Only: 1-10MHz in 1kHz steps. Clocking and RF Frequency: 10MHz, 0dBm±1dB
BER Performance - Guaranteed dB (Typical)
Modulator Specifications
Output Power Level -5 to -30dBm Continuously Variable in 0.1dB steps
Output Level Stability ±0.5dB, 0ºC to 40ºC
Phase Accuracy ±2º maximum
Amplitude Accuracy ±0.2dB maximum
Carrier Suppression -30dBc minimum
Output Phase Noise As IESS-308, nominally 3dB better
Output Frequency Stability 4E-8/yr
Harmonics Better than -55dBc/ 4kHz in band
Spurious Better than -55dBc/ 4kHz in band
Transmit On/Off Ratio 55dB minimum
External Transmit Inhibit By external contact closure or by TTL signal applied to rear panel Alarms & AGC connector
Adaptive Signal Predistorter Option: Use with 16QAM to relax HPA backoff by up to 1.6dB. Compensates for HPA non-linearities.
Demodulator Specifications
Input Range Wanted Signal Minimum level -130dBm + 10 log symbol rate Range 50dB above min, limited to -20dBm max
Maximum Composite Signal 30dB above level of desired input up to a maximum of -10dBm
Frequency Acquisition Range Selectable from ±1kHz to ±32kHz up to 10 Msps (1kHz steps)

±10kHz to ±250kHz above 10 Msps (10kHz steps)
Acquisition Threshold <5dB Es/No QPSK
Acquisition Time At 9.6kbps, less than 1s at 6dB Es/No QPSK

At 10 Mbps, less than 100ms at 6dB Es/No QPSK
Clock Tracking Range ±100ppm minimum
Receive Filtering Selectable Intelsat IESS compliant a = 0.35, a = 0.25, a = 0.20
Performance Monitoring Measured Eb/No (range 0-15dB, ±0.2dB).

Measured Frequency Offset (100Hz resolution).

Wanted signal level strength indicator centred on the middle of the Rx Input range.
AGC Output Buffered direct AGC output for antenna tracking, etc.
See Datasheet for more Specifications

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