PSM-500L L-Band VSAT/SCPC Satellite Modem

Datum Systems

PSM-500L L-Band VSAT/SCPC Satellite Modem

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  • Data rates of 1.2 kbps to 29.52 MHz
  • Firmware Upgradeable to 8PSK/TCM, 8QAM and 16QAM Modulation modes
  • Performance within 0.3 dB of Theoretical
  • Bridge or Router Ethernet IP Interface
  • DSP for fast acquisition of 315 ms at 9.6 kbps QPSK, 71 ms at 64 kbps QPSK
  • Compatibility with other modem manufacturers
  • Built-in 1:1 Redundancy

SKU: DTM102 Tags: , ,
  • Description
  • Technical Specifications
  • Support Documents

Overview

The PSM-500L is the ultimate L-Band modem. Datum Systems designed this latest low cost modem specifically for small low cost VSAT type earth stations. It matches the performance and features of the PSM-500, but connects directly to the L-Band input of a BUC and output of an LNB to eliminate the normal expensive transmit and receive converter equipment. This modem uses all of Datum Systems proprietary design technology implementations to achieve the best performance and reliability in the industry. The PSM-500L is the best modem value available.

The PSM-500L contains an internal 10 MHz reference for an LNB and BUC, which may be individually enabled or disabled as required. It uses internal power for standard LNB (13 or 18 Vdc up to 500 mA), and a supplied external power source that plugs into the unit rear panel for various BUC power requirements. The standard supplied BUC power supply is 24 Vdc (up to 4 A). Additional external power options include 12 or 48 Vdc. The optional internal ±1 x 10-8 high stability, low phase noise OCXO and Bias-T circuitry insures good BUC performance.

Details

  • Designed for Performance and Reliability
  • Data rates of 1.2 kbps to 29.52 MHz
  • Low Cost High Performance Turbo Products Codes
  • Super Performance LDPC
  • Firmware Upgradeable to 8PSK/TCM, 8QAM and 16QAM Modulation modes
  • Performance within 0.3 dB of Theoretical
  • Bridge or Router Ethernet IP Interface
  • DSP for fast acquisition of 315 ms at 9.6 kbps QPSK, 71 ms at 64 kbps QPSK
  • Compatibility with other modem manufacturers
  • Asynchronous Overhead Channel and AUPC standard on all units
  • Built-in 1:1 Redundancy

System Specifications
Operating Modes: Rx and Tx Continuous (SCPC), Optional Tx Burst
Tx Tuning Range: 950 to 1750 MHz, in 1 Hz Steps
Rx Tuning Range: 950 to 1900 MHz, in 1 Hz Steps
Data Rate Selection: 1 bps increments
Data Rate Minimum: 1.2 kbps rate 1/2 BPSK
Data Rate Maximum: 29.52 Mbps rate 3/4 8PSK
Data Rate Accuracy: Accurate to 2 x 10 –12 of relative clock reference
Symbol Rate Range: 2.4 ksps to 14.76 Msps in 1 bps step sizes
Available Modulation: BPSK, QPSK, OQPSK, 8PSK, 8QAM, 16QAM
Available TPC Modes: M5 Full, Short & Legacy, Comtech and Advanced
Concatenated RS: Selectable N & K, IESS 308/309/310 and CT Comp
Reed Solomon Depth: 4, 8 or 16
FEC Options
Viterbi - 1/2, 3/4, 5/6, 7/8 (k = 7) Trellis - 2/3
TPC-4K 1/2, 3/4, 7/8, 0.95, 21/44
TPC-16K 1/2, 3/4, 7/8, 0.922, 0.453
FlexLDPC 1/2 , 2/3, 3/4, 14/17, 7/8, 10/11, 16/17
Guaranteed Eb/No is 0.2 dB > Typical
Moddulator
Transmit Output Power: +5 to –35 dBm in 0.1 dB steps (max +3 dBm @ 50Ω)
IF Tx Impedance: 50Ω (Type N)
Return Loss: 14 dB typical, 10 dB minimum
Output Phase Noise: Better than IESS-308/309 by 6 dB typical, 4 dB min
Level Stability: ±0.5 dB, 0 ~ 50°C, MHz at 25°C
Level Accuracy: Accurate ±0.5 dB, 950 ~ 1750
Output Spurious: < -55 dBc/4 kHz, Typical < - 65 dBc/4 kHz
Carrier on/off Isolation: > 60 dB
Scrambler Types: IBS, V.35, IESS, TPC, RS, LDPC, EFD
Data Clock Sources: Internal, Terminal Timing, External, Rx Recovered
Internal Stability: 1 x 10 –8 OCXO (Standard)
External Reference: 1, 2,5 or 10 MHz input on rear panel
Transmit BUC Power: Nominal 24 VDC, 100 Watts (Or 12/36/48 VDC)
Max 60 VDC/6A up to 250 Watt
Transmit BUC Reference: 10 MHz at nominal – 3 dBm internal or external
Reference Stability: 1 x 10-8 OCXO, 2 x 10-7/ year aging (L-Band)
Reference Phase Noise: -110 dBc @ 10 Hz, -130 dBC @ 100 Hz, -140 dBc @ 1 kHz, -150 dBc @ 10 kHz, -155 dBc @ 100 kHz
Demodulator
Rx Carrier Input Range: -20 to -70 dBm, scales to -101 dBm at lower rates r
(minimum = 10 log(symbol rate) – 135 dBm)
IF Tx Impedance: 75Ω Type F -Connector
Return Loss: 10 dB minimum
Max Composite Input: - 5 dBm or +40 dBc, whichever is lower power
Input Phase Noise: Better than Intelsat by 6 dB typical, 4 dB min
Rx Acquisition Range: Programmable from ± 100 Hz to ± 1.25 MHz
Descrambler Types: IBS, V.35, IESS, TPC, RS, LDPC, EFD
Fast Receive Lock Performance
Example: FEC ½, EB/N0 = 6.0 dB, Acquisition Range of ± 30 kHz
• 315 ms at 9.6 kbps QPSK
• 175 ms at 9.6 kbps BPSK
• 71 ms at 64 kbps QPSK
Plesiochronous or Doppler Buffer Store
Receive Buffer Range: 4 bits to 524,280 bits, in 1 bit steps or delay time
Receive Clock Options: Internal, External, Mod Clock, Receive Clock
Terrestrial Interfaces
Standard Synchronous: Serial RS232, RS422, V.35, V.36, EIA-530(A)
Optional: HSSI
Ethernet IP 10/100 Base-T (Bridge & Router, QoS)
SCPS TCP/IP Acceleration (Software Only)
-Supports Up to 5 Mbps Aggregate throughput
and 200 Continuous Sessions
Advaned Ethernet IP, GigE, High PPS Throughput, Vyatta Bridge/Router
Dual G.703/E1 (D&I), Dual Bal Inputs (RJ-45), UnBal (BNC) Opt
Full E1, PCM-30 (CAS), PCM-31 (CCS), N X 64, N = 1 to 31 Time Slots
Multiplexer and Overhead Features
IBS Multiplexer: Built-in IBS Overhead Channel with standard and enhanced variable rate RS232 and RS485.
Supports Automatic Uplink Power Control (AUPC),
Remote Modem Control Interface and 2 Form-C Backward Alarms
Monitor and Control
Front Panel: LCD and Keyboard for easy control and status
Terminal Mode: Full screen interactive display of all parameters
Remote Packet Mode: Packet driven RS232/RS485 control and status
Optional Web Browser: Available through the Ethernet Interface SnIP
SNMP Available through the Ethernet Interface SnIP
Diagnostics
Loopback Modes: IF, bi-directional terr and sat data loopbacks
BER Test Pattern: 2047 or 2 23-1
BERT: Built-in bi-directional bit error rate test set
Carrier: Pure carrier and sideband
Form C Relays: Assignable faults to Form C rear alarm connector
Environmental and Physical
Prime Power Input: 90 to 264 VAC, 50/60 Hz, -48 VDC (HW Option), < 30 watts, 220 Watts Max fully loaded including internal BUC and LNB power
External BUC Supply: Input 115/230 VAC, 50 / 60 Hz
BUC Power Options
(Uses DIN Connector)
(PFC Optional):
(1) 24 VDC @ 96 Watts, 4A max
(2) 24 VDC @ 150 Watts, 5.4A max
(3) 48 VDC @ 150 Watts, 3.2A max
(4) 48 VDC @ 240 Watts, 5A max
LNB Output Power: Selectable: Off, 13 or 18 VDC
Operating Conditions: 0 to 50°C, to 95% humidity, non-condensing
Storage Temperature: - 20 to +70° C, 99% humidity, non condensing
Size: Rack mount - 1 RU (19”W x 12”D x 1.75”H)
Weight: Approximately 7 lbs fully configured
Certifications and Compliance
CE Certified for: EN55022 Class B (Emissions)
EN50082-1 Part 1 (Immunity)
Can/CSA C222 No. 950-95 (Safety)
UL-1950 (Safety)

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