PSM-500 IF VSAT/SCPC Satellite Modem

Datum Systems

PSM-500 IF VSAT/SCPC Satellite Modem

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  • Data rates of 1.2 kbps to 29.52 MHz
  • 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: DTM101 Tags: , ,
  • Description
  • Technical Specifications
  • Support Documents

Overview

The PSM-500 is Datum Systems’ latest modem series intended to replace and surpass the features and performance of the very popular PSM-4900, while being completely backward compatible. The PSM-500 modem uses all of Datum Systems proprietary design implementations to achieve the best performance and reliability in the industry. The PSM-500 offers its customers the best value modem available.

The PSM-500 is a variable data rate programmable satellite modem with 70 MHz or 140 MHz IF options. It is available in 3 firmware upgradeable feature sets, the M505, M511 and the M523, which also includes data rates up to 29.52 Mbps. In addition to standard BPSK, QPSK or OQPSK, the PSM-500 can be upgrade via firmware to add 8PSK, 8QAM or 16QAM.modulation types. This modem is capable of having a wide variety of FEC configurations, including Viterbi (standard), Turbo and super performance LDPC. Turbo FEC options include Advanced “state of the art” 16k Block Turbo Product Codes and compatibility modes for multiple applications. The standard PSM-500 includes multiple data interfaces options and built-in 1:1 redundancy. The PSM-500 comes standard with an IBS Multiplexer, Asynchronous Overhead channel(s), AUPC and Remote Modem Control

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: 50 to 90 MHz or 100 to 180 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
Modulator
Transmit Output Power: +5 to –35 dBm in 0.1 dB steps (max +3 dBm @ 50Ω)
IF Tx Impedance: 75Ω or 50 Ω selectable from the front panel (BNC)
Return Loss: 20 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, 50 to 90 MHz or 100 to 180 MHz
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 –6 TCXO (Standard)
External Reference: 1, 2,5 or 10 MHz input on rear panel
Demodulator
Rx Carrier Input Range: -20 to -60 dBm, scales to -84 dBm at lower rates
(minimum = 10 log(symbol rate) – 120 dBm)
IF Tx Impedance: 75Ω or 50Ω selectable from Front Panel (BNC)
Return Loss: 20 dB minimum
Max Composite Input: +15 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 or -48 VDC (HW Option), < 30 watts
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 congured
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)
RoHS Compliant: Meets RoHS lead-free standards

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