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
- 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) |
PSM-500L L-Band VSAT/SCPC Satellite Modem Datasheet PDF
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