PSM-500L Satellite Modem
The PSM-500L is the ultimate L-Band modem. Datum
Systems designed this
latest low cost modem specifically to
build low cost VSAT type small 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. The PSM-500L Satellite Modem is manufactured for System Integrators and is available
with private labeling for volume customers.
This newly designed modem uses all of Datum Systems proprietary design
technology implemented with the latest available parts to achieve the best performance and reliability possible at one of
the lowest costs on the market.
The PSM-500L is a variable data rate programmable satellite modem with
L-Band transmit and receive IF. It
is available in 3 firmware upgradeable feature sets, the M505, M511 and M520.
The
digital modem is programmable for either BPSK or QPSK operation and can be used in
a wide variety of system configurations. The standard PSM-500L includes integral Viterbi
and Reed-Solomon Forward Error Correction, programmable data interfaces and built-in 1:1
redundancy capability. It now includes as standard an IBS
Multiplexer with AUPC, overhead channel(s) and
Remote Modem Control. New options
include a 16k Block high performance Turbo Product Codes FEC. External interface converters are available for G.703 T1 or E1.
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 which plugs into the unit rear panel for various BUC
requirements. The standard supplied BUC power supply is 24 Vdc at up to 4 A,
options include 12 or 48 Vdc for specific BUCs. The internal ±1 x 10-8
high stability, low phase noise OCXO and Bias-T circuitry insures good BUC
performance.
View the data sheet in HTML format here
M500L Data Sheet,
or
Download/View the data sheet in Adobe Acrobat (PDF) format
here M500L PDF Download
Key Benefits
 | More "Bang for the Buck" than any L-Band
modem on the market. |
| Firmware Upgradeable to 8PSK/TCM and
16QAM Modulation modes. |
| Performance within 0.3 dB of theoretical. |
| NEW low cost, high performance Turbo Products Codes FEC available. See
performance in Tech Note 6 |
| Data rate programmable from 1200 bps to
20 Mbps in 1 bps increments, depending on modulation
and feature set installed. |
| Transmit IF frequency programmable from 950 to
1750 MHz in 1Hz increments.
Optionally entering the BUC LO frequency
allows setting directly at Transmit RF frequencies. |
| Receive IF frequency programmable from 950 to 1900 MHz in 1Hz increments.
Optionally entering the LNB LO frequency allows setting directly at Receive
RF frequencies. |
| DSP for fast acquisition of 315 milli-seconds at 9.6 kbps QPSK, 196 milli-seconds at 16 kbps
QPSK. |
| Added programmability for compatibility with virtually any equipment
complement. |
| Eight user defined complete configurations can be stored and recalled. |
| New Programmable IBS Multiplexer and Reed-Solomon Codec
are built in - standard on all units. |
| Built-in independent transmit and receive BERT.
The BERT can now serve as a DTE test set on the line side. |
| Built-in 1:1 redundancy capabilities and logic requiring only an external
splitter/combiner (for RF) and a "Y" cable for data. |
| 1 U rack mount unit with complete front panel and remote control. |
| Designed to accept newer interfaces and options, like Turbo Product Codes
FEC and Ethernet Data Interfaces. |
