Datum Systems PSM-505L Satellite Modem

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Datum Systems PSM-505L Satellite Modem

SCPC Modems
Datum Systems
P/N: PSM-505L

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Warranty: 24 months

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PSM-500L L-Band Satellite Modem. Feature Set 505 - BPSK and QPSK/OQPSK modulation to maximum 5 Mbps data rate. Equipped with standard Viterbi & Reed-Solomon FEC and IBS Multiplexer. Default interface RS-449 via DB37 on rear panel, DRF00-080B (DB37 to DB25) cable also supplied. BUC Ref Osc type Standard 1 x 10 -8 High Stability OCXO. BUC power type: External 24 VDC, 4 Amp, Standard. Manual supplied on included CD.

Configuration options:	8PSK/QAM, 16QAM Modulation
	Data Rates up to 29.52 Mbps
	TPC FEC and Flexible LDPC FEC with Multiple Block Sizes
	HSSI and Ethernet Interfaces
	Selection of Interface Cables
	BUC Reference Stability and Power Supply Choices

Specifications

Maker:

Datum Systems

P/N:

PSM-505L

Intermediate Freq. Band:

L-band

Tx Frequency Range:

950-1750 MHz

Rx Frequency Range:

950-1900 MHz

Tuning Step Size:

1 Hz

Min Data Rate, kbps:

1.2 kbps*

Max Data Rate, Mbps:

29.52 Mbps**

Data Rate Resolution:

1 bps

Symbol Rate Range:

2.4 ksps to 14.76 Msps in 1 bps step sizes

Modulation Scheme:

BPSK
QPSK
OQPSK
8PSK
8QAM
16QAM

Forward Error Correction:

Viterbi
Reed-Solomon
Trellis (TCM)
Turbo (TPC)
LDPC

FEC Modes:

Concatenated RS: Selectable N & K, IESS 308/309/310 and CT Comp
Reed Solomon Depth: 4, 8 or 16
TPC Modes: M5 Full, Short & Legacy, Comtech and Advanced
LDPC Modes: Flexible LDPC with Multiple Block Sizes(7 block sizes of 256, 512, 1k, 2k, 4k, 8k & 16 k).

FEC Code Rates:

FEC	Code Rates
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
LDPC	1/2, 2/3, 3/4, 14/17, 7/8, 10/11, 16/17

10E-8 BER Performance @ Eb/No, dB (Typical):

Code Rates		1/2	2/3	3/4	7/8	0.922
Viterbi	QPSK	5.7		6.7	7.7
Viterbi+RS	QPSK	2.9		4.1	5.3
Viterbi+RS	8PSK		5.7
Turbo (TPC)	QPSK	2.3		2.8	4.0	4.9
	8PSK	5.2		6.8	7.9
	8QAM	4.2		4.8	6.1	7.2
	16QAM	5.1		6.0	7.5	8.5
LDPC-16k	QPSK	1.40	2.10	2.70	3.90
	8PSK			5.08	6.65
	8QAM	3.21	4.11	4.80	6.05
	16QAM	3.75	5.00	5.85	7.40
LDPC-4k	QPSK	1.71	2.47	3.13	4.30
	8PSK		4.51	5.55	7.20
	8QAM	3.65	4.53	5.32	6.65
	16QAM	4.18	5.48	6.37	7.84

Data Traffic Interface:

Standard Synchronous: Serial RS232, RS422, V.35, V.36, EIA-530(A)
Optional: HSSI, Ethernet IP 10/100 Base-T

Output Power Level:

+5 to -35 dBm

Output Level Stability:

± 0.5 dB over 0 - 50°C @ any level or frequency
± 0.25 dB over any 10°C range.

Occupied Bandwidth:

Intelsat IESS compliant α = 0.35

Recommended Channel Spacing:

1.4 x Symbol rate

Amplitude Accuracy:

±0.5 dB

Tx IF Impendance:

50 Ohm

Tx Connector Type:

Type N

Tx Return Loss:

10 dB minimum, 14 dB typical

Output Phase Noise:

Better than IESS-308/309 by 4 dB min, 6 dB typical

Harmonics:

< -50 dBc up to -10 dBm out, -40 dBc at +5 dBm

Output Spurious:

< -55 dBc/4kHz, Typical <-65 dBc/4kHz

Phase Accuracy:

< 1 degree

Carrier On/Off Isolation:

> 60 dB

Scrambler Types:

IBS, V.35, IESS, TPC, RS, LDPC, EFD

Tx Data Clock Sources:

Internal, Terminal Timing, External , Rx Recovered

Internal Stability:

2 x 10 -6 TCXO (Standard)

External Reference:

1, 5, 9, or 10 MHz input on rear panel

Adaptive Signal Predistorter:

Rx Сarrier Input Range:

-20 to -70 dBm, scales to -101 dBm at lower rates minimum = 10 log(symbol rate) - 135 dBm)

Maximum Composite Signal:

-5 dBm or +40 dBc, whichever is lower power

Rx IF Impendance:

75 Ohm

Rx Connector Type:

Type F

Rx Return Loss:

10 dB minimum, 14 dB typical

Rx Acquisition Range:

Programmable from ± 100 Hz to ± 1.25 MHz in 1 Hz increments

Acquisition Threshold:

0.5 dB Eb/No min (subject to FEC type, blocksize and code rate, check Eb/No curves)

Acquisition Time:

Example: FEC 1/2, EB/No = 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

Clock Tracking Range:

> ± 400 ppm

Receive Filtering:

Digital, n=6 Butterworth filter response

Descrambler Types:

IBS, V.35, IESS, TPC, RS, LDPC, EFD

Rx Data Clock Sources:

Internal, External, Mod Clock, Receive Clock

AGC Output:

Yes

Paired Carrier Re-use:

AUPC:

Yes. The AUPC function requires a data channel at 300 baud.
This data channel can either be external to the modem or provided by the internal IBS multiplexer when enabled

Framing and Deframing:

Unframed (no overhead), IBS (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)

ESC/AUX Port:

RS-232/RS-485

Drop and Insert:

Ethernet/IP Features:

Ethernet IP 10/100 Base-T interface, available in Bridge or Router modes with optional SnIP card (Linux Operating System)

User Interface:

LCD and keyboard on front panel
Full screen interactive display of all parameters in terminal mode
Web browser, available through the optional Ethernet Interface SnIP

Remote Monitor and Control:

Remote Packet Mode: Packet driven RS232/RS485 control and status
Terminal Mode: Full screen interactive display of all parameters
Web Browser: Available through the optional Ethernet Interface SnIP

Diagnostics:

IF, bidirectional and sat data loopbacks; built-in bidirectional BERT; pure carrier and sideband; form C relays

Redundancy :

Built in 1:1 redundancy

Power Supply:

90 to 264 VAC, 50/60 Hz, < 30 watts, 50 Watts
Max fully loaded including internal LNB power

BUC Power Supply:

Input:
115/230 VAC, 50 / 60 Hz
Output:
24 VDC @ 96 Watts, 4.0 A max
24 VDC @ 150 Watts, 5.4 A max
48 VDC @ 150 Watts, 3.2 A max
48 VDC @ 240 Watts, 5.0 A max
BUC Power Supply is external to modem

LNB Power:

Selectable: Off, 13 or 18 VDC

BUC Reference:

Frequency: 10 MHz
Level:- 3 dBm
Stability / Aging:
1 x 10-8 OCXO, 2 x 10-7/ year aging
Reference Phase Noise:
-110 dBc @ 10 Hz
-130 dBC @ 100 Hz
-140 dBc @ 1 kH
-150 dBc @ 10 kHz
-155 dBc @ 100 kHz

Opetaring Temperature Range:

0 to 50 C

Opreating Relative Humidity:

95%, non-condensing

Size:

1 RU
(483 mm(W) x 305 mm(D) x 44.5 mm(H)
19" x 12" x 1.75")

Weight:

3.18 kg (7 lbs)

Shipping Weight & Dims:

6.8 kg (15 lbs)
584 mm(W) x 483 mm(D) x 152 mm(H)
(23" x 19" x 6")

Notes:

* Min data rate @ 1/2 BPSK
** Max data rate @ 3/4 8PSK
*** All transmit encoders for all FEC modes are available in all models regardless of the FEC options purchased

Accessories

Datum Systems PSM-500 Accessories and Options

Datum Systems PSM-500 Feature Set Upgrades

Documentation

Datasheets