Comtech EF Data ODM-840 Advanced VSAT Solutions Remote IP Receiver Router

Transmit

Data Rate

16 kbps to 15.35 Mbps, in 1 bps step (CCM mode) (Modulation and FEC dependent)

Symbol Rate

16 ksps – 4.5 Msps (CCM mode)

FEC

VersaFEC Encoder (ACM and CCM modes)

Modulation & Code Rate

Data Rate Range

BPSK 0.488

16.00 kbps – 2.19 Mbps

QPSK 0.533

17.07 kbps – 4.80 Mbps

QPSK 0.631

20.19 kbps – 5.67 Mbps

QPSK 0.706

22.577 kbps – 6.34 Mbps

QPSK 0.803

25.69 kbps – 7.22 Mbps

8-QAM 0.642

30.83 kbps – 8.67 Mbps

8-QAM 0.711

34.14 kbps – 9.60 Mbps

8-QAM 0.780

37.44 kbps – 10.53 Mbps

16-QAM 0.731

46.80 kbps – 13.16 Mbps

16-QAM 0.780

49.92 kbps – 14.04 Mbps

16-QAM 0.829

53.04 kbps – 14.91 Mbps

16-QAM 0.853

54.60 kbps – 15.35 Mbps

Encapsulation

Ultra low overhead Streamline Encapsulation

Receive

Receive Data Rate (Pilots Off)

QPSK: 1.000 – 110.893 Mbps
8-PSK: 1.779 – 166.110 Mbps
16-APSK: 2.637 – 167.665 Mbps
32-APSK: 3.703 – 168.000 Mbps

Receive Symbol Rate

QPSK: 1 to 62 Msps
8-PSK: 1 to 62 Msps
16-APSK: 1 to 47 Msps
32-APSK: 1 to 37 Msps

FEC

DVB-S2 Decoder (ACM, CCM and VCM modes) Normal frame

Modulation & FEC

Data Rate Range
(Normal FEC frame, pilots off)

QPSK 1/4

1.000 – 30.395 Mbps

QPSK 1/3

1.000 – 40.699 Mbps

QPSK 2/5

1.000 – 48.943 Mbps

QPSK 1/2

1.000 – 61.309 Mbps

QPSK 3/5

1.188 – 73.674 Mbps

QPSK 2/3

1.322 – 81.979 Mbps

QPSK 3/4

1.487 – 92.223 Mbps

QPSK 4/5

1.587 – 98.406 Mbps

QPSK 5/6

1.654 – 102.589 Mbps

QPSK 8/9

1.766 – 109.519 Mbps

QPSK 9/10

1.788 – 110.893 Mbps

8-PSK 3/5

1.779 – 110.359 Mbps

8-PSK 2/3

1.980 – 122.799 Mbps

8-PSK 3/4

2.228 – 138.143 Mbps

8-PSK 5/6

2.478 – 153.670 Mbps

8-PSK 8/9

2.646 – 164.052 Mbps

8-PSK 9/10

2.679 – 166.110 Mbps

16-APSK 2/3

2.637 – 123.948 Mbps

16-APSK 3/4

2.966 – 139.436 Mbps

16-APSK 4/5

3.165 – 148.784 Mbps

16-APSK 5/6

3.300 – 155.108 Mbps

16-APSK 8/9

3.523 – 165.587 Mbps

16-APSK 9/10

3.567 – 167.665 Mbps

32-APSK 3/4

3.703 – 168.000 Mbps

32-APSK 4/5

3.951 – 168.000 Mbps

32-APSK 5/6

4.119 – 168.000 Mbps

32-APSK 8/9

4.397 – 168.000 Mbps

32-APSK 9/10

4.453 – 168.000 Mbps

Pilots

On/off, automatically detected

Encapsulation

Low overhead Enhanced GSE

Modulator

Operating Frequency

950 to 2150 MHz L-Band,
100 Hz frequency resolution

Frequency Stability

± 0.06 ppm (± 6 x 10^-8), 0° to 50°C (32° to 122° F)

Frequency Reference

Internal

Scrambling

Comtech, disabled

Spectral Inversion

Normal or inverted

Transmit Filtering

Per IESS-308/-309 spectral mask

Transmit Filter Rolloff (Alpha)

20%, 25% and 35%

Output Power

0 to -40 dBm, in 0.1 dB steps

Power Accuracy

± 1.0 dB over frequency, data rate, modulation type and temperature range of 0 to 50° C

Transmit On/Off Ratio

-60 dBc minimum

Harmonics and Spurious

Better than -60 dBc/4 kHz
(typically < -65 dBc/4KHz)
Measured from Fo +/- 300 MHz

Output Phase Noise
    @ 100 Hz
    @ 1 kHz
    @ 10 kHz
    @ 100 kHz

-66.0 dB/Hz
-76.0 dB/Hz
-86.0 dB/Hz
-96.0 dB/Hz

< 1º rms double sided, 100 Hz to 1MHz (minimum of 6 dB better overall than the Intelsat IESS-308/309 requirement)

Fundamental AC line spurious is -42 dBc or lower The sum of all other single sideband spurious, from 0 to 0.75 x symbol rate, is -48 dBc or lower

Connector

Type N (female)

Impedance

50 Ω

Return Loss

20 dB, minimum

External TX Carrier Off

By TTL ‘low’ signal

Test Modes

CW, 1/0 pattern, 2^23-1 and 2047 patterns

BUC Reference (10 MHz)

Via TX IF center conductor, 10.0 MHz ± 0.06 ppm, selectable on/off, 0.0 dBm ± 3 dB

BUC Power Supply (HW Option)

24 VDC, 4.17 Amps max., 90 W @ 50° C
48 VDC, 3.125 Amps max., 150 W @ 50° C
Supplied through TX IF center conductor and selectable on/off via M&C control

Demodulator Specifications

Operating Frequency

950 to 2150 MHz L-Band, 100 Hz frequency resolution

Connector

Type N (female)

Impedance

50 Ω

Input Power Range, Desired Carrier

-65 dBm + 10 log (symbol rate in MHz) to -25 dBm

Maximum Composite Operating Level

-5 dBm total composite power
20 dBc within 10 MHz band from the desired carrier for QPSK, 8-PSK, and 16-APSK
10 dBc within 10 MHz band from the desired carrier for 32-APSK
30 dBc outside of 10 MHz from carrier

Absolute Maximum, No Damage

-10 dBm

Rolloff

20%, 25%, 35%

Acquisition Range

+/- 100 kHz

Adaptive Equalizer

Corrects up to 3 dB tilt

Return Loss

12 dB, minimum (typical 15 dB)

LNB Reference (10 MHz)

Via RX IF center conductor, 10.0 MHz ± 0.06 ppm
Selectable on/off, -3.0 dBm ± 3 dB

LNB Voltage

Selectable on/off, 13 VDC, 18 VDC, 24 VDC

LNB Current

500 mA, maximum

Monitor Functions

Es/No estimate, receive signal level, frequency offset

Es/No Monitor Accuracy

+/- 0.3 dB

Receiver Signal Level Monitor Accuracy

+/- 6 dB (typical)

Packet Processor

Supported Protocols

RFC 768 – UDP
RFC 791 – IP
RFC 792 – ICMP
RFC 793 – TCP
RFC 826 – ARP
RFC 856 – Telnet
RFC 862 – Ping
RFC 894 – IP
RFC 959 – FTP
RFC 1112 – IP Multicast
RFC 1213 – SNMP MIB II

RFC 1812 – IPv4 Routers
RFC 2045 – MIME
RFC 2474 – Diffserv
RFC 2475 – Diffserv
RFC 2578 – SMI
RFC 2597 – AF PHB
RFC 2598 – Expedite Forwarding
RFC 2616 – HTTP
RFC 3412 – SNMP
RFC 3416 – SNMPv2
RFC 3418 – SNMP MIB

Statistics

Detailed packet and throughput stats

Connectors

L-Band Transmit and Receive

2 x N-type (female)

10/100Base-T Ethernet interface

RJ-45

G.703 E1, 2.048 Mbps (Unbalanced 75 Ω)

BNC (female)

Console / Redundancy Interface

19-pin circular connector

Available Options

Option

Type

-48 VDC, Primary Power Supply

Hardware

24 VDC, 90 W @ 50° C BUC Power Supply

Hardware

48 VDC, 150 W @ 50° C BUC Power Supply

Hardware

Extended (Low) Temperature Version

Hardware

Transmit Data Rate

FAST

Receive Data Rate

FAST

Lossless Payload Compression /
Decompression

FAST

Header Compression/Decompression

FAST

Advanced Quality of Service

FAST

E1 RAN Optimization

FAST

G.703 Clock Extension

FAST

Physical, Power & Environmental

Dimensions (1RU) (H x W x D)

9’’ x 5.5’’ x 16.75’’
(22.7 x 13.9 x 42.2 cm) approximate

Weight

22 lbs

Power Supply

100-240 VAC, 47Hz-63Hz 
-48 VDC (HW option)

Ingress Protection Rating

IP67

Operating Temperature

0° to 55°C 
-40° to 55° C (Extended Temperature Version, HW option)

Storage temperature

–40° to 70°C

Accessories

Mounting Kit

Regulatory

CE Mark

EN55022 Class B (Emissions)
EN50082-1 Part 1 (Immunity)
EN60950 (Safety)

FCC Approval

FCC Part 15 Class B