DM240XR Digital Video Broadcast Modulator with AutoEQ™
Satellite Modems

Typical Users
The DM240XR is DVB-S2 ready and can easily be upgraded in the field. The DM240XR provides • Broadcasters
a comprehensive set of advanced S2 features. The DM240XR extends its dominance in broadcast • Internet Service Providers
applications through increased data rate capability and the addition of 16APSK and 32APSK• Enterprise
support. Proven performance operating near Shannon's limit offers results with 30% better
Common Applications
bandwidth efficiencies and carrier to noise figures below the noise floor.
• Direct To HomeThe DM240XR includes the ability to select the output frequency of 70/140 MHz or L-Band• Broadcast Contribution andoperation without any hardware modifications. The modulator offers a frequency agile IF output
Distribution
from 50 to 90 MHz, 100 to 180 MHz and 950 to 2050 MHz in 100 Hz steps. The DM240XR offers • Satellite News Gatheringhigh data rates (up to 190 Mbps for the DVB-S2 and 238 Mbps for the DVB-S), and the most• Broadband Interactive Services
flexible modulation schemes available (QPSK, 8PSK, 16-QAM, 16APSK and 32APSK).
• Digital Cinema• EnterpriseThe DM240XR offers the flexibility to support up to three different data interfaces. The XR• High Speed Content Delivery
includes a built-in ASI interface along with the Plug-In Interface Card (PIIC) system which allows• IPTV / Business Television
for the selection of two additional data interfaces that can be easily upgraded in the field.

DVB Performance

Supported interfaces include DVB-ASI, HSSI, RS-422, M2P/DVB, LVDS M2P/DVB and Ethernet(Pro-MPEG CoP 3 and Bridge modes).
Remote interfacing can be achieved through one of three onboard connections: Ethernet (Web or SNMP), RS-485, or RS-232.
Additionally, FTP capability for firmware upgrades allows a quick, reliable method to update installed systems. The front panel offers
push-button control of all features and a backlit LCD display.
DVB-CID ETSI TS 103 129 is the ETSI standard for combating satellite interference and is largely based on Comtech EF Data’s awardwinning MetaCarrier® technology. MetaCarrier technology embeds and detects a small message and unique ID within a video or data
satellite carrier. This embedded message and ID significantly reduce the time to identify and clear interference sources. The
MetaCarrier is embedded using spread spectrum techniques within the carrier itself without adding appreciable noise or power to thehost carrier.
The DM240XR AutoEQ feature supports amplitude and group delay equalization over the satellite system. When installed, AutoEQ
offers the ability to compensate the overall system group delay and amplitude flatness by pre-correcting the uplink carrier. Thiseliminates the need for external group delay/amplitude equalizers and makes possible equalization at L-Band. The AutoEQ will operateover the full transponder from a symbol rate of 0.1 Msps to 45 Msps.

Features•••••••••••••••DVB-S and DVB-S2 ready
DVB-S2 data rates up to 190 Mbps
DVB-S2 CM, VCM & ACM support
DVB-S data rates up to 238 Mbps
QPSK, 8PSK, 16-QAM, 16APSK, 32APSK
Embedded MetaCarrier DVB-CID ETSI TS 103 129
Powerful LDPC with BCH coding
AutoEQ group delay and amplitude equalization
Frequency-agile 50 to 90, 100 to 180, and 950 to 2050 MHz
ETSI EN 302 307 (DVB-S2), ETSI EN 301 210 (DVB-S)ETSI EN 300 421 and ITU-1294 System B (DSS)
Built-in ASI data interface
Monitor port available
Web browser user interface
Multiple 1:1 and 1:N redundancy options available

www.comtechefdata.com

MetaCarrier TechnologyComtech EF Data developed the MetaCarrier technology, which is used to embed and detect Carrier ID on video and data satellite
carriers. The MetaCarrier name is derived from the method of providing transmission information via metadata. This is accomplished byspread spectrum modulation of a very low data rate carrier (containing metadata information about the referenced carrier) over a portionof the referenced carrier. A large spreading factor is used that results in spreading the meta-carrier’s energy over a significantly large
amount of bandwidth – many orders of magnitude of the original metadata rate. The resulting energy becomes a nearly undetectableamount of noise being added to the referenced carrier spectrum. De-Spreading results in a coding gain that is used to extract andseparate the MetaCarrier from its reference carrier.
MetaCarrier Carrier Identification has a minimal effect on the carrier quality and the quality of the carrier’s content. It can be read in theclear, by an MCDD, even if the referenced carrier is transmitted with conditional access or is otherwise encrypted. The MetaCarrier
embedding can be used on any static carrier, SCPC, video or other.
The MetaCarrier technology overlays the very low data rate Carrier ID data in a spread spectrum carrier, onto the host carrier that it isreferencing. In the below depiction, the MetaCarrier is placed 22 dB below the peak of the carrier it is identifying, at roughly the center
frequency of the carrier.

AutoEQ Automatic Uplink Equalization SystemThe AutoEQ Automatic Uplink Equalization System is the most user friendly satellite communication system equalizer available. Unlike
legacy analog equalizers which are difficult to adjust, the AutoEQ system is extremely easy to use. Transponder equalization is done in
the digital domain; it is very accurate and can compensate for amplitude and group delay variations that are nearly impossible tocompensate for with an analog equalizer.
The AutoEQ consists of special software built into the DM240XR coupled with a special digital receiver on a PIIC card. The receiver
analyzes the signal path while the software computes the compensating equalizer values. Equalizing the link typically takes less than 2minutes and can be done at the front panel or remotely.
A remote receiver capability is also supported for those systems where the DM240XR hub cannot see the return path from the distantend. Remote calibration is done by simply connecting and configuring the Ethernet control ports of the modulator and remote receiverto a network with internet access. The DM240XR takes care of the rest.
The AutoEQ Automatic Uplink Equalization System supports single channel per carrier (SCPC) equalization of group delay andamplitude over the entire satellite frequency range.
AutoEQ works with all modulation and coding types supported by the DM240XR (i.e. QPSK, 8PSK, 16-QAM for DVB-S and QPSK,
8PSK, 16APSK, and 32APSK for DVB-S2). The BER/bandwidth improvement is greater as the level of modulation increases.
The equalization process is nearly independent of receive signal to noise ratio. Accurate automatic equalization is possible down to thelowest specified levels of Eb/No associated with each modulation and coding type supported by the DM240XR.
The equalizer is based on the generation of complex coefficients. What this means is that it can even compensate for amplitude orgroup delay that is not symmetric over the carrier frequency spectrum, as would be the case if two independent carriers were placed on
one transponder.
Up to 32 sets of equalization parameters can be stored within the DM240XR. This allows a DM240XR to be preconfigured for multiple
carriers and multiple transponders.
Should the satellite uplink parameters change, recalibration of the AutoEQ can be easily initialized at any time, allowing for maximum
flexibility for the uplink earth station.
The end result is greatly improved bandwidth and power utilization of your satellite transponder.
Features• Full or partial transponder (complex) equalization• Digitized transponder characterization, plug and play
• No external adjustments required• Easily upgradable into existing DMD240XRs• Closed loop equalization using a plug-In PIIC receiver• Supports all DM240XR modulation and frequency parameters up to 45 Msps
• Capable of multiplexing LNB power
PhysicalStandard Plug-In-Interface Card (PIIC)

AutoEQ System Performance
Received 8PSK Over Typical Satellite without AutoEQ

Received 8PSK Over Typical Satellite with AutoEQSpecifications
IF Interface
TX IF
IF Step Size
Frequency Stability
Power Output
Power Step Size
Power Output Accuracy
Power Output Stability
Carrier Mute
Spurious:
Output Impedance
Return Loss

Phase Noise

50 to 180 MHz (70/140 MHz)
950 to 2050 MHz L-Band
1 Hz
1 ppm
0 to -25 dBm
0.1 dB± 1.0 dB
± 0.5 dB
-55 dB-55 dBc, In-band-45 dBc, Out-of-band
75 Ohm (70/140 MHz),
50 Ohm (L-Band)
20 dB (70/140 MHz)
14 dB (L-Band)
1 kHz-73 dBc
10 kHz-83 dBc
100 kHz -100 dBc
1 MHz-120 dBc

External Reference

BNC female (70/140 MHz),SMA female (L-Band)
SMA female
1, 2, 5, 10 MHz better than ±1 ppm,
1.5 to 10 Vp-p, 50 Ohms

MetaCarrier Identification

DVB-CID ETSI TS 103 129 Compliant

Output Connector
IF Monitor

Baseband (DVB-S) Per ETSI EN 301 210
Data Rate
Symbol Rate
Inner FEC Code
Code Rates
Outer CodeInterleaving
Data Scrambling
Terrestrial Framing

1 to 238 in 1 bps steps
1-68 Msps maximum
PTCM (8PSK, 16-QAM), QPSK (Viterbi)
QPSK 1/2, 2/3, 3/4, 5/6, 7/88PSK 2/3, 5/6, 8/9
16-QAM 3/4, 7/8
Reed-Solomon (204, 188, T=8)
Convolutional, I =12
Per EN 300-421
204, 188, noneBaseband (DVB-S2) PER ETSI EN 302 307

Configuration Series DVB-S

Modulation Types
DVB Modes

Series 100
Series 200
Series 300:
Series 400

Data Rate
Symbol Rate
Terrestrial Framing
Block Size
FEC CodeInterleaver

Code Rates

Baseband Roll-Off
Terrestrial Input
Clock Accuracy

QPSK, 8PSK, 16APSK, 32APSK
CCM, ACM, VCM
1 to 80 Mbps in 1 bps steps (QPSK)
2 to 118 Mbps in 1 bps steps (8PSK)
2.6 to 160 Mbps in 1 bps steps (16APSK)
3.5 to 190 Mbps in 1 bps steps (32APSK)
1 to 45 Msps maximum
188 (1 Sync Byte, 187 payload bytes)
64800 bits, 16200 bits
BCH + LDPC
Block Interleaver, Per ETSI EN 302 307
QPSK:1/4,1/3, 2/5,1/2,3/5, 2/3, 3/4, 4/5, 5/6, 8/9,9/10
8PSK: 2/3, 3/4, 3/5, 5/6, 8/9, 9/10
16APSK: 2/3, 3/4, 4/5, 5/6, 8/9, 9/10
32APSK: 3/4, 4/5, 5/6, 8/9, 9/10
Square root raised cosine 0.20, 0.25, 0.35
Better than 400 ppm

Test Pattern

Internal 215-1 and 223-1
Pseudo-random number generator

Internal ClockSource Stability

10 ppmConfiguration Series DVB-S2
Series 100
Series 200
Series 300
Series 400
Series 500

AutoEQ Specifications
Demodulator Input (PIIC Card Receiver)
Input Frequency
Input Power
Input Impedance
Input Connector
Es/No

PurposeSerial RS-485 (remote) and RS-232 (germinal),
Ethernet 10/100Base-T (SNMP v1/v2 and Webbrowser)• Test modes• Inner code rate
• IF frequency• Modulation• IF output level• Rolloff• IF output on/off• Pilot symbols• Data rate
• Gold code seq• Symbol rate
• Terr framing• Clock polarity• Sat framing• Data polarity• Faults (current & latched Alarms)• Supply voltages

Parameters
Controlled

Parameters
Monitored

1 to 10 Msps, QPSK
1 to 45 Msps, QPSK
1 to 45 Msps, QPSK/8PSK
1 to 45 Msps, QPSK/8PSK/16APSK
1 to 45 Msps, QPSK/8PSK/16APSK/32APSK

950-1750 MHz-45 to -20 dBm
50 Ohm (optional 75 Ohm F)
SMA-F (optional F-type)
0 dB min.

LNB DC Inject

Monitor & Control
Interface

1 - 10 Msps, QPSK
1 - 45 Msps, QPSK
1 - 45 Msps, QPSK/8PSK
1 - 68 Msps, QPSK/8PSK/16-QAM

Input Connector
Input Voltage
Input Current

Used to diplex DC power onto RF RX connector
PP3-002A 5.5mm x 2.1mm x 9.5mm in-line DC
power plug
28 Volts maximum
0.5 Amps maximum

DM240XR Monitor and Control
Equalizer
RX IF
EQ Calibration
EQ Receiver
EQ Select
EQ Rename
EQ Delete
EQ Restore

Enabled, disabled
950-1750 MHz
Reference acquire, calibration
Local, remote
1-32 coefficient sets
1-32 coefficient sets
1-32 coefficient sets
Entire AutoEQ table

Optional Interfaces
SerialParallel
Ethernet
AutoEQ

DVB-ASI, G703, HSSI
RS-422 (M2P, DVB), LVDS (M2P, DVB), DSS
100/1000Base-T (PRO-MPEG COP3/R2 & BRIDGE Mode)
Amplitude and group delay equalization

Physical & Environmental
Prime PowerOperating Temperature
Operating Humidity
Storage Temperature
Storage Humidity
WeightDimensions (1RU)(height x width x depth)

100 - 240 VAC, 50 - 60 Hz,
40 W maximum
0 to 50°C
Up to 95%, non-condensing-20 to 70°C
Up to 99%, non-condensing
10 lbs (4 kg)
1.75” x 19” x 17”
4.45 x 48.3 x 43.2 (cm)2114 West 7th Street, Tempe, Arizona 85281 USA
Voice: +1.480.333.2200 ● Fax: +1.480.333.2540 ● Email: sales@comtechefdata.com
See all of Comtech EF Data’s Patents and Patents Pending at http://patents.comtechefdata.com
Comtech EF Data reserves the right to change specifications of products described in this document at any time without notice and without obligation to notify any person of such changes. Information inthis document may differ from that published in other Comtech EF Data documents. Refer to the website or contact Customer Service for the latest released product information© 2013 Comtech EF Data
ds-dm240xr.docx
10/3/2013