Comtech EF Data DD240XR User Manual

DD240XR

High-Speed

Digital Demodulator

Installation and Operation Manual

MN-DD240XR

Revision E

Comtech EF Data • 2114 W 7

th

St. • Tempe, AZ 85281 • [phone] • Fax: [phone] • www.comtechefdata.com

Warranty Policy DD240 High-Speed Digital Video Demodulator

2

Warranty Policy DD240XR High-Speed Digital Demodulator

WP

Warranty Policy

Comtech EF Data products are warranted against defects in material and workmanship for a period of two
years from the date of shipment. During the warranty period, Comtech EF Data will, at its option, repair or
replace products that prove to be defective.

For equipment under warranty, the owner is responsible for freight to Comtech EF Data and all related
customs, taxes, tariffs, insurance, etc. Comtech EF Data is responsible for the freight charges only for
return of the equipment from the factory to the owner. Comtech EF Data will return the equipment by the
same method (i.e., Air, Express, Surface) as the equipment was sent to Comtech EF Data.

All equipment returned for warranty repair must have a valid RMA number issued prior to return and be
marked clearly on the return packaging. Comtech EF Data strongly recommends all equipment be returned
in its original packaging.

Comtech EF Data Corporation’s obligations under this warranty are limited to repair or replacement of failed
parts, and the return shipment to the buyer of the repaired or replaced parts.

Limitations of Warranty

The warranty does not apply to any part of a product that has been installed, altered, repaired, or misused
in any way that, in the opinion of Comtech EF Data Corporation, would affect the reliability or detracts from
the performance of any part of the product, or is damaged as the result of use in a way or with equipment
that had not been previously approved by Comtech EF Data Corporation.

The warranty does not apply to any product or parts thereof where the serial number or the serial number of
any of its parts has been altered, defaced, or removed.

The warranty does not cover damage or loss incurred in transportation of the product.
The warranty does not cover replacement or repair necessitated by loss or damage from any cause beyond

the control of Comtech EF Data Corporation.
The warranty does not cover any labor involved in the removal and or reinstallation of warranted equipment

or parts on site, or any labor required to diagnose the necessity for repair or replacement.
The warranty excludes any responsibility by Comtech EF Data Corporation for incidental or consequential

damages arising from the use of the equipment or products, or for any inability to use them either separate
from or in combination with any other equipment or products.

A fixed charge established for each product will be imposed for all equipment returned for warranty repair
where Comtech EF Data Corporation cannot identify the cause of the reported failure.

Exclusive Remedies

Comtech EF Data Corporation’s warranty, as stated is in lieu of all other warranties, expressed, implied, or
statutory, including those of merchantability and fitness for a particular purpose. The buyer shall pass on to
any purchaser, lessee, or other user of Comtech EF Data Corporation’s products, the aforementioned
warranty, and shall indemnify and hold harmless Comtech EF Data Corporation from any claims or liability
of such purchaser, lessee, or user based upon allegations that the buyer, its agents, or employees have
made additional warranties or representations as to product preference or use.

The remedies provided herein are the buyer’s sole and exclusive remedies. Comtech EF Data shall not be
liable for any direct, indirect, special, incidental, or consequential damages, whether based on contract, tort,
or any other legal theory.

Warranty Repair Return Procedure

iii MN-DD240XR – Rev. E

DD240XR High-Speed Digital Video Demodulator Record of Revisions

Before a warranty repair can be accomplished, a Repair Authorization must be received. It is at this time
that Comtech EF Data will authorize the product or part to be returned to the Comtech EF Data facility or if
field repair will be accomplished. The Repair Authorization may be requested in writing or by calling:

Comtech EF Data Corporation

2114 W 7th Street.
Tempe, Arizona 85281 (USA)
ATTN: Customer Support
Phone: [phone]
Fax: [phone]

Any product returned to Comtech EF Data for examination must be sent prepaid via the means of
transportation indicated as acceptable to Comtech EF Data. Return Authorization Number must be clearly
marked on the shipping label. Returned products or parts should be carefully packaged in the original
container, if possible, and unless otherwise indicated, shipped to the above address.

Non-Warranty Repair

When a product is returned for any reason, Customer and its shipping agency shall be responsible for all
damage resulting from improper packing and handling, and for loss in transit, not withstanding any defect or
nonconformity in the product. By returning a product, the owner grants Comtech EF Data permission to
open and disassemble the product as required for evaluation. In all cases, Comtech EF Data has sole
responsibility for determining the cause and nature of failure, and Comtech EF Data’s determination with
regard thereto shall be final.

MN-DD240XR – Rev. E iv

DD240XR High-Speed Digital Demodulator Preface

P

Preface

This manual provides installation and operation information for the Radyne DD240XR Universal
Satellite Modem. This is a technical document intended for use by engineers, technicians, and
operators responsible for the operation and maintenance of the DD240XR.

Conventions

Whenever the information within this manual instructs the operator to press a pushbutton switch
or keypad key on the Front Panel, the pushbutton or key label will be shown enclosed in "less
than" (<) and "greater than" (>) brackets. For example, the Reset Alarms Pushbutton will be
shown as <RESET ALARMS>, while a command that calls for the entry of a ‘7’ followed by
‘ENTER’ Key will be represented as <7,ENTER>.

Cautions and Warnings

A caution icon indicates a hazardous situation that if not avoided, may result in minor or moderate
injury. Caution may also be used to indicate other unsafe practices or risks of property damage.

A warning icon indicates a potentially hazardous situation that if not avoided, could result in death
or serious injury.

A note icon identifies information for the proper operation of your equipment, including helpful
hints, shortcuts, or important reminders.

MN-DD240XR – Rev. E v

Preface DD240XR High-Speed Digital Demodulator

Revision

Level

Date

Reason for Change

Trademarks

Product names mentioned in this manual may be trademarks or registered trademarks of their
respective companies and are hereby acknowledged.

Copyright

2009, Comtech EF Data This manual is proprietary to Comtech EF Data and is intended for the
exclusive use of Comtech EF Data’s customers. No part of this document may in whole or in part,
be copied, reproduced, distributed, translated or reduced to any electronic or magnetic storage
medium without the express written consent of a duly authorized officer of Comtech EF Data

Disclaimer

This manual has been thoroughly reviewed for accuracy. All statements, technical information,
and recommendations contained herein and in any guides or related documents are believed
reliable, but the accuracy and completeness thereof are not guaranteed or warranted, and they
are not intended to be, nor should they be understood to be, representations or warranties
concerning the products described. Comtech EF Data assumes no responsibility for use of any
circuitry other than the circuitry employed in Comtech EF Data systems and equipment.
Furthermore, since Comtech EF Data is constantly improving its products, reserves the right to
make changes in the specifications of products, or in this manual at any time without notice and
without obligation to notify any person of such changes.

Record of Revisions

1.0

1.1

1.2 7/24/07 Correct Front Panel Interface Options

1.3 11/22/07 Expanded DVBS2 Rates: 2 to 45Msps

D 2/19/09

E 3/13/09 Removed FEC Rates that product does not support

4-12-06 Initial Release

11/10/06 Add DVBS2 BER info to manual Section 7.11.

Updated to Comtech. Corrected Inner Code Rates for DVB-S2-CCM for
QPSK

Comments or Suggestions Concerning this Ma nual

Comments or suggestions regarding the content and design of this manual are appreciated.
To submit comments, please contact the Comtech EF Data Corporation Customer Service
Department.

vi MN-DD240XR – Rev. E

DD240XR High-Speed Digital Demodulator Table of Contents

ToC

Table of Contents

Section 1 - Introduction ............................................................................................. 1-1

1.0 Description ______________________________________________________ 1-1

Section 2 - Installation ............................................................................................... 2-1

2.0 Installation Requirements ___________________________________________ 2-1

2.1 Unpacking _______________________________________________________ 2-2

2.2 Removal and Assembly ____________________________________________ 2-2

2.3 Mounting Considerations ___________________________________________ 2-2

2.4 Demodulator Checkout _____________________________________________ 2-3

2.4.1 Initial Power-Up _________________________________________________ 2-3

Section 3 - Theory of Operation ................................................................................ 3-1

3.0 Theory of Operation _______________________________________________ 3-1

Section 4 - User Interfaces ........................................................................................ 4-1

4.0 User Interfaces ___________________________________________________ 4-1

4.1 Front Panel User Interface __________________________________________ 4-1

4.1.1 Front Panel LCD Display __________________________________________ 4-2

4.1.2 Cursor Control Arrows ____________________________________________ 4-2

4.1.3 Front Panel Keypad ______________________________________________ 4-2

4.1.4 Front Panel LED Indicators ________________________________________ 4-3

4.1.5 Parameter Setup ________________________________________________ 4-3

4.2 Front Panel Control Screen Menus ____________________________________ 4-5

4.2.1 Main Menus ____________________________________________________ 4-5

4.2.2 Demodulator Menu Options and Parameters __________________________ 4-5

4.2.3 Interface Menu Options and Paramet er s ______________________________ 4-7

4.2.4 Monitor Menu Options and Parameters ______________________________ 4-12

4.2.5 Alarms Menu Options and Parameters ______________________________ 4-14

4.2.6 System Menu Options and Parameters ______________________________ 4-19

4.2.7 Test Menu Options and Parameter s ________________________________ 4-26

4.3 Host Computer Remote Communications _____________________________ 4-28

MN-DD240XR – Rev. E vii

Table of Contents DD240XR High-Speed Digital Demodulator

4.3.1 Protocol Structure ______________________________________________ 4-28

4.3.2 Protocol Wrapper _______________________________________________ 4-28

4.3.3 Frame Description and Bus Handshaking ____________________________ 4-30

4.3.4 Global Response Operational Codes _______________________________ 4-31

4.3.5 Collision Avoidance _____________________________________________ 4-31

4.3.6 Software Compatibility ___________________________________________ 4-32

4.3.7 RLLP Summary ________________________________________________ 4-33

4.3.8 Remote Port Packet Structure _____________________________________ 4-35

4.3.9 DD240XR Opcode Command Set __________________________________ 4-35

4.3.9.1 Demodulator Command Set _____________________________________ 4-36

4.3.10 Detailed Command Descriptions __________________________________ 4-37

4.4 Ethernet Port User Inter face ________________________________________ 4-47

4.5 DD240XR Management Information Base ( MIB) ________________________ 4-48

4.6 Terminal Port User Interface ________________________________________ 4-67

Section 5 - Electrical Int erfaces ................................................................................ 5-1

5.0 DD240XR Connections _____________________________________________ 5-1

5.1 AC Power _______________________________________________________ 5-2

5.2 PCMCIA Interface (J1) _____________________________________________ 5-2

5.2.1 Feature Upgrade ________________________________________________ 5-2

5.2.2 Firmware Update ________________________________________________ 5-3

5.2.3 Custom Configurat ion Run Card ____________________________________ 5-3

5.3 Ethernet Interf ace ( J2 ) _____________________________________________ 5-3

5.4 Alarm Port (J3) ___________________________________________________ 5-3

5.5 Remote Port (J4)__________________________________________________ 5-4

5.6 Terminal Port (J5) _________________________________________________ 5-4

5.7 RX RF IN (L-Band) (J6) ____________________________________________ 5-4

5.8 RX IF IN (J7) _____________________________________________________ 5-4

5.9 J8 Ports _________________________________________________________ 5-5

5.9.1 PARALLEL (ASI/DVB SPI or ASI/M2P Interfaces) ______________________ 5-5

5.9.2 EXT CLK (HSSI and G.703 Int er faces Only) ___________________________ 5-6

5.9.3 PARALLEL/LVDS (ASI/M2P Interface Only) ___________________________ 5-6

5.10 HSSI Interface (J9) (HSSI Interface Only) _____________________________ 5-6

5.11 TX CLK (J10) (HSSI Inter face Only) __________________________________ 5-6

5.12 J12 Ports _______________________________________________________ 5-6

viii MN-DD240XR – Rev. E

DD240XR High-Speed Digital Demodulator Table of Contents

5.12.1 ASI (ASI/DVB SPI and ASI/M2P Interfaces O nly) ______________________ 5-6

5.12.2 G.703 OUT (G. 703 I nterface Only) _________________________________ 5-6

5.13 ECL Interface ___________________________________________________ 5-7

5.13.1 ECL Balanced (J8) _____________________________________________ 5-7

5.13.2 ECL Unbalanced Data (J12) ______________________________________ 5-7

5.13.3 ECL Unbalanced Clock (J13) ______________________________________ 5-7

5.14 Ethernet Interf ace GiGi (J8) ________________________________________ 5-8

5.14.1 Gigi Ethernet Data Int er face, Additional Menus ________________________ 5-8

Section 6 - Maintenance ............................................................................................ 6-1

6.0 Periodic Maintenance ______________________________________________ 6-1

Section 7 - Technical Specifications ........................................................................ 7-1

7.0 Introduction ______________________________________________________ 7-1

7.1 L-Band IF Specification _____________________________________________ 7-1

7.2 Optional 70/140 MHz Specification (includes L-Band) _____________________ 7-1

7.3 Baseband Specification ____________________________________________ 7-1

7.3.1 DVB-S2-BS-NBC ________________________________________________ 7-2

7.4 Configuration Series DVB-S ________________________________________ 7-2

7.5 Interface Types Available ___________________________________________ 7-3

7.6 Monitor and Control _______________________________________________ 7-3

7.7 Environmental ____________________________________________________ 7-4

7.8 Physical _________________________________________________________ 7-4

7.9 Options _________________________________________________________ 7-4

7.10 BER Performance (DVB-S)_________________________________________ 7-4

7.11 BER Performance (DVB-S2) Per EN 302-307 V1.1. 1 ____________________ 7-5

7.12 Data Rates (DVB-S) ______________________________________________ 7-5

7.13 Data Rates (DVB-S2) _____________________________________________ 7-7

Glossary ..................................................................................................................... G-1

MN-DD240XR – Rev. E ix

DD240XR High-Speed Digital Demodulator

x MN-DD240XR – Rev. E

DD240XR High-Speed Digital Demodulator Introduction

1

Introduction

1.0 Description

Radyne Corporation’s DD240XR family of High-Speed Demodulators is the ideal choice to meet
the exacting standards of high data-rate Video, Internet and Fiber Restoral Satellite Applications.
The DD240XR supports both DVB-S and DVB-S2 Broadcast Services. The DVB-S supports
QPSK, 8PSK and 16QAM applications with symbol rates up to 45 Msps and the DVB-S2 supports
QPSK, 8PSK and 16APSK applications with symbol rates of 2 to 45 Msps. With a variety of data
interfaces available, the DD240XR is configurable to meet high-speed satellite applications.

The powerful new onboard Monitor and Control (M&C) processor has the unique capability to
download firmware and enhance features from a field-changeable PCMCIA card. Offering
unprecedented flexibility, this feature represents a new level of Radyne Corporation’s outstanding
Customer Support. Additionally, features are added to the installed equipment base with extreme
ease, allowing the equipment to expand with changes in service while lowering initial installation
budgets.

The Demodulator offers a frequency-agile IF Input from 50 to 180 MHz (70/140), or 950 to 2150
MHz (L-Band) in 1Hz steps. Variable data rates for DVB-S (188 Mode) are from 2 Mbps to 145
Mbps and variable rates for DVB-S2 are from 1 Mbps to 160 Mbps.

Additional features include the choice of remotely interfacing through one of three onboard
connections: 10 BaseT/100 Base-T Ethernet, RS-485, or RS-232. The familiar Radyne Front
Panel (Figure 1-1) offers push-button control of all features and a backlit LCD display. Menus are
specifically designed for ease of use and quick online operation as well as changes in all
modulator configurations.

An optional 1:1 Redundancy Control Switch (RCS11) is available to provide the DD240XR with
superior system reliability.

Figure 1-1. DD240XR

MN-DD240XR – Rev. E 1-1

Introduction DD240XR High-Speed Digital Demodulator

1-2 MN-DD240XR – Rev. E

DD240XR High-Speed Digital Demodulator Installation

2

Installation

2.0 Installation Requirements

The DD240XR can be installed within any standard 19-inch equipment cabinet or rack, and
requires one rack unit (RU) mounting space (1.75 inches) vertically and 17 inches of depth.
Including cabling, a minimum of 20-inches of rack depth is required. The rear panel of the DD240
is designed to have power enter from the left and IF cabling enter from the right when viewed from
the rear of the unit. Data and control cabling can enter from either side although they are closer to
the center. The unit can be placed on a table or suitable surface if required.

There are no user-serviceable parts or configuration settings located inside
the DD240XR
power supply module. DO NOT open the DD240XR
circumstances.

Before initially applying power to the unit, it is a good idea to disconnect
the transmit output from the operating ground station equipment. This is
especially true if the current DD240XR configuration settings are unknown,
where incorrect setting could disrupt exis ting communications traffic.

Earth connection is essential before connecting power to the DD240XR due
to high leakage curr ent.

The DD240XR contains a Lithium Battery. DANGER OF EXPLOSION
if the battery is incorrectly replaced. Replace only with the same or
equivalent type recommended by the manufacturer. Dispose of used
batteries in accordance with manufacturer's instructions.

chassis. There is a potential shock hazard in ternally at the

chassis under any

exists

MN-DD240XR – Rev. E 2-1

Installation DD240XR High-Speed Digital Demodulator

2.1 Unpacking

The DD240XR Demodulator was carefully packaged to avoid damage and should arrive complete
with the following items for proper installation:

 DD240XR Unit
 PCMCIA Card (May be installed, depending upon configuration. If no card is

installed, the unit has been factory configured)

 Power Cord, 6 foot with Applicable AC Connector
 Installation and Operation Manual.

2.2 Removal and Assembly

Carefully unpack the unit and ensure that all of the above items are in the carton. If the Prime AC
power available at the installation site requires a different power cord/AC connector, then
arrangements to receive the proper device will be necessary before proceeding with the
installation.

The DD240XR modulator is shipped fully assembled. It does not require removal of the covers for
any purpose in installation. The only replaceable assembly in the unit is the data interface and is
not intended to be accomplished in the field. If the AC power connector is the wrong type for the
installation, either the cable or the power connector should be replaced. The power supply itself is
designed for universal application using from 100 to 240 VAC, 50 to 60 Hz, < 40 W.

2.3 Mounting Considerations

When mounted in an equipment rack, adequate ventilation must be provided. The ambient
temperature in the rack should be between 10° and 35° C, and held constant for best equipment

operation. The air available to the rack should be clean and relatively dry. The DD240XR units
may be stacked one on top of the other up to a maximum of 10 consecutive units before providing
a 1 RU space for airflow.

Do not mount the DD240XR in an unprotected outdoor location where there is direct contact with
rain, snow, wind or sun. The DD240XR is designed for indoor applications only.

The only tools required for rack mounting the DD240XR
an appropriate screwdriver. Rack mount brackets are an integral part of the cast front bezel of the
unit and are not removable.

Shielded cables with the shield terminated to the conductive back shells are required in order to
meet EMC directives. Cables with insulation flammability ratings of 94 VO or better are required
in order to meet low voltage directives.

Earth connection is essential before connecting power to the DD240XR due to High Leakage
Current.

is a set of four rack-mounting screws and

2-2 MN-DD240XR – Rev. E

DD240XR High-Speed Digital Demodulator Installation

2.4 Demodulator Checkout

The following descriptions assume that the DD240XR is installed in a suitable location with prime
AC power and supporting equipment available.

2.4.1 Initial Power-Up

Before initial power up of the DD240XR, it is a good idea to disconnect
the transmit output from the operating ground station equipment. This is
especially true if the current demodulator configuration settings are
unknown, where incorrect setting could disrupt existing communications
traffic. New units from the factory are normally shipped in a default
configuration which includes setting the transmit carrier off.

Turn the unit ‘ON’ by placing the rear panel switch (above the power entry connector) to the ‘ON’
position. Upon initial and subsequent power-ups, the DD240XR microprocessor will test itself and
several of its components before beginning its main Monitor/Control program. These power-up
diagnostics show no results if successful. If a failure is detected, the Fault LED is illuminated.

The initial field checkout of the DD240XR can be accomplished from the Front Panel, Terminal
Port, Remote Port, or Ethernet Port.

MN-DD240XR – Rev. E 2-3

Installation DD240XR High-Speed Digital Demodulator

2-4 MN-DD240XR – Rev. E

DD240XR High-Speed Digital Demodulator Operation

3

Theory of Operation

3.0 Theory of Operation

The basic theory of operation for each platform is similar. The DD240XR is capable of supporting
L-band from 950-2150 MHz and can be upgraded to include IF frequencies of 50-180 MHz in the
same package. If the unit is configured to receive analog signal in the IF band of 50-180 MHz, the
signal is converted to L-band. The L-band signal is then tuned and digitally demodulated. The
incoming I&Q symbols are then filtered decoded, and mapped to data bits. The network
specification selected will determine if the data stream supports DVB-S or DVB-S2 formats.

The DVB-S Network specification complies with both EN300-421 and EN301-210 ETSI
specifications. EN300-421 supports QPSK demodulation and EN301-210 supports higher
demodulation rates of 8PSK and 16QAM. The resulting data stream is FEC decoded by the
Viterbi (K=7) inner convolutional/trellis decoder, de-interleaved and further FEC decoded by the
outer Reed Solomon 204/188 decoder.

The DVB-S2 Network specification complies with the next generation DVB open standard
supported by EN302-307. At the core of this standard is a powerful Bose-Chaudhuri­Hocquenghem BCH decoding and concatenated Low-Density Parity Check (LDPC). The
DD240XR only supports normative features identified by the DVB-S2 Broadcast services. The
Broadcast Services mode of operation supports Constant Coding and modulation (CCM) system
and single transport streams. Operating in this mode allow for a variety of FEC rates to be used
with QPSK, 8PSK and 16APSK modulation schemes.

The decoded data is then sent through a deframer to provide terrestrial data that is either
unframed, 188 byte DVB format or 204 byte DVB format. Based on the type of terrestrial interface
installed, the data stream is re-clocked through an optional Doppler buffer, serialized and
converted through the appropriate physical layer interface. A functional block diagram is shown in
Figure 3-1.

Figure 3-1. Functional Bl o ck Diagram

MN-DD240XR – Rev. E 3-1

Operation DD240XR High-Speed Digital Demodulator

3-2 MN-DD240XR – Rev. E

DD240XR High-Speed Digital Demodulator User Interfaces

4

1 2 3

4

User Interfaces

4.0 User Interfaces

There are four User Interfaces available for the DD240 family of products. These are:

 Front Panel
 Remote Port
 Ethernet Port
 Terminal

4.1 Front Panel User Interface

The Front Panel of the DD240XR allows for complete control and monitor of all DD240XR
parameters and functions via a keypad, LCD display and status LEDs.

The Front Panel layout is shown in Figure 4−1, showing the location and labeling of the Front
Panel. The Front Panel is divided into four functional areas: the LCD Front Panel Display, the
Cursor Control Arrows, the Numeric Keypad and the LED Indicators, each described below in
Table 4-1.

Figure 4-1. DD240XR Front Panel

Table 4-1.

Item Number Description Function

1 Front Panel LCD Display Displays DD240XR Operating

Parameters and Configuration Data.

2 Cursor Control Arrows Controls the up, down, right and left

motion of the cursor in the LCD Display
Window.

3 Numeric Keypad Allows the entry of numeric data and

Clear and Enter Function Keys.

4 Front Panel LED Indicators See Section 4.1.4 below for an itemized

description of these LEDs.

TM115 – Rev. 1.2 4-1

User Interfaces DD240XR High-Speed Digital Demodulator

↑ ↓ ← →

←

→

4.1.1 Front Panel LCD Display

The Front Panel display is a 2 line by 16-character LCD display. The display is lighted and the
brightness can be set to increase when the Front Panel is currently in use. The LCD display
automatically dims after a period of inactivity. The display has two distinct areas showing current
information. The upper area shows the current parameter being monitored, such as ‘Frequency’
or ‘Data Rate’. The lower line shows the current value of that parameter. The LCD display is a
single entry window into the large matrix of parameters that can be monitored and set from the
Front Panel.

4.1.2 Cursor Control Arrows

The ‘Cursor’ or ‘Arrow’ Keys (

↑), (↓), (→), (←), are used to navigate the parameter currently being

monitored or controlled. Table 4-2 describes the key functions available at the Front Panel.

Table 4-2.

Edit Mode Key Functions (Front P anel Only)

Parameter

Type

Fixed Point

Decimal

Unsigned

Hexadecimal

Enumerated N/A Previous

Date/ Time Changes Digit

IP Address Changes Digit Increments

Text Strings Changes

0 – 9

Changes Digit Toggles ±

Changes Digit Increments

Character

(If Signed)

Digit Value

Value in

List
N/A N/A Moves

Digit Value

Increments

Character

Value

Toggles ±

(If Signed)

Decrements

Digit Value

Next

Value in

List

Decrements

Digit Value

Decrements

Character

Value

Moves

Cursor 1

Position

Left

Moves

Cursor 1

Position

Left
N/A N/A N/A N/A

Cursor 1

Position

Left

Moves

Cursor 1

Position

Left

Moves

Cursor 1

Position

Left

Moves

Cursor 1

Position

Right

Moves

Cursor 1

Position

Right

Moves

Cursor 1

Position

Right

Moves

Cursor 1

Position

Right

Moves

Cursor 1

Position

Right

‘Clear’ &

N/A N/A

N/A N/A

N/A N/A

N/A N/A

Clears to

Left of

Cursor

Inclusive

Clears to

Inclusive

‘Clear’ &

Right of

Cursor

4.1.3 Front Panel Keypad

The Front Panel Keypad consists of a 10-key numeric entry with 2 additional keys for the ‘Enter’
and ‘Clear’ functions.

4-2 MN-DD240XR – Rev. E

DD240XR High-Speed Digital Demodulator User Interfaces

4.1.4 Front Panel LED I ndi cators

Eight LEDs on the DD240XR Front Panel (Refer to Table 4-3) indicate the status of the
DD240XRs operation. The LED colors maintain a consistent meaning. Green signifies that the
indication is appropriate for normal operation. Yellow means that there is a condition not proper
for normal operation, and Red indicates a fault condition that will result in lost communications.

Table 4-3.

LED Color Function

Carrier Lock Green Indicates the DD240XR Demodulator and Decoder are

locked.
Major Alarm Red Indicates that the receive direction has failed, losing traffic.
Minor Alarm Yellow Indicates a receive warning condition exists.

Test Mode Yellow Indicates the demodulator is involved in current test mode

activity.

Power Green Indicates the DD240XR unit is currently powered up.

Fault Red Indicates a common fault exists such as power out of spec.

Event Yellow Indicates that the events have been logged into the event

buffer.

Remote Green Indicates that the unit is set to respond to the remote control

or terminal input.

4.1.5 Parameter Setup

The four arrow keys (
menu tree and select the parameter to be set. After arriving at a parameter that needs to be
modified, depress <ENTER>. The first space of the modifiable parameter highlights (blinks) and
is ready for a new parameter to be entered. After entering the new parameter using the keypad
(Refer to Figure 4-3), depress <ENTER> to lock in the new parameter. If a change needs to be
made prior to pressing <ENTER>, depress <CLEAR> and the display defaults back to the original
parameter. Depress <ENTER> again and re-enter the new parameters followed by <ENTER>.

Following a valid input, the DD240XR will place the new setting into the nonvolatile SRAM making
it available immediately and available the next time the unit is powered-up.

↑), (↓), (→), (←), to the right of the LCD display are used to navigate the

MN-DD240XR – Rev. E 4-3

User Interfaces DD240XR High-Speed Digital Demodulator

Figure 4-2. DD240XR Main Programming Menu

4-4 MN-DD240XR – Rev. E

DD240XR High-Speed Digital Demodulator User Interfaces

Note: If at any time the use r wishes to abort the changes being made, depress <CLEAR>
to begin again.

Figure 4-3. Entering New Parameters

4.2 Front Panel Control Scre en Menus

The DD240XR Front Panel Control Screens are broken down into sections under several Main
Menus.

4.2.1 Main Menus

Demodulator
Interface
Monitor
Alarms
System
Test

4.2.2 Demodulator Menu Options and Paramete r s

NETWORK SPEC: {DVBS, DVB-S2-BS-NBC}
FREQUENCY (MHz): {NNNN.NNNNNN}

Carrier Frequency – Enter in 1 Hz increments where

NNNN.NNNNNN is the frequency in MHz.

Select a carrier with 1 Hz steps.

MODULATION: DVB-S: {8PSK, 16QAM},
DVB-S2 {QPSK, 8PSK, 16APSK}

Displays the Modulation Type

INNER FEC RATE: DVB-S QPSK: 1/2, 2/3, 3/4, 5/6, 7/8
DVB-S 8PSK: 2/3, 5/6, 8/9
DVB-S 16QAM: 3/4, 7/8

DVB-S2 QPSK: 1/2, 2/3, 3/5, 3/4, 4/5, 5/6, 8/9, 9/10
DVB-S2 8PSK: 2/3, 3/5, 3/4, 5/6, 8/9, 9/10
DVB-S2 16APSK: 2/3, 3/4, 4/5, 5/6, 8/9, 9/10
Note: 9/10 only available with normal FEC frames

MN-DD240XR – Rev. E 4-5

User Interfaces DD240XR High-Speed Digital Demodulator

SAT FRAMING FECFRAME
Select NORMAL n_ldpc = 64,800 or
SHORT n_ldpc = 16,200

DATA RATE (bps): Terrestrial Data Rate:

Enter in 1 bps increments from 2,000,000 to 160,000,000

BPS.

SYMB RATE (sps): Output Symbol Rate:
Enter in 1 sps increments from 2,000,000 to 45,000,000

sps.

SPECTRUM: {AUTO DETECT}
This is the commanded spectrum detection. Select

NORMAL or INVERTED. This display is not user
selectable for DVBS 8PSK or 16QAM, where it is fixed
as AUTO DETECT.

ROLL OFF: DVB-S: {0.20, 0.35} for QPSK/8PSK/16QAM.

DVB-S2 {20, .25, .35} for QPSK/8PSK/16APSK

PILOT SYMBOLS: {ON, OFF}
Used to enable pilot symbol for DVB-S2 only

GOLD SEQ N: {012345}
Gold code sequence number for DVB-S2 only

LAST RATE CTRL: {SYMBOL RATE, DATA RATE, AUTO}

Indicates the rate (symbol or data) which is maintained

when associated parameters (i.e. Modulation, Inner FEC
Code Rate, Terr Framing) are changed. For example, if
the Last Rate Control is set to “Symbol Rate” and the
modulation is subsequently changed, the system will
attempt to maintain the same symbol rate by adjusting
the data rate. If the Last Rate Control is set to “Data
Rate” and the modulation is subsequently changed, the
system will attempt to maintain the same data rate by
adjusting the symbol rate.

4-6 MN-DD240XR – Rev. E

DD240XR High-Speed Digital Demodulator User Interfaces

The “Auto” Setting of Last Rate Control causes the last
explicitly changed rate (symbol or data) to be maintained
when associated parameters are changed. For
example, if the last rate control is set to “Auto” and the
Data Rate is subsequently explicitly changed, any
subsequent changes to Modulation or Inner FEC Rate
would cause the symbol rate to be adjusted in order to
maintain the Data Rate.

ACQ RANGE: {Variable in one Hz steps}
Acquisition Range – Allows the user to set the carrier

acquisition sweep range. Sweep rate range changes
based on Data rate and FEC rate.

LNB POWER: {ON, OFF}
Used to enable the LNB 18V DC Output to J6.

EBNO FLOOR (dB): {1, 15}
This screen is used for setting the level at which an

Eb/No Alarm should be indicated. This will occur when
the measured Eb/No value is less than the floor level and
an Event and Alarm will be generated.

4.2.3 Interface Menu Options and Parameters

INTERFACE TYPE: {ASI, Advanced ASI, HSSI, RS-442 Serial, M2P

Parallel, DVB Parallel, G.703 STS1, G.703.E3,
G.703.T3, ECL BAL/UNBAL, ETHERNET GIGE}

Allows the user to enter the Terrestrial Interface type.

Only the Interface types that are installed may be selected.

When a G.703 interface is selected the data rate and symbol rates are dictated by the

interface.

MN-DD240XR – Rev. E 4-7

User Interfaces DD240XR High-Speed Digital Demodulator

TERR FRAMING: {None, DVB 188, DVB 204}
Terrestrial Framing – Allows the user to choose framing

packet. None equals 187 framing.

When configured with an Ethernet Interface, TERR FRAMING is always 188 framing.

TERR STREAMING: {Byte Output, Pac ket Output}

Only applies when ASI interface is installed

DATA POLARITY: {NORMAL, INVERTED}

This allows user to invert the data.

CLOCK POLARITY: {NORMAL, INVERTED}
(This menu is not displayed when ASI interface is

installed)

Rx Clock Polarity – Allows the user to specify the clock

sense. This should be set the same as the Modulator
Source.

BUFF CLOCK SRC: {RX SAT, EXC DIR, EXC REF PLL}
When G703 Interface is installed the Buffer Clock

Source options are below are available. All other
interfaces may display RX SAT.

RX SAT - Clock is recovered from the satellite data

transmission.

EXC DIR – Clock is provided by an external clock

source. Not all terrestrial interfaces include a Doppler
buffer.

EXC REF PLL – Clock is provided by an external clock

source and passed through a phase locked loop. Not all
terrestrial interfaces include a Doppler buffer.

RX SAT Clock is the standard clock with most interfaces. External clocks are available

only if the interface i s buffer capable. If the interface is not buffer capable, the EXC

Options (BUFF CLK SRC, EXC REF CLOCK, RX BUFFER SIZE, and RX BUFFER RESET)

will not be displayed.

4-8 MN-DD240XR – Rev. E

DD240XR High-Speed Digital Demodulator User Interfaces

EXC REF CLOCK: {1.000, 1.544, 2.000, 2.048, 5.000, 6.312, 8.448, 10.000

MHz} (This menu not displayed when Ethernet
interface is installed)

Rx Reference Clock Rate

This menu allows the user to specify the reference clock

rate. The rates are the most commonly used and
include T1, E1, T2 and E2 references. Not all terrestrial
interfaces include a Doppler buffer.

RX BUFFER SIZE: Allows the user to specify the buffer depth. Enter in

1 msec increments from 00 to 64. A value of 0 will
disable, bypass, buffering and the demodulator will then
use the RX SAT as the clock source. Not all terrestrial
interfaces include a Doppler buffer.

TERR ETHERNET: This menu is displayed when Ethernet interface is

installed. This interface supports MPEG over IP traffic.
This menu can be configured to support Ethernet Bridge
option or PRO MPEG COP3 option. Each option
supports different menu structures. The following items
are available under the Terrestrial Ethernet menu:

PROG ETH FLASH: {PRESS CLEAR}

When Bridge option is selected, the PROG ETH FLASH
menu is the only menu displayed. The PROG ETH
FLASH allows the user to select the desired Ethernet
protocol option. The protocols supported by the
DD240XR are Ethernet Bridge or Pro MPEG COP 3. If
unit is configured for Bridge option, the user can activate
the PRO MPEG COP3 option by pressing the <Down
Arrow>. Once COP3 is reflected on the front panel,
press the <Clear> button to activate the option. The
front panel will display a sequence process indicating
that the flash is being Erased, Programmed, and
Verified. At the end of sequence the final status will be
displayed as either Successful or Unsuccessful.

THE FOLLOWING MENUS ARE DISPLAYED W HE N THE TERRESTRIAL ETHERNET

INTERFACE IS CONFIGURED FOR PRO MPEG COP 3.

TERR MAC ADDR: {0123456789AB}

This menu displays the MAC addresses of the Ethernet
Data Interface card. Entering any non-zero value in this
field will cause the EDI to use the entered value as its
MAC address.
Entering a value of all zeros will cause the Ethernet Data
Interface to revert back to its original MAC address.

MN-DD240XR – Rev. E 4-9

User Interfaces DD240XR High-Speed Digital Demodulator

could be the MAC address of the final destination or the MAC address of the first ro u ter

through which this data will pass. The Ethernet Data Interface will not output any data

MODE SELECTION:
UDP PACKETS: The Demodulator outputs seven MPEG

packets encapsulated in UDP datagram.

COP3 RTP: The Demodulator outputs seven MPEG

packets encapsulated in a COP3 compliant RTP
datagram.

COP3 RTP FEC: The Demodulator outputs COP3

compliant column FEC packets in addition to the RTP
datagram.

IP ADDR: {XXX.XXX.XXX.XXX}

This is the IP address to be used by the Ethernet Data
Interface. This will be the source IP address for all
Ethernet traffic generated by this interface.

UDP PORT: {XXXXX}

This is the source UDP port to be used by the Ethernet
Data Interface.

DEST IP ADDR: {XXX.XXX.XXX.XXX}
This is the destination IP address that the Ethernet Data

Interface will send all Ethernet data traffic to.

DEST UDP PORT: {XXXXX}
This is the destination UDP port that the Ethernet Data

Interface will send all MPEG traffic to.

Unicast Destination IP Addresses

When the destination address is a Unicast address

(000.000.000.000 thru 223.255.255.255) the Ethernet Data Interface will use an ARP

Request to determine the Destination MAC address to which the data will be sent. This

until it receives an ARP Reply to its ARP Request.

4-10 MN-DD240XR – Rev. E