Wegener DTV 720 User manual

DTV720
Transport Stream Multiplexer
User’s Manual

DTV 720 User’s Manual
800043-01 Rev. B 2 wegener.com
A proven world leader in digital video, audio & broadcast data systems,
WEGENER’s management system is certified to ISO 9001:2000.
Data, drawings, and other material contained herein are proprietary to Wegener
Communications, Inc., and may not be reproduced or duplicated in any form
without the prior written permission of Wegener Communications, Inc.
The information contained herein is subject to change without notice. Revi-
sions may be issued to advise of such changes and/or additions.
 2004 Wegener Communications, Inc. All rights reserved.
WEGENER, and DTV720 are trademarks of WEGENER Communications,
Inc. All other trademarks are the property of their respective owners.
Correspondence regarding this publication,
800043-01 Revision B
Second Edition: October 2004
should be forwarded to:
Wegener Communications, Inc.
Technology Park/Johns Creek
11350 Technology Circle
Duluth, GA 30097-1502
Phone: [phone]
Fax: [phone]
The Wegener DTV720 is approved under FCC Part 15B Class A, UL1950, and
CSA.

wegener.com 3 800043-01 Rev. B
Table of Contents
Chapter 1 General Information
1.1 Manual Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 DTV720 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Physical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3 DTV720 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 1Technical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.4 Safety Summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.5 Glossary of Terms and Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 2Glossary of Terms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Chapter 2 Installation
2.1 Unpacking and Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.2 Location and Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Rack Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.3 DTV720 Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Table 3DTV720 Connector Details . . . . . . . . . . . . . . . . . . . . . . . . 15
Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Terminal I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Chapter 3 Operation
3.1 Operation Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.2 Ethernet/Web Browser Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Directly Connected PC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 4DTV720 IP Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Table 5PC IP Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
LAN Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Using the Web Browser. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Control and Status Page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Stream Information Page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Unit Configuration Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Pidsets Config Page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Q&A/Help Page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.3 DTV720 Controls and Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Liquid-Crystal Display(LCD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Push Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Front-panel LED Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Table 6LED Indicator Descriptions. . . . . . . . . . . . . . . . . . . . . . . . 27
Rear-panel Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

DTV 720 User’s Manual
800043-01 Rev. B 4 wegener.com
3.4 Front-panel Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Home Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Alarms/Warnings Screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Clear Errored Seconds Screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Input Setup Screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Program Status Screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Front Panel Timeout Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
IP Setup Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Reset Unit Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Unit Shutdown. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
3.5 Initialization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Software Code Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Initialization Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Initialization Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
3.6 Transport Stream Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Input to Output Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
PSIP Structure and Program Selection . . . . . . . . . . . . . . . . . . . . . . . 36
IRT Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
3.7 Alarm and Warning System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Alarm Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Warning Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
3.8 Software Downloads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Chapter 4 Maintenance and Troubleshooting
4.1 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
4.2 General Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
No Functions at All . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Normal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
4.3 Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
ALARM: Input Missing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
ALARM: PAT or PMT Missing. . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
4.4 Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
WARNING: Unit Over-subscribed . . . . . . . . . . . . . . . . . . . . . . . . . . 45
4.5 Trouble with Browser Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Chapter 5 Customer Service
5.1 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
5.2 Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Index

wegener.com 5 800043-01 Rev. B
Chapter 1 General Information
1.1 Manual Overview
This manual provides instructions and reference information for the proper
installation and operation of the Wegener Model DTV720 Transport Stream
Multiplexer, referred to throughout the manual as the DTV720.
NOTE: User interface details in this manual are based on application software
version 100.
The manual is divided into the following chapters:
1 General Information - a description of your DTV720, its functions and
specifications, and a glossary of terms
2 Installation - procedures and information for the correct and safe instal-
lation of your DTV720.
3 Operation - instructions on starting and operating your DTV720
4 Maintenance and Troubleshooting - information on maintaining your
DTV720 and resolving possible operating difficulties
5 Customer Service - Our warranty and information on obtaining help
An Index of keywords is also provided to help you quickly locate needed
information.
Please E-mail any suggestions or comments concerning this manual to
[e-mail]. If you prefer to post them through the mail, please
send your comments to the address below. If you have substantial or complex
changes to recommend, our preference is that you copy the page(s) in question,
mark your changes on that copy, and fax or mail us the copy. We always
appreciate constructive criticism.
Our Address:
Attn: Manuals
Wegener Communications, Inc.
Technology Park / Johns Creek
11350 Technology Circle
Duluth, GA 30097-1502
Our Fax Number:[phone]

DTV 720 User’s Manual
800043-01 Rev. B 6 wegener.com
1.2 DTV720 Overview
The DTV720 Transport Stream Multiplexer (see Figure 1.1) receives up to two
input ASI MPEG transport streams and two ATSC 8VSB broadcast signals and
provides an output ASI stream (and optional DHEI stream) for connection to
cable system transmission equipment. Programs may be remapped or selected
for removal from the output stream. The transport stream that is output on the
DHEI connector is also available on the two ASI output BNC connectors.
Physical
Description The DTV720 is housed in a standard, rack-mountable chassis. Its front panel
provides a user interface through an LCD, eight LEDs, and six push buttons
(see section 3.3 DTV720 Controls and Indicators on page 26). The rear panel
holds the ports that allow connection to power, incoming signal, and peripheral
devices.
Figure 1.1 DTV720 Transport Stream Multiplexer
Features Your DTV720 has the following features:
• Two ATSC 8VSB RF inputs (F connector)
• Two ASI MPEG transport stream inputs – ASI-1 is active, ASI-2 may be
used for future expansion (BNC connectors)
• Two duplicate ASI MPEG Transport Stream outputs (BNC connectors),
• DHEI Output Module,
• Time re-stamping of PCR, PTS, and DTS information,
• User selection of input programs to be included in the output stream,
• User selection of output program numbers and audio mode,
• One Ethernet TCP/IP control interface (RJ-45 connector), and
• One asynchronous data input/output (DB-9 connector).

DTV 720 User’s Manual
wegener.com 7 800043-01 Rev. B
1.3 DTV720 Specifications
Table 1: Technical Specifications
Characteristic Specification
ENVIROMENTAL
Use Indoor
Altitude Up to 2000 meters
Temperature Range 0°C to +50°C Operating
-20°C to +70°C Storage
Cooling Internal fan
Relative Humidity (max.) 80% for temperatures up to 31°C decreasing linearly to 50% rel-
ative humidity at 40°C.
INPUT AC POWER
Voltage 90 to 132 Vac and 175 to 264 Vac
Frequency 50/60 Hz ± 2%
Power Consumption 43 Watt
MECHANICAL
Height 1 std. RU (1.75 inches nominal) (44.5 mm)
Width EIA std. 19-inch mounting (482.6 mm)
Depth 13.5 inches (342.9 mm)
Weight 10.5 lb (4.81 kg)
Expansion Module Slots 3 - each 2.5"W x 1.375"H x 7"D on rear panel
SERIAL PORT
Standard RS-232
Handshaking None
Service Software download
Baud Rates 115.2 kbps
Formatting 8 data-bits, 1 start, 1 stop-bit, no parity

DTV 720 User’s Manual
800043-01 Rev. B 8 wegener.com
1.4 Safety Summary
The DTV720 is designed for safe use with few special precautions required of
the user. The following items are basic precautions to use when installing and
working with your DTV720:
Do not open the DTV720’s chassis cover.
ETHERNET PORT
Physical Layer 10BaseT/100BaseT (twisted pair) on RJ-45 jack
Media Access and Link Layer Per IEEE 802.3 (Ethernet)
ALARM AND WARNING RELAYS
Alarm Function Contact closure for main power off, loss of expected input signal
Warning Function Contact closure for main power off, oversubscription, or input
stream with more than 1 error per 10 seconds
Type Form C, Normally Open and Normally Closed
Rating 30Vdc open circuit, 500 mA max current closed
EXPANSION MODULE SLOT Allowable expansion modules:
· DHEI transport stream output
· 8VSB tuner module
Table 1: Technical Specifications
Characteristic Specification

DTV 720 User’s Manual
wegener.com 9 800043-01 Rev. B
1.5 Glossary of Terms and Abbreviations
Table 2: Glossary of Terms
Term Definition
AC Alternating current
Alarm A condition or notification of a condition that prevents your DTV720 from performing
properly
Application Soft-
ware The main host software which sets up the unit hardware, runs the process of acquiring Transport Stream sources, sets up and monitors the multiplexing processes, monitors unit
operations, and provides interfaces with the network and local users.
ASI (or DVB-ASI) An “asynchronous” bit-serial physical interface for Transport Streams. Transmitting and
receiving functions are designed such that the time relationships between all packets and
their timing references are unchanged.
ATSC Advanced Television Systems Committee - sets standards for standard definition and high
definition television in the U.S. Sometimes used to mean the HDTV standards.
Boot loader Software residing in non-writable zone of flash which executes at unit reset.
Carrier An RF signal containing coded audio, video, and/or other data
DVB-ASI see ASI
EIA Electronic Industries Association
Ethernet The widely-used LAN technology specified by IEEE standard 802.3
Flash memory A memory dedicated to storing the unit’s software and an image of some hardware pro-
gramming code.
IEEE Institute of Electrical and Electronics Engineers
LAN Local area network. Your DTV720 may be connected to an Ethernet LAN.
LCD
Liquid crystal display. The front-panel text screen on your DTV720 is a liquid crystal display.
LED Light-emitting diode. The front-panel indicator lights on your DTV720 are LEDs.
Mbps, kbps Megabits per second or kilobits per second - units of data transport rate.
MPEG Moving Picture Experts Group - refers to the method of video compression established by
this group.
NVRAM Non-volatile memory. A memory dedicated to storing the unit’s setup parameters. This
memory retains its contents through power outages.
PAT Program Allocation Table. Master table which identifies all the Programs in the Transport
Stream. It associates Program numbers to the PIDs bearing the associated Program’s PMT.
PCR Program Clock Reference. Time-base signal used to synchronize transport stream data.

DTV 720 User’s Manual
800043-01 Rev. B 10 wegener.com
PID Packet Identifier. The unique Transport Stream packet identifier assigned to each constitu-
ent data stream within the Transport Stream. Also, in this document, “PID” is used to desig-
nate the stream itself.
PMT Program Map Table. Table for a given Program identifying all the PIDs for its PCR, video,
audio, and user data streams.
Program In the MPEG hierarchy, a grouping of related audio, video, or generic data PIDs sharing a
common PCR time base and (usually) sharing a common schedule. See PMT.
PSI Tables Program-Specific Information Tables. A group of information-bearing tables, each borne by
well-known PIDs, regularly transmitted in the Transport Stream. See also “PAT” and
“PMT”. Also, ISO 13818-1 gives a thorough description of these and other Tables.
PSIP Program and System Information Protocol - a method for transporting digital television sys-
tem information and electronic program guide data.
RAM Random access memory. A general term for all memory volatile memory types out of which
application software executes and into which its variables, state information, and messages
are stored. RAM is also used to designate the volatile storage used by the Transport Demux
and decompression devices.
RF Radio frequency
TMRA Maximum Recommended Ambient Temperature, the highest operating temperature for
which the unit is rated
Transport Stream
(or MPEG Trans-
port Stream)
A multiplex of several data streams, each of which is borne in Transport packets, 188-byte
blocks containing a sync word, header information (including a PID), and payload data.
This multiplex includes PSI data tables, Programs, and padding in the form of null packets.
Warning A condition or notification of a condition that may compromise the proper performance of
your DTV720
Table 2: Glossary of Terms
Term Definition

wegener.com 11 800043-01 Rev. B
Chapter 2 Installation
This chapter provides instructions on unpacking, mounting, and connecting
your DTV720 as well as connector information including detailed pinouts.
2.1 Unpacking and Inspection
Carefully unpack the unit and its ac power cord and inspect for obvious signs
of physical damage that might have occurred during shipment. Any damage
claims must be reported to the carrier immediately. Be sure to check the pack-
age contents carefully for important documents and materials.
NOTE: Please save the packing materials and original shipping containers in
case you must later return the unit for repair. Packing these units in other
containers in such a way that they are damaged will void your warranty.
2.2 Location and Mounting
The DTV720 should be located indoors and may be mounted in a standard,
19-inch equipment rack within one standard RU.
WARNING
This is a Class A product. In a domestic environment this product may cause
radio interference for which the user may need to take mitigating action.

DTV 720 User’s Manual
800043-01 Rev. B 12 wegener.com
DANGER
To avoid damage to this and other equipment, or personal injury, the following
items should be strictly observed.
Elevated Operating Ambient
When equipment is installed in a closed or multi-unit rack assembly, the
operating ambient of the rack environment may be greater than the room
ambient. Therefore, consideration should be given to the ambient air
temperature within the rack, and not just inside the room, when deciding if the
maximum recommended ambient operating temperature (TMRA) is being met
or exceeded.
Reduced Air Flow
Equipment should be installed such that airflow required for safe operation of
the equipment is not compromised.
Mechanical Loading
Mounting of the equipment in a rack should be such that a hazardous
condition is not produced by uneven loading. This unit is not very heavy, but
total rack loading must be considered. Also, do not rest any unsupported
equipment on your DTV720.
Circuit Overloading
Consideration should be given to the connection of the equipment to the
supply circuit and the effect that overloading of circuits could have on
overcurrent protection and supply wiring. Ensure that the total rack or breaker
power consumption does not exceed the limits of the ac branch circuit.
Appropriate consideration of equipment ratings should be used when
addressing this concern.
Reliable Earthing
Reliable earthing of rack-mounted equipment should be maintained. Particular
attention should be given to supply connections other than direct connections
to the branch circuit (use of power strips, chassis ground lugs, etc.).

DTV 720 User’s Manual
wegener.com 13 800043-01 Rev. B
Rack
Mounting Your DTV720 is sized to fit in an EIA-standard, 19-inch-wide equipment rack.
a) First install angle brackets or cross-supports capable of supporting both
the unit and its connecting cables. Screw or bolt the supports securely
to the equipment rack.
b) Place the DTV720 on its supports and use four anchor screws or bolts
and nuts to secure the unit’s front brackets to the rack.
c) Connect the chassis grounding screw to an earth ground before
connecting the power cord to the unit.
WARNING
The front brackets must be secured to the rack. If front brackets are left
unsecured, the unit may shift forward and fall from the rack during installation
or operation. Failure to secure the front brackets may result in personal injury
and/or damage to the equipment.
WARNING
Locate the DTV720 and its cables to avoid impacts, spills, and pulling cables
and to ensure sufficient air flow. Failure to locate the DTV720 in a proper
environment may result in damage to the equipment.

DTV 720 User’s Manual
800043-01 Rev. B 14 wegener.com
2.3 DTV720 Connections
Figure 2.1 DTV720 System Setup below shows placement of the DTV720 in a
typical cable headend. Figure 2.2 DTV720 Rear Panel illustrates details of the
DTV720’s rear panel.
Figure 2.1 DTV720 System Setup
Figure 2.2 DTV720 Rear Panel
Before applying power, make the following connections to your DTV720
(refer to Table 3 for connector details):
a) Connect the chassis grounding screw to an earth ground before
connecting the power cord to the unit.
b) Connect the 8VSB ATSC signal from your antenna to the RF IN port (1
and/or 2if present) and/or ASI input signals to the ASI IN 1 and ASI
IN 2 ports (3and 4).
c) Connect downstream transmission or monitoring equipment to the ASI
OUT 1 and ASI OUT 2 ports (5and 6) as desired.

DTV 720 User’s Manual
wegener.com 15 800043-01 Rev. B
d) Connect your LAN line to the DTV720’s Ethernet port (7).
e) If desired, connect the Relays port (9) to your equipment to provide
contact closures during alarms and warnings.
f) Connect the DHEI output connector (10, if present) to the cable headend
DHEI equipment using a 15-pin to 26-pin DHEI cable. Be sure to use the
correct cable depending upon whether you are connecting to the DHEI
Expansion Input or the DHEI Expansion Output connector.
g) Finally, connect the supplied ac power cord to the DTV720’s IEC
receptacle (11) and to a 90-to-132 Vac source.
Table 3: DTV720 Connector Details
Item Designation Connector Type Pin
Number Signal Name
1RF In 1 female type-F RF IN 1
2RF In 2 female type-F RF IN 2
3ASI In 1 female BNC ASI IN 1
4ASI In 2 female BNC ASI IN 2
5ASI Out 1 female BNC ASI OUT 1
6ASI Out 2 female BNC ASI OUT 2
7Ethernet LAN female RJ-45 1
2
3
4
5
6
7
8
EN OUT +
EN OUT -
EN IN +
NC
NC
EN IN -
NC
NC
8Serial Async I/O DB-9 1
2
3
4
5
6
7
8
9
DCD (+5V, 4.7 kΩ)
RxD (output)
TxD (input)
NC
GND
DSR (+5V, 4.7 kΩ)
NC
CTS (+5V, 4.7 kΩ)
RI (+5V, 33 Ω)

DTV 720 User’s Manual
800043-01 Rev. B 16 wegener.com
Ethernet An Ethernet 10BaseT/100BaseT port is included and is the primary user inter-
face using an HTML browser-based interface. The unit has an URL which is
assigned via the front panel. The “home” page is then accessed by users via the
Ethernet port. From this page, the desired channel selections may be performed
and status monitored.
Terminal I/O The Terminal serial port is configured to 115.2k, N, 8, 1. The Terminal device
is used for command and control of the DTV720. This I/O is a basic, VT100-
like emulation. User input text strings terminated in carriage-returns prompt all
I/O. The terminal should be set to local echo ON because the DTV720 only
echoes a carriage-return/linefeed and then a ‘>’ prompt after entry of a com-
mand-line terminated in carriage-return.
9Alarm/Warning
Relays male DB-9 1 2
3
4
5
6
7
8
9
Not used
Not used
WARNING COMMON
ALARM COMMON
GND
OPEN ON WARNING
OPEN ON ALARM
CLOSE ON WARNING
CLOSE ON ALARM
10 DHEI Out D subminiature 15-pin 1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
RESERVED
RESERVED
RESERVED
RESERVED
SIGND
SENSEOL
PSYNCO+
PDATAO+
PCLKO+
REFCLKO+
SENSEOR
PSYNCO-
PDATAO-
PCLKO-
REFCLKO-
11 115/230 Vac Power male IEC receptacle AC LINE IN
Table 3: DTV720 Connector Details
Item Designation Connector Type Pin
Number Signal Name

wegener.com 17 800043-01 Rev. B
Chapter 3 Operation
3.1 Operation Overview
This chapter contains detailed operating instructions for your DTV720. The
following sections address:
• Ethernet/Web Browser Control
• DTV720 Controls and Indicators
• Front-panel Operation
• Initialization
• Transport Stream Processing
• Alarm and Warning System
• Software Downloads
Local user control is from a LAN via RJ-45 Ethernet or the front-panel LCD/
keypad. All settings may be presumed to be retained through power cycling
unless otherwise specified. This means that they are still in effect through
resets, whether by power outage, commanded reset, or failure-recovery resets.
3.2 Ethernet/Web Browser Control
The DTV720’s primary user interface is from a web browser using the rear-
panel Ethernet LAN connection. An HTML script interface allows a user to
control and monitor the unit using a standard web browser. Each unit contains
a user-defined quad URL address, subnet mask, and gateway address (See
Table 4: DTV720 IP Setup).
There are two basic methods of using the Ethernet connection – with a directly
connected PC or with a PC connected through a LAN.
Directly
Connected PC
For control from a local PC, attach the DTV720’s Ethernet port to the Ethernet
network connector on the PC using a crossover RJ-45 cable (8 pins).
Before using this Ethernet connection, the appropriate IP address, netmask,
and gateway must be selected via the front-panel interface.

DTV 720 User’s Manual
800043-01 Rev. B 18 wegener.com
Perform the DTV720 IP Setup as shown in Table 4 and the PC IP Setup as
shown in Table 5:
LAN
Connection For LAN connection, attach the DTV720’s Ethernet port to the LAN using a
normal, straight-through, RJ-45 cable. Set the DTV720 IP Address, Netmask,
and Gateway as directed by your network administrator. Use any PC on the
LAN to connect to the DTV720 using the web browser instructions below.
NOTE: Each unit on the network must have a unique address.
Using the
Web Browser To begin DTV720 monitor and control functions from a PC or LAN connec-
tion:
a) Open the current internet browser of your choice from the local PC or
computer on the LAN attached to your DTV720.
b) Set the browser's address field to http://nnn.nnn.nnn.nnn where
nnn.nnn.nnn.nnn is the IP address of the unit to be controlled (set from
the DTV720’s front-panel, IP Address screen).
NOTE: For IP addresses which include subfields with leading zeros, you must
omit those zeros when entering the address in your browser. For example, IP
address 128.092.050.004 must be entered as 128.92.50.4.
The DTV720 Control and Status page will appear. You may select the Stream
Info, Unit Configuration, Pidsets Config, or Q&A/Help pages at any time by
clicking their respective tabs at the top of the screen.
Normally you will first select the Control & Status page to select the input, out-
put, control, and Compel characteristics. Use the Pidsets Config page to select
Table 4: DTV720 IP Setup
Parameter Setting
IP Address 172.016.100.001
Subnet Mask 255.255.000.000
Table 5: PC IP Setup
Parameter Setting
IP Address 172.016.100.020
Netmask 255.255.000.000
Gateway 000.000.000.000

DTV 720 User’s Manual
wegener.com 19 800043-01 Rev. B
programs to be included in the output, assign new program numbers if desired,
and select the audio to be included in each program’s output. Next, select the
Stream Info page to verify that input and output data are as desired
Finally, you may select the Unit Configuration screen to save the configura-
tion. If you have multiple configurations that you use from time to time, you
may now set them up using the same steps as above. After the initial setup, it
will be easy to select various stored configurations from the Unit Configura-
tion screen. The following paragraphs give a detailed description of each
screen.
Control and
Status Page The left side of this page is used for control selections and the right side gives
input and output status. The serial number of the DTV720 unit and the version
number of the application software installed in the unit are shown at the top of
the left side.
Control
The Inputs section (on the left side) allows setting of the two ASI inputs and
RF inputs if available. If the ASI inputs are used, select the Enable check box
and click the Set button for each one that is used. Similarly, select the check-
box for each RF input that is used, set the channel number, click the radio but-
ton to select either Broadcast or CATV, then click the Tune button. If the
optional, dual ASI Input Module is used rather than the RF Input Modules,
then set them up in the same manner as the included ASI Inputs.
The Outputs section allows the user to set the output data rate, enable output
PSIP data, enable the IRT Mode, and set the output TSID number. The output
data rate may be set to 19.39 Mbps, 26.97 Mbps, 38.81 Mbps, or to a custom
rate from 2.5 Mbps to 70 Mbps. The PSIP enable box allows PSIP data to be
included in the output stream. The IRT Mode box allows the user to enable or
disable functions needed for use in systems with the Motorola IRT product.
This is normally set to OFF. (Refer to IRT Mode on page 37 for more details.)
The output TSID number may be set to a four digit hexadecimal number. You
will normally use the TSID of the major program included in the multiplex
which may be found on the Status (right) side of the page.
In the Control section, the PID display mode and time source may be selected.
The PID display mode is used to select whether the PID numbers on all the
screens are displayed in decimal or hexadecimal format. (Note that program
numbers are always displayed in decimal format regardless of this selection.)
Because up to four independent input sources may be present, the Time Source
box is used to select which of these inputs is used to set the clock in the unit.
The Compel section is for systems that use Wegener's Compel Control. Here,
you may select which of the input streams contains the Compel commands and

DTV 720 User’s Manual
800043-01 Rev. B 20 wegener.com
in which PID of that stream those commands are located. A checkbox and but-
ton are provided to enable Compel Control and set the stream and PID infor-
mation.
Figure 3.1 DTV720 Control and Status Page
Status
The Status section (on the right side) provides the unit’s input and output signal
status. The ASI Input entries indicate whether or not ASI Inputs 1 and 2 show
frame lock. Frame lock normally indicates a signal good enough for reception
with few or no errors. When frame lock is achieved, the TSID of the stream is
shown together with the errored seconds. Errored Secs indicates the number of
seconds in which errors occurred since the last time the error counter was
cleared. This counter may be cleared by clicking the word "Clear".
The RF Input entries show for each RF input the channel number (this is the
actual RF broadcast channel, not the legacy analog channel number of the sta-