Wegener UNITY4650 User manual

UNITY4650
Digital Media Receiver/Decoder
User’s Manual

Unity 4650 User’s Manual
800034-01 Rev. A 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, COMPEL CONTROL, and UNITY4650 are trademarks of
WEGENER Communications, Inc. All other trademarks are the property of
their respective owners.
Correspondence regarding this publication,
800034-01 Revision A
should be forwarded to:
Wegener Communications, Inc.
Technology Park/Johns Creek
11350 Technology Circle
Duluth, GA 30097-1502
Phone: [phone]
Fax: [phone]
The Wegener Unity 4650 is approved under FCC Part 15B Class A,
UL/C-UL1950 3rd Edition, and CE [EN60950, EN55022(94), and
EN55024(98)].

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wegener.com 3 800034-01 Rev. A

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Table of Contents
Chapter 1 General Information
1.1 Manual Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.2 U4650 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Physical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 1.1 The Unity 4650 Digital Media Receiver/Decoder . . 8
1.3 U4650 Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 1 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 2 Transport In Options . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.4 Safety Summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
1.5 Glossary of Terms and Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . 19
Table 3 Glossary of Terms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Chapter 2 Installation
2.1 Unpacking and Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
2.2 Location and Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
FCC-mandated suppression of radiated emissions . . . . . . . . . . . . . . 25
Rack Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Desktop Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
2.3 U4650 Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 2.1 U4650 Rear-panel Connector Locations . . . . . . . . 28
Figure 2.2 U4650 Transport In Options . . . . . . . . . . . . . . . . . . 29
Table 4 Rear-panel Connectors. . . . . . . . . . . . . . . . . . . . . . . . . 30
Table 5 Front-panel Connectors . . . . . . . . . . . . . . . . . . . . . . . . 32
2.4 Serial Port Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Device assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Device configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Table 6 Device Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . 33
Device handling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
2.5 Installation Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
RF input check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Audio/video check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Relay Pulse Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Chapter 3 Operation
3.1 Theory of Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Functional summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Automated recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Monitoring and control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Figure 3.1 Unity 4650 Functional Block Diagram. . . . . . . . . . 39

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3.2 Operation from Front Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Front-panel layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Figure 3.2 U4650 Front-panel Layout. . . . . . . . . . . . . . . . . . . . 40
LCD screen relationships. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Figure 3.3 LCD Screen Relationships. . . . . . . . . . . . . . . . . . . . 41
LCD screen content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Figure 3.4 Unity 4650 Top-level Screens . . . . . . . . . . . . . . . . . 42
Home and default screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Interpreting LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Figure 3.5 LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Table 7 Front-panel LED Indicator Descriptions . . . . . . . . . . 45
Front-panel audio monitor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
3.3 Operation from Local/Remote Terminal . . . . . . . . . . . . . . . . . . . . . . 48
Overview and syntax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
User commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Chapter 4 Maintenance and Troubleshooting
4.1 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
4.2 General Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
No output or indications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
No audio or video output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Missing an audio or video output while others are okay. . . . . . . . . . 74
4.3 Alarms and Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Table 8 Alarm and Warning Descriptions . . . . . . . . . . . . . . . . 75
Chapter 5 Customer Service
5.1 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
5.2 Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Appendix A Monitoring and Control Details
A.1 Basic Navigation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
A.2 Info Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
A.3 Menu Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
A.4 Parameter Screens. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Index

wegener.com 7 800034-01 Rev. A
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 Unity 4650 Digital Media
Receiver/Decoder, referred to throughout this manual as the Model U4650 or
U4650.
The manual is divided into the following chapters:
1 General Information - a description of your U4650, its functions and
specifications, and a glossary of terms.
2 Installation - procedures and information for the correct and safe instal-
lation of your U4650.
3 Operation - instructions for starting and operating your U4650.
4 Maintenance and Troubleshooting - information about maintaining
your U4650 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]

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800034-01 Rev. A 8 wegener.com
1.2 U4650 Overview
Functional
Description
The Wegener Model Unity 4650 Digital Media Receiver/Decoder is a fully DVB-
compliant satellite video IRD. The U4650 receives an L-band RF carrier from an
external LNB (or, if configured as a decoder, accepts ASI transport from a terres-
trial source), extracts the MPEG transport stream, and provides the decompressed
program content to analog audio/video and (optional) digital audio/video outputs.
Features include:
•Control by local user (terminal or front-panel) or remote COMPEL

system
•Download of software application upgrades via satellite (with backup
application storage)
•Supports COMPEL

/CA conditional access at transport level or by program
•Supports receiver card options using either DVB-QPSK and/or Advanced
Turbo-Modulations (Turbo-QPSK, T-8PSK, or T-16QAM)
•Supports optional ASI Transport Input card (for decoder-only functioning)
•Supports ISO 13818-1 transport rates from 2.5 to 100 Mbps
•Local decompression of MPEG-2 video (4:2:2P@ML or 4:2:0 MP@ML)
•Auto-recognition and support of 525-line NTSC or 625-line PAL
•Supports 4:3 or 16:9 aspect ratio, including re-scaling of 16:9 down to 4:3
•Local decompression of two independent audios per MPEG-2 (L1 or L2)\
•Optional support of SMPTE302 uncompressed audio pass-through
•VBI data supported in extended video window (4:2:2P@ML only) or re-
inserted by IRD
•Pro Option support: SDI with two stereo channels embedded audio output
•Pro Option support: Genlock with subcarrier phase and H offset adjust
•High-speed IP data routing output
•Alarm relay and user-cueing relays
•Optional front-panel audio and video monitors
•Web browser control (contact factory)
Physical
Description
The U4650 is housed in a standard, 1 RU, rack-mountable chassis. Its front panel
(see
Figure 1.1
) provides a user interface through six push buttons and a 2x20-
character LCD. It also supports optional front-panel monitors for audio and video.
The rear panel holds connectors for input AC power, composite video output, Pro
option genlock reference input, Pro option SDI video (w/2 embedded AES3 audio
channels), Ethernet port, serial port, alarm and user cue relays, and two analog bal-
anced audio pairs. The unit also includes two Unity expansion option module slots
.
Figure 1.1 The Unity 4650 Digital Media Receiver/Decoder

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1.3 U4650 Specifications
Table 1: Technical Specifications
Characteristic Specification
POWER
Voltage 90-132 or 175-264 VAC auto-detect/selected
Frequency 60/50 Hz ±2%
Consumption With full LNB DC load, PRO option, & QPSK receiver card:
30 W typical power dissipation
45 VA typical line loading
TRANSPORT IN OPTIONS See Table 2: Transport In Options on page 14
CONDITIONAL ACCESS
Wegener COMPEL/CA Transport-level or by program
PIN Scrambling
TRANSPORT DEMULTIPLEXING
Aggregate MPEG Transport Rate 2.5 to 100 Mbps if not limited by symbol-rate for given modu-
lation and FEC.
Number of Programs Unlimited
PSI Recognition Automatic
VIDEO DECODER
Compression System MPEG 2 (includes legacy MPEG 1)
Supported Chrominance Sampling 4:2:0 MP@ML
4:2:2 P@ML
Video ES rate 50 Mbps max (15Mbps for 4:2:0)
Analog Output Format NTSC composite per SMPTE170M
PAL (B,G,H,I) composite per CCIR 624
Supported Digital Video Resolutions Horizontal: 720, 704, 640, 544, 480, 352 pixels
NTSC Vertical lines: 512 (4:2:2 sampling only), 480, 240
PAL Vertical lines: 608 (4:2:2 sampling only), 576, 288
Aspect Ratios 4:3 or 16:9. May be set to auto-detect or to force original 16:9
material to 4:3 output using pan and scan vectors supplied by
MPEG encoder (as available).

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COMPOSITE VIDEO OUTPUT (meets R5250C "Short Haul")
Output Level 1.0 Vp-p, ± 2%
Output Impedance 75 Ω
Multiburst NTSC: From 0.5 to 4.2 MHz: ≤ ±0.3 dB
PAL-B: From 0.5 to 4.8 MHz: ≤ ±0.3 dB
Differential Gain ≤2 IRE
Differential Phase ≤ .7°
L/C Gain Inequality ≤ ±2 IRE
L/C Delay Inequality ≤ ±20 ns
Line Time W-form Distortion ≤.5 IRE p-p
Field Time W-form Distortion ≤3 IRE p-p
Video SNR Weighted ≥ 67 dB
VIDEO VERTICAL BLANKING DATA
VBI Data Pass-thru When using 4:2:2 chroma sampling, compression is supported
down to lines 10 (NTSC) and 7 (PAL) on each composite
video field.
VBI Data Re-insertion • EIA-608 Line 21 data for both fields (CC & XDS) per
ATSC (Annex A, A/53B). Also compatible with Harmonic
and Tandberg proprietary protocols;
• Type I and II Nielsen AMOL compatible with Tandberg
proprietary protocols.
VBI Data Re-insertion Control Wegener COMPEL control may enable/disable any or all of
the above re-inserted VBI lines
AUDIO DECODERS (MAIN) Two independent audio decompression devices (ports 1&2)
Compressed modes MPEG-1 Layers 1 and 2, MPEG-2 Layer 2
Compressed data rates MPEG: Up to 384 kbps ES rate
Uncompressed mode Full-rate (AES3) digital audio per SMPTE302M, 2 channels
per stream, 24-bit subframes, 48 kHz sampling
Sample Rates Supported 32, 44.1, and 48 kHz. Both Audio port 1 and port 2 must be
assigned audio streams with same sample rate. If one is
SMPTE302M audio, this rate is fixed at 48 kHz per above.
Stereo output routes Normal stereo, Sum to both, L to both, and R to both
Table 1: Technical Specifications
Characteristic Specification

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wegener.com 11 800034-01 Rev. A
AUDIO OUTPUT
Output Level-MAX PPL +24.0 dBm into 600 ohms @ 0 dB attenuation
(+18.0 dBm is optional)
Output level adjust range 0 to 20 dB attenuation in 2 dB steps from Output Levels above
Output Impedance Balanced: < 60 Ω
Frequency Response 20Hz to 20 kHz, + 0.5/-1.5 dB
50 Hz to 15 kHz, ± 0.5 dB
Harmonic Distortion ≤0.1% (1 kHz TT@1 dB below PPL)
Phase Accuracy 50 Hz to 15 kHz, ≤±2° from linear phase
SNR ≥80 dB (22 Hz to 20 kHz) unweighted
Dynamic Range 24 bits
SDI VIDEO OUTPUT (OPTION)
Type 270 MBaud 4:2:2 13.5 MHz-sampled component-serial per
SMPTE 259M. Supports 525L@29.97Hz frame rate and
625L@25Hz frame rate.
Impedance 75 Ω
EDH Support None
Embedded Audio Embedding of AES3 streams for both audio ports 1 and 2 per
SMPTE 272M. Audio content, in digital format, follows that
of the associated port. Full user control of first 3 bytes of the C
(Channel Status) bits for each channel.
GENLOCK (OPTION)
Genlock Reference Input Composite video reference at 1 Vp-p
Genlock Reference Format NTSC composite per SMPTE 170M
PAL (B, G, H, I) composite per CCIR 624
Genlock Reference Termination Hi-Z on BNC coax jack
Genlock Lock Time
(w/50 ppm initial timing error) <2 seconds
Genlock Unit-to-Unit Timing Variation Units may be aligned using internal adjustments:
Video output timing may be adjusted in 2.3 nS (1/16th of
27MHz clock period) increments. Adjustment range is
±9.0µsec minimum.
Composite video subcarrier phase may be adjusted in ~1.4°
phase increments. Full range is ±180°.
Table 1: Technical Specifications
Characteristic Specification

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TEST MODES
Audio/Video Port 1&2 audio test tones: pulsing 1 kHz tone @ ~ PPL -10dB
Video test pattern: 75% Color bars (on composite video only)
Signals are for system connection verification and are not use-
ful for measurements.
RF Ports (if RF switch installed) Sampling of all RF input ports for RF power level
Relays Toggles selected relay (Cue or Alarm) on continuing basis
FRONT-PANEL MONITORS (actively-isolated from, but otherwise buffered copies of the
standard analog outputs)
Video Composite video; 1 Vp-p, 75 Ω
Audio One stereo pair (user-selectable from audio port 1 or 2),
Level: ~ -19 dB below main audio output
(if set for +24 dBu output PPL)
Impedance: < 60 Ω, unbalanced
SERIAL PORTS
Standard RS232, DCE
Handshaking None in standard configuration. May be upgraded for 5-wire
interface (RTS/CTS) - contact factory.
Selectable Services Terminal monitoring and control
Modem dial-in
Auxiliary async data output
COMPELE-mail character-based async output
Local COMPEL control input (testing only)
Baud Rates Up to 38.4 kilobaud
Formatting 8 data bits, one start, one stop-bit, half-duplex. Parity selection
set by unit software.
Daisy Chaining May be upgraded for shared serial bus. Serial ports with "Ter-
minal" or "Modem" device assignments may be daisy-chained
using tri-state of data output lines.
ETHERNET PORT
Physical Layer Autoselection of 10baseT or 100baseT on RJ45 jack
Media Access and Link Layers Per IEEE 802.3 (Ethernet)
Network and Transport Layers Binds to TCP/IP stack which enables (1)Web-based control;
(2)Telnet control; or (3)IP Data routing (output)
Table 1: Technical Specifications
Characteristic Specification

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ALARM/CUEING RELAYS One relay dedicated to indicate unit ALARMS and two relays
dedicated to user control (such as cueing). The ALARM relay
automatically de-energizes for alarm conditions so that power
loss to the unit indicates as an alarm.
Type Form C, wiper contacts NC contact when de-energized and
NO contact when energized
Polarity Common, NC and NO contacts supplied externally
Rating 30VDC open circuit, 100 mA max current closed
FRONT-PANEL EMAIL Up to 512-character messages from COMPEL. New mes-
sages over-write older messages. May also be cleared by local
user.
CHASSIS
Height Std. 1RU 1.75 inches (4.45cm)
Width EIA std. 19 inches (48.26cm)
Depth Back of rack-ears to rear panel: 14.9 inches (37.85 cm)
Back of rack-ears to end of connectors: 15.7 inches (39.88 cm)
Weight ~10.5 lb. (with Receiver card & AV monitor option only)
Cooling Fan-cooled with left-side inlet and right-side exhaust (viewed
from front). Fan is activated after unit reaches specific temper-
ature.
ENVIROMENTAL
Operating Temperature +10°C to +50°C (+50°F to +122°F) Unit gives warning indi-
cation for over-temperature conditions
Storage Temperature -20°C to +70°C (-4°F to 158°F)
AGENCY APPROVALS
UL UL/C-UL1950 3rd Edition
FCC Part 15B Class A, per Title 47 CFR (FCC rules)
CE EN60950, EN55022(94), and EN55082-1 —tested per
EN61000-4-2(95), -4-3(02), -4-4(95), -4-5(95), -4-6(96), and
–4-11(94)
Table 1: Technical Specifications
Characteristic Specification

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Table 2: Transport In Options
Characteristic Specification
DVB-QPSK RECEIVER OPTION (No RF Switch)
RF INPUT
Input Impedance 75Ω unbalanced
Input VSWR, 75-Ωsystem < 2.1:1 (9.0 dB R.L. min), 950-1450 MHz
< 3.0:1 (6.0 dB R.L. min), 1450-2150 MHz
Surge Resistance Guaranteed survival from up to 10 direct-coupled 8kV dis-
charges (per IEC 801-2)
RF TUNING
Input Frequency Range 950 to 2150 MHz
LO Leakage at Input ≤ -50 dBm
Symbol-rate Range 2 to 45 Msps (may be limited by Transport Rate limits)
Tuning Resolution 10 kHz
Input Signal Level Range -25 to -65 dBm
Signal Level Warning Limits
warns within +10/-5 dB of upper limit and +5/-10 dB of lower limit
Maximum Aggregate Input Power -5 dBm min
DEMODULATOR/FEC
Modulation QPSK (α =.35) per DVB (EN 300 421)
Carrier acquisition range ±1 MHz or ± 10% of symbol-rate QPSK, whichever is greater
Max Eb/N0@ Quasi-error-free threshold
(less than one uncorrected error-event per
hour)
Per EN300 421:
QPSK R=1/2: 4.5 dB,
QPSK R=2/3: 5.0 dB,
QPSK R=3/4: 5.5 dB,
QPSK R=5/6: 6.0 dB,
QPSK R=7/8: 6.4 dB
RF Power Level Estimator
(locked to carriers or not)
Unitless metric SIGNAL corresponds to input power as follows:
above -25dBm
-25dBm
-35dBm
-45dBm
-55dBm
-65dBm
below -65dBm
no signal
Extrapolated from 90 up to 100+
90
70
50
30
10
Extrapolate from 10 down to <0
<0
Accuracy: unit to unit <±5 dBm; over frequency <±10 dBm

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wegener.com 15 800034-01 Rev. A
LNB DC POWER (supplied on RF center conductor)
Activation User- or network-controlled selectable: ON or OFF
Voltage ~ +18.7 VDC nominal at no loading, +18.0 VDC min. at max
loading
Current (full load) 350 mA max
Short-circuit protection Thermal fuse, tripping at ~500 mA.
European “Universal LNB” Software may be upgraded for “Universal Single LNB” polar-
ization and freq-band control per ASTRA recommendation
DVB-QPSK RECEIVER WITH 4-PORT RF SWITCH OPTION
SWITCHED RF INPUTS
Input Impedance 75Ω unbalanced
Isolation, port-to-port > 45 dB, 950-1450 MHz
> 40 dB, 1450-2150 MHz
Input VSWR, 75-Ωsystem, selected port < 2.6:1 (7 dB R.L. min), 950-1450 MHz
Not guaranteed, 1450-2150 MHz
Input VSWR, 75-Ωsystem, unselected
port < 2.0:1 (10 dB R.L min), 950-1450 MHz Not guaranteed, 1450-2150 MHz
Surge Resistance Guaranteed survival from up to 10 direct-coupled 8kV dis-
charges (per IEC 801-2) whether port is selected or not
RF TUNING Same as QPSK option described above
DEMODULATOR/FEC Same as QPSK option described above
LNB DC POWER Supplied on separate 2-pin header. Performance otherwise the
same as QPSK option described above
TURBO PSK RECEIVER OPTION, BROADCOM PROTOCOL
RF INPUT
Input Impedance 75Ω unbalanced
Input VSWR, 75-Ωsystem < 1.9:1 (10 dB R.L. min), 950-1450 MHz
< 1.9:1 (10 dB R.L. min), 1450-2150 MHz
Surge Resistance Guaranteed survival from up to 10 direct-coupled 8kV dis-
charges (per IEC 801-2)
Table 2: Transport In Options
Characteristic Specification

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RF TUNING
Input Frequency Range 950 to 2150 MHz
LO Leakage at Input ≤ -60 dBm
Symbol-rate Range 1 to 30 Msps (may be limited by Transport Rate limits)
Tuning Resolution 10 kHz
Input Signal Level Range -25 to -65 dBm
Signal Level Warning Limits warns within +10/-5 dB of upper limit and +5/-10 dB of lower
limit
Maximum Aggregate Input Power 0 dBm max
DEMODULATOR/FEC
Modulation 1. DVB-QPSK (α =.35) per EN 300 421
2. Advanced "Turbo-QPSK" (α =.20 default; R=½, ¾) per
Broadcom proprietary protocol
3. Advanced "Turbo-8PSK" (α =.20 default; R=2/3, 5/6, 8/9)
per Broadcom proprietary protocol. [R=¾ Type I and II - con-
tact factory]
4. Advanced "Turbo-16QAM" (α =.20 default; R=¾) per
Broadcom proprietary protocol
Carrier acquisition range ±1 MHz or ± 10% of symbol-rate QPSK, whichever is greater
Table 2: Transport In Options
Characteristic Specification

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Max Eb/N0@ Quasi-error-free threshold
(less than one uncorrected error-event per
hour)
1. DVB-QPSK
QPSK R=1/2: 4.5 dB,
QPSK R=2/3: 5.0 dB,
QPSK R=3/4: 5.5 dB,
QPSK R=5/6: 6.0 dB,
QPSK R=7/8: 6.4 dB
2. Turbo-QPSK
R=1/2: 2.4,
R=3/4: 3.6
3. Turbo-8PSK
R=2/3: 4.8 dB,
R=3/4(I): 5.4,
R=3/4(II): 5.8,
R=5/6: 6.8,
R=8/9: 8.2
4. Turbo-16QAM
R=3/4: 6.6 dB
RF Power Level Estimator
(locked to carriers or not) Unitless metric SIGNAL corresponds to input power as fol- lows:
above -25dBm
-25dBm
-35dBm
-45dBm
-55dBm
-65dBm
below -65dBm
no signal
Extrapolated from 90 up to 100+
90
70
50
30
10
Extrapolate from 10 down to <0
<0
Accuracy: unit to unit <±5 dBm; over frequency <±10 dBm
LNB DC POWER (supplied on RF center conductor)
Activation User- or network-controlled selectable: ON or OFF
Voltage ~ +18.7 VDC nominal at no loading, +18.0 VDC min. at max
loading
Current (full load) 350 mA max
Short-circuit protection Thermal fuse, tripping at ~500 mA.
European “Universal LNB” Software may be upgraded for “Universal Single LNB” polar-
ization and freq-band control per ASTRA recommendation
Table 2: Transport In Options
Characteristic Specification

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TURBO PSK RECEIVER WITH 4-PORT SWITCH OPTION
RF SWITCH INPUT 4-port, single-throw switch
Input Impedance 75Ω unbalanced
Isolation, port-to-port > 45 dB, 950-1450 MHz
> 40 dB, 1450-2150 MHz
Input VSWR, 75-Ωsystem, selected port < 1.9:1 (10 dB R.L. min), 950-1450 MHz
< 1.9:1 (10 dB R.L. min), 1450-2150 MHz
Input VSWR, 75-Ωsystem, unselected
port < 1.9:1 (10 dB R.L. min), 950-1450 MHz < 1.9:1 (10 dB R.L. min), 1450-2150 MHz
Surge Resistance Guaranteed survival from up to 10 direct-coupled 8kV dis-
charges (per IEC 801-2) whether or not port is selected
RF TUNING Same as Turbo PSK option described above
DEMODULATOR/FEC Same as Turbo PSK option described above
LNB DC POWER Supplied on RF Input Port 4 - otherwise performs the same as
the Turbo PSK receiver described above.
ASI TRANSPORT INPUT OPTION
DVB-ASI INPUT One input per DVB ASI per EN50083-9 Annex B
Physical layer 270 Mbaud signaling on 75Ωcoax cable
Minimum byte gaps Down to 0-byte interbyte gaps
Transport data rate Limited to rates allowed by parent IRD
Table 2: Transport In Options
Characteristic Specification

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1.4 Safety Summary
The U4650 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 U4650:
Do not open the U4650 chassis cover.
The U4650 incorporates security labels over some of the screws. There are no
user-serviceable components within the U4650. Tampering with these security
labels or opening the unit will void your warranty. If you have questions, con-
tact Wegener's Customer Service Department at the address or numbers listed
in Chapter 5 Customer Service on page 83.
1.5 Glossary of Terms and Abbreviations
Table 3: Glossary of Terms
Term Definition
Ad avail, digital The opportunity for a local program splicer to insert local content in the MPEG PES
streams in substitution for “regular” network-distributed programming. The avail is
bounded by “splice out” and “splice in” points. "Splice points" are seamless insertion
points (located for the splicer by DPI messages) where the compressed stream may be
broken and substituted without frame-by-frame interruption of video.
Ad avail, analog The opportunity for local users to switch from the network-supplied programming to
locally-generated content (commercials). This is signaled by use of DTMF tones or clo-
sures of cue relays.
Alarm A condition or notification of a condition that prevents proper U4650 functioning.
Application Software The main host software which sets up the unit hardware, runs the process of acquiring
transport stream sources, sets up and monitors the demux and decompression processes,
monitors unit operations, and 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.
Aspect ratio (of video) The ratio of horizontal to vertical width in the expected video presentation monitor.

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Audio Language
Descriptor Legacy 3-character MPEG descriptor applied to a program’s audio streams. It was origi- nally allocated to designate languages, but is now used for generic identification.
Automated Recovery
(or Recovery) The mechanism used when the U4650 is unable to acquire a valid transport stream, loses network control or detects an invalid control stream, or is unable to deliver the required
services using its current settings. The unit automatically begins attempting operations
under "backup" unit settings stored in the presets table until it can return to normal opera-
tion or is stopped by local user command.
Boot loader Software residing in non-writable zone of flash which executes at unit reset. It will verify
and load the preselected application.
CA See "Conditional Access".
COMPELWegener's network control software that may be used to manage your U4650 as well as
other hardware.
Conditional Access Wegener’s system for securing the transmitted transport stream from unauthorized
access. It features distribution of ciphered authorizing messages within a special PID.
Upon deciphering in secure processors within the IRD, these messages continuously
update the IRD with the current descrambling key.
DPI Digital Program Insert. A special message, borne in an MPEG PID associated with a par-
ticular program, that signals the boundaries of ad avails.
DTMF Dual-Tone Multi-Frequency. Tone signaling system used by the legacy telephone system.
Tone pairs represented each of the keyboard items 0-9, *, and #. This system may be used
to control external cueing equipment.
DVB Digital Video Broadcast working group. This is a shorthand designation for a group of
industry standards that provide enhancements in the use of MPEG transport streams. (For
example, one DVB standard defined the standard way QPSK-modulated carriers would
convey these streams over satellite world-wide.)
Eb/N0Energy-per-bit per Noise density-per-Hertz. This is a unitless ratio that expresses signal-
to-noise ratio in carrier transmission systems that convey digital data. A quality measure-
ment for any such system is the Eb/N0needed to just convey the digital data within
acceptable error rates. This is called the “Eb/N0threshold”.
Errored seconds see ERT.
ERT Error Rate Threshold. Per DVB, that input RF signal-to-noise ratio, expressed as "Eb/N0",
where the receiver card detects an average of one transport packet with uncorrected errors
per one-hour interval. Wegener defines a similar metric of an average of one errored sec-
ond per hour, where an "errored second" is any one-second interval in which one or more
transport packets contains uncorrected errors.
Ethernet The widely-used LAN technology specified by IEEE standard 802.3
Table 3: Glossary of Terms
Term Definition