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Instruction Manual
UNITY4422™
MPEG VIDEO DECODER
with DVB-ASI INPUT CARD
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 permission
of Wegener Communications, Inc.
When ordering parts from Wegener
Communications, Inc., be sure to include
the equipment model number, equipment
serial number, and a description of the
part.
In all correspondence with Wegener
Communications, Inc.
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Page 3 CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. CAUTION As this unit is intended to interface with other electrical/electronic systems, proper engineering practices must be adhered to during installation and check-out. All AC power and ground must be installed in accordance with National Electric Code Standards as to conductor size and
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Page 5 About This Manual This manual was composed in Microsoft Word 97, and is configured to be used most easily as an electronic document. It can be printed and used as a hard copy, but some features, such as links, are not accessible in that mode. If viewing the electronic version, we recommend you safeguard the original version to avoid the effects of somehow altering your master copy. 1. Cross-references Cross-references are internally linked for easy access. If you are viewing the electro
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Page 7 TABLE OF CONTENTS ABOUT THIS MANUAL........................................................................................5 SECTION 1 GENERAL INFORMATION ............................................11 1.1 GENERAL....................................................................................................................... 11 1.2 INTRODUCTION........................................................................................................... 11 1.3 UNPACKING AND
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Page 8 2.5.4 AES/EBU CONNECTOR PINOUT ................................................................................ 24 2.6 EXPANSION CARD CONFIGURATION................................................................... 27 2.6.1 BALANCED AUDIO EXPANSION CARD........................................................................ 27 2.6.1.1 Audio Card Jumper Configuration..................................................................................................27 2.6.1.2 Audio Card Label
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Page 9 A.2.5 OH............................................................................................................................. 45 A.2.6 PC DEVICE BAUD PARITY............................................................................................. 45 A.2.7 PERM SETTINGS......................................................................................................... 45 A.2.8 PERMCH LOCATION...................................................................................
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Page 10 FIGURE 1. UNITY4422 BLOCK DIAGRAM.................................................................................... 16 FIGURE 2. FERRITE BEAD INSTALLATION ..................................................................................... 25 FIGURE 3. UNITY4422 FRONT PANEL ......................................................................................... 26 FIGURE 4. UNITY 4422 REAR PANEL......................................................................................
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Page 11 SECTION 1 GENERAL INFORMATION 1.1 GENERAL The purpose of this manual is to describe the proper installation and operation of the Wegener Communications UNITY4422 MPEG Video Decoder. 1.2 INTRODUCTION The UNITY 4422 unit is an MPEG decoder designed to receive its input from a DVB-ASI input source. These inputs include the new 4:2:0 and 4:2:2 chroma formats, as well as the traditional 4:3 and new 16:9 aspect ratios. The input is a DVB-compliant signal, which is processed to produce NTSC o
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Page 12 1.4.2 Reduced Air Flow Installation of the equipment in a rack should be such that the amount of airflow required for safe operation of the equipment is not compromised. 1.4.3 Mechanical Loading Mounting of equipment in a rack should be such that a hazardous condition is not achieved due to uneven loading. 1.4.4 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 p
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Page 13 1.7 PHYSICAL SPECIFICATIONS The operating temperature of the unit is +10°C to +40°C in still air with unblocked side vents. (The unit is fan-cooled.) Table 1. Physical Specifications Parameter Description Size 19”W x 1.75”H x 13.75”D 48.26 Cm W x 4.8 Cm H x 34.9 Cm D Weight 10.5 Pounds (4.8 kg) Operating Temperature +10°C to +40°C +50°F to +104°F Power Requirements 115VAC, 60Hz, 0.8A Typ., or 230VAC, 50Hz, 0.5A Typ. 1.8 TECHNICAL SUPPORT In the event the unit fails to perform as describ
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Page 14 1.9 MANUALS If you have any suggestions concerning this, or any Wegener Manual, you can E-mail them to manuals@wegener.com. If you would rather mail them, please do so to the address shown below. Our preference is that you copy the page(s) in question, mark it up, and fax or mail us the copy. We do appreciate constructive criticism. The Fax Number is 770-497-0411. Attn: Manuals Wegener Communications, Inc. 11350 Technology Circle Duluth, GA 30097 UTY4422-002 Page 14 of 72
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Page 15 SECTION 2 SYSTEM CONFIGURATION 2.1 UNIT OVERVIEW The UNITY 4422 features several separate hardware components: The DC switching power supply, the main motherboard, a DVB-ASI input card, front-panel keypad controller card, and a front-panel LCD assembly. The DC switching power supply provides all internal regulated DC power. The unit’s input is to the ASI card, mounted as Module 1. That card has two BNC input connectors and an internal (inside the chassis) connector that connects its o
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Page 16 Figure 1. UNITY4422 Block Diagram UTY4422-002 Page 16 of 72 +12V 120 VAC -12V POWER +5V SUPPLY +24V GND +5V REG +3.3V 256K x 16 256K x 16 +5V 256K x 16 REG +3.3V 256K x 16 256K x 16 +24V 27 Mhz REG LNB 256K x 16 VCXO 2 COMPOSITE I C BUS VIDEO DVB RECEIVER VIDEO ENCODER MODULE (OR A R/X CONTROL DECRYPTION HBUS VIDEO DEC EXPANSION) R/X DATA IN DEMUX 2 LEFT MPEG2 A / V I C BUS AUDIO DECRYPTION DEC 1 RIGHT MPEG2 TRANSPORT LEFT 2 I C BUS SECURE MC AUDIO 2 I C BUS DEC 2 AUDIO 2 R/X CONTRO
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Page 17 The main host processor runs the control system on the main board. This processor interfaces with the COMPEL™ network as well as local users and then controls and monitors the unit’s operations. To do its job, this processor accesses the control data streams recovered from the main transport demultiplexer. One of these may be a Conditional Access data stream (if used). The main processor sends this data to a separate secure microprocessor, which looks to see if its unit serial number
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Page 18 Table 2. Video Resolution Requirements NTSC PAL 720H x 480V (Full Resolution) 720H x 576V 544H x 480V (3/4 Resolution) 544H x 576V 480H x 480V 480H x 576V 352H x 480V (1/2 Resolution) 352H x 576V 352H x 240V 352H x 288V 2.3.5 Video Specifications NTSC video performance is specified below at a 9 Mbps video PES rate, 720Hx480V resolution. Table 3. Video Specifications Parameter Production Specification Signal Type PAL NTSC Output Level 1.0 Vp-p, ± 2% 1.0 Vp-p, ± 2% Output Impedance 75
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Page 19 Table 4. Audio Specifications Parameter Specification (each channel of stereo pair) Output Level-MAX PPL +18.0 ±0.5 dBm into 600 ohms, at 0 dB attenuation level Impedance Balanced: < 60 Ohms Frequency Response 20 Hz to 20 kHz, + 0.5/-1.5 dB 50 Hz to 15 kHz, ± 0.5 dB Phase accuracy 50 Hz to 15 kHz, ≤± 2°from linear phase Harmonic Distortion (1 kHz ≤ 0.5 % test-tone, 1 dB below PPL) S/N Ratio m 80 dB (22 Hz to 20 kHz) unweighted Dynamic Range 16 bits A/V Sync ≤± 50 mS error 2.3.7 Serial A
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Page 20 2.3.10 LNB DC Power The unit may feed DC power to an external antenna-mounted LNB using either the RF-In connector’s center-pin or a terminal on the rear-panel terminal strip (with an external DC power inserter). The nominal voltage supplied is +17 to +24 VDC, while the maximum load current is 250 mA. The output is short-circuit protected by a thermal fuse. An internal jumper (J27) is used to enable/disable DC power on the RF-In center-pin. Once that jumper has been set, the LNB powe
