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Snell & Wilcox
Series of Decoders -50,-60,-70
Transit Protection-Important Notice
REMOVING THE TRANSIT TIE-WRAPS
When supplied the PCB card will be secured by 2 tie-wraps, looped around the card ejectors and through 2
holes in the base plate. Before installing the rack both of the tie-wraps should be removed by cutting off the
tie-wrap knot and completely removing the tie-wrap.
REPLACING THE TRANSIT TIE-WRAPS
Before shipping, the transit tie-wraps should be replaced with the
spare tie-wraps supplied (part no. RMW610). With the unit
free-standing ensure that the PCB card is pushed fully home
using the card ejectors. From the inside of the unit, feed the
tongue of the tie-wrap behind the card ejector and through the
base plate using the rear of the 2 holes. From the outside, feed
the tongue back through the base plate using the other hole, past
the front of the card ejector, feed through the eye of the tie-wrap,
pull tight and cut off the excess.
© December 1998
SNELL & WILCOX LTD, DURFORD MILL, PETERSFIELD, HAMPSHIRE, GU31 5AZ, UNITED KINGDOM.
Tel: +44(0) 1730 821188. Fax: +44(0) 1730 821199.
MDD550011298 Version 1 Issue 2
MDD550
Operator's
Manual
0.1
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Related Manuals for Snell & Wilcox MDD550-70
Summary of Contents for Snell & Wilcox MDD550-70
- Page 1 Snell & Wilcox MDD550 Series of Decoders -50,-60,-70 Transit Protection-Important Notice REMOVING THE TRANSIT TIE-WRAPS When supplied the PCB card will be secured by 2 tie-wraps, looped around the card ejectors and through 2 holes in the base plate. Before installing the rack both of the tie-wraps should be removed by cutting off the tie-wrap knot and completely removing the tie-wrap.
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Page 2: Safety Warnings
Safety Warnings Always ensure that the unit is properly earthed and power connections correctly made. This equipment shall be supplied from a power system providing a PROTECTIVE EARTH connection and having a neutral connection which can be reliably identified. The power terminals of the IEC mains input connector on the rear panel are identified as shown below: E = Protective Earth Conductor N = Neutral Conductor... -
Page 3: Mdd550011298 Version 1 Issue 2 Software Version 1.3.1 Onwards
EMC Standards This unit has been designed to conform to the following standards: Electromagnetic Compatibility-Generic Immunity Standard BS EN 50082-1:1992 The European Standard EN 50082-1:1992 has the status of a British Standard and is related to European Council Directive 89/336/EEC dated 3rd May 1989. Electromagnetic Compatibility-Generic Emission Standard BS EN 50081-1:1992 The European Standard EN 50081-1:1992 has the status of a British Standard and is related to European Council Directive 89/336/EEC dated 3rd May 1989. -
Page 4: Table Of Contents
Table of Contents SECTION Introduction Description ........1.1 Features . -
Page 5: Manual Revision Record
Manual Revision Record Date Version No. Issue No. Change Comments 050398 First Issue for MDD550 series 011298 UL data added New manual issued MDD550011298 Version 1 Issue 2 Software Version 1.3.1 onwards... - Page 6 Snell Snell & Wilcox & Wilcox MDD550 Series of Decoders MDD550 Covering MDD550-50, MDD550-60 and MDD550-70 Series MDD550-50 Operator’s Manual MDD550-60 MDD550- 70 Operator’s Manual...
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Page 7: Introduction
EMC regulations (BS EN 50081-1 for emission and BS EN 50082-1 for immunity) MDD550-50 NTSC Decoder MDD550-60 PAL Decoder Control is via card edge controls or by using the MDD550-70 Multi-standard Decoder RollCall™ remote control system. INPUT COMPOSITE PARALLEL SERIAL OUTPUT CONTROL... -
Page 8: Features
SECTION 1 Introduction FEATURES NTSC, PAL and Multi-Standard versions 4fsc to 4:2:2 bridge Sophisticated adaptive, multi-tap vertical-temporal separation filter Two 4fsc SMPTE-259 looped inputs One Parallel 4fsc input Four Rec656 4:2:2 outputs Synchronise frame operation Output may be locked to input High quality Digital filtering RollCall™... -
Page 9: Operational Block Diagram
SECTION 1 Introduction All 10-bit digital design OPERATIONAL BLOCK DIAGRAM MDD550050398 Version 1 Issue 1 Software Version 1.3.1 onwards... -
Page 10: Specifications
SECTION 2 Specifications INPUT SIGNALS Reference Standard Video or black burst via loop-through BNC connectors for 75 Ohms. Serial Two inputs (A and B ) for Serial Digital via loop-through BNC connectors for 75 Ohms. Input return loss better than -15 dB @ 270 MHz An input equaliser contains an automatic equaliser allowing input cable lengths of up to 150 m when high quality cable is used. - Page 11 SECTION 2 Specifications SIGNAL PATH Digital Input One parallel digital composite input via 25 way DB connector in accordance with SMPTE 244M (110 Ohm ±10 Ohms) Two serial inputs for 143 Mbs/177Mbs composite digital video data in accordance with SMPTE 259M-A via passive loop-through BNC connectors for 75 Ohms.
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Page 12: Installation
SECTION 3 Installation POWER CONNECTIONS This is the IEC320 mains power connector suitable for a standard IEC type power cable and contains a 1A(T) fuse. If a fused type plug is fitted to the cable a fuse of OWER 7A (F) rating should be installed. 64V(AC) 0Hz0.6A SE1A(T) -
Page 13: Communication Connections
SECTION 3 Installation COMMUNICATIONS CONNECTIONS CONTROL RS422 This 9 pin ‘D’ connector on the rear panel is the RS422 SERIAL OUTPUT CONTROL COMPO control connector. Connections are as follows: Pin 1 Ground Pin 2 Transmit TXA Pin 3 Receive RXB Pin 4 Common (Transmit Signal) Pin 5... -
Page 14: Input Connections
SECTION 3 Installation INPUT CONNECTIONS REFERENCE The unit and its output signals may be reference locked INPUT to an external analogue (black burst or composite video) signal using the ‘REFERENCE’ connector. This input expects a standard level signal via loop-through BNC connectors for 75 Ohms. If the loop-through facility is not used a BNC 75 Ohm terminating plug should be fitted on the unused connector. -
Page 15: Output Connections
SECTION 3 Installation OUTPUT CONNECTIONS SERIAL OUTPUTS SERIAL OUTPUT There are four outputs of Serial digital video available from the unit via these BNC connectors for 75 Ohms. Note that the following connectors have no function on this unit and connections should not be made to them: COMPOSITE A &... -
Page 16: Operation
SECTION 4 Operation GENERAL INFORMATION The MDD550 series may be controlled by means of a card edge controls located behind the hinged front panel, from a suitable active remote front panel or via a computer interface. Remote control is also available via a wired network system called RollCall™... -
Page 17: Operation Using Card Edge Controls
SECTION 4 Operation OPERATION USING CARD EDGE CONTROLS Adjustment of the settings for the MDD550 series is available either via card edge controls or via the RollCall™ remote control system. Front Panel Connector The front panel is connected to the card via this 9-pin connector. - Page 18 SECTION 4 Operation SW3 Position 4 This position allows the back porch to be adjusted. In NTSC mode the width of the back porch may be adjusted in 148 ns steps. Preset value is 4741 ns. In PAL mode the width of the back porch may be adjusted in 148 ns steps.
- Page 19 SECTION 4 Operation LED INDICATORS D1 (SOIRX) This indicator will flash when RS422 data is being received from the remote control port. D2 (SIOTX) This indicator will flash when RS422 data is being transmitted to the remote control port. D3 (DAT2) This indicator will flash when network data is being received from the RollCall™...
- Page 20 SECTION 4 Operation This Hex switch allows various decoder comb modes to be selected. Position 0: Studio 1 This mode should be used for most stable studio signal sources Position 1: Studio 2 This mode should be used for ‘non-sports’ type material.
- Page 21 SECTION 4 Operation SW5 and SW6 The two 8-way DIL switches allow various functions to be set when an active front panel is not fitted. Note that when an active front panel is fitted most switch settings will be reflected by the front panel menu display or indicators.
- Page 22 SECTION 4 Operation SW6 (UP = OFF, DOWN = ON) Position 1 Input Signal Set-Up (Only available in NTSC mode) This switch should be set to the OFF position if the input signal has set-up (e.g. NTSC USA); it should be set to the ON position if the input signal does not have set-up (e.g.
- Page 23 SECTION 4 Operation Position 8 has no function SW7 and SW8 These two switches enable the RollCall™ network address to be set. SW7 sets the MSB (most significant bit) and SW8 sets the LSB (least significant bit) Both of these switches are used to define the Unit Address code for the equipment.
- Page 24 MDD550050398 Software Version 1.3.1 onwards...
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Page 25: Operation From An Active Front Panel
SECTION 4 Operation OPERATION FROM AN ACTIVE FRONT PANEL (Optional) All operational parameters and selections are made using a system of menus displayed in two LCD windows. Menus are selected by push buttons and further menu selections made by rotating a spinwheel and pressing a push button. - Page 26 SECTION 4 Operation Control Window The control window displays all Selection Menus and sub-menus. An example is shown opposite. Input... Output... Comb... Setup... The selection is made by pressing the button adjacent Genlock... Status... to the required item and will become highlighted (reverse text) when active.
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Page 27: Active Front Panel Push Buttons
SECTION 4 Operation ACTIVE FRONT PANEL PUSH BUTTONS Home Pressing the Home button will display the Main Menu in the control window from any position in the menu hierarchy. Previous The Previous button allows a return to the last menu that was changed. -
Page 28: Menu Details
SECTION 4 Operation MAIN MENU DETAILS Simple1 T h i s s i m p l e d e c o d e m o de incorporates a wide bandwidth The main menu is located in the control display subcarrier notch filter. window and is the highest level menu from which various sub-menus may be selected using the Simple2... - Page 29 SECTION 4 Operation Output Input Set-Up (Only available in NTSC Mode) This selection reveals a sub-menu This selection reveals the Output Menu that allows the unit to correctly process input signals that have or Signal Loss have not, a black level set-up. Note: NTSC signals originated in the USA normally have set-up;...
- Page 30 SECTION 4 Operation Blanking This selection reveals the Blanking sub-menu that allows picture blanking to be adjusted. Using both the Front Porch and Back Porch controls allows the blanking position and width to be adjusted by setting independant start and finish points. It should be noted that these controls will not allow blanking to exceed the limits for valid D1 signals.
- Page 31 SECTION 4 Operation Status This selection reveals the Status Menu and allows the following modes to be enabled: Unit Name The unit name of MDD550 will be displayed in the window and the text may be edited as follows: When the item is selected, the first character of will be in reversed flashing text;...
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