Table of Contents
Related Manuals for GRASS VALLEY SMS 8301A
Summary of Contents for GRASS VALLEY SMS 8301A
- Page 1 Instruction Manual T P 34 7 3- 0 1 F I R S T P R I N T N G : A U G U S T 1 9 9 5 R E V I S E D P R I N T N G : D E C E M B E R 1 9 97 S M S 8 3 0 1 A C O M P O N E N T A N A L O G V I D E O T O S E R I A L D I G I T A L C O N V E R T E R...
- Page 2 U.S. copyright law, without the prior written consent of Grass Valley Group, P.O. Box 599000, Nevada City, CA 95959-7900 USA. GRASS VALLEY GROUP is a registered trademark and Grass Valley is a trademark of Grass Valley Group. All registered trademarks and trademarks are property of their respective holders.
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Page 3: Table Of Contents
. xii SMS 8301A Component Analog Video to Serial Component Digital Converter Introduction ........... . - Page 4 Contents Front Panel Controls/Displays ......Front Panel ..........Input Format .
- Page 5 Contents List of Illustrations Figure 1. 8301A Block Diagram ........Figure 2.
- Page 6 Contents List of Tables Table 1. Format Selection ....... . Table 2.
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Page 7: Important Safeguards And Notices
Important Safeguards and Notices Information on the following pages provides important safety guidelines for both Operator and Service Personnel. Specific warnings and cautions will be found throughout the manual where they apply, but may not appear here. Please read and follow the important safety information, noting especially those instructions related to risk of fire, electric shock or injury to persons. - Page 8 Section — Important Safeguards and Notices This symbol represents a protective grounding terminal. Such a terminal must be connected to earth ground prior to making any other connections to the equipment. The fuse symbol indicates that the fuse referenced in text must be replaced with one having the ratings indicated.
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Page 9: Warnings
Warnings Warnings Heed all warnings on the unit and in the operating instructions. Do not use this product in or near water. Disconnect AC power before installing any options. This product is grounded through the grounding conductor of the power cord. To avoid electrical shock, plug the power cord into a properly wired receptacle before connecting the product inputs or outputs. -
Page 10: Cautions
Section — Important Safeguards and Notices Cautions To prevent damage to equipment when replacing fuses, locate and correct the trouble that caused the fuse to blow before applying power. Verify that all power supply lights are off before removing power supply or servicing equipment. Use only specified replacement parts. -
Page 11: Power Supply Cords
Power Supply Cords Power Supply Cords There are two types of power supply cords available for the SMS 8000 Series. Refer to one of the following, depending on the location where the equipment will be used. North American Power Supply Cord This equipment is supplied with a molded grounding plug (NEMA 5-15P) at one end and a molded grounding receptacle (IEC 320-C13) at the other end. -
Page 12: Emc Regulatory Notices
Section — Important Safeguards and Notices EMC Regulatory Notices Federal Communications Commission (FCC) Part 15 Information This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference. (2) This device must accept any interference received including interference that may cause undesirable operations. -
Page 13: Sms 8301A Component Analog Video To Serial Component Digital Converter
Modules are selected by the user to suit their particular requirements. The SMS 8301A CAV to Serial Component Digital Converter Module accepts a component analog video (CAV) input (525 or 625 line) and converts it to an 8 or 10 bit 270 Mb/s serial component digital signal per SMPTE 259M/EBU Tech 3267 standard. -
Page 14: Function
SMS 8301A Component Analog Video to Serial Component Digital Converter Function This description is divided into two sections: Signal Processing Timing and Control Refer to block diagram Figure 1 while reading the pages that follow. Reference Vertical Detector Sync External... - Page 15 Function Format Select Switch Ref Sync System Control System Free Run Presence Micro Control Control Detector Controller Outputs Remote Monochrome Ref Vertical Control Local Horizontal Timing Vert Timing 27MHz VCXO Horizontal 13.5 MHz 2H Clock Freq Generator Timing and Auto Control Divider Generator...
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Page 16: Signal Processing
SMS 8301A Component Analog Video to Serial Component Digital Converter Signal Processing The three video input channels (Y/G, B-Y/B, R-Y/R) are passed through Analog Processing and Filtering circuitry then applied to the Analog–to–Digital Converter and Digital Filter block. Three A/D converters sample the video at 27MHz and converts it to 10–bit data. -
Page 17: Timing And Control
Function Timing and Control The Microcontroller interfaces between front panel controls and the crosspoints and registers of the Digital Matrix and Blanking Gate Limiter and Rounder circuits. The controller also configures the chroma channel low pass filter ASICs and feeds registers which determine the mix coefficients for the Digital Matrix. -
Page 18: Specifications
SMS 8301A Component Analog Video to Serial Component Digital Converter Specifications Specifications are subject to change without prior notice. Component Analog Video Input Input Connectors 3 BNC terminating 75 Ω nominal Input Impedance Input Return Loss >40 dB to 5.5 MHz... - Page 19 Specifications Performance (Continued) Frequency Response (Y) ±0.1dB to 6MHz ref 100 kHz ) ±0.1 dB to 2.55 MHz ref 100KHz Group Delay Error (Y) 10 Hz to 5.2 MHz, <5nS p-p ) 10Hz to 2.5 MHz, <5nS p-p Relative Timing Error Y to C , <5nS , <5nS...
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Page 20: Installation
SMS 8301A Component Analog Video to Serial Component Digital Converter Installation This section contains: Module Configuration Module Installation Rear Connector Front Panel Controls/Displays Module Configuration When installing the 8301A module, six jumpers must be checked and/or set: Vertical Blanking Width Selection Jumper, JP1... -
Page 21: Vertical Blanking Width Selection
Installation Vertical Blanking Width Selection JP1 selects between Narrow or Wide vertical blanking width when operating in the 525 or 625 line standard. See Figure 2 below for the location and settings of JP1. NARROW WIDE NARROW WIDE Figure 2. JP1 Jumper Settings... -
Page 22: 8/10 Bit Output Selection
SMS 8301A Component Analog Video to Serial Component Digital Converter 8/10 Bit Output Selection JP101 selects between 10 bit or rounded to 8 bit serial data outputs. Figure 3 illustrates the location and settings for JP101. JP101 JP101 Figure 3. JP101 Jumper Settings... -
Page 23: Mii/Beta Format Configuration
Installation MII/BETA Format Configuration JP102 alters the parameters associated with the BETA and MII input selector switch on the front panel. It provides selection of US (setup 7.5 IRE present) or JAPAN (no setup 0 IRE) versions of the 525 line BETA and MII CAV formats. Figure 4 illustrates the location and settings for JP102. -
Page 24: Gbr Format Internal/External Sync Selection
SMS 8301A Component Analog Video to Serial Component Digital Converter GBR Format Internal/External Sync Selection JP103 selects a synchronizing pulse source for the GBR input CAV format, it does not affect the sync source for other CAV input formats. For all other CAV formats, the input Y channel sync is used as a reference regardless of the position of JP103. -
Page 25: Chroma Filter Selection
Installation Chroma Filter Selection JP600 selects digital chroma channel low pass filter responses. In the NORMAL position, the chroma channel filter response is very flat and has a rapid roll off at the high frequency cutoff. The fast cutoff of the NORMAL filter can result in some overshoots and ringing on fast waveform edges but provides the best frequency response if the same video must be filtered multiple times. -
Page 26: External Sync Source
SMS 8301A Component Analog Video to Serial Component Digital Converter External Sync Source JP900 selects an external sync source. Position A selects the loop through frame reference. Position B selects a terminating reference input used for this module only. NOTE: JP900 does not have to be set unless GBR Format Internal/ External Sync Selection (JP103) is in the External Ref position. -
Page 27: Module Installation
Installation Module Installation Follow the steps listed below to install a module into the SMS 8000 Frame. Insert the module into the frame so that the left and right edges of the module slide inward between the card guides. Press the front-panel retaining/ejecting tab in to lock the module in place. -
Page 28: Rear Connectors
SMS 8301A Component Analog Video to Serial Component Digital Converter Rear Connectors Inputs/Outputs The frame rear panel for each module consists of six BNCs, and one 9-pin D connector. Each module uses a unique overlay which labels the connector set appropriately for the function of that module. -
Page 29: Front Panel Controls/Displays
Installation Front Panel Controls/Displays The 8301A Front Panel Controls and Displays are discussed in the six categories listed below: Front Panel Input Format Y Black Level Control Gain Controls H Timing Controls Ref Present LED... -
Page 30: Front Panel
SMS 8301A Component Analog Video to Serial Component Digital Converter Front Panel The 8301A Front Panel consists of five trim pots, a five position rotary switch, a sixteen position rotary switch, a reference present LED, and 6 test points (2 GND, GAIN CAL, TRIGGER, +5V and -5V). -
Page 31: Y Black Level Control
Installation Table 2 lists the nominal signal levels for the video formats with 100% saturated color bar signal and 100% luminance. Table 2. Signal Levels Peak to Peak Format Y Channel Level Chroma Level MII (US 525) 647.5mV video 647.5 mV plus 52.5 mV setup MII (Japan 525) 700mV... -
Page 32: Gain Controls
SMS 8301A Component Analog Video to Serial Component Digital Converter Gain Controls The three gain controls can be adjusted via two methods, both of which require a known CAV input level. One method requires the use of a calibrated digital waveform monitor to observe the serial digital output. - Page 33 Installation The calibration waveform consists of a four-video-line sequence within an eight line sequence. It starts with a line which contains the upper 1/4 of the 10-bit Y channel dynamic range and a Y channel 100% peak reference level. The next two lines are the upper or lower 1/8 of the C then C channel 10-bit dynamic...
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Page 34: Ref Present Led
SMS 8301A Component Analog Video to Serial Component Digital Converter Full Scale Limit Waveforms Shown for 100% Y and 100% Saturated Color Bar Input Level Varies Level Varies as Gain is as Gain is Adjusted Adjusted Level Varies as Reference... -
Page 35: Module Alignment
Module Alignment Module Alignment This Section contains: Alignment Equipment Free Run Frequency Adjustment Frequency Response Adjustment Y/G Ref H Phase Adjustment Alignment Equipment The 8301A is fully aligned at the factory and normally requires no adjustments in the field. If adjustments are necessary, they should be attempted only by qualified technicians using, at a minimum, the following equipment (or equivalents): Tektronix GVP Deserializer M9103... -
Page 36: Free Run Frequency Adjustment
SMS 8301A Component Analog Video to Serial Component Digital Converter Free Run Frequency Adjustment To adjust the Free Fun Frequency, follow the steps listed below. Place the module on an extender board. (Allow 5 minutes to reach operating temperature.) Remove Y/G video input signal. -
Page 37: Frequency Response Adjustment
Module Alignment Frequency Response Adjustment This adjustment sets the analog video frequency response from the module input to each A/D converter input. Follow the steps listed below. Connect GBR format 100% line sweep to module video inputs. Select GBR input format. Observe response with oscilloscope at TP7 and adjust Y/G Response C240 to obtain flat response to 5.5MHz. -
Page 38: Y/G Ref H Phase Adjustment
SMS 8301A Component Analog Video to Serial Component Digital Converter Y/G Ref H Phase Adjustment This adjustment sets the timing of the modules EAV/SAV digital timing reference output and digital H blanking. Follow the steps listed below: Remove shorting jumper on JP103 and short all three pins together using a small piece of wire. -
Page 39: Service
If the module is still not operating correctly, replace it with a known-good spare and return the faulty module to a designated Tektronix Grass Valley Products repair depot. Call your Tektronix Grass Valley Products representative for depot location. For jumper settings or adjustments, refer to the Module... - Page 40 SMS 8301A Component Analog Video to Serial Component Digital Converter...
- Page 41 Index Numerics 8/10 Bit Output Selection Digital Matrix 8301A Calibration Waveform Illustration 8301A Features 8301A Front Panel Environmental/Power Illustration Specifications 8301A Rear Connector Overlay External Reference Input Illustration External Sync Source Alignment Equipment Part 68 Format Inputs BETA Format Selection BETA Input Table Blanking Gate Limiter...
- Page 42 Index JP900 JP900 Jumper Settings Illustration Illustration 8301A Calibration Waveform 8301A Front Panel 8301A Rear Connector Block Diagram Local Horizontal Timing JP1 Jumper Settings Lock Phase Error Detector JP101 Jumper Settings JP102 Jumper Settings JP103 and JP200 Shorting Jumpers M - N JP103 Jumper Settings JP600 Jumper Settings MII Input...
- Page 43 Index V - W - X S100 Switch Vertical Blanking Width Selection Scrambler Serial Digital Y - Z Outputs Serializer Y Black Level Control Service Y Channel Delay Signal Levels Y/G Ref H Phase Adjustment Table Signal Processing Specifications Component Analog Video Input Environmental/Power Output Performance...
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Page 44: Index
Index Index-4...