Related Manuals for GRASS VALLEY SMS 8301A-K
Summary of Contents for GRASS VALLEY SMS 8301A-K
- Page 1 Instruction Manual TP3507- 01 FI RST PR I NTNG: A UGUST 199 3 R EVI SE D P RI NTNG: APRIL 199 8 S MS 83 01A -K K E Y T O S E R I A L C O M P O N E N T 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-K Key to Serial Component Digital Converter Introduction ........... . - Page 4 Contents Front Panel ..........Input Format .
- Page 5 Contents List of Illustrations Figure 1. 8301A-K Block Diagram ......Figure 2. JP1 Jumper Settings ....... Figure 3.
- Page 6 Contents List of Tables Table 1. Format Selection ........
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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-K Key To Serial Component Digital Converter
Modules are selected by the user to suit their particular requirements. The SMS 8301A-K Key to Serial Component Digital Converter Module accepts an analog video (Key Signal) input (525 or 625 line) and converts it to the Y channel of an 8 or 10 bit 270 Mb/s serial component digital signal per SMPTE 259M/EBU Tech 3267 standard. -
Page 14: Function
SMS 8301A-K Key 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 Local Horizontal Timing Sync... - Page 15 Function Format Select System Control Ref Sync Switch System Free Run Presence Micro Control Control Detector Controller Outputs Ref Vertical Local Horizontal Timing Vert Timing Freq 27MHz VCXO Horizontal 2H Clock 13.5 Generator Timing and Auto Divider Generator Control Standard Logic 27 MHz and 13.5 MHz Horiz Timing 525/625...
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Page 16: Signal Processing
An A/D converter samples the video at 27MHz and converts it to 10–bit data. The Key Delay delays the signal to make the time delay introduced by the SMS 8301A-K match the delay of the SMS 8301A module. The Calibration Display Generator uses the delayed Key/Y channel to produce a signal which can be observed on an oscilloscope connected at the module front panel. -
Page 17: Timing And Control
Function Timing and Control The Microcontroller interfaces between front panel controls and the crosspoints and Blanking Gate Limiter and Rounder circuits. The external and internal (key input) reference inputs are amplified and then fed to a selector. The selected reference is low pass filtered to remove burst (present if the reference was color black) and fed to a Sync Separator. -
Page 18: Specifications
SMS 8301A-K Key to Serial Component Digital Converter Specifications Specifications are subject to change without prior notice. Component Analog Video Input Input Connectors 1 BNC terminating Input Impedance 75Ω Input Return Loss >40dB to 5.5MHz Input Formats Front panel selection to support nominal video input levels not including sync of 700mV p-p with no setup or 714mV p-p with setup. - Page 19 Specifications Performance A to D Conversion Two times Oversampled (27MHz) 10 bits Output Data Bits Switchable between 10 or rounded to 8 with on board jumper Vernier Analog Gain Front of module gain control provides ±1dB gain Control range with respect to selected 700mV or 714mV with setup nominal input levels Frequency Response ±0.1dB to 6MHz ref.
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Page 20: Installation
SMS 8301A-K Key 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-K module, check and/or set the following four jumpers: Vertical Blanking Width Selection Jumper, JP1... -
Page 21: Vertical Blanking Width Selection
Installation Vertical Blanking Width Selection JP1 selects between Narrow or Wide of 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 8301A-K Figure 2. -
Page 22: 8/10 Bit Output Selection
SMS 8301A-K Key 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 8301A-K Figure 3. JP101 Jumper Settings... -
Page 23: Internal/External Sync Selection
Installation Internal/External Sync Selection JP103 selects a synchronizing pulse source for the module. If the key video source has sync, JP103 should be placed in the G INPUT position. If the source does not have sync present, an external reference input is required and JP103 must be placed in the EXT REF position. -
Page 24: External Sync Source
SMS 8301A-K Key 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 needs to be set if Internal/External Sync Selection (JP103) is in the External Ref position. -
Page 25: 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 26: Rear Connectors
SMS 8301A-K Key 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 27: Front Panel Controls/Displays
(two positions are used for the 8301A-K), a sixteen position rotary switch, a Reference Present LED, and 6 test points (2 GND, GAIN CAL, TRIGGER, +5V and (-5V). The front panel is illustrated in Figure ø COARSE SMS 8301A-K INPUT ø BLACK GAIN FORMAT 6=NO SETUP... -
Page 28: Input Format
SMS 8301A-K Key to Serial Component Digital Converter Input Format Input format select switch S100 must be set to conform to the input key signal format being used. Table 1 lists the format selections. Table 1. Format Selection Input Format Select Switch Positions... -
Page 29: Gain Control
Installation Gain Control The front of module gain control can be adjusted via two methods both of which require a known input level. One method requires the use of a known calibrated digital waveform monitor to observe the serial digital output. An alternate method requires the use of an oscilloscope to observe a calibration adjustment waveform generated by the 8301A-K. -
Page 30: Figure 8. 8301A-K Calibration Waveform
SMS 8301A-K Key to Serial Component Digital Converter The calibration waveform presents a four times magnified view of peak digital video levels as compared to digital reference levels. The module gain control and black level (for inputs with setup) can thus be adjusted to make the video peak levels match as closely as possible the appropriate reference level. -
Page 31: Ref Present Led
Installation H Timing Controls If external reference sync is being used, the external reference coarse and fine H timing controls will be functional. These controls must be adjusted to correctly position the output with respect to the digital timing information added by the module. The position can be observed either with a digital waveform monitor or with a serial digital to analog converter feeding a picture monitor. -
Page 32: Module Alignment
SMS 8301A-K Key to Serial Component Digital Converter Module Alignment This Section contains: Alignment Equipment Free Run Frequency Adjustment Frequency Response Adjustment Y/G Ref H Phase Adjustment Alignment Equipment The 8301A-K is fully aligned at the factory and normally requires no adjustments in the field. -
Page 33: Free Run Frequency Adjustment
Module Alignment 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 video input signal. Set Jumper JP103 in the G INPUT position (if it is not already in that position). -
Page 34: Frequency Response Adjustment
SMS 8301A-K Key to Serial Component Digital Converter Frequency Response Adjustment This adjustment sets the analog video frequency response from the module input to the A/D converter input. Follow the steps listed below: Connect 100% level line sweep to module video inputs. -
Page 35: Figure 10. Jp103 And Jp200 Shorting Jumpers
Module Alignment Replace the shorting jumper on JP103 that was previously removed. JP103 8301A-K Figure 10. JP103 and JP200 Shorting Jumpers... -
Page 36: Service
SMS 8301A-K Key to Serial Component Digital Converter Service The 8301A-K Key to Serial Component Digital Converter module makes extensive use of surface mount technology and programmable parts to achieve compact size and adherence to demanding technical specifications. Circuit modules should not be serviced in the field. - Page 37 Index Numerics 8/10 Bit Output Selection FCC Part 68 8301A-K Calibration Waveform Format Selection Illustration Table 8301A-K features Frame Ground Connections 8301A-K Front Panel Free Run Frequency Adjustment Illustration Frequency Response Adjustment 8301A-K Rear Connector Overlay Front Panel Illustration Front Panel Controls/Displays Alignment Equipment Gain Control Analog Processing...
- Page 38 Index P - Q Part 68 Performance JP1 Jumper Settings Specifications Illustration JP101 JP101 Jumper Settings Rear Connectors Illustration Ref Present LED JP103 Reference Sync JP103 and JP200 Shorting Jumpers Reference Vertical Detecto Illustration Remote JP103 Jumper Settings Illustration JP900 JP900 Jumper Settings S100 Illustration...