GRASS VALLEY SMS 8301A Instruction Manual Download Page 37 | Manualshive

Page: 37 / 44

background image

25

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.

1.

Connect GBR format 100% line sweep to module video
inputs.

2.

Select GBR input format.

3.

Observe response with oscilloscope at TP7 and adjust Y/G
Response C240 to obtain flat response to 5.5MHz.

4.

Observe response at TP12 and adjust B/B-Y Response C340 to
obtain flat response to 5.5MHz.

5.

Observe response at TP16 and adjust R/R-Y Response C401 to
obtain flat response to 5.5Mhz.

NOTE:

If a source of line sweep flat to 6MHz is available response

adjustments should be made to provide flat response to this frequency.

347301A1.book Page 25 Thursday, November 2, 2000 10:41 AM

«
...
35
36
37
38
39
...
»

Summary of Contents for SMS 8301A

Page 1: ...SMS 8301A COMPONENT ANALOG VIDEO TO SERIAL DIGITAL CONVERTER Instruction Manual TP3473 01 FIRST PRINTNG AUGUST 1995 REVISED PRINTNG DECEMBER1997 ...

Page 2: ...ents issued and pending Product options and specifications subject to change without notice The information in this manual is furnished for informational use only is sub ject to change without notice and should not be construed as a commitment by Grass Valley Group Grass Valley Group assumes no responsibility or liability for any errors or inaccuracies that may appear in this publication Region Vo...

Page 3: ...S 8301A Component Analog Video to Serial Component Digital Converter Introduction 1 Function 2 Signal Processing 4 Timing and Control 5 Specifications 6 Installation 8 Module Configuration 8 Vertical Blanking Width Selection 9 8 10 Bit Output Selection 10 MII BETA Format Configuration 11 GBR Format Internal External Sync Selection 12 Chroma Filter Selection 13 External Sync Source 14 Module Instal...

Page 4: ... Black Level Control 19 Gain Controls 20 Ref Present LED 22 Module Alignment 23 Alignment Equipment 23 Free Run Frequency Adjustment 24 Frequency Response Adjustment 25 Y G Ref H Phase Adjustment 26 Service 27 Index Index 1 347301A1 book Page vi Thursday November 2 2000 10 41 AM ...

Page 5: ...ngs 11 Figure 5 JP103 Jumper Settings 12 Figure 6 JP600 Jumper Settings 13 Figure 7 JP900 Jumper Settings 14 Figure 8 8301A Rear Connector Overlay 16 Figure 9 8301A Front Panel 18 Figure 10 8301A Calibration Waveform 22 Figure 11 JP103 Jumper Settings 24 Figure 12 JP103 and JP200 Shorting Jumpers 26 347301A1 book Page vii Thursday November 2 2000 10 41 AM ...

Page 6: ...vi Contents List of Tables Table 1 Format Selection 18 Table 2 Signal Levels 19 347301A1 book Page viii Thursday November 2 2000 10 41 AM ...

Page 7: ...qualified service personnel only To reduce the risk of electric shock do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so Symbols and Their Meanings in This Manual The lightning flash with arrowhead symbol within an equilateral triangle alerts the user to the presence of dangerous voltage within the product s enclosure that may be ...

Page 8: ...nding 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 347301A1 book Page x Thursday November 2 2000 10 41 AM ...

Page 9: ...wer is on Do not wear hand jewelry or watches when troubleshooting high current circuits such as the power supplies During installation do not use the door handles or front panels to lift the equipment as they may open abruptly and injure you To avoid fire hazard use only the replacement parts with specified correct type voltage and current rating as referenced in the appropriate parts list for th...

Page 10: ...nual To prevent equipment damage select the proper line voltage at the AC input connector as described in the installation documentation Ensure that the two power supply cords are each plugged into a separate branch circuit in case one circuit should fail Circuit boards in this product are densely populated with surface mount and ASIC components Special tools and techniques are required to safely ...

Page 11: ... black line and green or green yellow ground Operation of this equipment at voltages exceeding 130 VAC will require power supply cords which comply with NEMA configurations International Power Supply Cord This equipment is supplied with a molded grounding receptacle IEC 320 C13 at one end and stripped conductor 50 5 mm at the other end Conductors are CEE color coded light blue neutral brown line a...

Page 12: ... 1 This device may not cause harmful interference 2 This device must accept any interference received including interference that may cause undesirable operations 89 336 EEC EMC Directive EN500081 1 EN55022 WARNING This is a Class A product In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures 347301A1 book Page xiv Thu...

Page 13: ...converts it to an 8 or 10 bit 270 Mb s serial component digital signal per SMPTE 259M EBU Tech 3267 standard 8301A features are Automatically selects between 525 and 625 lines Selectable Chroma Channel Bandwidth Gain Calibration Display Ten Bit A D Conversion Selectable Ten Bit Output or Dynamic Rounding to 8 Bits Oversampling A D Conversion Input selectable MII BETA EBU N10 or GBR Digital Filteri...

Page 14: ...hat follow Figure 1 8301A Block Diagram Y G B Y B R Y R External Reference Input Analog Processing and Filtering A D Converter and Digital Filter Y G B Y B R Y R Amplifiers and Reference Selector Sync Separator Reference Vertical Detector Ref Video Sync Lock Phase Error Detector Ref Horiz Y G B Y B R Y R Digital Matrix with Bypass Timing and Control Signal Processing 347301A1 book Page 2 Thursday ...

Page 15: ...Y B Y R Y Calibration Display Generator Blanking Gate Limiter and Rounder Y B Y R Y Calibration Display Test Point 27 MHz and 13 5 MHz Clocks Horiz Timing Signals 525 625 Control Vertical Timing Signals Y Chroma CCIR 601 Encoder CCIR Scrambler and Serializer 601 Serial Digital Outputs Freq Control Format Select Switch Remote Monochrome Control System Control Micro Controller System Control Outputs...

Page 16: ...eam The Y Channel Delay delays the Y signal to compensate for the delay introduced into the B Y and R Y channels by the Chroma Channel Lowpass Filters The Calibration Display Generator uses the delayed Y channel and the multiplexed B Y and R Y channels to produce a signal which can be observed on an oscilloscope connected at the module front panel The resulting display contains all three channels ...

Page 17: ... which generates a reference vertical pulse Ref Vertical to the Ref Sync Presence Detector and the Vert ical Timing Generator and Auto Standard Logic circuit blocks The 27MHz VCXO generates the master clock for the video A D converters The Horizontal Timing Generator generates a horizontal rate square wave which drives the previously mentioned Lock Phase Error Detector to create a phase error volt...

Page 18: ... frame reference or individual module reference 75Ω terminating Input Signal Type Color Black Return Loss 40dB to 5 0MHz Level 300mV sync 6dB Timing Within 2µS of video input Output Signal Type Serial component digital conforming to proposed SMPTE 259M EBU Tech 3267 standard Connectors Two 2 75Ω BNCs Impedance 75Ω Return Loss 15 dB 5MHz to 270MHz Output DC Zero volts ac coupled Performance A to D ...

Page 19: ... 19 lines Wide 625 selectable 9 lines Narrow or 25lines Wide Electrical Length 5 05µS Standards Selection Automatic 525 625 Black Level Accuracy Maintained to full 10 bit by drift free digital clamps Y channel black level trim adjustment provides 20mV correction for input video setup errors on input formats with setup Analog Gain andY Black Calibration Test point provided to allow observation of i...

Page 20: ...ule Configuration When installing the 8301A module six jumpers must be checked and or set Vertical Blanking Width Selection Jumper JP1 8 10 bit Output Selection Jumper JP101 MII BETA Format Configuration Jumper JP102 GBR Format Internal External Sync Selection Jumper JP103 Chroma Filter Selection Jumper JP600 External Sync Source Jumper JP900 347301A1 book Page 8 Thursday November 2 2000 10 41 AM ...

Page 21: ...ween 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 Figure 2 JP1 Jumper Settings OR JP1 JP1 NARROW WIDE NARROW WIDE 347301A1 book Page 9 Thursday November 2 2000 10 41 AM ...

Page 22: ... 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 Figure 3 JP101 Jumper Settings OR JP101 10 BITS 8 BITS JP101 10 BITS 8 BITS 347301A1 book Page 10 Thursday November 2 2000 10 41 AM ...

Page 23: ...witch 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 Figure 4 JP102 Jumper Settings JP102 JAPAN US JP102 JAPAN US OR 347301A1 book Page 11 Thursday November 2 2000 10 41 AM ...

Page 24: ...ion of JP103 If the GBR source has sync on the green channel JP103 should be placed in the G INPUT position If the GBR source does not have sync present on the green channel an external reference input is required and JP103 must be placed in the EXT REF position NOTE The external reference input can be used even though the G input has sync present if desired Figure 5 illustrates the location and s...

Page 25: ...ual which results in less ringing and waveform distortion of fast waveform edges This gradual roll off will result in deteriorating high frequency response if the same video must be filtered multiple times Because of the increased attenuation of the SLOW filter at the Nyquist frequency 3 375 MHz this filter response may be preferred if large amounts of energy are present in the video signal near t...

Page 26: ... position If a common reference can be used for all modules in the frame which require a reference JP900 should be placed in Position A Alternately if a separate reference is required JP900 should be placed in Position B For example if modules needing 525 and 625 line standard references are both present in a single frame position B should be used on module needing the alternate sync source Figure...

Page 27: ... left and right edges of the module slide inward between the card guides 2 Press the front panel retaining ejecting tab in to lock the module in place 3 Additional information concerning the frame and power supply installation is located in the SMS 8000 Frame and Power Supply Manual part number TP3465 347301A1 book Page 15 Thursday November 2 2000 10 41 AM ...

Page 28: ...rface Ensure that the rear connector overlay on the rear of the frame is in the correct location Figure 8 illustrates the 8301A rear connector overlay Figure 8 8301A Rear Connector Overlay Remote 9 pin D connector J7 provides a remote input at pin 5 which if pulled to ground will force the 8301A modules chroma channels off to create a monochrome output An output at pin 8 will indicate if the modul...

Page 29: ...s 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 347301A1 book Page 17 Thursday November 2 2000 10 41 AM ...

Page 30: ...rmat select switch S100 must be set to conform to the CAV input signal format being used Table 1 lists the format selections Table 1 Format Selection Input Format Select Switch Positions 1 MII 525 line only 2 BETA 525 line only 3 EBU N10 used for 625 line MII and BETA 4 SMPTE 5 GBR 5V GND 5V SMS 8301 COMPONENT A D PRESENT REF INPUT FORMAT Y BLACK 1 MII 2 BETA 3 EBU NI0 4 SMPTE 5 GBR 0 1 2 3 4 5 6 ...

Page 31: ...vel on the Y video input The output Y channel black level will be held fixed by a digital clamp when using other formats and the control will not function Table 2 Signal Levels Format Y Channel Level Peak to Peak Chroma Level MII US 525 647 5mV video plus 52 5 mV setup 647 5 mV MII Japan 525 700mV 700mV BETA US 525 660 4mV video plus 53 6mV setup 933 3mV BETA Japan 525 714mV 1009mV EBU N10 700mV 7...

Page 32: ...are then adjusted to produce correct levels for all channels as observed on the waveform monitor Each input gain control operates independently If the GBR format is used the gain controls will interact The B and R gain controls should be adjusted to place the positive peaks of the output CB and CR waveforms at the correct levels The G gain control should be adjusted so the Y channel level is corre...

Page 33: ...the Y channel lines but with the opposite end upper or lower of the chroma channels being displayed See figure 11 for typical example of calibration display with 100 full field color bar input and last bar at black level The waveform presents a magnified view of peak digital video levels as compared to digital reference levels The module video gain controls can be adjusted to make the video peak l...

Page 34: ...An LED is provided to indicate when a reference signal is present Waveforms Shown for 100 Y and 100 Saturated Color Bar Input Reference Level Reference Level Reference Level Reference Level Reference Level Reference Level Level Varies as Gain is Adjusted Level Varies as Gain is Adjusted Ref Level Varies as Y Black Level is Adjusted Lower Limit of Cal WFM Range Fixed Ref B Y Gain Cal 1 Line Full Sc...

Page 35: ...ments are necessary they should be attempted only by qualified technicians using at a minimum the following equipment or equivalents Tektronix GVP Deserializer M9103 Tektronix 2465B Oscilloscope HP 5384A Frequency Counter Test signal generator Tektronix TSG 300 Digital signal analyzer Viewtronics LTD DIGIVIEW NOTE SMS 8000 Series extender module assembly 160007 may be used to position a module out...

Page 36: ...nal 3 Set Jumper JP103 in the G INPUT position if it is not already in that position Refer to Figure 11 below for jumper location 4 Observe frequency at test connector P500 pin 12 end pin near TP18 with frequency counter 5 Adjust R960 for a frequency of 13 5MHz 25Hz 6 When calibration is complete set JP103 in the previous position if it was moved Figure 11 JP103 Jumper Settings JP103 EXT REF G INP...

Page 37: ...serve response with oscilloscope at TP7 and adjust Y G Response C240 to obtain flat response to 5 5MHz 4 Observe response at TP12 and adjust B B Y Response C340 to obtain flat response to 5 5MHz 5 Observe response at TP16 and adjust R R Y Response C401 to obtain flat response to 5 5Mhz NOTE If a source of line sweep flat to 6MHz is available response adjustments should be made to provide flat resp...

Page 38: ...id scale by shorting all six pins of JP200 together with a short length of wire Refer to Figure 12 for jumper location 3 Change input format switch to position 3 to enable a test mode which inhibits digital blanking 4 Observe digital output with digital signal analyzer Adjust R929 to place analog sync leading edge 50 point at Y sample 736 for 525 line standard or 732 for 625 line standard 5 Remove...

Page 39: ...s Check cables and connections Check switch positions on front panel Verify source equipment is operating correctly Check output connections 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 ...

Page 40: ...28 SMS 8301A Component Analog Video to Serial Component Digital Converter 347301A1 book Page 28 Thursday November 2 2000 10 41 AM ...

Page 41: ...lay Generator 4 CCIR601 Encoder 4 Chroma Channel Lowpass Filters 4 Chroma Filter 13 Component Inputs 16 Component Analog Video Specifications 6 D Digital Matrix 5 E Environmental Power Specifications 7 External Reference Input 6 External Sync Source 14 F FCC Part 68 xiv Format Inputs 18 Format Selection Table 18 Free Run Frequency Adjustment 24 Frequency Response Adjustment 25 Front Panel 18 Front...

Page 42: ...ings Illustration 11 JP103 12 24 26 JP103 and JP200 Shorting Jumpers Illustration 26 JP103 Jumper Settings Illustration 12 24 JP200 26 JP600 13 JP600 Jumper Settings Illustration 13 JP900 14 JP900 Jumper Settings Illustration 14 L Local Horizontal Timing 5 Lock Phase Error Detector 5 M N MII 19 20 MII Input 11 MII BETA Format Configuration 11 Module Alignment 23 Module Configuration 8 Module Insta...

Page 43: ...nput 6 Environmental Power 7 Output 6 Performance 6 Switch S100 18 Sync Selection 12 Sync Separator 5 T U Table Format Selection 18 Signal Levels 19 Timing and Control 5 Timing Generator 5 TP1 20 TP24 20 V W X Vertical Blanking Width Selection 9 Y Z Y Black Level Control 19 Y Channel Delay 4 Y G Ref H Phase Adjustment 26 347301A1 book Page 3 Thursday November 2 2000 10 41 AM ...

Page 44: ...Index 4 Index 347301A1 book Page 4 Thursday November 2 2000 10 41 AM ...

Reviews:

No comments

Related manuals for SMS 8301A

Brand: UNICOM Pages: 1

Brand: Quanmax Pages: 44

MONO MIXER SERIES

Brand: Audioplex Pages: 1

Brand: ICP DAS USA Pages: 43

Brand: Hoymiles Pages: 29

Brand: Black Box Pages: 20

Y/C to NTSC Conversion PCN-40

Brand: Link Pages: 2

Brand: Wirez Pages: 16

Brand: Solplanet Pages: 75

Brand: Peachtree Audio Pages: 15

Brand: Daewoo Pages: 27

Brand: Digitrax Pages: 8

Brand: Fronius Pages: 135

Brand: Interlogix Pages: 20

Brand: Tesla Pages: 19

NX Distributed Intelligence NX MEDIA CONVERTER

Brand: Hubbell Pages: 3

Brand: Kramer Pages: 12

Brand: Tascam Pages: 72

Brands by name

0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Popular brands

Load more brands