Related Manuals for Sony D8MM-01
Summary of Contents for Sony D8MM-01
- Page 1 Training Manual Digital Camcorder Circuit Description and Troubleshooting Course: D8MM-01...
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Page 2: Table Of Contents
Table of Contents D8 Record Introduction D8 Playback New Camcorder Features Analog 8mm Playback 8mm and Hi 8 XR (Extended Resolution) D8 Record/Playback Laser Link D8 Record Nightshot D8 Playback IEEE-1394 Analog 8mm Playback Advantages Audio Signal Block Hardware D8 Record Protocol D8 Playback Cable Technology... -
Page 3: Introduction
Much of the new D8 circuitry will not be troubleshot to component level. Introduction That is because the main board, VC-213, contains components that use BGA technology. BGA stands for Ball Grid Array. This means that the Overview leads for these components are actually balls that are located underneath the IC. - Page 4 NOTES...
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Page 5: New Camcorder Features
Overview picture quality (resolution). In this section we will briefly discuss three new features found in Sony camcorders. These features include 8mm and Hi8 XR, Night Shot and Laserlink. These features can be used in any camcorder, analog or digi- tal, with the exception of 8mm XR, which is exclusive to 8mm camcorders. -
Page 6: Laserlink
Laserlink is a feature in Sony camcorders that sends Sircs information ployed. The result would be a standard resolution recording. and audio/video signals via infrared emitter to a Sony TV and an optional IR receiver. There is no noticeable loss of picture quality between Laserlink and composite video. -
Page 7: Nightshot
NightShot NightShot is the name Sony has given to its 0 Lux system. 0 Lux means that camcorders with this feature can literally see in the dark. How is this miraculous feature possible? The main technology used for NightShot has been inherent in the camcorder lens system for years. -
Page 8: Ieee-1394
Peer to peer communications are possible. Any device should com- IEEE-1394 municate with any other device without a need for a hub or a PC to be connected. Overview IEEE-1394 is high-speed digital interface that can be used by many types of products, including computers and consumer electronics. -
Page 9: Protocol
Transaction Layer – Manages asynchronous data protocols. This Dynamic Node Addressing layer is also responsible for communicating between a device that is Each device, called a node, is assigned a specific address. This occurs using IEEE 1394, such as a digital camcorder or a capture card, and when a bus reset occurs or a new device is added to the system. -
Page 10: Cable Technology
A standard six-wire cable is used by the PC industry as an IEEE-1394 which is the Sony trademark. connection. There is also a four-wire connection used by Sony and other Future Developments manufacturers on digital camcorders and similar devices. The six-wire... -
Page 11: Digital 8 Introduction
Digital 8 format, the recording time will be half what it would be in a Digital 8, or D8, is a new format developed by Sony. It is not an extension standard analog 8mm format. This means that an E6-120 type cassette... -
Page 12: Digital 8 Additional Features
SteadyShot utilizes motion sensors located in the lens assembly area that are designed to sense camcorder motion i.LINK – This is Sony’s IEEE1394 interface. It allows you to edit, dub, archive or playback between two digital components with virtually no generation loss. -
Page 13: Digital 8 Format
In the D8 system, the heads put five swipes or tracks on the tape for each Digital 8 Format frame of video. These swipes are broken down into sub tracks and there are two sub tracks for every track. The reason for this is to keep the Overview technology similar to the DV format, which uses ten tracks per frame of video. -
Page 14: Tape Speed
Tape Speed A n a l o g 8 m m D i g i t a l 8 T r a c k I n f o r m a t i o n A n a lo g D ig it a l Since the drum speed was increased, there became a need to also in- T r a c k s p e r f r a m e... -
Page 15: Sub Track Information
Sub Track Information The sub track information can be broken down into four distinct sectors. These are called the ITI, Audio, Video and Subcode sectors. Each of these sectors is separated by a gap. These gaps are there to allow for small tracking errors that may occur when editing. -
Page 16: Tape Wrap Angle
Tape Wrap Angle D8 uses the B mechanism and also does not need the entire 211 degree wrap. D8 uses switching to limit the effective wrap angle to 177 degrees. The tape wrap angle for an analog 8mm system must be at least 180 The first 87 degrees of this effective wrap are used to put down the first degrees for video to be recorded. -
Page 17: Video Signal Block
Head Amp Video Signal Block The head amp adds a clock signal and amplifies the data. It is then ap- plied to the heads and recorded on the tape. Overview D8 Playback The purpose of this section is to discuss the three different video paths. Head Amp The three paths are D8 record, D8 playback and analog 8mm playback. -
Page 19: D8 Record/Playback
Compression Block D8 Record/Playback The block diagram below outlines the steps that need to be taken to com- press the amount of video data from 162 Mbps to 25 Mbps. Each frame Overview of video is processed alone. This is called Intra-frame compression. It is The purpose of this section is to explain the theory of the digital video different from MPEG 2 because the MPEG system does not compress each frame individually. - Page 21 The following explains the compression process as the 1999 D8 models use it. Each IC’s purpose is examined to provide you with a better under- standing of the whole process. IC351 VFD Video Encode IC351 also contains a NTSC encoder so that it may send composite sig- nals to the IR Out and Video Out, and component video to the viewfinder and LCD if applicable.
- Page 23 IC643 AOI Audio Signal Interleave The audio data is interleaved into the video data. However, it is not pro- The Y and C signals are output by IC351 VFD and then input to IC643 cessed by the video compression circuitry. The audio data is held in RAM AOI.
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Page 25: D8 Playback
IC104 TRX IC102 TRW The data passes through this IC. No operations are performed here dur- The signal is received from the heads, combined and amplified. RF is ing record. output from two different pins, one for analog and another for digital. IC102 TRW IC103 TRF REC Amplifier... - Page 27 IC302 TFD IC351 VFD Channel Decoding De-shuffling The incoming data stream now has the Sync, ID and ITI data removed Now that decompression is complete the data must be put back in its from it for processing. The interleaved video and audio data continue on original position.
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Page 29: Analog 8Mm Playback
IC351 VFD Analog 8mm Playback This IC performs the same task as it would for a D8 record signal. This is because the analog 8mm signal is going to be processed so its signal can Analog 8mm Playback be output on the IEEE 1394 bus. It should be noted here that the data IC102 TRW output here does not contain time code information. -
Page 31: Audio Signal Block
D8 Playback Audio Signal Block When the heads read the signal, it first goes to the Head Amp. This signal contains audio and video information that is interleaved together. The Overview DSP/Decompression block processes this signal. This block sends the The purpose of this section is to discuss the three different audio paths. -
Page 33: Servo Block
The drum FG pulses are used to determine the drum speed in play mode. Servo Block The drum FG signal should be 450Hz. Drum phase is controlled by com- paring the Xtal oscillator signal to the Drum PG pulses. Overview Capstan The servo block in a D8 camcorder must control the mechanism for two The capstan FG pulses determine the capstan speed in record mode. -
Page 35: Mech Initialization
Three extra bit patterns are used to create three different signals during The mech will attempt to reverse play the tape in the analog 8mm playback. These are called F0, F1 and F2. The F0 tracks do not contain mode. This attempt is aborted when the clear leader is seen. a pilot signal. -
Page 37: Power Supply
If there are no signs of life from the RM-95 you can start by checking for battery charging system. In the past, Sony camcorder batteries were Ever 3V at CN911/38. If this voltage is present it is probable that the charged on a separate charging unit. -
Page 38: Asc D8 Fru System
ASC D8 FRU SYSTEM RECEIVE DIGITAL 8 C A M C O R D E R D 8 R E F E R E N C E C H A R T MODEL BOARD PART # EEPROM DCR-TR7000 A7094280A DCR-TRV110, P E R F O R M PAGE C &... -
Page 39: Radar W
WRPC, Part #J-6082-429-A. Software can be down- loaded from the appropriate Sony web page. More information will follow. See your Tech Rep if there is a problem. -
Page 40: Upload/Download
Return, Read and Write. Return will return the data values to their previ- Upload/Download ous state if they have been changed. Read will read the data from the To upload the data from the camcorder, press the Read button. The camcorder, and Write will write a specific file to the camcorder. - Page 41 If we select Save of full page, the following screen will appear. Next, select the file (named by serial number) that you want by left click- ing it with the mouse. After this, left click the Load button. This will bring you back to the Data handling window.
- Page 42 Adjustment The following screen will appear. Click OK. This ends the adjustment and returns you to the Adjustment menu. We will not be doing any more We now talk about using the adjustment section of the Radar W software. Auto Adjustments since the software is still in development at the time of This section allows us to do automatic adjustments.
- Page 43 Test Diagnosis will bring up a window that shows you the Self Diagnostic his- tory and the present Emergency codes. These can be read from the The test section of the Radar W software is accessed by choosing Test camcorder by pressing the Read button in that window. You can also from the Main Menu.