The DigiDeck DVR is an ATAPI 2.5" hard disk based industrial multi-use DVR providing broadcast quality digital video. The DigiDeck PC digital video recorder records video to removable drives as QuickTime files for viewing on a PC, while still maintaining active analogue composite and Y/C outputs. The DigiDeck is the ideal replacement for analogue tape decks and laser disk players. It delivers all the advantages of clean digital images and the random access non-linear benefits of hard disk media, as well as the familiar transport controls, inputs and outputs found on current analogue VTRs. The intuitive front panel touch screen provides access to record and playback settings including user selectable compression, speed of play and play list management. |
Specifications | Inputs | Composite (BNC) and SVideo (Y/C) |
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| Outputs | Composite (BNC) and SVideo (Y/C)
Horizontal Resolution: Greater than 550 TV lines (at 4:1 compression) |
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| Video Standards | 525/60 (NTSC) or 625/50 (PAL) |
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| Video Input Decoder | Format: Digital 4:2:2 YCrCb
PAL 50 fields/second NTSC 60 fields/second
Digital Colour Space: YUV
Sampling: 13.5MHz
Pixel Resolution: 853 x 576 (PAL) 720x480 (NTSC)
S/N Ratio: 50dB
Bandwidth: 8MHz (-3dB)
Differential Gain: 2%
Differential Phase: 2 degrees
ADC Differential Linearity: +/- 0.7 LSB
ADC Intergral Linearity: +/- 1.0 LSB |
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| Video Output Encoder | Digial Colour Space YUV, 16 bits per channel
Analogue Bandwidth (Y/C): (Y) 6.75MHz (C) 1.3MHz
Analogue Bandwidth (Composite): 5.0MHz (PAL) 4.5MHz (NTSC)
DAC Resolution: 10 bits x 3
S/N Ratio: 60dB |
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| Video Compression | Method: JPEG
Compression Ratio: Variable down to 4:1 |
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| Memory | Multiport Frame Buffer: 8 MB DRAM
Aggregate Bandwidth: Greater than 45MB/s |
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| Microprocessor | Intel 80386EX 40MHz
Local ROM/EPROM: 1MB Flash EEPROM
Local SRAM: 1MB 0 wait state |
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| Audio Specifications | Resolution: 16bit
Sampling Rate, FS: 8KHz to 52KHz
Audio Channels: 2 in, 2 out (per video channel)
Dynamic Range: 80dB
Total Harmonic Distortion: 0.022%, -73dB
Intermodulation Distortion: -90dB
Crosstalk: -80dB
Interchannel Gain Mismatch: +/- 0.5dB
Input Voltage: 1VRMS nominal, 3V p-p max
Input Impedance: 20K ohms
Input Programmable Gain Span: 22.5dB
Full Scall Output Voltage: 0.707 VRMS, 2.0V p-p
Output Impedance: 600ohms
Output Attenuation Range: 94.5dB
Passband: 0.45 FS
Passband Ripple: +/- 0.1 dB |
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| SATA Disk Controller | Protocol: SATA
Maximum Data Rate: 16.6MB/s
Maximum Hard Drives: 1
Supported Hard Drives: Hitachi Cinema Star 2.5" - C5K320 (120,250,320GB) and Hitachi Enhanced 2.5" - 0A55263 |
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| Software | Optional: Machine Control Interface (Microsoft Windows Only) |
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| Included Accessories | Rack Ears, Manual |
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| Dimensions | 432 x 89 x 222mm [17 x 3.5 x 8.75 inches] (WxHxD) |
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| Warranty | 1 year |
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Features - Fully integrated Motion JPEG digital video recorder
- Analogue composite and S-Video (Y/C) video inputs and outputs
- Conforms to industry standard digital specification CCIR 601 4:2:2
- NTSC 60fld/s 30fld/s
- PAL 50fld/s 25fld/s
- Compression ratios from 4:1 to 20:1
- Two channels of unbalanced audio
- Front panel touch screen menu
- Dynamic Tracking
- Chase Lock
- Loop record
- Genlock input locks analogue video output to external sync
- RS422 machine control Sony / Odetics protocol
- Discrete access to every frame
- Instant cueing, clip recall
- Play list management and clip naming from the front panel
- Playing clips with different compression settings in one playlist
- Variable Speed Noise Free Playback, Forward and Reverse
- ATAPI 2.5inch hard drive interface for laptop hard drives
- Single Channel
- Optional: PC controlling software
- Includes 120GB Hitachi Hard Drive or equivalent
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Options There are two options for video output:
Option 1. S-Video [Y/C] & Composite output (default).
Option 2. Component & Composite output.
Please specifiy Component output if it is required, otherwise the default S-Video [Y/C] output will be supplied. There is no extra cost for Component output. Please not there are seperate items for removable drives, and dual channel units, available in the Fast Forward category. |
Rear Connections |
M-JPEG Compression The M-JPEG compression ratio setting on all Fast Forward Video products are user selectable from 4:1 to 20:1. In practice, it is advisable to set the compression to correspond with the best quality to storage ratio. A setting of 7:1 is a good setting for general purpose Betacam images, 10:1 for S-VHS, 15:1 for VHS. The rule of thumb for minutes of storage generally available is compression ratio is roughly equivalent to minutes per gigabyte. For example: 10:1 compression ratio x 80 gigabytes = 10 x 80 = roughly 800 minutes recording time, or approximately 12 hours. |
Controlling Multiple DigiDeck There are three practical ways control more than one FFV DigiDeck simultaneously: 1. Use the Playback Technologies Raptor Software.
The Raptor software runs on Windows XP/2000 and can control up to 128 DigiDecks via RS-422 at once. The Digi EdgePort USB2.0 to RS-232 port (1, 2, 4, 8 or 16 port) converters are an easy way to add more RS-232 ports to a PC. We highly recommend the RS-232 version of the Edgeport and the RS-422-to-RS-232 adaptors, because we have not been able to get the RS-422 version of the EdgePort series to work. This is a popular solution for monitoring races. 2. Use an broadcast VTR control unit.
The DigiDecks use the standard Sony�� RS-422 control protocol, so anything that would control a Sony VTR (eg, BVW75) would control one of these. Fast Forward recommend the controllers made by Lance Design. 3. Develop or get developed, hardware or software which controls the DigiDecks.
The control protocol document is available under the summary section to the right. This lists all of the RS-422 commands required to send and receive commands to and from a DigiDeck. You could develop a simple or complex bit of hardware or software based around this protocol. |
