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Monochrome / Color:

Number of Video Inputs:

Maximum Image Capture Rate:

images per second

Image Storage Capacity:

Maximum Real Time Recording:

Time Lapse Recording?

Maximum Time Lapse Recording:

Video Format:

Color Signal:

Ports / Interfaces:

Bits / Pixel:

Hard Drive?

Integral Floppy Drive?

Disk Recording?

Analog Tape?

Digital Tape?

Event / Motion Detection?

Zoom Capability?

Video Searching?

Audio Capability?

Multiplexing Capability?

Data Compression?

Operating Temperature:

Allow up to: overrange/margin
Use the overrange/margin to restrict your search to items whose full-scale range is close to your requirements.
(Overrange/margin requires both 'From' and 'To' values to work.)

Vibration Rating:

Shock Rating:

Help with Digital Video Recorders specifications:

Monochrome / Color
   Monochrome / Color       
   Your choices are...         
   Monochrome       Monochrome, or grayscale.  Image is presented in black, white, and grayscale. 
   Color       Image is in color.  Range of colors is generated with varying combinations of different discrete colors.  One common technique is sensing the red, green, and blue components (RGB) and combining them to create a wide spectrum of colors. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Performance Specifications
   Number of Video Inputs:       This is the maximum number of input video channels.  Most typically, they would be cameras or other signal sources; inputs may include items like video players, computers, VCRs, etc. 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
   Maximum Image Capture Rate:       Frames that can be captured per unit time, typically frames per second. 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
   Image Storage Capacity:       Capacity of digital video storage on a hard disk or other medium. 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
   Maximum Real Time Recording:         
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
   Time Lapse Recording?       Recorder can be programmed to record frames at specified time intervals; this feature can increase recording time. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Maximum Time Lapse Recording:         
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
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Video Format
   Video Format       
   Your choices are...         
   NTSC       The National Television System Committee 525-line color-television standard used in North America and Japan. Approximately 480 lines hold image information and the remaining lines contain synchronization, time delay, and other encoded information such as closed caption text.  The standard frame rate is 30 frames per second. 
   PAL       Phase Alternate Line, the European 625-line, 25-frame per second color-television standard. A modification of NTSC system used with the CCIR video norm.  The phase of the color carrier is 180° shifted every image line, making the PAL  system not as sensitive to color signal phase distortion. It provides somewhat lower vertical resolution the NTSC system and requires complex processing equipment. 
   SECAM       SEquential Color And Memory, translated from the French SEquential Couleur Aver Memoire.  SECAM is a composite color transmission system in which two color difference signals are transmitted on two separate lines. Memory is required to obtain both color difference signals for color decoding. This system is used in France and many East European, African and Asian countries. 
   RS-170       RS-170 is the standard black and white video format used in the United States (525 lines, 30 frames per second).  It was originally defined by the EIA (Electronic Industry Association) standards organization for use in North America, Japan, and a few other parts of the world. The EIA standard defines only the monochrome picture component but is mainly used with NTSC or PAL color encoding standards. 
   RS-330       A standard recommended by EIA for signals generated by closed-circuit TV cameras scanned at 525 lines, 60 frames per second and interlaced 2:1. The standard is similar to RS-170, but H-sync pulses are absent during V-sync. Equalizing pulses are not required and may be added optionally during the V-blanking interval. This standard is also used for color television station electrical signals. 
   CCIR       CCIR (Comité Consultatif International des Radio Communications, or International Radio Consultative Committee) is an international committee that sets and governs video signal standards.  Merged with the ITU and became the ITU-R radio communications division. 
   Other       Any unlisted video format. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Color Signal
   Color Signal       
   Your choices are...         
   RGB       A type of component video output in which red, green, and blue image components are transmitted as separate signals over three separate wires, allowing for full bandwidth for each component.  Different synchronization methods are available for RGB. 
   Y PbPr       Component video format in which three signals Y, R-Y, and B-Y, are transmitted via separate cables.  
   Y/C (S-Video)       S-Video or Y/C output contains two separate signals, luminance (Y) and color (C) transmitted on two separate cables.  The C color component is modulated on the same 3.58 MHz subcarrier as it would be for NTSC output, but the bandwidth is not limited as it must be for Composite Output. 
   Composite       Composite output format contains the red, green and blue components of the color (C) encoded or compressed, then superimposed on the luminance (Y) on a single signal.  The RGB signals are decoded and reconstructed for image display, but the bandwidth limiting of the signal compression limits the subsequent color faithfulness. 
   Other       Any unlisted color output format. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Ports / Interfaces
   Ports / Interfaces       
   Your choices are...         
   RS232       Interface between data terminal equipment and data communications equipment employing serial binary data interchange. 
   RS422       RS422 is a balanced serial interface for the transmission of digital data. It was designed for greater distances and higher Baud rates than RS232. 
   RS485       RS485 is a balanced serial interface for the transmission of digital data. The advantage of a balanced signal is the greater immunity to noise. The difference between RS422 and RS485 is that RS485 can be transformed into a multi-point application. 
   Parallel Interface       A channel capable of transferring more than one bit simultaneously, such as PC printer or Centronics® port. 
   Ethernet       A local-area network (LAN) protocol developed by Xerox Corporation in cooperation with DEC and Intel in 1976. Ethernet uses a bus or star topology and supports data transfer rates of 10 Mbps. The Ethernet specification served as the basis for the IEEE 802.3 standard, which specifies the physical and lower software layers. Ethernet uses the CSMA/CD access method to handle simultaneous demands. It is one of the most widely implemented LAN standards. 
   Modem       Modulator-demodulator. A modem is a device or program that enables a computer to transmit data over telephone lines. Computer information is stored digitally, whereas information transmitted over telephone lines is transmitted in the form of analog waves. A modem converts between these two forms. 
   SCSI       SCSI (Small Computer System Interface) is a parallel interface standard used by Apple Macintosh computers, PCs, and many UNIX systems for attaching peripheral devices to computers. 
   Fibre Channel       Fibre Channel technology uses optical fibers to connect computers and peripheral devices that require high band width. It functions via a serial data transfer architecture that is compatible with SCSI. The most prominent Fibre Channel standard is Arbitrated Loop (FC-AL) which can support full-duplex data transfer rates of 100MBps. 
   TTL       Transistor-transistor logic, a common type of digital circuit in which the output is derived from two transistors. More commonly, however, TTL is used to designate any type of digital input or device. 
   USB       Universal Serial Bus. The standard serial bus for low-to-medium speed peripheral device connections to Personal Computers, including keyboards, mice, modems, printers, joysticks, audio functions, monitor controls, etc. 
   Other       Unlisted, specialized, or proprietary configuration. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Bits / Pixel
   Bits / Pixel       
   Your choices are...         
   8 bits       8-bit numbers represent 512 signal levels. 
   10 bits       10-bit numbers represent 1024 signal levels. 
   12 bits       12-bit numbers represent 2048 signal levels. 
   14 bits       14-bit numbers represent 4096 signal levels. 
   16 bits       16-bit numbers represent 8092 signal levels. 
   Other       Any unlisted resolution. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Recording Media & Drives
   Hard Drive?       Integral hard disk for digital recording. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Integral Floppy Drive?       Recorder contain drive for removable disk such as a 3½" diskette. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Disk Recording?       Recording capability onto a video disk, CD, etc. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Analog Tape?       Traditional recording tape such as VHS. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Digital Tape?       DAT or other digital tape. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
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Features
   Event / Motion Detection?       Recording mode can be triggered by a captured event, predetermined light level variation, or other user-specified conditions.  May also include visual or audible alarm signals. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Zoom Capability?       Recorded image can be zoomed in on, panned, or otherwise manipulated. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Video Searching?       Digital data can be searched for user-supplied image criteria. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Audio Capability?       Can record audio input as well as video. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Multiplexing Capability?       Multiplexing enables simultaneous recording and playback of multiple video signals. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Data Compression?       Compression algorithms store video data in a compressed format to allow for more captured images. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
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Environment
   Operating Temperature:       Full required range of ambient operating temperature. 
   Search Logic:      User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria.
   Vibration Rating:       This is the full required operating range related to vibration. 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
   Shock Rating:       This is the full required operating range related to shock. 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
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