The DVR-451-04A050 from Bosch is a 451 Series DVR, DVD, 4 channel, 500 GB. The Bosch Video Recorder 400 Series is a 4 channel digital recorder that uses the latest H.264 compression technology. With a built-in web server for browser-based video management, the 400 Series is a fully integrated, stand-alone video solution that's ready to go, straight out of the box.
Available in basic and advanced versions, the 400 Series features a highly reliable embedded design that minimizes maintenance and operational costs. The basic version provides one audio input, while the advanced version has four audio inputs and a DVD writer.
The Bosch 400 Series takes advantage of the latest H.264 compression technology that allows for more efficient video compression. This reduces the amount of storage and bandwidth needed while also producing better image quality. The 400 Series records multiple video and audio signals while simultaneously providing live multi-screen viewing and playback. Comprehensive search and playback functions provide quick recall and viewing of recorded video.
Ease of use is key to the 400 Series design. Simply connect the cameras, apply power, and the unit begins recording automatically. All recording takes place in the background with no operator intervention required.
The use of H.264 compression reduces the file size of recordings by as much as 30% compared to standard MPEG-4, without sacrificing image quality. The Bosch Video Recorder 400 Series can record at up to 25 (PAL) / 30 (NTSC) images per second, per channel at CIF resolution. Recording at 2CIF and 4CIF resolution is also possible by reducing the recording image rate settings. The recording rate and quality are individually configurable per channel for maximum flexibility.
The recording archives are split into two partitions. Alarm recordings (input and motion) are stored on one partition, while continuous recordings are stored on a separate one. An overwrite mode can be selected separately for each partition if required.
The 400 Series can control pan/tilt/zoom (PTZ) equipment via RS-232 and RS-485 serial communications. PTZ devices, including the Bosch AutoDome Modular and AutoDome Easy II, are supported.
All models have extensive alarm handling functions and telemetry control. Alarm functions include motion detection in user-definable areas of the image on any camera input.
Local control and operation:
The unit can be easily operated and programmed via the onscreen display menu system using either the front panel control keys, the mouse, or the remote control. Two monitor outputs provide full-screen, quad (main monitor only), and sequenced viewing.
Looping auto-terminating video inputs and outputs, audio inputs and output, and alarm inputs and outputs are located on the rear panel. The VGA connector provides an output for monitor A (main monitor). A CVBS video output is also provided for monitor B (spot monitor). Monitor A displays live and playback in full-screen or quad digital pictures that can be frozen and zoomed. Monitor B displays live fullscreen pictures.
Remote control and operation:
Use the built-in web application via a network for live viewing, playback, and configuration; there is no need to install any additional software for viewing. Four users can control the Bosch 400 Series simultaneously. The Bosch 400 Series includes an authenticity check for both local and remote playback, ensuring recording integrity. The Bosch 400 Series Archive Player is provided for playback of secure video files.
Rated Voltage and Power:
Power input: 120–230 VAC ±10%; 0.5 A; 50/60 Hz
-PAL / NTSC auto-detect
-SVGA: 800x600, 1024x768 or 1280x1024
-PAL: 720x576, NTSC: 720x484
Digital Zoom: 2 times
AGC: Automatic gain adjustment for each video input
Inputs: Composite video 1 Vpp, 75 ohm, automatic termination
-Monitor A: VGA RGB
-Monitor B: 1 Vpp, 75 ohm, sync. 0.3 V ±10%
Inputs: Mono RCA, 1.0 Vpp
Output: Mono RCA, 1.0 Vpp
Sample rate: 16 kHz per channel
Bit rate: 8-bit
Inputs: 4 Inputs configurable NO/NC, max input voltage 15 VDC
Outputs: 1 or 4 Relay outputs, configurable NO/NC, max. rated 30 VAC, 30 VDC 0.5 A continuous
RS232: Output signals according to EIA/TIA-232-F, max. input voltage ±25 V
RS232 Support: Bosch domes via RS232/Bi-phase converter
RS485: Output signals according to RS485, max. signal voltage -8 to +12 V
RS485 Support: Bosch domes, and Pelco P and D
Video Inputs: 4 Looping BNC, auto termination
Monitor: 1 VGA d-SUB, 1 BNC
Alarm connectors: Screw terminal inputs, cable diameter AWG26-16 (0.13-1.5 mm)
Audio Inputs: 1 or 4 RCA (CINCH)
Audio Output: 1 RCA (CINCH)
Ethernet: RJ45, 10/100 BaseT according to IEEE802.3
RS232: DB9 Male
RS485: Screw terminal output, cable diameter AWG28-16 (0.08-1.5 mm)
-Type A Connector
-USB 1.1 on rear for mouse
-USB 2.0 on front for mouse or USB memory device
Storage: Hard Disk 1 SATA hard drive
Record Rate (IPS):
NTSC: Max. 30 IPS per channel, configurable: 30, 15, 7.5, 5, 3, 1
PAL: Max. 25 IPS per channel, configurable: 25, 12.5, 6.25, 5, 2.5, 1
Recording Quality: Best, High, Normal, Low, Lowest
Average Recording Capacity
CIF, Normal, 25/30 IPS:
-PAL: 550 Hours, NTSC: 685 Hours
-CIF, Normal, 6.25/7.5 IPS
-PAL: 1400 Hours,
-NTSC: 1700 Hours
2CIF, Normal, 12.5/15 IPS
-PAL: 460 Hours,
-NTSC: 575 Hours
4CIF, Normal, 6.25/7.5 IPS
-PAL: 370 Hours,
-NTSC: 460 Hours
Dimensions (WxDxH): 357 x 362 x 78 mm (14.1 x 14.2 x 3.1 in) excluding cabling
Weight: 4.7 kg (10.34 lb) approx.
- Operating +0°C to +40°C (+32°F to +104°F)
- Storage -40°C to +70°C (-40°F to +158°F)
- Operating <93% non-condensing
- Storage <95% non-condensing
- 4-Channel real-time H.264 recording
- 4-Channel Audio
- View and record video in CIF, 2CIF, or 4CIF resolution
- Built-in web viewer for remote viewing, playback, control, and configuration
- Supports VGA and analog monitor output (up to 1280x1024)
- Dual streaming for local recording and remote viewing
- Smart Search
- Bosch and third-party Pan/Tilt/Zoom camera control