DVRx-16 16°³ÀÇ Composite ÀÔ·ÂÀ» ¹Þ¾Æ 32°³ÀÇ CompositeÀ¸·Î ºÐ¹èÇÏ´Â Àåºñ 40 MHz bandwidth (-3 dB), Gain Á¶Àý °¡´É, EQ Á¶Á¤°¡´É ÀÔ·Â : Composite Ãâ·Â : Composite Àü¿ø : 120 VAC input power, < 300mA DVRx Converting analog composite video to digital video has become commonplace in security, presentation, and broadcast systems. Regardless of the application, an optimized analog video input is essential for efficient and accurate A/D conversion. The DVRx* product line is specifically designed to provide reliable, easy-to-use, and accurate analog video optimization. Quickly set composite video to RS-170A (NTSC) specifications with the DVRx to ensure optimal A/D converter performance. The results can be impressive: Smaller file sizes, less distortion, and improved resolution. Essential for DVR Applications Unlike an video tape recorder, which simply records the incoming signal to tape, a DVR must first convert the analog signal to a digital format. When the analog video doesn¡¯t meet the RS-170A specification – either due to transmission line losses, noise, interference, or DC voltages riding on the signal – the A/D conversion process may generate errors that significantly degrade DVR performance. Problems can include erratic recording, false motion detection, and moderate to sever distortion to the video picture. VAC¡¯s DVRx can optimize the analog signal to significantly reduce and typically eliminate many of the problems that cause poor DVR performance. DVRx Features • Differential (¡°humbucking¡±) 75Ohm input mitigates ground loop interference • Adjustable gain and EQ compensates for cable losses or low signal levels from the video source • AC coupling on the input eliminates DC offsets • DX Restore circuitry provides correct voltage references to ensure outputs meet RS-170A spec • 40 MHz bandwidth is more than sufficient for NTSC quality video Model Signal Configuration Part Number DVRx-8 Eight 1X2 DAs 61-415-508 DVRx-16 Sixteen 1X2 DAs 61-415-516 Each DA has: - Differential 75 Ohm input (BNC) - Two active 75 Ohm outputs (BNC) - Adjustable EQ - DC Restore circuitry eliminates DC offset - DC coupling on outputs - 40 MHz bandwidth (-3 dB) - 0.75X to 1.5X gain control - 0.5-2.0 Vpp input signal range - +/- 8V input offset voltage range - Output current drive > + 20ma Size: DVRx-8: 1U rack package DVRx-16: 2U rack package Power: DVRx-8: 120 VAC input power, < 200mA DVRx-16: 120 VAC input power, < 300mA IEC 320 power connector Temp: 0C to +50C operating temperature range |