Specifications

Benhur Corporation – Multidyne, International Sales
15
VDA-220
Equalizing, Video, Pulse Distribution Amplifier with Back-porch Clamp
• Over 20 MHz Band-Width for the distribution of video, pulses and subcarrier for NTSC, PAL and SECAM as well as
AES/EBU digital audio.
• High impedance loop-through input and 8 outputs with source terminations of 75 Ohms.
• Equalizer for up to 1500 ft (450 meters) with switch selector for both 8281 and RG-59U type cable.
• Variations for other cable types are available.
• Back-porch clamp with 60 V hum cancellation.
• Video present LED indicator.
• Plugs into the MULTIDYNE VDA-200-2RU, 10 module, 8 output tray with 2 redundant power supplies and the
MULTIDYNE VDA-200-1RU, 4 module, 8 output tray.
• 90-250 VAC Auto-ranging Power Supply and 48 VDC Power Supply available for all trays.
• Fully compatible with the Grass ValleyTM 8500/8800 and the MULTIDYNE UTIL-200 Video DA Trays.
• Exceptionally versatile for NTSC, PAL, SECAM and composite or component television systems.
Bandwidth, 3 dB ................................................................................................................................... 22 MHz
Frequency response
10 Hz to 5 MHz ............................................................................................................................ +/-0.025 dB
5 MHz to 8 MHz ............................................................................................................................. +/0.05 dB
8 MHz to 10 MHz............................................................................................................................. +/-0.2 dB
18 MHz ................................................................................................................................................ -1 dB
Clamp type......................................................................................................... Back-porch, sampling, feedback
Equalization Range 8281 type cable ....................................................................... 0 - 1000 Ft with single control
Equalization Range RG-59U type cable................................................................... 0 - 1000 Ft with single control
Equalization Accuracy
10 Hz to 5 MHz ............................................................................................................................. +/ 0.05 dB
5 MHz to 8 MHz ............................................................................................................................ +/- 0.10 dB
8 MHz to 10 MHz........................................................................................................................... +- 0.20 dB
Differential Gain ..................................................................................................................................... <0.1 %
Differential Phase.................................................................................................................................... <0.1 º
Line or Field Tilt ..................................................................................................................................... <0.5 %
Signal to Noise..................................................................................................................................... > 80 dB
Common Mode Rejection (60 Hz)............................................................................................................. > 66 dB
Return Loss, to 5 MHz ............................................................................................................................ >42 dB
Power consumption, MAX. ...................................................................................................................... 2 Watts
Distribution Amplifiers, Automatic Gain, EQ