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VCA6800+S/D

1x4 or 1x8, Analog Video, Clamping and Equalizing

The VCA6800+ is an analog video clamping and equalizing distribution amplifier (DA) built for use with the 6800+™ modular core processing platform. This DA provides a jumper-selectable input-coupling mode (DC or AC coupling) and is capable of hard and soft clamping to the composite NTSC and PAL video signal.

Features

  • One differential input
  • Eight outputs with double-back module; four outputs with single-back module
  • AC and DC input coupling selectable
  • Looping and internal terminating selectable with dual-slot back module; internal terminating with single-slot back module
  • ±3 dB gain adjustable range
  • >50 MHz bandwidth
  • Continuous cable equalizing up to 984 ft (300 m) Belden 8281 cable or equivalent
  • Back porch clamp with selectable soft, hard and non-clamp modes
  • Hot-swappable
  • Optional removable gain/EQ control
  • Module presence reporting via Harris® CCS Navigator™ control system

Images/Diagrams

Block Diagram

VCA6800+BD.jpg

Back Modules

VCA6800+SVCA6800+D
VCA6800+S-BM.jpgVCA6800+D-BM.jpg

Specifications

Specifications and designs are subject to change without notice.

Inputs
Input Level1 V pk-pk nominal
Maximum Input Level2.5 V pk-pk centered @ 0 V
Input Impedance75 ohms, looping or internal terminating selectable
Input CouplingDC-, AC-selectable
Input Return Loss>45 dB to 5 MHz, >40 dB to 10 MHz
CMRR>65 @ 10 kHz
CM Input Range>28 V pk-pk

Outputs
Number of Outputs8 (D back module), 4 (S back module)
Output Impedance75 ohms
Output Return Loss>45 dB to 5 MHz, >40 dB to 10 MHz
Output Isolation>40 dB @ 10 MHz
Response Variation<0.1 dB @ 10 MHz
Phase Match<±0.2°

Performance
Gain-3 to 3 dB
Frequency Response±0.05 dB DC-10 MHz, ±0.2 dB to 20 MHz, -3 dB >50 MHz
Line Tilt<0.20% DC coupling
Field Tilt<0.20% DC coupling
Differential Gain<0.15%
Differential Phase<0.15°
DC Offset<25 mV
EQ Response±0.05 dB to 5 MHz, ±0.15 dB to 10 MHz, 0-300 m Belden 8281
Clamp Level<±25 mV
Clamp APL Effect<±5 mV
Clamp Delay3 lines for hard, 7 lines for soft
S/N>70 dB by VM 700
Propagation Delay15 ±1.0 ns
Performance Temperature41° to 104° F (5° to 40° C)
Operating Temperature32° to 122° F (0° to 50° C)
Power Dissipation<2 W

Ordering Information

VCA6800+S1x4 DA, analog video, clamping and equalizing, 1 slot
VCA6800+D1x8 DA with looping input, analog video, clamping and equalizing, 2 slots
Sales Contacts
  • North America +1 800 231 9673
  • Caribbean and Latin America +1 786 437 1960
  • Europe and Africa +44 118 964 8200
  • Middle East and South Asia  +971 4 433 8250
  • Asia, Pacific Rim +852 2776 0628