February 25, 2020
February 25, 2020
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The full range of 3G, SD and HD standards are supported by the unit allowing PAL and NTSC signals up to 1080p 60Hz to be distributed. Each output is individually buffered providing separately driven outputs for greater reliability. As well as an AC power input, the unit also has a 12V DC input for use, for example, in outside broadcast vehicles.

Both power inputs can be used to give a dual redundant power supply; whichever voltage is higher will be used.

RB-VHDA8 Diagram

RB-VHDA8 Block Diagram.

See larger image >

Technical Specification For RB-VHDA8


Compatible Standards: SMPTE-424M (3G)
DVB-ASI² at 270Mb/s
¹ Other rates will be passed without reclocking.
² Non inverted outputs only.
Impedance: 75Ω terminating
Equalisation: Up to 100m of Belden 1694A at 1.485Gbps
Up to 350m of Belden 1694A at 270 Mbps
Data Rates: Fully supported: 143, 270, 1483.5,1485, 2967 & 2970Mbps
Passed but not reclocked: 177, 360 & 540Mbps
Reclocking & Equalisation: Automatic
Resolution: Automatic
Return Loss: >15dB at 1500MHz
Output Jitter: <0.2UI
Signal Level: 800mV ±10%

Front Panel Indicators

Power LED: Amber indicates power is present, Red indicates detection of valid incoming SDI signal

Rear Panel Connections

HD/SD-SDI Video Input: 1 x BNC (Unbalanced)
HD/SD-SDI Video Outputs: 8 x BNC (Unbalanced)
Power Supply:
Filtered IEC, continuously rated 85-264VAC, 47-63Hz, fused
Fuse Rating: Anti-surge fuse 1A 20 x 5mm
DC: 12V 300mA max, DC supply, 2.5mm socket fused

Equipment Type

RB-VHDA8: 3G/HD/SD-SDI 1 Input, 8 Output Video Distribution Amplifier

Physical Specification

Dimensions (Raw): 48cm (W) x 10.8cm (D) x 4.3cm (H)
19” (W) x 4.3” (D) x 1.7” (H) (1U)
Dimensions (Boxed): 58.5cm (W) x 22.5cm (D) x 7cm (H)
23” (W) x 8.9” (D) x 2.8” (H)
Weight: Nett: 1.3kg  Gross: 1.9kg
Nett: 2.9lbs Gross: 4.2lbs


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