RU-VDA4B

RDL RU-VDA4B - 1×4 Video Distribution Amplifier with Gain Control, RACK-UP Series

The RDL RU-VDA4B is a video distribution amplifier from the RACK-UP series by Radio Design Labs, designed to distribute video signals to multiple receivers in professional AV installations. The device combines advanced electronic circuits, known for RDL products, with user-friendly operation and clear signaling. The signal fed into the BNC socket on the front panel is amplified and split into 4 independent outputs, while an additional loop output (Loop Out) allows the source signal to be passed to another device. The bandwidth of 10Hz–10MHz (±0.2dB), gain adjustment from -1dB to +7dB, and a 1V LED level indicator on a terminated load facilitate quick and precise configuration, even in the field and remote locations. The compact housing, 1/3 rack width, allows for the installation of three RACK-UP modules in a single rack unit, and optional brackets enable mounting the module above, below, or in front of any flat surface.

Functionality

• video signal distribution - 1 input, 4 amplified BNC outputs
• bridging input stage with two sockets - signal input and Loop Out output for the source signal
• 75Ω input termination - terminator included, connects to the Loop Out socket
• gain adjustment via a potentiometer on the front panel - from -1dB to +7dB
• 4 source-terminated outputs - unused outputs do not require termination
• LED indicator "1V VIDEO INTO TERMINATED LOAD" - lights up when reaching a level of 1Vp-p, helpful for setting levels without measurement devices
• labeling field for manual signal identification on each output
• 24V DC power connected to a full-size terminal block on the rear panel
• ability to connect with other RACK-UP modules (e.g., mixing, distribution, or audio signal measurement) in one rack unit using the RU-RA3 adapter

Features

• input impedance: 1kΩ (bridging, 75Ω line)
• gain range: from -1dB to +7dB (adjustable)
• load impedance: 75Ω
• outputs (5): 1 Loop Out output for the input signal, 4 amplified outputs
• output level: 1Vp-p (on 75Ω load)
• bandwidth: 10Hz-10MHz (±0.2dB)
• noise: < -70dB (below 1Vp-p)
• output separation: > 40dB
• differential gain: 0.1%
• differential phase: 0.1° (measured at 10% and 90% APL)
• connector type: BNC
• power supply: 24V DC, 60mA, unbalanced, with a common ground for power and circuit
• mounting: in a rack using RDL mounting accessories or on a flat surface with optional brackets
• height: 4.3cm
• length: 15cm
• depth: 5.1cm (housing only), 6.4cm (with terminal block), 7.7cm (with terminal block and sockets)
• compliance: EN55103-1 E1-E5, EN55103-2 E1-E4

RDL RU-VDA4B is a compact and reliable video distribution amplifier for installers and AV integrators - it is ideal wherever broadband video signal distribution, gain adjustment, high reliability, small dimensions, and great mounting versatility are required.