RDL AV INTERFACES - RACK-UP Series

Compatible with RDL Format-A twisted-pair products, these models are RDL Format-A receivers that interface with a DANTE-enabled network. The Format-A RJ45 input has three audio channels which are converted to Dante networked digital audio channels. A fourth, balanced or unbalanced, line-level, auxiliary input is also converted to DANTE. They are offered with or without a POE (power over Ethernet) facility.

RU-FN, RU-FNP Format-A to 4x Dante channels

RU-FN is an RDL Format-A receiver that connects to a Dante-enabled network. It converts the three Format-A audio pairs to Dante networked digital audio channels. Each network channel corresponds to Pair A, B or C of the Format-A input. The unit converts a fourth input, balanced or unbalanced line-level AUX, to Dante. One front-panel green signal LED corresponds to each of the three Format-A input channels. Received audio level is indicated on the variable-intensity LED indicator, facilitating setup when a networked computer is not connected at the module’s location. A Dual-LED VU meter facilitates adjustment of the front-panel AUX input gain control. The AUX input supports the complete range of normal unbalanced and balanced line-level sources. The Format-A input jack provides up to 200mA of power to connected Format-A senders. Multiple senders may be daisy chained from the Format-A input jack. It is powered via PoE or from the optional PS-24AX 24V DC power supply.

Also available as RU-FNP, which has the same functionality as RU-FND, however it can be powered by POE or optional PS-24AX power supply.

Digital audio protocol: Dante. Transmission rate: 100Mbps. Supported sample rates: 44.1/48kHz. Supported bit depth: 24bits. Audio operating level: -18dBFS = +4dBu. Frequency response: 20Hz to 20kHz. Power requirements: 24Vdc at 100mA. Dimensions (WxHxD): 145.8 x 41.7 x 162.6mm. Weight: 601g

These RDL Format-A 'sender/distributors' provide an interface between a DANTE audio network and RDL Format-A twisted-pair products. Three of the DANTE audio channels to are converted to RDL Format-A outputs. A fourth DANTE channel is converted to a balanced, line-level, auxiliary output. They are offered with or without a POE (power over Ethernet) facility.

RU-NFD, RU-NFDP 4x Dante channels to Format-A

RU-NFD is an RDL Format-A sender/distributor that connects to a Dante-enabled network. It converts three Dante audio channels to RDL Format-A. Each network channel corresponds to Pair A, B or C of the Format-A outputs. The unit converts a fourth Dante audio channel to a balanced line-level AUX output. A single front-panel green signal LED corresponds to each of the four Dante input channels. Received audio level is indicated on the variable-intensity LED indicator, facilitating setup when a networked computer is not connected at the module’s location.

The Format-A output is distributed to three separate rear-panel RJ45 jacks. Each Format-A output jack provides up to 200mA of power to connected Format-A receivers. Multiple receivers may be daisy chained from one output jack, or may be connected by home run to each of the three outputs. Higher current Format-A receivers, such as RDL D-PSP1A powered Decora-style speakers, are to be individually connected to a separate output jack. RU-NFD output jacks support the entire range of Format-A receivers, making each output pair available for end-user connection on various wall plates, or feeding other equipment using rack-mounted, shelf-mounted or utility Format-A receivers.

Also available as RU-NFDP, which has the same functionality as RU-NFD, however it can be powered by POE or optional PS-24AX power supply.

Digital audio protocol: Dante. Transmission rate: 100Mbps. Supported sample rates: 44.1/48kHz. Supported bit depth: 24bits. Audio operating level: -18dBFS = +4dBu. Output level: +4dBu, nominal. Output impedance: 150ohms, balanced; 75ohms, unbalanced. Frequency response: 20Hz to 20kHz. Power requirements: 24Vdc at 120mA. Dimensions (WxHxD): 145.8 x 41.7 x 162.6mm. Weight: 610g

These modules are Dante/AES67 audio network interface products compatible with microphones and line-level audio equipment inputs and outputs. These modules are designed to be mounted in equipment racks, closets, conference tables and on shelves or backboards in commercial/industrial installations.

RU-RN40 4x Mic/Line to Dante network

RU-RN40 has four analogue mic/line inputs and four Dante/AES67 network audio channel outputs. Each output stage is driven by an incorporated mixer fed from all four RU-RN40 inputs. Independent control of all mixer levels plus multiple DSP filters with adjustable parameters make the RU-RN40 more versatile than a basic format converter. Each DSP filter may be set to None (audio pass-through), High-Pass, Low-Pass, Shelf High/Low or Notch Boost/Cut. Multiple filters may be set to the same function to obtain higher order filtering. The factory default settings provide high-quality conversion from four analogue line-level, dynamic or condenser microphone sources to four Dante/AES67 network audio channels. RU-RN40 provides a 3-pin XLR or a detachable terminal block for connection to each analogue input. Normal operating line level is +4dBu balanced for -18dBFS. The balanced terminal blocks may be wired unbalanced. It is powered via PoE or from the optional PS-24AX 24V DC power supply.

Digital audio protocol: Dante or AES67. Transmission rate: 100Mbps. Supported sample rates: 44.1/48/88.2/96kHz. Supported bit depth: 24bits. Audio operating level: -18dBFS = +4dBu. Reference level: 0dBFS = +22dBu. Input gain: 0dB to 60dB, 3/3dB steps, software adjustable. Input level: +22dBu, maximum. Frequency response: 20Hz to 20kHz. Power requirements: PoE Class 0, or 24Vdc at 260mA (6.2W). Dimensions (WxHxD): 145.8 x 41.7 x 162.6mm. Weight: 820g

These modules interface standard line-level audio signals with a DANTE audio network, providing 'flexibility, economy and simplicity' to DANTE networked audio systems. Built in RDL's 'Rack-Up' packaging, they will mount directly to surfaces or using a range of mounting options. They are offered with or without a POE (power over Ethernet) facility.

RU-NL2, RU-NL2P Dante to 2x Line-level outputs

RU-NL2 is a converter that provides professional line-level outputs from two Dante network audio channels. Each output provides +4dBu balanced for a network digital audio level of -18dBFS. The output directly interfaces with other professional and commercial equipment without the need for additional gain. Crosstalk is below the noise floor between all outputs across the entire audio spectrum. The noise floor is better than 80dB below operating level with greater than 18dB of headroom. One front-panel green signal LED corresponds to each of the Dante input channels. Received audio level is indicated on the variable-intensity LED indicator, facilitating setup when a networked computer is not connected at the module’s location. The interface is powered from an optional PS-24AX 24V DC power supply.

Also available as RU-NL2P, which has the same functionality as RU-NL2, however it can be powered by POE or optional PS-24AX power supply.

Digital audio protocol: Dante. Transmission rate: 100Mbps. Supported sample rates: 44.1/48kHz. Supported bit depth: 24bits. Audio operating level: -18dBFS = +4dBu. Input level (4dBu): -16dBu to +12dBu, +22dBu, maximum. Input impedance: Greater than 20kohms. Output level: +4dBu, nominal. Output impedance: 150ohms, balanced; 75ohms, unbalanced. Frequency response: 20Hz to 20kHz. Power requirements: 24Vdc at 120mA. Dimensions (WxHxD): 145.8 x 41.7 x 162.6mm. Weight: 640g

RU-NL4, RU-NL4P Dante to 4x Line-level outputs

RU-NL4 has the same functionality as RU-NL2, however it provides four output channels.

Also available as RU-NL4P, which has the same functionality as RU-NL4, however it can be powered by POE or optional PS-24AX power supply.

RU-RN04 Dante network to 4x Mic/Line

RU-RN04 has four Dante/AES67 network digital audio channel inputs and four analogue mic/line outputs. Each output stage is driven by an incorporated mixer fed from all four RU-RN04 inputs. Independent control of all mixer levels plus multiple DSP filters with adjustable parameters make the RU-RN04 more versatile than a basic format converter. Each DSP filter may be set to None (audio pass-through), High-Pass, Low-Pass, Shelf High/Low or Notch Boost/Cut. Multiple filters may be set to the same function to obtain higher order filtering. The factory default settings provide high-quality converters that feed professional line-level outputs from four Dante/AES67 network received audio channels. RU-RN04 provides a 3-pin XLR or a detachable terminal block for connection to each analogue output. Normal operating line level is +4dBu balanced for -18dBFS. The balanced terminal blocks may be wired unbalanced. Powered via PoE or the optional PS-24AX power supply.

Digital audio protocol: Dante or AES67. Transmission rate: 100Mbps. Supported sample rates: 44.1/48/88.2/96kHz. Supported bit depth: 24bits. Audio operating level: -18dBFS = +4dBu. Reference level: 0dBFS = +22dBu. Nominal output level: +4dBu, line, balanced; -46dBu, mic, balanced. Maximum output level: +22dBu, line, balanced; =28dBu, mic, balanced. Output attenuators: 0 to -63dB and OFF, 1dB steps, software controlled. Frequency response: 20Hz to 20kHz. Power requirements: PoE Class 0, or 24Vdc at 180mA (4.3W). Dimensions (WxHxD): 145.8 x 41.7 x 162.6mm. Weight: 810g

Compatible with RDL Format-A twisted-pair products, these models are both RDL Format-A receivers and RDL Format-A senders that interface with a DANTE-enabled network. A Format-A RJ45 input has three audio channels which are converted to Dante networked digital audio channels. A fourth, balanced or unbalanced, line-level, auxiliary input is also converted to Dante. Three of the DANTE audio channels are converted to RDL Format-A outputs. A fourth DANTE channel is converted to a balanced, line-level, auxiliary output. They are offered with or without a POE (power over Ethernet) facility.

The Radio Design Labs Format-A system uses standard IT, networking cables to send receive and distribute audio signals. As a result, systems may be installed in existing buildings using the existing 'flood' wiring, thus avoiding the cost, damage and consequent making good of installing fresh cable. For further information, see RDL FORMAT-A SYSTEM

RU-BNF, RU-BNFP Format-A/Dante

RU-BNF is an RDL Format-A sender/receiver that connects to a Dante-enabled network, providing all the features of an RDL RU-FN Format-A to Network Interface and an RU-NFD Network to Format-A Interface/Distributor. The network interface converts three Dante audio channels to RDL Format-A. Each network channel corresponds to Pair A, B or C of the Format-A outputs. The unit converts a fourth Dante audio channel to a balanced line-level AUX output. One front-panel green signal LED corresponds to each of the four Dante input channels. Received audio level is indicated on the variable-intensity LED indicator, facilitating setup when a networked computer is not connected at the module’s location.

The Format-A output is distributed to three separate rear-panel RJ45 jacks. Each Format-A output jack provides up to 200mA of power to connected Format-A receivers. Multiple receivers may be daisy chained from one output jack, or may be connected by home run to each of the three outputs. Higher current Format-A receivers, such as RDL D-PSP1A powered Decora-style speakers, are to be individually connected to a separate output jack.

RU-BNF output jacks support the entire range of Format-A receivers, making each output pair available for end-user connection on various wall plates, or feeding other equipment using rack-mounted, shelf-mounted or utility Format-A receivers. The wide array of Format-A receivers provide compatibility with commercial audio equipment operating at standard professional levels. The interface is powered from an optional PS-24AX 24V DC power supply.

Also available as RU-BNFP, which has the same functionality as RU-BNF, however it can be powered by POE or optional PS-24AX power supply.

Digital audio protocol: Dante. Transmission rate: 100Mbps. Supported sample rates: 44.1/48kHz. Supported bit depth: 24bits. Audio operating level: -18dBFS = +4dBu. Frequency response: 20Hz to 20kHz. Power requirements: 24Vdc at 150mA. Dimensions (WxHxD): 145.8 x 41.7 x 162.6mm. Weight: 662g

These modules interface standard audio signals with a DANTE audio network, providing 'flexibility, economy and simplicity' to DANTE networked audio systems. Built in RDL's 'Rack-Up' packaging, they will mount directly to surfaces or using a range of mounting options. Each provides either line-level or microphone/line inputs and line outputs from two or four DANTE network audio channels. They are offered with or without a POE (power over Ethernet) facility.

DANTE is a software and hardware solution, offering high-performance audio distribution over standard IP networks, supporting hundreds of simultaneous channels of uncompressed audio with low latency and accurate synchronization. For further information, read DANTE Networking Basics.

RU-LB2, RU-LB2P 2x2 Line/Dante, terminal block

RU-LB2 converts two line-level audio sources to Dante networked digital audio channels. Each input is equipped with a front-panel gain trimmer and associated Dual-LED VU meter to facilitate optimal input gain adjustment. Each input supports the complete range of normal unbalanced -10dBV and balanced +4dBu line-level sources. Input gain adjusted according to the Dual-LED VU meter assures an operating level that preserves full headroom with the lowest noise floor. It is powered from an optional PS-24AX 24V DC power supply.

Also available as RU-LB2P, which has the same functionality as RU-LB2, however it can be powered by POE or optional PS-24AX power supply.

Digital audio protocol: Dante. Transmission rate: 100Mbps. Supported sample rates: 44.1/48kHz. Supported bit depth: 24bits. Audio operating level: -18dBFS = +4dBu. Input level (4dBu): -16dBu to +12dBu, +22dBu, maximum. Input impedance: Greater than 20kohms. Output level: +4dBu, nominal. Output impedance: 150ohms, balanced; 75ohms, unbalanced. Frequency response: 20Hz to 20kHz. Power requirements: 24Vdc at 120mA. Dimensions (WxHxD): 145.8 x 41.7 x 162.6mm. Weight: 640g

RU-LB4, RU-LB4P 4x4 Line/Dante, terminal block

RU-LB4 has the same functionality as RU-LB2, however it provides four input channels and four output channels.

Also available as RU-LB4P, which has the same functionality as RU-LB4, however it can be powered by POE or optional PS-24AX power supply.

RU-MLB2, RU-MLB2P 2x2 Mic/Line/Dante, terminal block

RU-MLB2 converts two Dante audio channels to balanced line level. Each output provides +4dBu balanced for a network digital audio level of -18dBFS. The output directly interfaces with other professional and commercial equipment without the need for additional gain. Crosstalk is below the noise floor between all outputs across the entire audio spectrum. The noise floor is better than 80dB below operating level. A single front-panel positioned, green signal LED corresponds to each of the two Dante input channels. Received audio level is indicated on the variable-intensity LED indicator, facilitating setup when a networked computer is not connected at the module’s location. RU-MLB2 is powered from an optional PS-24AX 24V DC power supply.

Also available as RU-MLB2P, which has the same functionality as RU-LB2, however it can be powered by POE or optional PS-24AX power supply.

Digital audio protocol: Dante. Transmission rate: 100Mbps. Supported sample rates: 44.1/48kHz. Supported bit depth: 24bits. Audio operating level: -18dBFS = +4dBu. Microphone input level: 56dBu, dynamic, -36dBu, maximum; -36dBu, condenser, -19dBu, maximum unclipped, -14dBu, maximum soft clipped. Input impedance: Greater than 1kohm. Line input level: +4dBu, balanced; -10dBV, unbalanced. Input impedance: Greater than 20kohms. Output level: +4dBu, nominal. Output impedance: 150ohms, balanced; 75ohms, unbalanced. Frequency response: 20Hz to 20kHz. Power requirements: 24Vdc at 175mA. Dimensions (WxHxD): 145.8 x 41.7 x 162.6mm. Weight: 687g

RU-MLB4, RU-MLB4P 4x4 Mic/Line/Dante, terminal block

RU-MLB4 has the same functionality as RU-LB2, however it provides four input channels and four output channels.

Also available as RU-MLB4P, which has the same functionality as RU-MLB4, however it can be powered by POE or optional PS-24AX power supply.

RU-RN22 2x2 Mic/Line/Dante

RU-RN22 has two analogue mic/line inputs, two Dante/AES67 network digital audio channel inputs, two Dante/AES67 network audio channel outputs, and two analogue mic/line outputs. Each output stage, local analogue or network digital, is driven by an incorporated mixer fed from all four RU-RN22 inputs. The module also allows independent control of all mixer levels plus multiple DSP filters with adjustable parameters. Each DSP filter may be set to None (audio pass-through), High-Pass, Low-Pass, Shelf High/Low or Notch Boost/Cut. Multiple filters may be set to the same function to obtain higher order filtering. RU-RN22 factory default settings provide high-quality converters that feed professional line-level outputs from two Dante/AES67 network received audio channels. Those settings also convert two analogue line-level, dynamic or condenser microphone sources to Dante/AES67 network audio channels. The interface provides a 3-pin XLR or a detachable terminal block for connection to each analogue input or output. Normal operating line level is +4dBu balanced for -18dBFS. The balanced terminal blocks may be wired unbalanced. RU-RN22 can be powered via PoE or by optional PS-24AX power supply.

Digital audio protocol: Dante or AES67. Transmission rate: 100Mbps. Supported sample rates: 44.1/48/88.2/96kHz. Supported bit depth: 24bits. Audio operating level: -18dBFS = +4dBu. Reference level: 0dBFS = +22dBu. Input level: -56dBu, minimum; +4dBu, maximum, +4dBu/-18dBFS. Input level: +22dBu, maximum. Input impedance: Greater than 1.2kohms. Nominal output level: +4dBu, line, balanced; -46dBu, mic, balanced. Maximum output level: +22dBu, line, balanced; =28dBu, mic, balanced. Output attenuators: 0 to -63dB and OFF, 1dB steps, software controlled. Frequency response: 20Hz to 20kHz. Power requirements: PoE Class 0, or 24Vdc at 180mA (4.3W). Dimensions (WxHxD): 145.8 x 41.7 x 162.6mm. Weight: 820g

RU-RN44 4x4 Mic/Line/Dante, terminal block

RU-RN44 has four analogue mic/line inputs, four Dante/AES67 network digital audio channel inputs, four Dante/AES67 network audio channel outputs and four analog mic/line outputs. Each output stage is driven by an incorporated mixer fed from all eight RU-RN44 inputs. The user has independent control of all mixer levels plus multiple DSP filters with adjustable parameters. Each DSP filter may be set to None (audio pass-through), High-Pass, Low-Pass, Shelf High or Low or Notch Boost/Cut. Multiple filters may be set to the same function to obtain higher order filtering. The interface's factory default settings provide converters that feed professional line-level outputs from four Dante/AES67 network received audio channels. Those settings also convert four analogue line-level, dynamic or condenser microphone sources to Dante/AES67 network audio channels. RU-RN44 provides a detachable terminal block for connection to each analogue input or output. Normal operating line level is +4dBu balanced for -18dBFS. The balanced terminal blocks may be wired unbalanced. RU-RN44 can be powered via PoE or by optional PS-24AX power supply.

Digital audio protocol: Dante or AES67. Transmission rate: 100Mbps. Supported sample rates: 44.1/48/88.2/96kHz. Supported bit depth: 24bits. Audio operating level: -18dBFS = +4dBu. Reference level: 0dBFS = +22dBu. Input level: -56dBu, minimum; +4dBu, maximum, +4dBu/-18dBFS. Input level: +22dBu, maximum. Input impedance: Greater than 1.2kohms. Nominal output level: +4dBu, line, balanced; -46dBu, mic, balanced. Maximum output level: +22dBu, line, balanced; =28dBu, mic, balanced. Output attenuators: 0 to -63dB and OFF, 1dB steps, software controlled. Frequency response: 20Hz to 20kHz. Power requirements: PoE Class 0, or 24Vdc at 180mA (4.3W). Dimensions (WxHxD): 145.8 x 41.7 x 162.6mm. Weight: 820g

RU-BTLA

RU-BTLA is a Bluetooth audio receiver compatible with RDL's Format-A twisted-pair receivers. The interface includes balanced line-level outputs via 3-pin XLR connections, along with unbalanced line-level outputs on RCA (phono). When paired with a compatible Bluetooth-enabled device, the module receives stereo audio from the Bluetooth source. The stereo signal is sent through two Format-A pairs to any RDL Format-A receiver. A stereo/mono switch set by the installer permits summed mono audio to be sent over one switch-selected pair to the Format-A receiver.

In stereo mode, Bluetooth audio is also available via balanced line-level stereo outputs on the rear-panel XLRs or via unbalanced RCA outputs. In mono mode, the summed mono audio is sent to both XLR connections along with both RCA outputs. If set for stereo operation, an additional Format-A source (set to Pair A) may be daisy-chained with the RU-BTLA to a three-pair Format-A receiver. If set for mono operation, up to three RDL D series BT1A modules may be daisy-chained to a single three-pair Format-A receiver. Connections between Format-A modules use standard CATx cable with RJ45 connectors.

RU-BTLA modules require an optional PS-24AS (US) or PS-24AX (UK/EU) power supply. The power pair and all three audio pairs are fed through both rear-panel RJ45 jacks. The installer can customise the module name and programming password via the Bluetooth connection using a smartphone, computer, or tablet terminal program. Dimensions (WxDxH): 145.8 x 100 x 41.7mm.

RU-TPS4A

This active audio sender and distribution module has three balanced or unbalanced line-level inputs on screw terminal connections, along with four outputs on RJ45 connections with Format-A compatibility. Front panel LEDs indicate the levels of each input pair whilst a blue LED to the bottom right of the front panel signifies 24Vdc power. Green LEDs positioned on the rear panel illuminate when the correct output voltage is sensed on the RJ45 connections.

RU-NMP44 4x4 Network Mixing Processor

Designed for adding volume control, mixing, switching and ducking to existing network audio systems within classrooms, meeting rooms, restaurants/bars, fitness gyms and retail stores, RU-NMP44 is a network mixing processor containing six virtual audio mixers controlled by network commands from RDL and other network remote controls. Each mixer operates independently with input signal attenuation from unity to off. The output level from each mixer is independently adjustable from unity to off. Based on the commands sent to the RU-NMP44, each mixer can be used as a mixer, a source selector, a priority paging inserter and/or as a volume control. The outputs from four of the mixers drive corresponding network audio channels whilst the outputs from two of the mixers drive line-level +4dBu audio outputs. RU-NMP44 can be configured using RDL Console or other compatible network control software.

Up to four preset configurations may be stored in the RU-NMP44, with each preset defining any or all mixer level settings. A preset is activated by a network command, an RDL network or wired remote control, a momentary switch closure or a compatible open-collector from other equipment. RU-NMP44 may be configured to power up to a preset, to the last settings used, or with all levels “off”. If ducking is used, one of the four network audio inputs is assigned as the priority input. That input is connected to all six virtual mixers.

An audio detector with installer-defined threshold and recovery delay may be assigned to one, several, or all of the six mixers. For each of those mixers, the priority input is set to a defined level, and the remaining three inputs are each set to attenuate to a fixed level between -10 and -64dB when a message is detected on the priority input. If hum is anticipated from the paging source, one of four high-pass filter may be enabled.

RU-NMP44 may be powered from an optional external 24Vdc power supply, or it has the ability to operate from a PoE enabled network switch.

Digital audio Ethernet protocol: Dante or AES67. Dimensions (WxDxH): 41.7 x 145.8 x 100.6mm.

Four-channel mono audio mixers in the popular RDL modular Rack-Up formats. Different models have four or five channels, microphone/line and line input types are offered. Powering is by external 24V DC supply. Accessories are available for use from AC supplies, and to mount the mixers in a variety of environments.

RU-MX4, RU-MX4T Microphone and Line Mixers

A four-channel mixer with expansion capability. Each channel has XLR and RCA (phono) connectors, for balanced microphone and unbalanced line inputs respectively, 24V phantom power switch, dual-LED level indicator and single rotary fader. A further unbalanced RCA (phono) connection provides a direct input to the mix amplifier for cascading mixers. The mix is displayed on an eight-LED VU meter and a soft-knee compressor may be switched in/out on the rear panel. The main output uses a balanced XLR connector, and an RCA (phono) provides unbalanced output. Both outputs follow a master output level control. The XLR output may be switched between microphone and line level. The RU-MX4T version has an output transformer for isolation.

Microphone inputs: -58 to +20dBu (phantom off) or -41 to +4dBu (phantom on) for +4dBu output, 2kohms, balanced, 80Hz high-pass filter. Line inputs: -25 to +20dBV for +4dBu output, -10dBV nominal, 20kohms, unbalanced. Response: Microphone 80Hz-30kHz +/- 1.5 dB, -10dB at 20Hz (high-pass filter); line 20Hz-30kHz, +/- 0.25dB. Distortion: Better than 0.1% (80Hz to 20kHz), microphone, 0.02% line, THD plus noise. Noise: Better than -82dB for four line sources at unity gain, -64dB for four microphone inputs at 60dB gain, wideband, referred to +4dB output. Outputs: +4dBu, 150ohms, balanced and -10dBV unbalanced. Power source: 24V DC, 150mA, ground-referenced. Dimensions: 150 x 122 x 43 (l x d x h) mm. These modules are Max Rack-Up format, where depth changes depending on function of the module.

Included accessories: Datasheet and power interconnection cable to cascade power to another module.

RU-MX4L, RU-MX4LT Line Mixers

This has four balanced, line-level inputs instead of the four microphone inputs of the RU-MX4. There is no phantom power or compressor, and hence, the associated switches, but is otherwise similar to the RU-MX4.

Specification mostly as RU-MX4. Balanced inputs: -13 to +22dBu for +4dBu output, 20kohms. Distortion: Better than 0.01%, THD plus noise.

Included accessories: Datasheet and power interconnection cable to cascade power to another module.

RU-MX5ML Microphone and Line Mixer

A five channel mixer with detachable barrier block terminals for connection, aimed at permanent installation. Four inputs channels each have microphone and line input terminals, one of which is used at a time. The fifth input is line level only. Microphone inputs are intended for low-impedance balanced types although high-impedance unbalanced types may also be used. Line inputs are balanced, but may be connected unbalanced. Phantom power, 24V DC, may be jumpered to any or all microphones. Each channel has a rotary gain control. There is a separate unbalanced mix input for cascading mixers and similar applications. There are two balanced outputs, one microphone level, one line level. Two peak-reading LED indicators provide output metering.

Microphone inputs (max): -20dBu for +4dBu output, >1.2kohms, balanced. Line inputs: +24dBu for +4dBu output, -10dBV nominal, >10kohms, balanced. Response: Microphone 80Hz-40kHz +/- 1.0 dB; line 10Hz-35kHz, +/- 0.5dB. Distortion: Better than 0.03% (mic), 0.003% (line), THD. Noise: Better than -70dB, all channels active, microphone gain at 50dB, line gain at unity, referred to +4dB output. Outputs: +4dBu, 150ohms, balanced (line), and -45dBu, 150 ohms, balanced (mic). Power source: 24V-33V DC, 65 mA, ground-referenced. Dimensions: 150 x 122 x 43 (l x d x h) mm.

Included accessories: Datasheet.

RU-VA2 Dual Video Attenuator

This passive unit features two separate, passive isolated channels. A single input connector is provided for each attenuator. The output connector is intended to be connected to a 75 ohm terminated load. A front-panel knob is provided to adjust video levels down to the normal 1-volt p-p signal level. A single attenuator is capable of adjusting down the video level to half the incoming signal level. In situations where excessive video levels may cause input overload effects, the RU-VA2 is easily inserted into the circuit and adjusted for proper video levels.

RU-VCA2A Stereo/mono Attenuator

Mono and stereo (RU-VCA2D) digitally controlled amplifier with ramp generator output. When used with RLC1 or RLC2, push button “up” and “down” level control is provided as well as a return to preset function when both buttons are pressed simultaneously.

Technical Specification:

RU-ADA4D Dual Distribution Amplifier

A 2 × 4 stereo or 1 × 8 mono audio distribution amplifier offering independent level adjustments for each of the balanced outputs, audio present and peak led indicators, and multiple isolated audio feeds. The inputs and outputs are connected on rear-panel detachable phoenix-style terminal blocks.

Technical Specification:

RU-ADA8D Distribution Amplifier

As per RU-ADA4D however capable of 2 x 8 stereo or 1 x 16 mono.

RU-MLD4 Mic/Line DA

For applications where connectorised, 4-channel, balanced mic or line level audio distribution is needed. The input and output connections are provided on the front panel as XLR and the rear panel as full-sized detachable barrier blocks and can wired balanced or unbalanced. The outputs are 150 ohms balanced, designed to drive short or long balanced lines, with each output switchable between mic and line level. Both the front panel input XLR connector and the rear panel input terminals are active at all times and are switchable between mic (high and low gain) and line level. Gain trim is provided on a front panel control, along with dual-LED metering, thus accommodating a wide variety of dynamic or condenser microphones as well as line level setup. 24V phantom power can also be selected for the microphone mode input.

Technical Specification:

RU-MLD4T

As per RU-MLD4 however includes transformer.

RU-UDA4 Unbalanced DA

This unit features two separate, isolated channels. The RU-UDA4 may be used in stereo applications, or as two individual mono distribution amplifiers. The input signals are buffered through output line drivers, providing 4 separate line-level unbalanced outputs for each of the two inputs. The RU-UDA4 performance is tailored around industry standard –10dBV input/output levels.

Technical Specification:

RU-VDA4B Video Distribution Amplifier

RU-VDA4B contains a 4 way distribution amplifier, each output capable of 1V peak to peak video signal into a terminated load. An indicator is provided to show the presence of such a signal. The input is a bridging type, with associated loop through output. Input gain is adjustable by means of a preset front panel control. All video connections are made using front panel BNC jacks, whilst the rear panel has barrier strip terminals for the necessary power input: 24V DC, 60mA nominal, (36V DC max). For suitable power supplies see RDL POWER SUPPLIES. This unit is part of a range of modules, mostly concerned with audio, which may be mounted up to 3 modules wide in a standard 19inch rack. See mounting options, listed within this group.

Input: 1 kohm (to bridge 75 ohm line). Gain: –1dB to +7dB. Load impedance: 75 ohms. Frequency response: 10Hz–10MHz ±0.2dB. Noise: <70dB below 1V p-p. Output isolation: >40dB. Differential gain: 0.1%. Differential phase: 0.1 degree. Video connections: BNC, unbalanced, ground referenced. Dimensions (WxHxD): 150×43×77mm.

RU-PA518 Stereo Power Amplifier

This delivers up to 9W RMS per channel into 4 ohms, or up to 18W RMS bridged mono into 8 ohms (switch selectable, both inputs are mixed together). Rear panel switchable built-in peak limiter, front panel volume controls for both inputs.

Technical Specification:

RU-SH1 Stereo/Mono Headphone Amplifier

This Rack-Up series headphone amplifier has balanced/unbalanced left/right inputs via rear-mounted terminal block, and single 6.3mm jack socket. The amplifier has an output of more than 50mW into either high or low impedance headphones, and can be controlled via a front facing rotary controller. Accepts input signal of -20dBV to +20dBu. The system can be wired in mono by using only the left input channel.

RU-MLA2 Dual Mic/Line Preamp

This unit features two microphone or line level input and output preamplifiers which may be used in stereo applications, or as two individual mono preamplifiers. Inputs and outputs are available as front panel XLR and are also available on the rear panel barrier block. Features include input gain adjustment, mic/line selector switches for input and output, input level LED indicators (dual LEDs), mic input high/low gain selection. The outputs are low impedance balanced, designed to drive short or long balanced lines. Inputs and outputs can be wired balanced or unbalanced. 24V phantom power can also be selected for microphone inputs.

Technical Specification:

RU-MLA2T

As per RU-MLA2 however includes transformer.

RU-EQ3 Audio Tone Controls

Single-channel three-band equalisers. RU-EQ3 has controls for bass and treble along with a mid-control “optimised to voice band adjustment”.

Technical Specification:

RU-SM16A Dual Audio Meter

A 2-channel horizontal LED array offering precision audio metering, precise left/right meter tracking, individual channel calibration controls, selectable peak or average metering for each channel, and peak hold on the upper three LED’s in either mode.

Technical Specification:

* VU characteristic

RU-SM16D

As per RU-SM16A with four inputs and meters for quad-mono or dual stereo metering.

RU-VSX4 4-Input Video Switcher

Switches 4 signals to a single output. BNC connectors for inputs and loop-through for outputs of the source signals, or 75 ohms termination. Output is 75 ohm back-terminated to provide unity gain into a 75 ohm terminated input. Front panel has keyboard switches for source selection with LED tally, if the button for the active source is pressed, the switcher mutes to black. Vertical interval switching. A front panel local/remote toggle switch activates either the front panel buttons or a rear-panel connected remote control. Remote output controls are provided to control other equipment (eg. RU-SX4A Audio Switcher).

Input impedance: 5k ohm bridging 75 ohm line. Gain: Unity (75 ohm terminated input and output). Operating signal level: 0.5 - 1.0V p-p. Crosstalk: <55dB. Off attenuation: >65dB. External control inputs: Closure to ground, 1mA. External control outputs: 4 @ 50mA open collector to ground. Power: 24-33VDC 110mA

RU-VSQ4 4-Input Sequencing Video Switcher

Similar to the RU-SX4, this also features automatic sequence switching. On power-up, the unit sequences at the rate selected on the front panel interval rate control. If the button for an active source is pressed, the sequencing is stopped and that source is selected. If the button for an inactive source is pressed, the output switches direct to that source. Pressing the button a second time resumes the sequencing. Technical details as RU-VSX4.

RU-ASX4D 4-Input Audio Switcher

Similar to the RU-SX4, however the ASX4D switches 4 stereo audio inputs to a single stereo audio output. Each of the balanced inputs and outputs are on detachable terminal blocks positioned on the rear panel. The front panel hosts the four push button switches along with latching power button and LED level indicators.

RU-ASX4DR 4-input Remote Audio Switcher

RU-ASX4DR has the same functionality as RU-ASX4D however it is designed to work remotely and therefore doesn't feature any push buttons on the front panel.

RU-SQ6A Sequencing Controller

A sequential switcher providing control voltages for up to 6 circuits. Each circuit has a 24V DC output for switching mains relays etc. and an SPST dry contact for other control functions. Switch on and off delay is adjustable by front panel control. Controlled by either a front panel push-button or rear panel remote activation contact, the unit will also behave as if a power-up sequence is received on receipt of a supply voltage. It also powers off in sequence if that same supply is lost. LEDs indicate the 6 circuit states, if a power-up request is received, sequence complete status and whether the unit is in manual or remote control modes (switchable on the rear).

Technical Specification:

RU-SC2

A RS-232 to/from RS-422, full duplex converter designed for installations where two RS-232 devices require over long distance. RS-232 connection is via the front facing panel, whilst RS-422 I/O is on the rear facing panel and via barrier clock connections.

Baud rate: <115.2kbps, determined by RS-232 device. Operating temperature: 0-55 degrees Celcius. Power requirement: 24Vdc, 125mA, ground referenced. Weight: 0.25kg