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Zaxcom RX-4 MRX Module Interface

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The Zaxcom RX-4 can be ordered in one of two configurations:

RX-4H - covering blocks 23 through 26 (598 – 698 MHz)

RX-4L - covering blocks 20 through 23 (512-614 MHz)

The RX-4 is an interface to convert Zaxcom’s MRX214 and MRX414 receiver modules into stand-alone receivers.

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Versatility

The MRX414 broke new ground as the first receiver to receive audio from four separate transmitters. Now with the RX-4, the MRX414 can be used as a standalone portable receiver outside of a host unit, making the combo a great way to get started with the Zaxcom Digital Recording Wireless ecosystem.

The RX-4 is an affordable and invaluable accessory, increasing the versatility of the MRX so it can be used as a stand-alone receiver in addition to its use in a Nova or an RX-12, etc. allowing for your system to expand as your needs grow.

Design

The RX-4’s intelligent design includes two OLED displays to easily visually monitor data from up to 4 separate transmitters. There are four tricolor LEDs to indicate the decode status of each of the 4 receive channels and push buttons for simple navigation of menus.

Connectivity

The audio and power connectors are located directly behind the control panel of RX-4 so cables can be conveniently attached without taking apart the sound bag. The audio output interface is via two TA5 connectors, either digital out via two AES3 connections or balanced line-level analog out. Power is connected via a 4-pin Hirose.

Cable wiring is the same across the entire line of Zaxcom receivers for easy integration.

Channel Count

The RX-4 can receive 4 channels of audio from up to four transmitters when used with an MRX414. It can receive up to 4 channels of audio from two transmitters when used with an MRX214.

RF Performance

The RX-4 has a brand-new dual-track-tuned front-end filter with a 44 MHz tuning window. There’s also an internal passive filter making it impossible to overload the RX-4, this means increased range, no intermodulation, and no interference from walkie-talkies and mobile phones.

RF Scan & Re-freq

The RX-4 can scan the entire frequency range, and re-freq all 4 receivers instantly to avoid localized interference at new locations. Receivers can be used anywhere in the frequency range of the RX-4 but need to be within the 44 MHz window of the tuned front-end filter.

Frequency Range

The RX-4 is available in two frequency ranges:

  • RX-4L – covers Blocks 20 – 23 (512-614 MHz)
  • RX-4H – covers Blocks 23 – 26 (598-698 MHz)

Power

The RX-4 consumes no power, it runs off the module and produces no additional heat. The MRX414 consumes only 350ma when all four channels are active.

Specifications

Output

Analog Audio Output: 4-Channel Balanced 0dB @ -20 dBFS
Digital Audio Output: 2 x AES3 Pairs (32 kHz Sample Rate)
Audio Connectors: 2 x TA5M

Receiver Interface

RF Connectors: 2 x SMA
RF Impedance: 50 ohm
RF Sensitivity: -110 dB
RX Decode Level: 6 dB signal to noise in XR Modulation
RF Filter Band Pass: 44 MHz
RX-4L Tuning Range: 512 - 614 MHz
RX-4H Tuning Range: 598 - 698 MHz

MRX414 Module

Receivers Per Module: 4
Receiver Modulation: Zaxcom Proprietary Digital
MRX414-L Tuning Range: 512 - 614 MHz
MRX414-M Tuning Range: 536 - 652 MHz
MRX414-H Tuning Range: 596 - 698 MHz
Power Consumption: 300 ma @ 12 VDC
Size: 5" x 3" x .8" (L x W x H)
Weight: 7oz

MRX214 Module

Receivers Per Module: 2
Receiver Modulation: Zaxcom Proprietary Digital
MRX214-L Tuning Range: 512 - 614 MHz
MRX214-M Tuning Range: 536 - 652 MHz
MRX214-H Tuning Range: 596 - 698 MHz
Power Consumption: 160 mA @ 13 VDC
Size: 5" x 3" x .8" (L x W x H)
Weight: 7oz

Misc

Power: 8 VDC to 18 VDC (12 VDC nominal @ 30 ma)
Power Connector: Hirose HR10A-7P-4P
Display: 2 x Graphic OLED Display
Size: 1.25" x 5.5" x 1.25" (L x W X H) - (H 5.5" w/MRX414 less pull handle)
Weight: 4 oz