QRX100 4-Channel Camera RF Audio System

QRX100 with TRX900

QRX100 with TRX900

QRX100 Features:

  • Four channel UHF diversity audio receiver
  • Built-in IFB return channel transmitter / receiver
  • SMPTE timecode reader/generator
  • Four channel side mounted LED meters (patented)

The QRX100 RF, audio and timecode receiver is a quantum leap in wireless transmission both to and from the video camera.  It can receive up to four channels of 100% digital audio from up to two Zaxcom stereo transmitters to take full advantage of the four discreet audio channels available in most of today’s video cameras.  With add-on features to suit your needs and budget, QRX100 provides unprecedented flexibility in a broadcast ENG receiver.

All transmissions are free from intermodulation that limits the amount of channels that can be used together in the same physical location. The QRX100 allows more channels to be used together than any other system. Up to 140 audio channels can fit in a 35Mhz frequency block utilizing Zaxcom stereo modulation and 500Khz transmitter spacing.

The QRX100 outputs audio in both analog and AES digital formats.  Two AES outputs connect directly to most 4 channel broadcast cameras. AES input is typically the only way to utilize the 4-channel capability of many cameras on the market today.

Digital modulation keeps the signal interference-free from noise that would add distortion to an analog ENG system.  It is housed in a lightweight industry standard package providing optimum compatibility and functionality for broadcasters and freelancers alike.

Any combination of Zaxcom TRX series mono or stereo transmitters can be used with the QRX100.  The transmitters features include no inter-modulation, patented built-in backup recording on Flash memory and an internal IFB audio receiver.  Zaxcom’s true digital stereo transmission uses half the bandwidth of traditional analog solutions.

A single QRX100 mounted on the side of the camera is a complete solution for audio transmission to/from the camera, TRX900 bodypack remote control and timecode synchronization.  Significant size, weight and power consumption reductions are to the camera operator’s benefit.  To replicate the capability of one QRX100, up to 4 receivers, a time code generator and an IFB transmitter would need to be mounted on the camera.

The QRX100 offers performance and features superior to one and two-channel slot-in type receivers that are only available for a limited number of broadcast cameras. Slot-in receivers do not have sufficient intermodulation and interference rejection to allow them to be used in difficult RF environments. The QRX100 with its 500KHz minimum frequency spacing, total immunity to RF overload and digital dropout protection  is the best choice for any environment.

The QRX100 quickly attaches to any broadcast camera with an industry standard mounting kit.  The externally mountable design also allows the QRX100 to instantly connect any broadcast camera overcoming the compatibility issues of slot mounted receivers.

A group of 12 multi-colored LEDs are recessed into the side of the QRX100 (Patented).  They are visible with the QRX100 mounted in its Zaxcom camera mount and provide the sound mixer with visual confirmation of audio reception at the camera.  The LEDs are very bright and can be seen from a distance of up to 20 feet away in bright sunlight.

QRX100 in Camera Mount

QRX100 in Camera Mount

QRX100 QIFB Option: Internal 2.4 GHz IFB Audio, Timecode and Remote Control Transmitter / Receiver

The QIFB option board gives the QRX100 the ability to send and receive IFB audio, broadcast timecode for synchronization and/or remote roll, and sends transmitter remote control commands (RF frequency, audio level, etc.). It also adds a mono headphone output jack to the receiver.

As an IFB transmitter, the QIFB option board can send one audio channel with SMPTE timecode reference. The 2.4 GHz IFB transmission is compatible with all Zaxcom IFB receivers and TRX series digital wireless transceivers outfitted with IFB receive functionality. In receive mode, the QIFB option board receives IFB audio and timecode for camera synchronization.

QRX100 also receives remote control commands from a TRX series transmitter over the UHF frequency band for selecting the confidence monitor return source.

A typical setup would have the QRX100 mounted to a camera and either one or two TRX900AA’s with Stereo Adapters in the sound bag. The TRX900AA receives the audio / timecode signal. The monitor audio is your confidence loop and the timecode controls the start/stop of the internal backup recorder built into the transmitter.

Great ways to use this option include:

-Feed a broadcast camera with the QRX100′s timecode output for timecode sync and the IFB return audio output can be used as an intercom for the cameraman.

-On a multi-camera shoot, designate one QRX100 as the timecode “master” and the rest as timecode “slaves”, this allows multiple cameras to remain in timecode sync without the use of additional external devices.

-Use the QIFB option as your timecode reader / generator, timecode can be manually jammed or received remotely. It keeps accurate timecode for up to 24 hours while it’s in power down mode.

QRX100 Specifications:

QRX100

QRX100


Receiver

Single Mode Receiver Type: True diversity single conversion digital demodulator
Dual Mode Receiver Type: Antenna diversity single conversion digital demodulator
RF Modulation:  proprietary digital method
RF Frequency Range:  518.0 to 872.0 MHz (blocks are 20 to 36 MHz wide)
RF Frequency Step:  100 KHz
RF Bandwidth:  200 KHz
Channel Separation:  500 KHz (700 KHz recommended)
Sensitivity:  -110 dBm
Antenna Connector:  50-ohm SMA female

Receiver Audio – Analog Output  (x 4)
Dynamic Range:  114 dB
Distortion:  0.001%
DAC Bit-depth:  24 bits
DAC Rate:  48 kHz
Connector:  TA-5M
Audio Output Level:  Line:  -10 to 0 dBm active balanced

Receiver Audio – Digital Output (x4)
Signal Format: AES Balanced
Audio Output Connector: TA-5M

IFB Transmitter (QIFB Option Only)
RF Power Output: 50 mW
RF Modulation: Digital Spread Spectrum
RF Frequency Range:  2.403 to 2.475 GHz
RF Frequency Step: 0.001 GHz (1 MHz)
RF Bandwidth:  1 MHz
Channel Separation: 2 MHz
Antenna Connector: 50-ohm SMA Female
Emission Designator: 180 KV2E
FCC Part: CFR Title 47, Part 18IFB Audio Transmitter (QIFB Option Only)
Dynamic Range: 103 dB
Distortion: 0.01%
Frequency Response: 20 Hz to 12 kHz
System Group Delay: 10 ms 

IFB Audio Input (QIFB Option Only)
Connector: Stereo 1/8″ (3.5 mm)
Type:  Balanced / Unbalanced
Level: -10 dBu
Impedance: 10 k Ω
ADC Bit-depth:  24 bits
ADC Sampling Rate: 48 kHz

 

Timecode Input (QIFB Option Only)
Connector: Stereo 1/8″ (3.5 mm)
Level Range:  1 to 5V, P-P
Impedance:  10 k Ω

 

Timecode Output (QIFB Option Only)
Connector: Stereo 1/8″ (3.5 mm)
Level Range:  .2 to 5V, P-P
Impedance: 8 Ω

 

Timecode Reader / Generator (QIFB Option Only)
Clock Accuracy: 1.54 PPM (1 frame out in 6 hours)
Timecode Type: SMPTE
Timecode Frame Rates: 23.98, 24, 25, 29.97NDF, 29.97DF, 30NDF, 30DF

 

Misc.
Weight:   6.0 oz (170 grams)
Dimensions:  1.25″ x 3.25″ x 5.25″ (32mm x 83mm x 133mm)
External Power:   9 to 18 VDC (250mA @ 12VDC)
Internal Power: N/A
Display: Graphic LCD Panel

All specifications subject to change without notice.

Zaxcom Digital Wireless is protected under patent #’s: 7,711,443, 7,929,902 & D608,339