The Zaxcom Camera Link, TRX900CL, is total sound bag solution for the transmission of audio and timecode to both camera and ERX series monitor receivers.


Zaxcom TRX900CL Camera Link


The Zaxcom Camera Link, TRX900CL, is total sound bag solution for the transmission of audio and timecode to both camera and ERX series monitor receivers.

For purchasing information

The new TRX900CL is a dedicated stereo camera link transmitter for sending two channels of audio and timecode from sound bag to camera. Like all wireless in the Zaxcom TRX series the Camera Link has built-in backup recording with timecode and the ability to send and receive timecode, IFB audio and remote control commands via ZaxNet or a dedicated Zaxcom IFB transmitter.

Like all technologies in Zaxcom’s popular TRX product line, the Camera Link features 100-percent digital transmission for audio quality that rivals a hard-wired system. All audio transmissions from the Camera Link are compander free and are fully encrypted to eliminate the possibility of production audio interception and theft. With an internal timecode-referenced audio recorder that backs up all wireless transmissions on a removable microSD card, the Camera Link eliminates the possibility of audio loss due to interference or signal dropout. The Camera Link is powered externally and consumes an ultra low 2.16 watts.

The Camera Link is compatible with all Zaxcom wireless receivers, IFB receivers and IFB / ZaxNet transmitters.

Camera Link Features:

  • All in one solution – Stereo Transmitter / ZaxNet Transmitter & Receiver / 2-channel Backup Recorder
  • Small size & weight
  • Ultra-low 2.13 Watt power consumption – keeps your bag powered longer from a battery source
  • Two switched band pass filters with a wide 40 MHz wide frequency band (covers 2 typical blocks)
  • Single RF transmission of two audio channels and timecode ensuring no intermodulation or receiver interference
  • 100% digital compander free transmission

Extra detail was considered in the Camera Links design to optimize it for use in a sound bag. Screws are present on every inch of the case to eliminate spurious radiation that can affect adjacent receivers in an audio bag.

The unit has both stereo line level balanced inputs as well as sample rate converting AES inputs. Separate UHF and 2.4GHz SMA antenna connectors are provided for optimum flexibility.

The Camera Link is compatible with all Zaxcom receivers, but works optimally with the QRX100 outfitted with QIFB option and the ERXTCD receivers because of their ability to receive both audio and timecode.



TRX900CL Power Output 10 / 50 / 100 mW – Software Selectable*
RF Modulation Proprietary Digital Method
RF Frequency Range 518.0 to 850.0 MHz (Typical Blocks are 40 MHz wide)
RF Frequency Step 100 KHz
RF Bandwidth 200 KHz
Channel Separation 500 KHz (700 KHz recommended)
Antenna Connector 50 Ω SMA Female
Emission Designator 180 KV2E
FCC Part 75.861
Transmitter Audio  
Dynamic Range 114 dB
Distortion 0.002%
Frequency Response Mode 0: 20 Hz to 16 kHz / T & M Mode 0.2 Hz to 16 kHz
System Group Delay 3.5 ms
Audio input connector TA5 male
Analog Input Range -10 to +4 dBu
Analog input type balanced line level
Audio input Impedance 4.7 k Ω
ADC Bit-Depth 24 Bits
ADC Sampling-Rate 48 kHz
AES input Balanced with sample rate conversion
Sample rate range 32 Khz to 96 Khz
Timecode Reader / Generator  
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
Internal Recording  
Media MicroSD Card (Flash Memory)
File Format .ZAX
Recording Time 96 Hours (16 GB Card)
2.4 GHz ZaxNet Transceiver  
RF Frequency Range 2.403 to 2.475 GHz
RF Modulation Digital Spread Spectrum
RF Frequency Step 0.001 GHz (1 MHz)
RF Bandwidth 1 MHz
Channel Separation 2 MHz
Sensitivity -96 dBm
RF power output TBD
Physical / Power  
Weight 7.3 oz
Dimensions (H x W x D) 1”x 3.55” x 3.23”
Display Graphic LCD
Power consumption 2.13 watts

*Power measured pre-output band pass filter
All Specifications are subject to change without notice. Zaxcom Digital Wireless is protected under patent #’s: 7,711,443 & 7,929,902