The Zaxcom TRX745 is a wide-band plug-on style digital wireless transmitter with interchangeable cones, it’s the only plug-on transmitter that supports all professional microphone varieties – mono analog, stereo analog, AES and AES42 – making it an ideal choice for wireless transmission directly from boom poles or handheld microphones.
Its body is constructed from a combination of high strength nylon polymer and aluminum. It features Zaxcom High Density (ZHD) Modulation.
Encrypted Audio
The TRX745 transmits using 100% digital modulation allowing audio to be fully encrypted. Digital encryption is the only way to keep all audio transmission private. A digital transmission also provides audio quality superior to analog systems.
QC Audio Transmission
The TRX745 also sends a Quality Control audio signal over ZaxNet™, so when micing someone you don’t have to go all the way to the cart to hear how it sounds, you can use an ERX to listen to the mic right on the spot.
Zaxnet™
TRX745 is equipped with ZaxNet™, a long-range remote-control system allowing the user to change the frequency, pre-amp gain, sleep mode, and place the internal recorder in record, playback, and stop modes – all without ever needing to disturb talent. The units can also replay audio via a timecode reference, giving production sound mixers the ability to replay and remix audio, creating a virtual multi-track playback and re-record system.
Specifications
Transmitter
| RF Modulation |
Proprietary Digital Method |
| Frequency Range |
512 – 614 MHz / 596 – 698 MHz
|
| RF Frequency Step |
100 KHz
|
| RF Bandwidth in ZHD Mode |
50 KHz
|
| RF Bandwidth in XR Mode |
200 KHz
|
| Channel Separation in ZHD Mode |
as close as 100 KHz (receiver dependent)
|
| Channel Separation in XR Mode |
400 KHz
|
| Antenna Connector |
50 Ω SMA Female
|
| Emission Designator |
180 KV2E, 100 KV2E, 50 KV2E
|
| FCC Part |
74.861
|
Transmitter Audio
| Dynamic Range |
126 dB (Stereo model 106 dB) |
| Distortion |
0.002% |
| Frequency Response |
Mode 0 |
| High Pass Filter |
Off or 30 to 220 Hz, Steps |
| Mic Connector |
3-Pin or 5-Pin XLR |
| Analog Mic Power |
48 V Phantom (10 mA max) |
| Digital Mic Power |
10 V AES42 compatible (200 mA max) |
| Input Range |
-60 to -30 dBu |
| Mic Impedance |
4.7 k Ω |
| ADC Bit-Depth |
24 Bits |
| Audio Interfaces |
Balanced analog mono, balanced stereo, AES42, AES |
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 |
2.4 GHz ZaxNet Receiver
| 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 |
Power
| Power Output |
25, 50 or 100 mW – Software Selectable |
| Battery Type |
3 AA cells |
| Battery Life |
Battery Type / Mic power requirement dependent |
