The Lectrosonics DCHT portable digital stereo transmitter is designed for use in film and TV production as both a wireless audio link from a bag or cart system to cameras and as a portable IFB transmitter paired with the Duet digital wireless M2R receiver packs. The DCHT accepts two channels of mic or line level analog signals or an AES digital signal from a mixer and transmits to the receiver or receivers in a purely digital format. The digital architecture of the new DCHT is a third-generation design with specially developed, high-efficiency circuitry for extended operating time on two AA batteries.
The DCHT can tune across the available UHF TV band from 470.00 to 607.950 MHz (470-614 MHz for export versions) in 100 kHz or 25 kHz steps, offering more than 6000 frequencies. The RF output can be set to 10, 25 or 50 mW, thus providing flexibility in terms of operating range for the intended application. The digital architecture allows for AES256-CTR encryption for applications where content security is a concern.
Features
- Tunes across entire UHF frequency range
- 256-bit encryption – AES 256-CTR
- Selectable RF power at 10, 25 and 50 mW
- AES and analog mic and line level inputs
- USB port for firmware updates
- Wide range input gain adjustment
- Compatible with Duet M2R receiver
- DSP-controlled input limiter
- Two AA battery power
- Solid machined aluminum housing
- Optional powering from external DC
Included Accessories
- 26895 – Wire Belt Clip
- 40096 – 2x AA Batteries
- AMJ-19 SMA-mount antennas
- AMJ-22 SMA-mount antennas
Specifications
| Specification |
Details |
| Operating temp. range |
- Celsius: -20° - +40°
- Fahrenheit: -5° - +104°
|
| Frequency Selection Steps |
25 kHz |
| RF Power Output |
Selectable; 10, 25, or 50 mW
20mW max for Domestic B1C1
E09 version: 10/25mW 470.100-614.375 |
| Frequency Stability |
± 0.002% |
| Spurious Radiation |
Compliant ETSI EN 300 422-1 v2.1.2 |
| Digital Modulation |
8PSK |
| Encryption |
AES 256-CTR (per FIPS 197 and FIPS 140-2) |
| Equivalent Input Noise |
–128 dBV |
| Input Types |
- Analog; mic and line level
- AES digital
|
| Input Level (analog) |
- Mic: Nominal 2 mV to 300 mV, before limiting
Greater than 1V maximum, with limiting
- Line: +24 dBu before limiting
|
| Input Impedance |
- Mic: 300 or 4.5 k ohm; selectable
- Line: greater than 100 k ohm
|
| Input Limiter |
Dual envelope type; 30 dB range |
| Gain Control Range |
51 dB in 1 dB steps; digital control |
| Modulation Indicators |
- Bicolor LED indicates modulation of -20 and 0 dB referenced to full modulation
- LCD bar graph
|
| Frequency Response |
15 Hz – 11.3 kHz, +0, -3 dB |
| Controls |
- Top panel toggle switch; programmable as power, mute, or none (off) function
- Front panel membrane switches with LCD interface for power on/off and all setup and configuration controls
|
| Audio Input Jack |
Switchcraft 6-pin locking (TA6F) |
| Antenna |
Galvanized steel, flexible wire, SMA connector |
| Battery |
Two AA Lithium recommended |
| Battery Life |
5 hours |
| Weight |
- 5.75 ozs. (163 grams); w/ belt clip and lithium AA batteries
- 6.40 ozs. (181 grams); w/ belt clip and Duracell Quantum AA batteries
|
| Overall dimensions |
3.45 x 2.44 x .742 in. (88 x 62 x 19 mm) |
| Emission Designator |
200KG7E |
