Lectrosonics DCHT Portable Dual Channel Digital Transmitter
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Lectrosonics DCHT Portable Dual Channel Digital Transmitter
The 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.
Key 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
Technical Specifications
Operating temp. range
Celsius -20Ā° - 50Ā°; Farenheit -5Ā° - 122Ā°
Frequency Selection Steps
25 kHz
RF Power Output
Selectable; 10, 25 or 50 mW
Frequency Stability
Ā± 0.002%
Spurious Radiation
DCHT Compliant ETSI EN 300 422-1 v1.4.2
DCHT/E01 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
Included Accessories
26895 - Wire Belt Clip
40096 - 2x AA Batteries
AMJ-19 SMA-mount antennas
AMJ-22 SMA-mount antennas
