Digital Transmitter

Digital Camera Hop Transmitter, DCHT/E01

 User Guide | Technical Data

For use in film and television production

The DCHT/E01 transmitter is designed for use in film and television production to provide a wireless link from a bag or cart system to cameras and recorders. The transmitter will accept mic or line level analog signals or AES digital signals from a mixer and transmit the signals to the receiver in a pure digital format. The digital architecture is a third generation design with specially

developed, high efficiency digital circuitry for extended operating time on two AA batteries.

The transmitter can tune in coarse or fine steps across the UHF television band from 470.100 to 607.950 MHz, with a selectable output power of 10, 25 or 50 mW. The pure digital architecture enables AES 256-CTR encryption for high level security applications.

Studio quality, stereo audio performance is assured by high quality components in the preamp, wide range input gain adjustment and DSP-controlled limiting. Input connections and settings are included for any lavaliere microphone, dynamic microphones and line level inputs.

Input gain is adjustable over a 51dB range in 1 dB steps to allow an exact match to the input signal level, maximizing the dynamic range and signal to noise ratio.

The top panel contains the antenna jack, two audio input level LEDs (one per audio channel), the programmable function switch and the audio input jack. The red/green LEDs provide audio level indications from -20 dB to the onset of limiting for each channel for accurate input gain adjustment. The programmable switch can be configured as a mute switch, a power on/off switch, or be bypassed.

The 6-pin input jack accepts two mic or line level analog signals or AES digital signals from external sources via a variety of adapter cables. Analog inputs can be linked for the same gain when used with a stereo source, or operate independently with individual settings.

The housing is constructed of solid machined aluminum for lasting ruggedness. The exterior is finished with an ultra hard, dark electroless nickel finish.

Optional Battery Eliminator

The transmitter can be powered by external DC using the optional LTBATELIM power supply adapter. The battery door is replaced by the adapter with a simple procedure.

The adapter provides a locking coaxial connector and a variety of power cords and connectors are available.

 

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

DCHT/E01, Accessories

26895

Wire belt clip

BCSLEBN

Spring-loaded belt clip

LTBATELIM

Replaces the batteries for powering the DCHT from external DC, 5 to 25 volts.

MCTA6AESXLRF

AES3 digital signal from XLR-F output. 18 inch length.

MCTA6PT

General purpose cable with TA6FLX 6-pin female on one end and stripped and tinned wires on the other end with two separate cables. Wired for connection to microphone level signals. 18 inch length.

MCTA6TA3F2

Line level signals from two TA3-M outputs. 18 inch length.

MCTA6TA5M2

Microphone and line level signals from microphones and other devices configured with TA5F connectors for Lectrosonics wireless transmitters. 6 inch length.

MCTA6XLRF2

Line level signals from two XLR-M outputs. 18 inch length.

Technical Details 
Operating Frequencies:470.100 - 614.375 MHz
Frequency Selection Steps:25 kHz
RF Power Output:Selectable; 10, 25 or 50 mW
Frequency Stability:± 0.002%
Spurious Radiation:Compliant ETSI EN 300 422-1 v1.4.2
Digital Modulation:8PSK
Equivalent Input Noise:–128 dBV
Input Level:• 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
Compatibility Modes:• DCH (Digital Camera Hop)
• Duet (IEM)
Frequency Response:20 Hz -14.5 kHz ± 1 dB
Controls:• Top panel toggle switch; programmable as power , mute or none (off) function
• Side 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 Duracell Quantum recommended
Battery Life:5 hours; Duracell Quantum alkaline
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 6.5 ounces (184.272 grams), including two AA batteries and wire belt clip
Overall dimensions:3.45 x 2.44 x .742 in. (88 x 62 x 19 mm)
Emission Designator:200KG1E