Lectrosonics DCHT Specifications

DCHT

Digital Camera Hop Transmitter

DCHT, DCHT/E01

The DCHT, 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 fourth 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
(E01 frequency range is 470.100 to 614.375 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 51 dB range in 1 dB steps
to allow an exact match to the input signal level, maxi­mizing the dynamic range and signal to noise ratio.

TECHNICAL DATA

• 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

• 2-way IR (infrared) port for fast setup

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.

Rio Rancho, NM, USA
www.lectrosonics.com

m

The transmitter is supplied with a stainless, spring wire
belt clip that is secure, but easily detached and re-at­tached without tools. A spring-loaded belt clip is available
as an option. The battery door is machined aluminum,
hinged to the housing to prevent it being lost. The battery
door latches securely to prevent being opened inadver­tently, and will not pop open even if the unit is dropped.

Firmware updates are made via the USB port on the
side panel of the housing. The procedure is very simple
using a menu item on the transmitter and a standard
micro USB cable.

USB port

Setup and adjustment is enabled through a backlit LCD,
membrane switches and an intuitive menu structure.
Input gain is adjustable over a wide range in 1 dB steps
to optimize modulation and limiting for maximum signal
to noise ratio and minimum distortion.

470.100

-40

-20

+0

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.

Specifications

Operating Frequencies:
DCHT 470.100 - 607.950 MHz
DCHT/E01 470.100 - 614.375 MHz

NOTE: It’s the user’s responsibility to select the approved
frequencies for the region where the transmitter is
operating

Frequency Selection Steps: 25 kHz or 100 kHz
RF Power Output: Selectable; 10, 25 or 50 mW
Frequency Stability: ± 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

• 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

Overall dimensions: 3.45 x 2.44 x .742 in. (88 x 62 x 19 mm)
Emission Designator: 200KG7E

581 Laser Road NE • Rio Rancho, NM 87124 USA • www.lectrosonics.com
[phone] • [phone] • fax [phone] • [e-mail]

Specifications subject to change without notice

1 July 2019