User's Manual

Digital Transmitter
Rio Rancho, NM
15
Firmware Update
Instructions
Firmware updates are made with a file downloaded
from the web site and the DCHT, DCHT/E01 connected
via USB.
The USB port on the transmitter requires a micro-B
male plug on the connecting cable. The other end of the
cable would normally be a USB A-Type male connec-
tor to fit the most common type of USB jack used on
computers.
UPDAT E
Put the transmitter in UPDATE mode
by simultaneously holding down
the UP and DOWN arrow buttons
on the transmitter control panel
while powering it up.
Refer to Help in Wireless Designer
software for instructions.
DCHT
V1.10
/1.10
Once the Update has completed,
turn off the transmitter, then turn it
back on to verify that the firmware
version on the transmitter LCD
matches the firmware version
shown on the web site. The firm-
ware is the second LCD display
during boot up sequence.
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
Specifications subject to change without notice