Lectrosonics DCR822 Compact Dual Channel Digital Receiver 537.600 - 691.175Mhz
Product code : LEC.DCR822-B1/C1
The Lectrosonics DCR822 digital 2 channel receiver is the true successor to the venerable UCR411a – a dual-channel package in the same size - and represents state-of-the art RF performance with Vector Diversity (an advanced type of True Diversity) and extremely robust front-end architecture, bringing the Highest Level of RF and Audio Performance to Field and Location Production.
The DCR822’s powerful VectorDiversity subsystem constructively combines all the energy available at bothantennas, smoothly and continuously combines RF signals from two receiver frontends per channel, with differing phase angles in order to obtain maximum energyand signal-to-noise.
Traditional “true diversity” or “ratio diversity” methodsuse two complete receivers and blend the audio. This works well for FM andDigital Hybrid systems but falls short of the ideal for today’s all-digitalmodes. The DCR822’s Vector Diversity subsystem deliver clean, artifact-freeperformance in all modes, and actually able to take two signals compromised bymultipath interference and reassemble them into a usable signal.
The DCR822features an all-digital audio path, 24bit/48kHz digital audio, which outputs to(2) analog audio signals or (4) AES3 digital audio signals (when used withstereo modes).
The DCR822 includes AES-256 CTR encryption with 4 types of keypolicies: only Lectrosonics provides such flexible and powerful encryption.
TheDCR822 also has on-board recording, in the industry standard .WAV (BWF) fileformat, allowing recording time of 46 hours with a 32GB microSDHD card.
•Vector Diversity; continuous amplitude and phase matching for unparalleled RFperformance
•(2) RF front ends per audio channel (True Diversity)
•Dual Independent receiver channels
•24bit / 48kHz Digital Audio
•High Third Order Intercept (IP3) Performance of +15dBm (versus typicalperformance of +5 to +8dBm)
• Selectable(2) Analog and (4) AES3 Digital audio outputs on two TA3M connectors
•Powered by (4) AA batteries or external DC
•On-board Recording via microSDHC card in .WAV (BWF) file format
•Compatibility Modes for Digital Transmitters (DHu, DBu, DPr, DCHT, M2T) andDigital Hybrid Wireless? Transmitters (SMWB, SSM, SM, LMb, HMa, LT, WM, HHa,)
•Built-in RF Spectrum Analyzer
•SmartTune for quick auto frequency selection
•SmartNR™ for superior noise reduction with high-noise sources
•Built-in 1kHz audio test tone
•Machined Aluminum Housing with hard-anodized finish
•OLED display provides visibility in all lighting conditions
•AES-256 CTR mode Encryption with 4 different key policies
• Analog and AES3 digitaloutputs, menu selectable
Operating Frequencies (MHz):
Model A1/B1: 470.100 - 614.375
Model B1/C1: 537.600 - 691.175
Frequency Selection Steps: 25 kHz
Frequency Response: 25 Hz to 20 kHz (+0/-3 dB)
Frequency Stability: ±0.001 %
Front end bandwidth: ±5.5 MHz, @ -3 dB
Sensitivity: 20 dB Sinad: 0.9 uV(-108 dBm), A weighted
60 dB Quieting: 1.12 uV (-105 dBm), A weighted
AM rejection: >60 dB, 2 uV to 1 Volt
Modulation acceptance: 85 kHz
Spurious rejection: 85 dB
Third order intercept: +15 dBm
Diversity method: Vector Diversity
Antenna inputs: Dual SMA female jacks; 50 Ohm impedance
Audio output: Rear panel 2 TA3M connectors; can drive 600 Ohm,
adjustable from -50 to +5 dBu in 1 dB steps
(into nominal 10 k bal. load)
Audio Performance (overall system):
THD: 0.2% (typical)
SNR at receiver output (dB):
SmartNR No Limiting w/Limiting
OFF 103.5 108.0
NORMAL 107.0 111.5
FULL 108.5 113.0
Note: The dual envelope “soft” limiter
provides exceptionally good handling
of transients using variable attack and
release time constants. Once activated,
the limiter compresses 30+ dB of transmitter
input range into 4.5 dB of receiver output range,
thus reducing the measured figure for SNR
without limiting by 4.5 dB
Input Dynamic Range: 125 dB (with full Tx limiting)
Overall Latency (time delay): 1.4 ms with digital source, <2.9 ms with Hybrid TX
Audio Test Tone: 1 KHz, -50 to +5 dBu, <1%THD
Front Panel: • LCD display
• Menu/Sel, Pwr/Back, Up/Down Arrow Buttons
• SD Card Reader
• IR Port
Rear Panel: • Analog/AES audio output jack (2)
• External DC input
• Battery compartment
• USB port
External Power: Minumum 9 Volts to maximum 17 VDC
2.5 W; 170 mA at 12 VDC
Battery Life: 6 hrs. continuous, w/ 4 disposable, 1.5VDC AA Lithium
Weight: 408 grams with batteries (14.4 oz.)
Dimensions: 3.23” wide x 1.23” high x 4.75” deep
82.042 wide x 31.242 high x 120.650 deep mm
Storage media: microSDHC memory card
File format: .wav files (BWF)
A/D converter: 24-bit
Sampling rate: 48 kHz
Recording modes/Bit rate: 24 bit - 144 kbytes/s per channel (up to 4)
Frequency response: 25Hz to 20 kHz; +0/-3 dB
Dynamic range: 110 dB (A), before limiting
Distortion: < 0.035%
Operating temperature range:
Celsius: -20 to 50
Fahrenheit: -5 to 122
Specifications subject to change without notice.
Available Recording Time
Using a microSDHC memory card, the approximate
recording times are as follows. The actual time may vary
slightly from the values listed in the tables.
*microSDHC Logo is a trademark of SD-3C, LLC
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