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Lectrosonics DCR822 - User Manual

Lectrosonics DCR822
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DCR822
Compact Dual Channel Digital Receiver
DCR822-A1B1, DCR822-B1C1, DCR822-941
INSTRUCTION MANUAL
Rio Rancho, NM, USA
www.lectrosonics.com
Fill in for your records:
Serial Number:
Purchase Date:
Quick Start Summary
The following checklist includes the minimum required
settings to start using the receiver.
Connect power to the receiver or install batteries.
Set the COMPAT (compatibility) mode for the trans-
mitters to be used.
Choose clean frequencies for your receiver chan-
nels using SmartTune or RF scan.
Set transmitters on the matching frequencies (see
your transmitter manual) or use IR sync.
Verify transmitters are set to the same compatibility
mode as the receiver (see your transmitter manual).
Adjust transmitter input gain to match voice level
and mic position (see your transmitter manual).
Select audio output type to match camera or mixer
input (analog or AES3 digital).
Adjust receiver output level as needed for the
camera or mixer input level desired.
Turn on transmitter RF signals (see your transmitter
manual).
scan for informational
product video
Question and Answer IconNeed help?

Do you have a question about the Lectrosonics DCR822 and is the answer not in the manual?

Summary

Quick Start Summary

General Technical Description

DCR822 Block Diagram

Illustrates the internal signal flow and component connections of the DCR822 receiver.

Compatibility Modes

Details the different transmitter compatibility modes the DCR822 supports.

Encryption

Explains the AES 256-bit CTR mode encryption and key policies.

Vector Diversity Reception

Describes the advanced true diversity system for minimizing signal dropouts.

RF Frequency Tracking Front-End and Mixer

Explains the receiver's selective front-end for reducing interference.

Smart Noise Reduction (SmartNR)

Discusses the selectable algorithm for reducing audio hiss.

Audio Output Level

Covers adjusting the receiver's audio output level.

Test Tone

Describes the built-in test tone for audio level matching.

Batteries

Information on recommended battery types for the receiver.

Power Supply

Details the receiver's external DC power input and protection.

Front Panel Controls and Functions

MENU;SEL Button

Accesses menus and selects settings.

PWR;BACK Button

Powers the unit on/off and navigates menus.

Up;Down Arrow Buttons

Scrolls through options and inputs values.

IR (infrared) Port

Used for transferring settings between devices.

microSDHC Memory Card Port

Slot for memory cards for firmware and recording.

Antenna Port (2)

Connectors for external antennas.

Rear Panel Features

TA3 Audio Output Jacks

Balanced audio outputs using TA3 connectors.

USB Port

For connecting to Lectrosonics Wireless Designer software.

Battery Compartment

Houses four AA batteries.

Power Input Jack

Accepts external DC power input.

LCD Main Window

Navigating the Menus

How to enter and navigate the receiver's menu system.

Main Window Screens

Explains the information displayed on the receiver's main screen.

Replacing the Batteries

Step-by-step instructions for installing batteries.

DCR822 LCD Menu Map

Menu Item Descriptions

RF Setup

Configure frequency settings, scans, and tuning groups.

Finding Clear Frequencies with Smart Tune

How to use SmartTune to find optimal operating frequencies.

Frequency

Manual selection or group tuning of operating frequencies.

Scanning

Scan for open frequencies and view RF energy representation.

Group Edit

Add or delete frequencies within tuning groups.

Diversity

Using Diversity Modes

Options for Vector or Frequency Diversity reception.

Vector Diversity

How Vector Diversity combines signals for performance.

Frequency Diversity

How Frequency Diversity uses two channels and transmitters.

Pilot Bypass

Bypass pilot tone for diagnostic purposes.

Audio Setup

Audio Level

Adjust audio output level per channel.

Output Type

Select analog or AES3 digital output.

Routing

Direct audio channels to specific outputs.

Smart NR

Enable or disable noise reduction for channels.

Talkback

Configure and route talkback functionality.

Compat Modes

SD Card Settings

Access files, format card, set naming, load/save groups.

Files

Access list of .WAV files saved on the microSD card.

Takes

Lists files in Scenes and Takes format.

Record

Start recording mode and sequence tracks.

Recovering an Interrupted Recording

IR & Keys Menu

Send Frequency

Send operating frequency to transmitter via IR.

Send All

Send frequency, name, and talkback state to transmitter.

Get Frequency

Retrieve frequency from transmitter via IR.

Get All

Retrieve frequency, name, and talkback state.

Group Sync

Send or get frequency groups via IR sync.

Encryption Key Management

Universal

Basic, default encryption key option.

Shared

Key policy for sharing unique keys.

Standard

High security key policy, transferable to transmitters.

Volatile

Most robust key policy, 'one-time use'.

Settings Menu

Lock;Unlock

Lock/unlock front panel controls to prevent changes.

Backlight

Control display backlight timeout interval.

RX Power

Power off receiver channels to save power.

RX Bat Type

Select battery type for the receiver.

Tx Bat Type

Set battery type for each transmitter channel.

Tx Bat Timer

Set transmitter battery timer alerts.

Tx Bat Icon

Choose transmitter battery icon display.

AutoOn

Enable or disable auto power-on.

Edit Names

Edit channel names for easy identification.

Date & Time

Set date and time for metadata.

Locale

Select region for locale-specific operation.

Default

Restore unit to factory settings.

About

Display general information about the DCR822.

Antenna Mounting and Orientation

AMJ Jointed Antenna

SNA600 A Omni Dipole Antenna

Antenna;Block Reference Table

Installation and Operating Instructions

Locking and Unlocking the DCR822 Front Panel Controls

How to lock/unlock controls to prevent accidental changes.

Firmware Update

Diagnostics

Multi-channel System Checkout

Procedure for checking system performance and interference.

Pilot Tone Bypass

Bypass pilot tone for diagnostic purposes.

Supplied Parts and Accessories

Optional Parts and Accessories

Troubleshooting

INITIAL POWER ON

Solutions for display not active or lit.

ANTENNAS AND RF SIGNAL STRENGTH

Issues with weak RF signal or no signal.

AUDIO SIGNAL QUALITY

Problems with poor signal-to-noise ratio or distortion.

Bad frequency response or generally poor audio quality

Troubleshooting bad frequency response or audio quality.

Specifications and Features

Receiver

Detailed specifications for the receiver.

Audio Performance

Specifications related to audio quality and performance.

Available Recording Time

Approximate recording times based on memory card size.

Service and Repair

Returning Units for Repair

Procedures for sending equipment for repair.

LIMITED ONE YEAR WARRANTY

Lectrosonics DCR822 Specifications

General IconGeneral
Tuning Steps25 kHz
Image Rejection> 90 dB
Spurious Rejection> 80 dB
Power Requirements12 - 18 VDC
TypeDigital Hybrid Wireless Receiver
ModulationDigital Hybrid Wireless
Sensitivity-100 dBm
Audio Output Level+18 dBu, maximum
Dynamic Range100 dB
THD< 0.2% (typical)
Signal-to-Noise Ratio> 90 dB
Frequency Response20 Hz - 20 kHz
Operating Temperature-20 to +60 °C
Antenna Inputs2 x BNC

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