Audio Setup; Compat Mode - Lectrosonics DCR822-A1B1 Instruction Manual

Note: In Frequency Diversity mode, both
transmitters must be the same type (usually the
same model). The microphones must also be
placed very close together to minimize comb
filtering.
D i v e r s i t y
F r e q u e n c y
C a l i b r a t e
automatically cancelled on exiting the diversity setup
page. Calibration can be toggled on and off for testing
but will revert to Operate mode on exiting the diversity
setup page.
To prepare for operation in the Frequency Diversity mode,
make the following adjustments:
1. Set up the transmitters according to their instruc-
tions. Verify that both transmitters are set to the
same audio polarity, and set to the same input
gain level. Turn them on to transmit, and verify that
audio and RF signals are present at the receiver.
Place the two microphone elements as closely to-
gether as possible, and place them where there is a
steady source of sound. Pink noise from a loud-
speaker, headphone, or smartphone is ideal. Make
sure it is loud enough to modulate the receiver
audio to the middle of the range on both channels.
2. Connect a headphone amplifier to one of the audio
outputs on the DCR822 (in Frequency Diversity
mode, the resulting blended audio is mirrored on
both outputs). In the photograph, an MTCR is used.
Plug a set of headphones into the amplifier jack to
monitor the blended output.
3. In the "Calibrate" mode, the two receiver channels
are placed out of polarity from each other. While
listening to the blended output, adjust the gain
control on one of the transmitters so that the audio
level drops significantly (nulls) as the two channels
cancel each other. For the best performance in Fre-
quency Diversity mode, adjust the mic gain up and
Rio Rancho, NM
The DCR822 allows null testing
with a special calibration mode
as shown on the display. When
the display shows "calibrate," it
should be possible to achieve a
null. Calibration is automatically
activated on selection of the
Frequency Diversity mode, and
Dual Channel Digital Receiver
down on one transmitter as described, listening for
the deepest null.
4. Once completed, Press the PWR/BACK button to
exit this screen, which will automatically change
from from "Calibrate" to "Operate". While still on
the Diversity selection page, you can select "Cali-
brate" with the MENU/SEL button, then change to
"Operate" by pressing the UP or DOWN buttons.
Pilot Bypass:
Allows the user to bypass the pilot tone on each channel
while in a Hybrid compat mode and defeats the pilot tone
squelch when on (no pilot tone is required). "Off" means
that pilot tone must be present to allow audio output.
This setting is compatibility mode dependent. If this op-
tion is not available for the mode you have chosen, the
screen will show N/A.
WARNING: Without a carrier present (a
transmitter on), the audio will be unsquelched
noise.

Audio Setup

Audio Level:
Allows user to set Audio Output Level per channel and
allows user to enable 1kHz audio tone for level setting.
This setting is Output Type dependent. If AES is chosen,
there are no adjustments available.
Output Type:
Allows user to choose output for each channel, analog or
AES3
Routing:
Allows user to choose where to send RX1 and RX2, to
either audio output channel or both.
Smart NR:
Allows user to enable Smart Noise Reduction on either
receiver channel or both. Settings are: Off, Normal and
Full. The default setting for digital compatibility modes is
"Off." The default setting for hybrid modes is "Normal."
Talkback:
Allows user to enable the Talkback (TB) function on either
receiver channels or both, to determine where the TB
outputs are routed, and to select how the TB signals in-
teract with the normal program audio on those outputs. If
"Off" is selected for a receiver channel, then no Talkback
function will occur on that channel, even if the transmit-
ter's programmable switch is set to "TB" and activated.
"Override" indicates that if a TB command comes from
the transmitter, then the TB audio goes to the specified
receiver output, and the normal audio from that channel
is muted. "Mix" indicates that the TB audio and the stan-
dard audio routed to that receiver output will be mixed
to that output. "TB Only" indicates that the normal audio
routed to that output is muted, and only the TB audio will
be present, and, only when the TB command is activated
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