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EF1210 U
SER
M
ANUAL
34 http://www.aspi.com Copyright © 1999, All Rights Reserved
CODEC signal. No other calibration is necessary for Playback/Record.
The T
O
CODEC signal may be adjusted to match the level required by your
codec (or other remote terminal equipment) input.
4.2. Press the L
EVEL
A
DJUST
D
OWN
button to set the T
O
CODEC level to -10 dBV.
Press the L
EVEL
A
DJUST
U
P
button to set the T
O
CODEC level to 0dBu. More
precise level adjustments can be made with RS-232 commands (See the GAINC
command on page 62 in the Command Set Reference.).
Refer to Figure 14 on page 34.
C
ALIBRATION
S
TEP
5: Z
ONE
/R
EFERENCE
S
ETUP
5.1. Enter Zone/Reference Setup mode by pressing A
UX
I
N
L
EVEL
/S
ETUP
after step-
ping through the normal configuration sequence. For Calibration Step 5, the
S
ETUP
LED will blink five times per period.
If you are only using a single zone, you may omit this step.
During Calibration Step 5, you may set the EF1210 to use different AEC Refer-
ence Inputs for each channel. The reference signal used with channel 1 will be
used as Zone A output, and the reference used with channel 8 will be used as
Zone B output. Microphones on the input channels must be placed in the sound
field of the appropriate Zone output for the EF1210 to operate correctly; other-
wise echoes will not be cancelled. In other words, if for example the microphone
on channel 3 is in the soundfield of the loudspeaker connected to the Zone B out-
Note.
You may skip this step if you are not using playback and record on
the EF1210
Figure 14.
Calibrating for playback and record.
-12 -7 -3 0 3 20 dB -12 -7 -3 0 3 20
AUX IN
LEVEL
REF
SELECT
INPUT
SELECT
SETUP
AEC
A
AEC
B
12345678
INPUTPOWER REMOTE
MUTE
ALL
LEVEL
ADJUST
SETUP
STEP 4.2a:
press to set
CODEC OUT
level to -10
dBV
STEP 4.2b:
press to set
CODEC OUT
level to 0 dBu
LED blinks four
times for record
and playback
calibration
36


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