Operation Manual

EF1210 U
SER
M
ANUAL
20 http://www.aspi.com Copyright © 1999, All Rights Reserved
Zoning
The EF1210 may be configured to work with a single AEC reference input or with
two distinct AEC reference inputs. If a single reference is used, the two zone outputs
(Zone A and Zone B) will carry the same signal, and either or both of them may be
connected to room audio amplifiers. An example of using a single reference on the
EF1210 is shown in Figure 3 on page 19. If two references are used, two distinct
zone output signals will be generated, one (Zone A) corresponding to Reference A
(AEC A) and the other (Zone B) corresponding to Reference B (AEC B). These may,
for example, feed room audio amplifiers in two acoustically isolated areas or rooms.
Each input channel must be associated with exactly one of the two references. By
default, all channels are associated with AEC A. If two references are used, some
microphone input channels will in the soundfield of Z
ONE
A and must therefore be
associated with Reference A (AEC A), while other microphone input channels will lie
in the soundfield of Z
ONE
B and must therefore be associated with Reference B (AEC
B). See Figure 4 on page 20 for a block diagram of using a single EF1210 with two
references and zones.
Figure 4. Two independent rooms using a single EF1210
EF1210
EF200 (A)
(Optional)
CODEC
(A)
Auto Mixer (B)
Auto Mixer (A)
TO
AEC
FROM
AEC
FROM
REMOTE
TO
REMOTE
EF200 (B)
(Optional)
TO
AEC
FROM
AEC
FROM
REMOTE
TO
REMOTE
CH 1
CH 8
CH 7
CH 6
CH 5
CH 4
CH 3
CH 2
OUT 1
OUT 8
OUT 7
OUT 6
OUT 5
OUT 4
OUT 3
OUT 2
ZONE A AEC A
ZONE B AEC B
Room A
Room B
CODEC
(B)
PSTN
PSTN