Operation Manual

A
DVANCED
I
NSTALLATION
ASPI Digital - The Sound of DSP Technical Support: 404.892.3200 13
14. ASPI B
US
I
N
. Connects to the ASPI B
US
O
UT
of another ASPI Digital device.
15. ASPI B
US
O
UT
. Connects to the ASPI B
US
I
N
of another ASPI Digital device.
16. RS-232 R
EMOTE
C
ONTROL
P
ORT
. Connect this to an optional RS-232 remote
control device, such as a touch panel or personal computer COM port.
17. T
HREADED
H
OLE FOR
P
OWER
S
UPPLY
C
ABLE
C
LAMP
. Use the provided cable
clamp to clamp the power supply cable to the back panel of the EF1210 for strain
relief.
18. P
OWER
S
UPPLY
I
NPUT
. Connects to the external power supply provided with the
EF1210.
19. M
IC
/L
INE
I
NPUTS
. Connects to microphone at either mic or line level, with or
without phantom power (both selectable with DIP switches).
20. A
MIX
I
N
. Connects to the output of the automixer. This is internally mixed with
AEC A and is output to R
EC
. This is only needed when recording from the
EF1210. See “Playback/Record” on page 22 for a description of the Record and
Playback mixer circuitry. See also ‘T
O
CODEC” (number 26).
21. A
UX
I
N
. Connects to the output of a tape recorder, VCR, or other recording
device. Playback from a program audio device is only available with the Refer-
ence A input signal. See “Playback/Record” on page 22 for a description of the
Record and Playback mixer circuitry.
22. AEC A R
EF
I
NPUT
. Connect to the output of a CODEC or hybrid connected to
Zone A.
23. AEC B R
EF
I
NPUT
. Connect to the output of a CODEC or a hybrid connected to
Zone B.
24. L
INE
O
UTPUTS
. Connect to the inputs of an automixer or matrix mixer.
25. R
EC
. Connects to a recording device. R
EC
requires taking the output from the
automixer (or an output of a matrix mixer) and plugging that back into the
EF1210 so that the local side of the conference can be recorded. See “Playback/
Record” on page 22 for a description of the Record and Playback mixer circuitry.
26. T
O
C
ODEC
. Connects to the CODEC. When the output of the automixer is
plugged in to A
MIX
I
N
, the T
O
C
ODEC
signal is a mix of the A
MIX
I
N
and A
UX
I
N
signals. This is only needed when you want to add a Playback signal to the auto-
mixer output before it is sent to the CODEC. See “Playback/Record” on page 22
for a description of the Record and Playback mixer circuitry.
27. Z
ONE
A. Connects to an audio amplifier or powered loudspeaker in Zone A.
28. Z
ONE
B. Connects to an audio amplifier or powered loudspeaker in Zone B
(optional).
Caution!
Use only the power supply provided with the EF1210. Use
of other power supplies will void the warranty and may
cause damage.
Note.
A
MIX
I
N
must be a 0 dBu signal.
Caution!
Set mixer inputs to 0 dBu line level, phantom power OFF.