4-3
O w n e r ’ s M a n u a l
Connections
DIGITAL EFFECTS
DIGITAL EFFECTS
FX Cards located
behind this cover plate.
In addition to the internal effects, the Digital
8•Bus provides several ways to connect
external effects devices.
Channel Inserts
Channels 1–12 are equipped with INSERT
jacks for connecting external processors into
each channel’s signal path. The insert point
comes after the Mic/Line preamp and just
before the analog-to-digital converter.
This is a TRS jack specially configured as a
combination Send/Return connection point. It
is configured with the Tip = Send, Ring =
Return, and Sleeve = Ground. This has become
somewhat of a standard in the industry, and
many cable manufacturers make cables
especially for this purpose. With nothing
plugged into the INSERT jack, the send signal
is directly connected to the return pin via the
normalling jack.
The INSERT jack can also be used as a direct
out from the mic preamps to tape. If you insert a
TS (mono) 1/4" plug only partially into the
INSERT jack (to the first click), the plug will not
activate the jack switch and will not open the
insert loop in the circuit (thereby allowing the
channel signal to continue on its merry way
through the mixer). This allows you to tap the
channel signal at that point in the circuit
without interrupting normal operation.
If you push the 1/4" TS plug in to the
second click, you will open the jack switch and
create a direct out, which does interrupt the
signal in that channel.
Do not overload or short-
circuit the signal you are
tapping from the mixer.
Doing so will affect the
internal signal.
Pin 1
+
Ch 8
Ch16
Ch24
Pin 2
shield
Ch 8
Ch16
Ch24
Pin 3
–
Ch 7
Ch15
Ch23
Pin 4
+
Ch 6
Ch14
Ch22
Pin 5
shield
Ch 6
Ch14
Ch22
Pin 6
–
Ch 5
Ch13
Ch21
Pin 7
+
Ch 4
Ch12
Ch20
Pin 8
shield
Ch 4
Ch12
Ch20
Pin 9
–
Ch 3
Ch11
Ch19
Pin 10
+
Ch 2
Ch10
Ch18
Pin 11
shield
Ch 2
Ch10
Ch18
Pin 12
–
Ch 1
Ch 9
Ch17
Pin 13
N/C
Signal
Description
Tape 1-8,
Bus 1-8,
and ALT I/O
Tape 1-8
Bus 1-8,
and ALT I/O
Tape 9-16
Tape 17-24
Pin 14
–
Ch 8
Ch16
Ch24
Pin 15
+
Ch 7
Ch15
Ch23
Pin 16
shield
Ch 7
Ch15
Ch23
Pin 17
–
Ch 6
Ch14
Ch22
Pin 18
+
Ch 5
Ch13
Ch21
Pin 19
shield
Ch 5
Ch13
Ch21
Pin 20
–
Ch 4
Ch12
Ch20
Pin 21
+
Ch 3
Ch11
Ch19
Pin 22
shield
Ch 3
Ch11
Ch19
Pin 23
–
Ch 2
Ch10
Ch18
Pin 24
+
Ch 1
Ch 9
Ch17
Pin 25
shield
Ch 1
Ch 9
Ch17
Signal
Description
Tape 9-16
Tape 17-24
Figure 4-5. DB-25 Pin-out Identification
AUX
1
+48V
PH
LINE IN
INSERT
1
MIC
“tip”
This plug connects to one of the
mixer’s Channel Insert jacks.
“ring”
tip
ring
sleeve
SEND to processor
RETURN from processor
(TRS plug)
Содержание 8-BUS Series
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