Allen&Heath MixWizard3 14-4-2 - Manual (Page 26)

26 WZ 3 14:4:2 User Guide
Output balance options The aux and matrix
outputs are impedance balanced as standard
operating at nominal -2dBu and with +21dBu
maximum drive. They provide similar interference
rejection to electronically balanced outputs when
connected to balanced equipment inputs. An
electronically balanced option is available if you
require nominal +4dBu and higher output drive up to
+26dBu over very long cable runs. However, it is not
usually necessary to fit this option as the impedance
balanced drive satisfies most applications. Check
that you really need the option before fitting it.
There are two balanced driver ICs which may be
used. Either is suitable. These are available from
Allen & Heath or most electronic component
suppliers. The Allen & Heath part number is shown
below:
SSM2142P A&H Part AE0302
DRV134 A&H Part AE5725
For each aux master, snip the legs of the two zero
ohm resistor links next to the IC socket. This
removes them from the circuit. Now simply plug the
option IC into the socket. Observe the correct IC
pin1 orientation and make sure its legs are correctly
aligned with the socket. Test the output once the
work is complete. You should measure the same
level but opposite polarity signal between + (hot) and
ground, and – (cold) and ground.
Sys-Link II input/output option A blank
plate is fitted here as standard. This may be
replaced with an optional card which provides the
console inputs, outputs and PFL system on two
37way D connectors for linking to other Allen &
Heath consoles already fitted with Sys-Link II. The
WZ
3 14:4:2 can become an input channel expander
(slave) or have its number of input channels
expanded (master) when linked to other consoles.
A 37way shielded multi-core cable carries the
MixWizard balanced mix signals and PFL system to
or from the other console.
IMPORTANT: Note that you need an adapter cable
if you are connecting Sys-Link II (Version 2) to the
older Sys-Link I (Version 1) standard.
For full details please refer to the Sys-Link option
Applications Note AP5738 and Fitting Instructions
AP5737.
GROUP
MASTER R
MASTER L
MATRIX AB
BALANCE
AUX 1-4
BALANCE
AUX5
BALANCE
AUX6
BALANCE
SLAVE CONSOLE
SYS-LINK II OUTPUT
WZ314:4:2
SYS-LINK II OUTPUT
WZ314:4:2 OR OTHER A&H CONSOLE
SYS-LINK II INPUT
MASTER CONSOLE
37WAY CABLE
SYS-LINK II INPUT