Owner's Manual

14
Connections
AC Power Cord
Insert the molded receptacle of the AC power cord into the AC power inlet on the back
of the BASIS 922uz. Plug the AC line connector into the AC outlet. The power supply
will accept from 100 to 240 Volts AC, 47 to 440 Hertz, without any changes. If a differ-
ent type of IEC power cord is required than supplied with your 922uz, contact QSC’s
Technical Services Department.
CobraNet
Connect one end of a category-5 cable terminated with a RJ45 plug into the CobraNet
receptacle. Insert the RJ45 plug into the receptacle with the lock-tab oriented toward
the bottom of the BASIS 922uz and push firmly until the connector locks into place (usu-
ally an audible “click” can be heard). Connect the other end to the appropriate Cobra-
Net network port.
QSControl
Connect one end of a category-5 cable terminated with an RJ45 plug into the QSCon-
trol receptacle. Insert the RJ45 plug into the receptacle with the lock-tab oriented
toward the bottom of the BASIS 922uz and push firmly until the connector locks into
place (usually an audible “click” can be heard). Connect the other end to the appropri-
ate QSControl.net network port.
Analog Universal Audio Inputs
Eight balanced audio inputs are provided, CH 1 INPUT - CH 8 INPUT. They accept
everything from mic level to line level signals and are equipped with software-select-
able +48V phantom power. Plug the input signal terminal block connectors into the
input receptacles. Connection pin-out is printed on the rear label for reference. Refer to
the illustrations for balanced and unbalanced connections. Use balanced audio inputs
whenever possible.
Each input has software-selectable +48V phantom power. Use cau-
tion when connecting equipment (particulary unbalanced equip-
ment).
Omni In
The six Omni In connectors are two-pin terminal block connectors. They accept contact
closure, TTL logic signals, 0-5 VDC control voltages, or 10k ohm variable resistors. The
contact closure and logic devices accommodate on/off or state-change events; the vari-
able resistor input provides full 8-bit resolution allowing for incremental-change
events. Refer to the illustrations for connection recommendations. NOTE! +48 volts is
the absolute maximum that can be applied to the + pin without damage. Voltage is with
respect to chassis or the - pin.
Logic Out
The four Logic Out connectors are two-pin terminal block connectors. They provide
CMOS logic level compatible signals for external devices.
Relay Out
Two sets of relay contacts are provided, RELAY OUT 1 and RELAY OUT 2. Contacts
are floating and rated for 30VDC, 1A. There is one common terminal, one normally-
closed contact terminal and one normally-open contact terminal. These are labeled as
C, NC and NO on the rear panel. When the relay is not energized, the C terminal is con-
nected to the NC terminal and the NO terminal is not connected; when the relay is ener-
gized the C to NC connection is opened and the C to NO connection is closed.
Analog audio input-
balanced connection.
Relay Out connec-
tions. Refer to text,
at left, for explana-
tion.
Logic Out connections.
Negative (-) terminal is
at chassis potential.
Positive (+) terminal
logic level is switched
using software.
CobraNet and
QSControl con-
nection. Accepts
ruggedized or
normal shell-less
RJ45 plugs.
Omni In connec-
tions. Variable
input must be 10k
ohm variable
resistor. Contact
closure input can
be a switch or
relay contacts.
These inputs can
operate software
“devices”. Nega-
tive (-) terminal is
at chassis poten-
tial.
Analog audio input-
unbalanced connec-
tion. Note jumper
wire between - and
ground.