Connecting PC; 3 Hardware Installation; IQ Mixer / Multiplexer- Page 10

Page 10

IQ Mixer / Multiplexer  Hardware Installation

Rev. 0

3 Hardware Installation

The installation of an IQ mixer/multiplexer consists
of two major parts: installing the hardware and con-
figuring the software. This manual deals only with
hardware installation. Refer to the appropriate soft-
ware manual for instructions in setting up and oper-
ating your unit.

Provide adequate cooling if the unit will be used in a
hot environment. 

Allow one empty rack space (1.75

inches or 4.4 cm.) between each unit if more than
four units will be stacked in a cabinet. 

Each empty

rack space should be sealed with a blank rack
panel.

The hardware installation is divided into 4 steps:
1) connecting to a host computer, 2) connecting to
the Crown Bus, 3) connecting the audio inputs and
outputs and 4) connecting auxiliary devices.

3.1 Connecting to a Host Computer (Step 1)

An IQ host computer is an IBM

®

 PC compatible or

Apple

®

 Macintosh computer which is used to con-

figure or control/monitor part or all of an 

IQ System.

Depending upon the design of your 

IQ System, it

may or may not require a host computer during
normal operation.

How the mixer/multiplexer will be used will deter-
mine whether or not it will need to be connected
directly to a host computer. If the unit will be con-
nected to the Crown Bus it will not need to be
connected directly to a host computer. The following
circumstances require connection to a host com-
puter:

• If a Crown Bus will not be used, the mixer/mul-

tiplexer will need to be connected to a host
computer so the software inside the unit can
be configured. Afterward, if manual control is
not required, the host computer can be discon-
nected.

• If the mixer/multiplexer must be configured be-

fore it is installed into an IQ System, it must be
connected directly to a host computer for con-
figuration. The onboard battery of the unit will
maintain its software configuration for up to 60
days without it being plugged into an AC
source.

• If the mixer/multiplexer will be used as an IQ

interface (Option 1) it will need to be con-
nected directly to a host computer.

One of the advantages of connecting directly to a
host computer is that a separate IQ interface (IQ-
INT) is not required. If you plan to configure the unit

Fig. 3.1  An IQ System with a PC Host Computer and Two Mixer/Multiplexers

ENABLE

DSPI

ENABLE

CH1

CH2

ODEP

POWER

OFF

IOC

SPI

ENABLE

CH1

CH2

ODEP

POWER

OFF

IOC

SPI

ENABLE

CH1

CH2

ODEP

POWER

OFF

IOC

SPI

ENABLE

DSPI

ENABLE

CH1

CH2

ODEP

POWER

OFF

IOC

SPI

ENABLE

CH1

CH2

ODEP

POWER

OFF

IOC

SPI

ENABLE

CH1

CH2

ODEP

POWER

OFF

IOC

SPI

CROWN BUS LOOP 1

CROWN BUS LOOP 2

RS232