Facilities 1; 2 Facilities; Stack Audio Inputs- Page 8

Page 8

IQ Mixer / Multiplexer  Hardware Installation

Rev. 0

(Rear View)

(Front View)

2 Facilities

AUX Connector

A 3-pin male mini-XLR connector is used for remote
control of equipment lacking the Crown Bus. A 10
VDC power source is provided to control solid state
relays and other logic circuits. The auxiliary con-
nector also includes a high-impedance 10 VDC in-
put. (Section 3.4)

Stack Audio Inputs

These two stack inputs allow you to multiply the
number of audio inputs by stacking 2, 3, or more
units to build a 12x2, 18x2, or larger mixer. (Section
3.3.3)

DSPI

This yellow LED is a Data Signal Presence Indicator.
It flashes whenever a valid IQ command has been
received. The indicator can also be forced on to aid
rapid troubleshooting of the Crown Bus wiring.

Enable Indicator

This amber enable indicator shows that the unit is
receiving AC power.

Audio Input Gain Control

Each of the six input channels has a screwdriver-
set, calibrated gain potentiometer for adjusting the
input gain to the input signal level. They can be
used to compensate for different microphone sensi-
tivities. (Section 3.3.1)

RS232/RS422 Connector

This DB25 connector functions as a standard RS232
or RS422 serial communications port. It can be used
for connection directly to a host computer (Section
3.1) or, if Option 4 was purchased, for connection to
a Crown Local Net loop (Section 4.2).

Crown Bus Ground Connector

This chassis ground stud is provided to connect an

Figure 2.1  Front and Rear Panels

L

M

P

+

–

+

–

+

–

+

–

+

–

AUDIO
IN

6

+

–

+

–

+

–

+

–

+

–

MAIN

OUT

IN

AUX
CTRL

RS232 /  RS422

AUDIO
IN

5

AUDIO
IN

4

AUDIO
IN

3

AUDIO
IN

2

AUDIO
IN

1

120 VAC

60 Hz

20 W

AUDIO
OUT

2

AUDIO
OUT

1

BUS

STACK
IN

MAIN

BUS

STACK
IN

0

-5

-10

-12

5

10

15

21

ADD 25
FOR MIC

L

M

P

0

-5

-10

-12

5

10

15

21

ADD 25
FOR MIC

L

M

P

0

-5

-10

-12

5

10

15

21

ADD 25
FOR MIC

L

M

P

0

-5

-10

-12

5

10

15

21

ADD 25
FOR MIC

L

M

P

0

-5

-10

-12

5

10

15

21

ADD 25
FOR MIC

L

M

P

0

-5

-10

-12

5

10

15

21

ADD 25
FOR MIC

+ – + –

CROWN      BUS

SERIAL DATA LOOP

INPUT

GROUND

ONLY

IN