1 welcome, Iq-rpt crown bus signal repeater, Page 5 – Crown Audio IQ-RPT User Manual

Page 5

IQ-RPT Crown Bus Signal Repeater

Page 5

IQ SYSTEM

HOST COMPUTER

SMX-6

IQ INTERFACE

SMX-6

MPX-6

AMPLIFIER

SMX-6

MPX-6

AMPLIFIER

WN B

LOOP 1

LOOP 2

Fig. 1.2 An IQ System

Fig. 1.3 An IQ System with an IQ Repeater

SMX-6

IQ INTERFACE

SMX-6

MPX-6

AMPLIFIER

SMX-6

MPX-6

AMPLIFIER

WN B

LOOP 1

LOOP 2

IQ REPEATER

IQ SYSTEM

HOST COMPUTER

1 Welcome

The

IQ-RPT repeater helps an IQ System

go the extra

mile by increasing the length of a Crown Bus loop. It
does this by reconstructing the data signal to prevent its
degradation. With a Repeater in a system, 1,000 feet
(305 meters) or more can typically be added to the
operating distance of a Crown Bus. And because more
than one repeater can be used on each loop, the potential
is impressive.

The Crown Bus is a serial communication loop designed
to transmit IQ commands and data. As implemented in
the

IQ-RPT, it is a 20-milliamp current loop operating at

38,400 baud. To function properly, Crown Bus loops must
be unbroken.

The

IQ-RPT works with all currently available Crown Bus

interfaces. These interfaces include the

IQ-PSI with one

Crown Bus loop, the

IQ-DRN-16 with two loops and the

IQ-INT II with 8 loops. IQ mixers (including the MPX-6,
SMX-6 and AMB-5) also have a single-loop Crown Bus
interface. Figure 1.2 shows an

IQ-INT II with two

connected Crown Bus loops.

POWER

INPUT

OUTPUT

STATUS

Fig. 1.1 IQ Repeater

The

IQ-RPT will typically extend a Crown Bus current

loop by 1,000 feet (305 meters) or more. Up to 57
repeaters can be added to a single loop, so total loop
distance my reach 58,000 feet (17.7 kilometers). That’s
almost 11 miles! Figure 1.3 shows a system with an

IQ-

INT II and repeater on its first Crown Bus loop.