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@crown

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System

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 Product Reference

SMX-6 Automatic Mixer (Page 3 of 5)

The Crown Bus is asynchronous with 8
data bits, 1 start bit, 1 stop bit, no par-
ity, and operates at 38400 baud. The
SMX is not a U-Code protocol compo-
nent.

Serial Port:

The serial port on this unit is a  female
25 pin D-Shell.  RS232 and RS422 are
supported with 8 Data bits, 1 start bit, 1
stop bit, no parity. Up to  19200 baud
supported. The serial port for the SMX
may be used for direct communication
with a PC such that the SMX serves as
interface:

• May serve as interface for up to
20 components connected to the
Crown Bus.
• Components supported include
other SMX units, AMB-5 mixers,
MPX-6 mixers, PIP-AP, PIP-APM,
PIP-APS, all MRX matrixers, and the
White 4700 Series EQ.
• No support for U-Code protocol.

An alternative use for the serial port on
an SMX is the Crown Local Net (CLN).
CLN is a special operational mode that
would be used to build a wide automatic
mixer (two or more SMX units intercon-
nected) where system wide gate count

or priority structure control is required.
CLN involves a pseudo RS422 wiring
interconnection between SMX units.
When an SMX is placed in CLN mode
from within software the serial port may
then be used for CLN and only CLN (in-
terface capabilities are removed. To
configure SMX units for CLN a different
type of component must serve as sys-
tem interface.

Setup Switches:

• The  IQ Address is set by an 8 seg-
ment DIP switch. Valid address values
are 1 to 250 (0 and 251-255 are reserved
for system usage).
• RS232/422 Standard switch must be
configured appropriately for use of the
serial port.
• Baud is adjustable via DIP switch up
to 19200. This setting must be config-
ured properly for use of the serial port.
•  Parity is set ON or OFF and ODD or
EVEN via DIP switch. Normally set to
OFF, this setting only applies to use of
the serial port.

Memory Backup:

The unit is equipped with a  recharge-
able batter y. The unit has  60 day
memory backup on full charge.

COMPUTERIZED FEATURES

Monitoring:

Input audio level monitoring has a range
of –40 to +25 dB. Input level is sensed
between the preamp and VCAs for a
total of 6 sensors, one per input. The
output audio level is sensed at each
output mix bus with a range of –40 to
+25 dB.

DSPI:

The Data Signal Presence Indicator
(DSPI) light on the front panel flashes to
indicate data traffic addressed to or from
the unit. This light may be forced on from
software.

Aux Port:

The aux port on the mixer is used to send
or receive a control voltage. From soft-
ware you may turn the aux output on or
off. IQ software is also able to sense the
status of the aux input and is capable of
taking independent action based on a
sensed input.

Bus Output Relays:

Audio bus outputs are identical to their
respective main outputs in every way
except for the addition of software con-
trolled isolation relays.

VCA Gain Control:

The heart of the SMX is its functionality
as a mixer. Each input may be routed to
either or both outputs by VCAs under
processor control. The processor may,
in turn, be set up to control VCAs using
on board automatic intelligence or may
be controlled in real time manually from
software. The VCAs offer a control range
of –100 to +25 dB.

MANUAL MIXING IN REAL TIME

All setup for manual or automatic op-
eration is accomplished, at least initially,
with IQ software from a PC.  The SMX
has a software switch that puts the unit
into a manual mode or an automatic
mode. When in manual mode you may
make changes from software that affect
VCA gain in real time. Gain may also be
manipulated in real time from alternate
control devices such as a Drone or a
third party control device (Ex. AMX,
Crestron, Interface Controls, etc.). Once
VCA gains are set from the PC (or con-
trol device) the processor maintains that
gain structure until it receives an instruc-
tion to change. In the manual mode the
automatic features such as compres-

Gate

Priority

Input
Comp.

Auto
Level

Gate Count

Output Compressor

Manual Mode

"Real Time" Settings

Automatic Mode Settings

ON

OFF

ASA SWITCH

VCA Control

SMX-6 Manual or Automatic Operation

Содержание SMX-6

Страница 1: ... wide mixer with more than six inputs by taking the outputs of one mixer and going into the stack inputs of a sec ond mixer This means that main inputs do not have to be used to expand the effective size of the overall mixer Audio Main Outputs There are twosumming buses Each summing bus provides the out put mix for the corre sponding output chan nel Op amps buffer the summing bus to the output con...

Страница 2: ...TPUT BALANCED BUCHANAN CONNECTOR CPU MICRO PROCESSOR FROM INPUT SENSORS FROM OUTPUT SENSORS TO VCAs TO BUS RELAYS COMMUNICATION STANDARD INPUT 2 PRE AMP BALANCED BUCHANAN CONNECTOR GAIN POT 12 to 21dB M L P SWITCH P 25dB 44VDC M 25dB L 0 dB VCA 2 1 VCA 2 2 INPUT SENSOR TO CPU FROM CPU FROM CPU INPUT 3 PRE AMP BALANCED BUCHANAN CONNECTOR GAIN POT 12 to 21dB M L P SWITCH P 25dB 44VDC M 25dB L 0 dB V...

Страница 3: ...memory backup on full charge COMPUTERIZED FEATURES Monitoring Input audio level monitoring has a range of 40 to 25 dB Input level is sensed between the preamp and VCAs for a total of 6 sensors one per input The output audio level is sensed at each output mix bus with a range of 40 to 25 dB DSPI The Data Signal Presence Indicator DSPI light on the front panel flashes to indicate data traffic addres...

Страница 4: ...where 1 highest and 6 lowest priority Each VCA is set indepen dently Input Compressor The SMX 6 mixer is equipped with both input compressor and an output com pressor features The input compressor differs from a conventional compressor due to its feed forward structure This feed forward technology prevents breathing and virtually eliminates pumping The parameters for the in put compressor are Comp...

Страница 5: ... may serve as the system interface The IQ INT II IQ PSI Drone SMX 6 AMB 5 and MPX 6 are all com ponents which may serve as a system interface for an SMX 6 The Crown Bus is a serial data loop carrier of IQ com mand protocol Crown has implemented it as a two wire twisted pair current loop to allow for low cost long distance con nections For very long loops over 1000 feet data repeaters IQ RPT or fib...

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