Crown Audio PSI - Manual (Page 5)

Page 5
IQ–PSI IQ Pocket Serial Interface
The IQ–PSI will function in “component mode” when a
host computer is not detected. In this mode the AUX
port will still be available for use, but the RS232 serial
port will be inactive. In addition, the unit’s Crown Bus
input and output will be closed to allow the normal flow
of communication around the Crown Bus loop.
Commands received at the unit’s Crown Bus input will
be analyzed and executed if they are addressed to the
IQ–PSI.
The AUX port of the IQ–PSI enables it to be connected
to a non-IQ component. For example, the AUX port
can be connected to a relay to turn on and off a remote
device. Or the AUX port can send and receive simple
logic signals. Whether the
IQ–PSI is being used as an
interface or as a component, the AUX port will continue
to function.
The IQ–PSI requires a single 9-volt battery or an
external AC source (an AC power adapter is included
with domestic units only). Battery life is approximately
one hour (alkaline cell).
This manual will help you successfully install and use
this new interface. We strongly recommend you read
all the instructions, warnings and cautions. Also, for
your protection, please send in the warranty
registration card today. And save your bill of sale—it
is your
official proof of purchase.
AUX CROWN BUS 10 VDC IN
1718 W. Mishawaka Rd.
Elkhart, IN 46517 U.S.A.
ENABLE DSPI RS232
POWER
P O C K E T S E R I A L I N T E R F A C E
Fig. 1.1 The IQ–PSI
1 Welcome
The IQ Pocket Serial Interface (IQ–PSI) is designed to
serve as a portable IQ interface, connecting a selected
Crown Bus loop to a host computer in an
IQ System. A
member of the IQ2 ™ family, the IQ–PSI supports all
IQ2 and legacy protocol components when operating
as a system interface. In addition, the
IQ–PSI features
a standard IQ AUX port, and can function as an IQ
component with its own IQ address.
The IQ–PSI automatically senses whether a computer
is connected to it by monitoring the RTS (Request To
Send) pin of its RS232 serial port. The
IQ–PSI will
operate in “interface mode” when a host computer is
detected. In this mode the
IQ–PSI can be directed by
the host computer to select any IQ component on the
same Crown Bus loop and send commands or retrieve
data. Input messages received on the Crown Bus are
transferred out the RS232 port to the host computer.
1.1 Unpacking
Please unpack and inspect the interface for any damage
that may have occurred during transit. If damage is found,
notify the transportation company immediately. Only you,
the consignee, may initiate a claim for shipping damage.
Crown will be happy to cooperate fully as needed. Save
the shipping carton as evidence of damage for the
shipper’s inspection.
Even if the unit arrived in perfect condition, as most do,
save all packing materials so you will have them if you
ever need to transport the unit.
NEVER SHIP THE UNIT
WITHOUT THE FACTORY PACK.