Page 9
IQ–P.I.P.–DSP Programmable Input Processor with DSP for IQ Systems
Reference Manual
D. Reset Switch
A multifunction reset switch is provided to restore the
IQ–P.I.P.–DSP to a prior state. It can be depressed with
a straightened paper clip through the small hole in the
P.I.P. panel. Press the reset switch for less than 2 sec-
onds and all settings, except the amplifier model scale
factors, will be reset with “user default” parameters and
the Data LED will flash once. (If no “user default” set-
tings have been stored, the unit will be reset to the “fac-
tory default” settings described next.) Press the reset
switch for more than 2 seconds and the same settings
will be reset with “factory default” parameters and the
Data LED will flash twice. After the unit has been reset
to the factory default settings, it will behave like a stan-
dard
P.I.P.-FX until it is reprogrammed by an IQ Sys-
tem or it is toggled to the “user default” settings.
WARNING:
Pressing the reset switch can cause the
IQ–P.I.P.–DSP to emit a brief pulse. We recommend
that the level controls of the amplifier be turned down
before pressing the reset switch.
E. Data Signal Presence Indicator (DSPI)
The Data Signal Presence Indicator (DSPI) is a Data
LED which flashes whenever a valid IQ command has
been received. The indicator can also be forced to stay
on to aid rapid troubleshooting of the Crown Bus wir-
ing.
F. Crown Bus Input Connector
A lockable 5-pin female DIN connector is provided for
input connection to the Crown Bus. A mating
Switchcraft 502-series connector can be ordered from
Crown (part C 7776-5). Pin 1 is negative (–), pin 2 is
positive (+), and pin 3 is ground (gnd). Pins 4 and 5
are not used.
G. External Power Input
A mini jack is provided to receive power from an exter-
nal 24 VDC, 400 mA source. External power is not
needed when the
IQ–P.I.P.–DSP is installed in a Macro-
Tech 5000VZ or 10,000, a Com-Tech, a Reference or a
PIP2-compatible amplifier. However, other Macro-Tech
models may require additional power for the
IQ–P.I.P.–
DSP. An external 120 VAC power adapter (C 7926-6)
is available from Crown. See Section 3.8.
CAUTION:
Use only an individual, isolated power sup-
ply for each
IQ–P.I.P.–DSP. Do not attempt to share a
common power supply with more than one unit or the
IQ–P.I.P.–DSP modules may be damaged.
H. Crown Bus Output Connector
A lockable 4-pin female DIN connector is used for output
connection to the Crown Bus. A mating Switchcraft 502
series connector can be ordered from Crown (part
C 7777-3). Pin 1 is negative (–) and pin 2 is positive (+).
Pins 3 and 4 are not used.
I.
P.I.P. Edge Connector
The gold-plated edge connector of the top IQ circuit
board inserts into the
P.I.P. connector inside the back
of the amplifier. Use care when installing a
P.I.P. mod-
ule to be certain that the edge connector is properly
inserted into the amplifier’s
P.I.P. connector.
J. Amplifier Output Pad Jumpers (JP4, JP5)
These jumpers enable the circuitry that pads the out-
put signal feeding the
IQ–P.I.P.–DSP so it can be prop-
erly scaled. They should normally be set to the “IN”
position as marked on the digital circuit board. Use the
“OUT” position whenever the unit is installed into a
PIP2-compatible or Macro-Tech 5000VZ amplifier.
K.
PIP2 SIP Sockets (RN1, RN2)
These eight-pin SIP (single in-line package) sockets
are provided for full
PIP2 compatibility. IQ-P.I.P.-DSP-
PIP2 modules (required for PIP2-compatible amplifiers)
should come with the SIP networks already installed.
The SIP networks are not required and should be ab-
sent on standard
IQ-P.I.P.-DSP modules.
L. IQ Circuit Board (Top)
The top circuit board contains the IQ communication
and data acquisition circuitry, including the IQ address
switch (SW1), amplifier output pad jumpers (JP4, JP5),
PIP2 SIP sockets (RN1, RN2) and the P.I.P. edge con-
nector.
M. Audio Circuit Board (Bottom)
The bottom circuit board contains the audio analog and
digital signal processing circuitry.
N. IQ Address Switch (SW1)
An 8-section DIP (dual in-line package) switch is used
to set the IQ address of the unit (see Section 3.1). This
switch is located on the top circuit board. Each IQ com-
ponent on a Crown Bus is given a unique IQ address
so it can be independently controlled and monitored.
Two or more IQ components of the same type should
NEVER have the same address on the same Crown
Bus loop.