Crown Audio IQ-P.I.P.-MEM - Manual (Page 31)

Page 31 Reference Manual
IQ–P.I.P.-MEM Programmable Input Processor for IQ Systems
6 Specifications
General
Internal Controls: An 8-segment
DIP switch is used to set the IQ
address (decimal range: 1–250).
Note: If address “0” is selected, the
IQ–P.I.P.-MEM will operate in
stand-alone mode. Two additional
8-segment DIP switches (one for
each channel) set the preamp gain
of each input and turn phantom
power on and off. A Reset switch,
accessible with a straightened
paper clip through the PIP panel,
resets all settings (except the
amplifier initialization data) to the
“user defaults” if it is pressed for
less than 2 seconds or the factory
defaults if it is pressed for more
than 2 seconds.
Connectors: Crown Bus Input:
Locking 5-pin female DIN
connector. Crown Bus Output:
Locking 4-pin female DIN
connector. Audio Input: Balanced
3-pin female XLR connector for
each channel. AUX: A 3-pin male
mini connector.
Indicators: A yellow DSPI (Data
Signal Presence Indicator) flashes
when a valid IQ command is re-
ceived from the IQ System via the
Crown Bus. Depending upon the
firmware version in your unit, the
DSPI can be forced on to facilitate
rapid troubleshooting of Crown Bus
wiring.
Auxiliary Feature: +15 VDC is
supplied across pins 1 (ground)
and 3 (+) of the AUX connector
when turned on by the IQ System
software.
Power Requirements: When
installed into a Crown PIP-comp-
atible amplifier, the unit receives
±24 VDC.
Crown Bus Data Communi-
cation
Protection: If communication is
lost, the unit will continue to
function with the last commands
received.
Data Rate: 38.4 K BAUD.
Data Format: Serial, binary,
asynchronous; 1 start bit; 1 stop
bit; 8 data bits; no parity.
Crown Bus Interface Type:
Optically isolated 20 milliamp serial
loop.
Operation: Half duplex.
Intelligence: 8-bit microprocessor
with 12 K byte control program.
Transmission Distance: Variable
from 200 to 3000 feet (61 to 914 m),
depending upon wire capacitance.
Typically 1000 feet (305 M) using
shielded twisted-pair wire, #26
AWG or larger. Can be extended
with an IQ Repeater.
Audio
Please note: The audio speci-
fications are referenced to 0.775 V
(0 dBu). Measurements were made
at the output of the IQ–P.I.P.-MEM
module,itself.
Input Impedance: Nominally 24 K
ohms balanced and 12 K ohms
unbalanced.
Phantom Power: Nominally +15
VDC, 1.5 mA.
Microphone Preamp: Adds +20 or