Crown Audio IQ-P.I.P.-SLM - Manual (Page 11)

Page 11
IQ–P.I.P.–SLM Programmable Input Processor with Load Monitoring for IQ Systems
Reference Manual
3.10 Data Indicator
A Data LED is provided on the front panel. It flashes
whenever commands addressed to the
IQ–P.I.P.-SLM
are received. It can be forced to stay on by IQ software
to assist with troubleshooting of an
IQ System.
3.11 Aux Port
A 3-pin Eurostyle removable barrier-block connector is
provided to control auxiliary equipment. The status of
the Aux In and Aux Out ports can be monitored, and
the Aux Out port can be controlled, via the
IQ System
using IQ software.
The Aux output can be used to signal a failed test, amp
fault, or to signal or switch external equipment like other
IQ Aux ports. When used in this mode, the Aux Out
uses reverse logic (high = pass; low = fail), so the unit
will not give a false pass signal when it has no power.
Both an Aux Out control and indicator are provided in
IQ software to turn the output auxiliary port of the P.I.P.
on and off., and to indicate the current on/off status of
the Aux port. When on, +15 VDC is supplied across
the OUT and
(GND) pins of the Aux port. A total of
15 milliamps of current is available. A 1.5 K ohm resis-
tor protects against shorts.
In addition, the Aux input can be used to manually trig-
ger a test. This is required when the unit is operated
without a computer running IQ software actively at-
tached. When the presence of an input signal (5 to 15
VDC) is detected across the IN and
(GND) pins of
the Aux port, the IQ software will signal the presence of
a logic high.
For more information on configuring the Aux port to
activate Aux In Testing and Aux Out Reporting options,
see Section 4.9.
3.12 Memory Backup
Local EEPROM memory provides secure, nonvolatile
storage of all measurements and settings. This means
that the generator settings and test data will not be lost
when power is removed from the unit. The factory de-
fault setting for the memory backup feature is “en-
abled,” although this can be disabled, if desired. When
enabled, the backup stores all run-time parameters that
can be controlled by the IQ software into nonvolatile
memory (EEPROM) at approximately one-second in-
tervals. When disabled, all run-time parameters are re-
turned to the factory defaults whenever the unit loses
power.
Caution: Be careful to turn on the memory backup fea-
ture if the input attenuators will be used to set critical
levels. If the memory backup feature is turned off and
the
IQ–P.I.P.-SLM loses power, the attenuators will be
reset to 0 dB, resulting in the loudest possible signal.
3.13 Amp Mode
The stereo/mono mode of the amplifier can be stored
into the unit’s memory so the
IQ System is aware of the
amplifier’s stereo/mono switch setting. Storing this set-
ting serves as an “electronic reminder” to the system—
however, the stereo/mono mode cannot be controlled
with this setting. The modes available are Stereo (Dual),
Bridge-Mono and Parallel-Mono. This software amp
mode setting is controlled by the
IQ System.
3.14 Amplifier Information
Several items of information about an amplifier can be
displayed by the IQ software. These include the manu-
facturer, model, date code, serial number and revision
level. Which items are available depends on both the
amplifier and the IQ software used.
3.15 User Labels
The IQ–P.I.P.-SLM features a “user label” capability
which gives you a way to enter and keep any informa-
tion you choose into two user labels of 15 characters
each. Once created, the text of these labels is stored
both in the dataframe and in the memory of the P.I.P.
itself. The text in user label 1 is also used as a part of
the caption at the top of the control panel The text of
these labels is edited using the IQ software.
3.16 User Default Settings
The parameters for all functions (except the amplifier
ID code or user scale factors) can be saved as “user
default” parameters within the component itself. This
user preset, which can only be triggered by pressing
the reset switch located on the component for less than
two seconds, will restore all settings to the “user de-
fault” values. Please consult the documentation of your
IQ software for instructions on setting the “user default”
values.
3.17 Reset
A recessed reset switch, located on the P.I.P.’s front
panel, enables the
IQ–P.I.P.-SLM to be restored to one
of two sets of default settings. A straightened paper
clip or similar object is required to press the reset
switch.