Crown Audio IQ-P.I.P.-SLM - Manual (Page 14)

Page 14
IQ–P.I.P.–SLM Programmable Input Processor with Load Monitoring for IQ Systems
Reference Manual
Please note that when Sync Mode is selected, the main
audio inputs are used and no digital signal is produced by
the
IQ–P.I.P.–SLM's internal DDS, since it is assumed that
an appropriate alternate DDS (from an IQ–SLM-8, for ex-
ample) is being properly utilized. When Sync Mode is not
selected, however, the
IQ–P.I.P.–SLM uses its own DDS
and the main audio inputs are disabled.
See Section 4.10 for more information on Synchronous
Operation.
3.23 Auto Standby
The Auto Standby feature automatically turns off the
high-voltage supplies of the amplifier when no audio
signal is detected at the input for a predetermined
period of time. The channels are controlled
independently. Using it, many
IQ Systems can pay for
themselves in just a few years due to reduced energy
costs. There are four parameters which control this
feature:
Auto Standby on/off: Turns this function on/off.
Input Gate Level: Sets the level, in dB, below
which an amplifier channel’s high voltage supply
will be turned off. The range is from +16 dBu to
–40 dBu.
Turn Off Delay: Sets the time, in minutes, that the
input signal must remain below the Standby Level
before the channel’s high-voltage supply is turned
off. The range is from 0 to 255 minutes. A setting of
0 (zero) yields a turn-off delay of approximately 2
seconds to facilitate setup of the function.
3.24 Short Errors
The Short Errors Reporting feature will automatically
signal the presence of excessive ODEP levels (a sta-
tus most often caused by a short). When Short Error
Reporting is turned on, a warning will appear when
the ODEP level exceeds that set by the level control.
The level control value will be a percentage ranging
from 1% to 100%. NOTE: High ODEP levels indicate
that the amplifier is running to "hot." Oftentimes, this is
the direct result of a short along the outputs. Set the
ODEP Level to a value over which you believe it is rea-
sonable to assume that a short has occurred.
3.25 Fault Conditions
The Fault Conditions Reporting feature will automati-
cally signal the condition where the IOC is "locked"; that
is, input signal is present and appears normal, but no
output signal is being generated. You can choose to
have fault conditions reported to you via screen warn-
ings for either channel of an amplifier. When Fault Con-
dition Error Reporting is turned on, a warning will be
displayed if a fault condition exists while the input level
is below a level that you set (-40 dB to +16 dB).
Some P.I.P.s also have the ability to report Fault Errors
through the Aux Out port. This control, when turned
on, will automatically set the Aux Out port "high." Any
fault error detected will set this port "low." In this case,
the Aux Out on is the normal state of affairs, while Aux
Out off means trouble!
NOTE: It may be normal for an IOC error to exist at
extremely high input levels. Set your level at a level
below which an IOC event would be truly abnormal and
not just the product of excessive input level.
3.26 Crown Bus “Drop Out” Relays
“Drop out” relays are provided on the Crown Bus ports
to maintain the continuity of the IQ communication loop
even if the
IQ–P.I.P.–SLM loses power.
3.27 “No-Fault” Warranty
A three-year “No-Fault” full warranty is provided to
guarantee the specifications and protect your invest-
ment.