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@crown
* System
®
CH 1
AMP OUTPUT
VOLTAGE
CH 2
CH 1
AMP OUTPUT
CURRENT
CH 2
CH 1
PIP INPUT
LEVEL
CH 2
+
BALANCE
-
CH 1
TO SINGLE
ENDED CONV.
BALANCED
AUDIO INPUTS
+
BALANCE
-
TO SINGLE
CH 2
ENDED CONV.
Installation
Before installing the P.I.P.-SLM into the
amplifier you must first configure the
switches, jumpers, and install or re-
move the PIP
2
resistor packs as needed.
When initial configuration is complete,
remove the existing P.I.P. from the am-
plifier and move the P.I.P. connector to
the P.I.P.-SLM. Set the amplifier sensi-
tivity to the desired position. The ribbon
cable folds up as you insert the module.
IQ MONITORING
Refer to the P.I.P.-SLM Block Diagram.
• Pre-fade input levels (+20 to –40 dBu).
• Amplifier output signal level (0 to –40
dB re scaled rated output).
• IOC (Input/Output Comparator) indi-
cates distortion >0.05%.
• ODEP (Output Device Emulation Pro-
tection). ODEP is an amplifier circuit
that calculates thermal headroom of an
amplifier and is reported in IQ as a per-
centage of thermal headroom used.
• Aux Port input sense.
®
Product Reference
P.I.P.-SLM (Page 2 of 3)
REF VOLTAGE
A / D
CONVERTER
RESET
AUX OUT
REM STANBY
DATA LED
IQ ADDR SWITCH
1
DIGITALLY
BUFFER
CONTROLLED
ANALOG
STAGE
SWITCH
2
DDS SINE
WAVE GEN.
P.I.P.-SLM Basic Block Diagram
IQ CONTROL
Refer to the P.I.P.-SLM Block Diagram.
The P.I.P.-SLM supports the complete
basic feature which consists of:
• Power (high voltage rails).
• Mute.
• Attenuation (0.5 dB steps from 0 to 80
dB).
• Polarity (XLR pins 2 and 3).
• Aux Port output voltage.
• DSPI/Data LED.
• Memory backup.
• User defined default memory.
• Output meter scaling.
AUTO STANDBY
Energy conservation is automated with
this function that allows the amplifier to
idle at a fraction of its normal idle draw.
Per channel with the following variables:
—On-Off
—Threshold (input)
—Turn-off Delay (minutes)
—Turn-on Delay (one switch for both
channels, when on adds a delay based
on address and when off the amplifier
powers up within 8 msec after breaking
threshold)
MONITOR INPUTS
INPUT
INPUT MUX
RECEIVER
A/D CONV.
OUTPUT
MICROCONTROLLER
DRIVER
8K x 8
EEPROM
8K x 8
RAM
1
1
DIGITALLY
BUFFER
CONTROLLED
ANALOG
STAGE
ATTENUATOR
2
2
SLM FUNCTIONS
System and Load monitoring is the major
feature benefit of the P.I.P.-SLM. The
purpose of the SLM function is to verify
repeatability of performance of the au-
dio system. Reference data is first es-
tablished and subsequent test sweeps
are performed to prove that system
operation is constant. The impedance
response test proves that the load per-
formance is constant while frequency
response proves that the electronics
are a constant. When syncronized with
an external sweep generator (such as
the SLM-8) full system frequency re-
sponse can be measured.
The signal generator is used to perform-
ing sweeps or to produce a constant
tone. To perform a sweep you must
configure the generator and data ac-
quisition. The tolerance criteria you set
determines whether the test will pass or
fail. The following is a complete list of
parameters associated with the SLM
functions:
—Sweep Enable
—Oscillator Enable
CROWN BUS
SERIAL
DATA INPUT
DROP-OUT
RELAY
CROWN BUS
SERIAL
DATA OUTPUT
1
CH 1
POLARITY INVERT
AUDIO OUTPUTS
& OUTPUT BUFFER
2
CH 2
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