Crown PIPISO Owners manual
P.I.P.-ISO
ISO
Programmable
Input Processor (P.I.P.)
E106377
®
Applies only to North
American units.
CH-2 INPUT
+–
—WARNING—
THIS P.I.P. PROVIDES FULL ISOLATION
FOR ISO-MODIFIED AMPLIFIERS ONLY!
DO NOT CONNECT THE OUTPUT GROUND
LUG TO THE INPUT COMMON OR CHASSIS
GROUND. REFER TO P.I.P.–ISO OWNER’S
MANUAL FOR FURTHER INFORMATION.
CH-1 INPUT
+–
© 1997 by Crown International, Inc., P.O. Box 1000,
Elkhart, Indiana 46515-1000 U.S.A. Telephone: 219-294-
8000. Crown
Professional Audio Division of Crown International, Inc.
Trademark Notice:
Macro-Tech
®
and
P.I.P.
modules are produced by the
Com-Tech
P.I.P.
®
®
,
are registered trademarks of
Crown
®
,
Crown International, Inc. Other trademarks are the
property of their respective owners.
Amcron
125354-1
10/97
®
,
P.I.P.-ISO
Page 2
P.I.P.-ISO
CH-2 INPUT
ISO
+–
—WARNING—
THIS P.I.P. PROVIDES FULL ISOLATION
FOR ISO-MODIFIED AMPLIFIERS ONLY!
DO NOT CONNECT THE OUTPUT GROUND
LUG TO THE INPUT COMMON OR CHASSIS
GROUND. REFER TO P.I.P.–ISO OWNER’S
Programmable
Input Processor (P.I.P.)
MANUAL FOR FURTHER INFORMATION.
Fig. 1.1 P.I.P.-ISO
1 Welcome
Thank you for purchasing the
Crown
P.I.P.
quickly install in the rear panel of
many Crown amplifiers.
stands for “Programmable Input
Processor.” Their versatile features expand the capabilities of
your amplifier and enable you to
customize it for your particular
needs.
The
with ISO-MODIFIED
series amplifiers. If it is used with
an amplifier that is not iso-modified
it will not have full isolation. In such
a case, only the input (not the output) will be isolated from ground.
The
MOD KIT” so a
fier can be iso-modified. (These
kits are also available separately.)
The amplifier modification
should be performed only by a
qualified technician. Once an
amplifier has been iso-modified, it
should not be used with any other
P.I.P.
P.I.P.-ISO
®
modules are designed to
accessory.
P.I.P.
P.I.P.-ISO
is intended for use
Com-Tech
P.I.P.-ISO
modules except the
comes with a “ISO-
Com-Tech
ampli-
P.I.P.-
CH-1 INPUT
+–
ISO
. (It is also possible to iso-
modify a
Macro-Tech
plifier but the procedure is different. Contact the Crown Technical
Support Group for more information, if required, at 219/294-8200
or 800/342-6939.)
An iso-modified amplifier with a
P.I.P.-ISO
has completely isolated
outputs—the output voltage available between the positive and
ground terminal is not referenced
®
to earth ground. Even if either output terminal is continuously
shorted to the earth ground (chassis), no damage will occur to the
amplifier or any equipment interconnected to it.
The amplifier inputs are isolated
by means of input transformers.
The transformers are designed for
1 kVAC breakdown isolation and
have less than 25 pF of primary to
secondary capacitance yielding
excellent common mode rejection.
In addition to isolation, the
ISO
includes a switchable high-
pass filter to attenuate unwanted
®
series am-
P.I.P.-
Page 3
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