Phase Check - Phonic PAA3 User Manual

PHASE CHECK

Measuring the phase of a signal allows you to
figure out whether a speaker is correctly wired. A
polarity signal is usually needed when checking
the phase of a speaker or ensure that an output
connection is correct.
Procedure:
1. Go to the SPL/LINE and select dBu to
check a device's output connection or SPL
to check a speaker's wiring.
2. Go to the SETTING menu, and select
POLARITY (or play the included PAA3 CD
through your system).
3. If checking speaker wiring, stand one
meter in front of the speaker that plays the
polarity signal, go to the
PHASE CHECK menu
and activate.
4. A large "+" appearing on
screen means the signal
is in phase, and the wiring
is correct.
5. If instead of a "+" you get
a "-", the speaker is out
of phase and should be
corrected.
6. A big "?" or a screen
switching between plus
a n d m i n u s s y m b o l s
m e a n s t h e s o u n d
pressure level is at a level
that is not detectable by
the PAA3. So turn it up!
ATTENTION: Make sure the
sound pressure level of the polarity signal from
the system is louder than the environment noise,
otherwise the PAA3 will not be able to detect the
phase of the speaker.
16
GENERATOR
The PAA3 can send out pink noise, a polarity
signal, and a 1 kHz tone, all of which is sent out
via the Male XLR connector (on the bottom of the
PAA3) to any external system, at a level of -10 dBu.
Tones:
Pink noise: mostly used for acoustic
environment adjusting. For example: sound
system equalization. Polarity: often used to
check the phase of speakers.
1 kHz tone: a widely used among the
professionals for audio signal testing.
GENERATOR
OFF
PINK NOISE
POLARITY
1K Hz
ESC
A 31 100 315 1K
Procedure:
1. Connect the PAA3 to your audio system via
the XLR-male connector on the bottom of
the device.
2. Go into the GENERATOR menu and select
one of the signal to activate.
3. Select ESC to return to previous menu or
press OFF to cancel.
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