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The P630
generates sufficient power with the internal power amplifier
to energize all defects from air-gap problems, puffing
sounds, loose particles, constrained voice coil, cabinet
rattling, litze wire clatter, glue problems etc., which
generally speaking are known as Rub & Buzz distortion.
P630 are able to measure microphone
frequency response due to the built-in output compress
function. This enables a constant signal pressure even from
a standard loudspeaker. |
The system consists of a service friendly 19" P600
cabinet with standard sized modules plus a PCI card with 4 x 24 bit
A/D & D/A converters and a PCI I/O card to control the cabinet.
The cabinet contains protected 15 volt rms. power amplifier
(optional 20 volt rms.) , up to 6 different input modules, an I/O
module and microphone power supply.
The software is arranged in four modes, an operator mode, a
technician mode, a global set-up mode, and a utility mode, which all
are protected by passwords.
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The operator mode is for
day-to-day production testing of parameters alfaready set-up
in the technician mode. This mode is specially designed for
non skilled personnel or for fully automated operations.
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In the technician mode all
parameters as frequency range, test level, reference curves
limits, Rub & Buzz and THD filters etc. are customized to
the specific requirements for each individual test.
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In the global
set-up the graphical presentation, test control, paths for
files, chain of tests, statistics etc. are defined.In the global
set-up the graphical presentation, test control, paths for
files, chain of tests, statistics etc. are defined.
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For
post-processing and manipulation of stored data there are a
number of Utility functions as Export and Import of data,
Statistical analysis and graphical display of batch data
etc. The statistical analysis including calculation of
various numbers of standard deviation and average curves to
determine the test limits. The analysis is able to find a
best matched measured unit against the average or another
unit.
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The P630 is as standard equipped with two inputs. There are as
standard four analyzing channels, one for frequency response, one
for impedance and two for distortion / Rub & Buzz. Extra inputs (up
to six) can be added to the system.
All necessary hardware, cables and software etc. are included in
a standard delivery except for suitable microphones and PC.
New Functions have has added from version 1.3-c to 1.3-d
Start frequency of sweep changed from 20 Hz to 5 Hz as
minium.
New Functions have has added from version 1.3 to 1.3-c
A Bl test has been added to test for asymmetry distortion in
impedance to detect coil offset.
A Cpk / Ppk curve analyze has been added.
A Curve Editor in a table form has been added.
A Jitter function has been added.
A Curve Display Selector have been added to give a better curve
presentation.
New Functions have has added from version 1.2g to 1.3
Windows Vista supported.
New Functions have has added from version 1.1a to 1.2g
P630 now run on Marc4-d & Marc4-m boards.
Reset menu in edit mode have added a reset for each channel primary
and secondary.
A pure phase test has been added as a secondary test.
Separate THD measurement has been added as secondary test to enable
2 different Rub & Buzz measurement at same time.
EBP measurement and test added in impedance measurement.
Measurement of Re added in impedance measurement to support Q & EBP
functions.
Ambient Noise Check control has been added for better reliability.
A hardware configuration menu has been added to better add and
modify hardware.
A hardware calibrations menu has been added to enable user to file
calibrate and check hardware.
Thiele Small parameters added.
New Functions have has added from version 1.0 to 1.1
5 - separate sensitivity test points added.
2 - average test for the 5 sensitivity points.
Filter added for
channel C to enable Current distortion test in speakers - the
I-test.
Support external power amplifier this together with a
optional external box to enable impendence measurement in single or
multiplexed mode.
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