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AA-930 AUDIO ANALYSER AUDIO ANALYSERS
SPECIFICATIONS
DA-523
Impedance
200 kW on differential mode
100 kW on normal mode
Level
Min. 60 mV, max. 200 V (7 steps)
Maximum voltage
300 Vp maximum
Fundamental range
10 Hz to 100 kHz
Measurement ranges
100 %, 20 %, 2 %, 0.2 %, selectable
Digital display
3 1/2 digits, 2000 reading points
Overange indication
Response
Selectable average or RMS value
Crest factor �3
Accuracy
(THD � 30 %, � 4 % f.e.)
20 Hz to 20 kHz
� 10 % (harmonics � 100 kHz)
10 Hz to 100 kHz
� 10 % - 30 % (harmonics �300 kHz)
Filters
400 Hz high pass
400 Hz � 5 % (-3 dB)
80 kHz low pass
80 kHz � 5 % (-3dB)
30 kHz low pass
30 kHz � 5 % (-3 dB)
Auxiliary outputs
Input monitor (Vi�50 mV)
1 V
rms
� 10 % constant
Output impedance
1 kW � 5 %
Harmonic components
1 V � 3 % (1000 reading points)
Power supply
Mains voltage
125-230 V AC � 10 % / 50 Hz
Consumption
16 VA
Mechanical features
Dimensions
W. 210 x H. 185 x D. 265 mm
Weight
4.5 kg
AA-930
AUDIO ANALYSER
AUDIO ANALYSERS
SPECIFICATIONS
AA-930
Milivolmeter
Ranges
0 - 2 V
0 to 28 dB (0 dB = 0,707 V)
0 to 200 mV
- 20 dB to 8 dB
Pass-band
20 Hz - 20 kHz (-1 dB)
Connector
RCA (600 W), DIN (47 kW)
Max. input voltage
12 V
Low frequency generator
Frequencies
315 Hz, 400 Hz, 1 kHz and 10 kHz
Distortion
� 0.03 % (0.05 % to 10 kHz)
Output level
0 - 2 V adjustable
Connector
RCA (600 W), DIN (47 kW)
Oscillator
Internal or external
Distortion meter
Ranges
10 %, 1 %
Tolerance
� 5 %
Inputs
Left channel, right channel
Input voltage
66 - 200 mV and 0.66 - 2 V
- 1.5 to 8.5 dB and 18.5 to 28.5 dB
Connector
RCA (600 W), DIN (47 kW)
Max. input voltage
12 V
Vattmeter
Ranges
20 W, 2 W
Load impedance
4 W � 5 %
Pass-band
20 Hz to 20 kHz (-3 dB)
Max. input voltage
12 V
Wow & Flutter
Ranges
W&F � 0.2 % and � 2 %, Drif � 3 %
W & F measurement
Linear or DIN filter
Connector
RCA (600 W), DIN (47 kW)
Max. input voltage
12 V
Reference signal
3.150 Hz (Quartz controlled)
Output level
0 - 0.707 mV (600 W)
Azimut
Frequence
315 Hz
Input voltage
0 - 2 V
0 to 28 dB (0 dB = 0.707 V)
0 to 200 mV
- 20 dB to 8 dB
Connector
RCA (600 W), DIN (47 kW)
Max. input voltage
12 V
Oscilloscope & monitor outputs
Outputs
Left and rigth channels
Output level
1 V RMS f.s.d.
Pass-band
20 Hz to 20 kHz (-1 dB)
Impedance
2 kW
Power supply
Mains voltage
110-125-220-230-240 VAC �10 %
50-60 Hz
Consumption
10 W
Mechanical features
Dimensions
W. 210 x H. 185 x D. 265 mm
Weight
4.3 kg
The AA-930 has been designed to facilitate the repair, tuning and analysis
of audio frequency equipment in general, such as cassette recorders,
record players, radio-cassettes, preamplifiers, low-frequency amplifiers,
etc. That is why six measurement instruments that are indispensable in an
audio service workshop have been combined in one piece of equipment.
The AA-930 is equipped with RCA 600 W and DIN 47 kW connectors
for the inputs and outputs. In addition, two BNC connectors on the
front panel and two RCA connectors on the rear panel allow the user
to view all of the signals measured by the instruments.
LF generator
This produces the most needed frequencies for the checking of sound
equipment (315 Hz, 400 Hz, 1 kHz and 10 kHz).
Stereo watt meter
With two sensitivities, 20 W and 2 W on an internal impedance of 4 W,
it measures the output stages in car radios, cassette recorders and
radio-cassettes.
The entire complicated measurement process of conventional distortion
meters is automatized in the DA-523, since both the tuning and the leveler
are automatic. The user only has to preselect the approximate level of the
inputs signal and of the distortion ranges. The response can be given in
mean or RMS value.
* Automatic tuning and leveler
* Response in mean value or rms value
* Additional outputs: constat distortion and
amplitude
DA-523
DISTORTION METER
36