Pulsar Nova® sound level meter user manual
Page 55
2. The battery, type 6F22 (PP3) can now be eased out of its holder and replaced.
The battery should be eased out terminal side first by pushing against the
spring at the other end.
Ensure that the battery is inserted with the correct polarity with the negative terminal at
the contact with the larger cut out.
Battery type
The battery should be an alkaline battery, not an ordinary dry cell. The battery is 9 volts
when new and will operate the calibrator down to 6.4 volts.
When the battery voltage is below 6.6 volts but above 6.4 volts, the power LED will flash
to indicate that the battery voltage is low. When the battery voltage is below 6.4 volts
the calibrator will not turn on.
A discharged battery may allow switch-on but will soon drop in voltage and indicate low
battery or switch off.
Specifications
Frequency 1kHz ± 1%
Sound Level 94dB re 20μPa
Standardisation Model 105 - IEC 60942:2003 Class 1
Model 106 - IEC 60942:2003 Class 2
Distortion Less than 2%
Operating Humidity 25 to 90% Relative Humidity
Operating Static Pressure 65kPa to 108kPa
Operating Temperature -10
o
C to +50
o
C
Storing Temperature -20
o
C to +60
o
C
Effective Volume 6.19 cm3 ± 0.2 cm
3
Cavity Diameter 0.525 inch
Battery 1 x 9v 6F22 (Neda 1604)
Battery Life Approx 15 Hours Continuous Use
Battery Voltage 9v Nominal (10v Max, 6.4v Min)
Weight With Battery 185g
Dimensions 135mm x Ø48mm
Technical Information
The normal mode of operation of the calibrator is with the unit switched on.
When the LED indicates the unit is switched on this produces the greatest radio
frequency emissions.
The calibrator continues to function after exposure to contact discharges up to 4kV and
air discharges up to 8kV, for both positive and negative voltages relative to earth
ground. The calibrator conforms to IEC 60942:2003 for a modulated root-mean-square
electromagnetic field strength of 10 V/m.
The maximum susceptibility to power and radio frequency fields is with the cavity facing
away from the emitter with the battery compartment facing the table, the antenna
polarisation horizontal and the calibrator switched on.
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