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Effects of Humidity:
Storage Environmental Conditions
Humidity:
Temperature range:
Pressure:
Microphone
Internal electret capsule 10mV/Pa nom +/-3dB within ½" preamplifier.
Calibration
Auto calibration by application of 1kHz @ 114 or 94dB calibrator (CEL-110/2 or CEL-
110/1). ±1dB calibration range.
Power Supply
External DC:
5VDC (via USB 5 pin mini B)
Batteries:
3x AA, Rechargeable NiMH or Alkaline cells
Battery Life:
Typically 35 hours
Power consumption: ~65mA
Electromagnetic Compatibility
Instrumentation is designed and tested to comply with the following EMC and ESD
Standards:-
IEC 61000-4-2
Testing and Measuring Techniques - Electrostatic discharge
immunity tests.
IEC 61000-4-3
Electromagnetic compatibility (EMC) - Radiated electromagnetic
field tests.
IEC 61000-4-6
Electromagnetic compatibility (EMC) - Immunity to conducted
disturbances induced by radio frequency fields. Tested at 10V/m or
greater.
Effects of AC Power Frequency Fields
Less than ±0.5dB change in 74dB(A) 925Hz reference level when subjected to 160A/m
AC magnetic field at 50 and 60Hz.
Display
128x128 Mono Graphics LCD, 0.5 seconds update rate.
Connectivity
USB: USB 2.0 via 'mini B' socket. For SPL output (software required) weighted as per
selected frequency and time weightings.
AUX Socket (2.5mm stereo):
Less than ±0.5dB over the range 30 to 90% relative
humidity (non-condensing), relative to the value at
reference conditions.
0 to 90%RH in the absence of condensation.
o
-20 to +60
C.
65 to 108kPa
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