EN-7
Display LCD
•
Display screens:
4 digit numerical indication of sound level, from 30.0 to 130.0dB with 0.1dB
resolution.
Bar-graph indication of current sound level with 1dB resolution.
Sound level range indicator: 30–90dB, 40–100dB, 50–110dB, 60–120dB or
70–130dB in five ranges.
Memory and Read indicator : 99 sets
•
Display update rate: 1 second
•
Display first indication: Depends on the condition the instrument when it was last
turned off.
•
Warning indications:
Out-of-range indications:
Ov
displayed at upper limit of the range
Un
displayed at lower limit of the range
Outputs
•
AC output (using selected frequency weighting)
Output voltage: 1Vrms (at full-scale of the range)
Output impedance: 5k
Ω
Load impedance:
≧
1M
Ω
•
DC output
Output voltage: 10mV/dB
Output impedance: 5k
Ω
Load impedance:
≧
1M
Ω
Power requirements
•
One 9V battery (006P or IEC6F22) manganese super heavy duty batteries or
equivalent.
•
Battery life: Approx. 25 hours
•
External power source: DC voltage from 6V to 12V
Current rating: Approx. 10mA @ 6V
Ambient conditions:
•
Environmental conditions: 23°C, 50%RH and 101.325 kPa
•
Operating conditions: -10°C to +50°C, 30% to 90%RH non-condensing
•
Storage conditions: -10°C to +60°C, <70%RH non-condensing
•
Effect of temperature: < 0.5dB (-10 to +50°C)
•
Effect of humidity: < 0.5dB (for 30%RH to 90%RH at 40°C, 1000Hz)
•
Effect of vibration: A 40 Hz 1m/s vibration produces no noticeable effect.
•
Effect of magnetic field: No noticeable effect.
