Cirrus Research CR 151, Руководство пользователя

Страница: 37 / 47

optimus sound level meter user manual
Page 37
Menu / Quick Settings
The Quick Settings available are:
UK: 3dB, No Threshold, No Time Weighting, Criterion Level of 85dB
EU: 3dB, No Threshold, No Time Weighting, Criterion Level of 85dB
OSHA HC & PEL
Integrator 2: 5dB, 80dB Threshold, Slow Time Weighting, 90dB Criterion Level
Integrator 3: 5dB, 90dB Threshold, Slow Time Weighting, 90dB Criterion Level
OSHA HC & ACGIH
Integrator 2: 5dB, 80dB Threshold, Slow Time Weighting, 90dB Criterion Level
Integrator 3: 3dB, No Threshold, Slow Time Weighting, 85dB Criterion Level
MSHA HC & EC
Integrator 2: 5dB, 80dB Threshold, Slow Time Weighting, 90dB Criterion Level
Integrator 3: 5dB, 90dB Threshold, Slow Time Weighting, 90dB Criterion Level
Custom
Custom settings defined by the NoiseTools software
Electrical Outputs
AC Output
The AC Output is provided on the 3.5mm jack socket at the bottom of the instrument.
Do not use a Stereo Jack Plug in this socket. Only use a 3.5mm Mono Jack Plug.
The AC output has four settings: a combination of High or Low levels and a 0 or +20dB
amplifier.
Voltages and full scale levels are as follows:
High Levels (70-140dB):
0dB gain 1.3V pk-pk (450mV rms) at full scale 140dB
+20dB gain 1.7V pk-pk (600mV rms) at full scale 132dB
Low Levels (20-90dB):
0dB gain 400mV pk-pk (140mV rms) at full scale 90dB
+20dB gain 1.3V pk-pk (450mV rms) at full scale 90dB
The output is unweighted, i.e. Z-weighted.