Model 90 Quantifier Sound Level Meter
Page 39
The default calibration level is 93.7dB for use with Pulsar Instruments Plc Acoustic
Calibrators set to the 94dB setting. The correction of –0.3dB is required to suit the
MK:224 and MK:216 Microphone capsules used by the MODEL 90 Series.
To adjust the calibration level, select the Cal Level option from the setup menu.
Key Press
Display
Comments
Use the Up and Down arrows to
adjust the level and the Left and
Right arrow keys to move between
the numbers.
Press OK to accept the calibration
level.
Pulsar Instruments Plcdoes not recommend the use of Acoustic Calibrators other than
those manufactured or supplied by Pulsar Instruments Plc for use with the MODEL 90
instruments.
Refer to the operating manual supplied with the Acoustic Calibrator to be used for
details of the correction required for use with an MK:224 or MK:216 Microphone
Capsule.
Display Resolution
The display resolution of the MODEL 90 instruments can be set to be either 0.1dB or
0.01dB. For most applications, the 0.1dB resolution is standard.
Key Press
Display
Comments
Use the Up and Down arrows keys
to select the display resolution
and press OK to select the
required display resolution.
Press Exit to return to the main
display.
