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30 Basic setups
Measurement setup (for community noise)
Models SE and DL
C-A measurement settings
The C-A measurement is determined from concurrent measurements of the
SPL by both meters. It can only be made if certain settings for Meter 1 and
Meter 2 are compatible. If any incompatibility exists, the L
c-a
selection in this
screen will be marked N/A (Not Available).
If you want to activate L
c-a
, have the following settings in place before you
visit the Measures screen.
• Thresholds - Both meters set to “Off” or the same value.
• Exchange rates- Both meters set to the same value.
• Time response - Both meters set to the same value.
• Frequency weightings- Meter 1 must be set to A-weighting; Meter 2
must be set to C-weighting.
Figure 3-6 is an example of the appropriate C-A settings for Meter 1 (left
side) and Meter 2 (right side). (Please see “Meter 1/Meter 2 Parameters” on
page 27 for setup details.)
Figure 3-6: C-A measurement settings for Meter 1 and Meter 2
Meter 1
• Press softkey to
toggle between
Meter 1/Meter 2
Slow response
A-weighting
Slow response
C-weighting
Meter 2