Larson Davis Spartan 821 - Page 66

Spartan 821/721 Manual Instrument Performance Specifications A-19
Measurement Properties Specifications
Instantaneous “Live” Metric Specifications
For display and profile graph. Live metrics are not stored with measurement data.
Overall AnyData™ Metric Specifications
A primary frequency and time weighting is selected by setting for RMS and Peak level to display, all levels are
available in an “Any Level” matrix.
Integration Time Minimum, 1 second; Maximum, 30 days
Frequency Weightings
A, C, Z parallel and simultaneous for each time weighting; selected frequency
weighting (A, C, or Z) indicated by
ω
Time Weightings
Slow, Impulse, Fast, Linear, and Peak; simultaneously for frequency
weightings
Peak Rise Time 30 µs
Time Weighting A C Z Units
Linear --
L
Aeq
L
Ceq
L
Zeq
dB
Slow
L
AS
L
CS
L
ZS
dB
Fast
L
AF
L
CF
L
ZF
dB
Impulse
L
AI
L
CI
L
ZI
dB
Peak --
L
Apeak
L
Cpeak
L
Zpeak
dB
Time Weighting A C Z Units
Linear --
L
Aeq
L
Ceq
L
Zeq
dB
Slow Maximum
L
ASmax
L
CSmax
L
ZSmax
dB
Slow Minimum
L
ASmin
L
CSmin
L
ZSmin
dB
Fast Maximum
L
AFmax
L
CFmax
L
ZFmax
dB
Fast Minimum
L
AFmin
L
CFmin
L
ZFmin
dB
Impulse
L
AIeq
L
CIeq
L
ZIeq
dB
Impulse Maximum
L
AImax
L
CImax
L
ZImax
dB
Impulse Minimum
L
AImin
L
CImin
L
ZImin
dB
Peak --
L
Apk
L
Cpk
L
Zpk
dB