Time History Software (Option 831C-Log); Time History Software (Option 831C-Log - Larson Davis SoundAdvisor 831C Reference Manual

A.6 Time History Software (Option 831C-LOG)
Time History Measurement System
Acoustic Measurements
Non-Acoustic Measurements
SoundAdvisor Model 831C
Time History can log an abundant selection of acoustic and non-acoustic metrics
at equal time intervals.
Time Period: Selectable for periods 2.5 ms, 5 ms, 10 ms, 20 ms, 50 ms, 100 ms, 200
ms, 500 ms, 1 s, 2 s, 5 s, 10 s, 15 s, 20 s, 30 s, 1 min, 2 min, 5 min, 10 min, 15 min, 20
min, 30 min, 1 h, and 24 h
Synchronization: Selectable to sync to time-of-day clock, for periods of 1, 2, 5, 10,
15, 20, 30 seconds; 1, 2, 5, 10, 15, 20, 30 minutes; and 1, 24 hours
Metrics are individually selectable.
Period < 20 ms:
• OBA 1/1 Leq*
• OBA 1/3 Leq*
• Period ≥ 20ms
• L , L , L , L
Aeq Ceq Zeq APeak
Period ≥ 100 ms:
• L , L , L , L
Aeq Ceq Zeq Apeak
• L , L , L , L , L
AS AF AI CS CF
• L , L , L
ASmax AFmax AImax
• L , L , L
ASmin AFmin AImin
• L -L , L -L
Ceq Aeq AIeq aeq,
*OBA processing must be installed (Firmware Option 831C-OB3), and the OBA
Bandwidth setting must be enabled on the meter.
Metrics are individually selectable.
Millisecond Resolution, Period < 1 s: Tms
Period ≥ 100 ms: Battery Voltage, External Power, Internal Temperature
426A12 or PRM2103 Metrics: Internal Temperature, Internal Humidity
SEN031 Metrics: Windspeed; Wind Gust Speed; Wind Direction; Temperature:
Avg, Min & Max; Humidity: Avg, Min & Max; Barometric Pressure
SEN032 Metrics: Windspeed; Wind Gust Speed; Wind Direction
, L , L
Cpeak Zpeak
, L , L
Cpeak Zpeak
, L , L , L , L
CI ZS ZF ZI
, L , L , L
CSmax CFmax CImax
, L , L , L , L
CSmin CFmin CImin
L
AFTtm5
, L , L , L
ZSmax ZFmax ZImax
, L , L
ZSmin ZFmin ZImin
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