Ln .......................................................................................................................5-8
Leq .....................................................................................................................5-9
Dose-LDL ..........................................................................................................5-9
BATTERY .......................................................................................................5-14
MEMORY........................................................................................................5-14
Stopping the Measurement ...................................................................................5-15
Chapter 6
Timed Measurement
6-1
Using the Timer for Unattended Readings. ............................................................6-1
Using the Time Key Functions ...............................................................................6-4
Setting the Password Lock to Protect Settings .......................................................6-5
Chapter 7
History Functions
7-1
Setting and Viewing Advanced Functions..............................................................7-1
Time History ......................................................................................................7-1
Time History Data..............................................................................................7-3
Log .....................................................................................................................7-4
Interval History ..................................................................................................7-5
Exceedance.........................................................................................................7-8
Setting PassBy Functions.................................................................................7-12
Overload................................................................................................................7-14
Setting the Daily History Parameter .....................................................................7-14
Chapter 8
Parameters
8-1
Parameter Key Access Review ...............................................................................8-1
Entering and Exiting the Setup Menu ................................................................8-1
Locating Parameters...........................................................................................8-2
Changing Parameters — Enter, Modify.............................................................8-3
Error Messages...................................................................................................8-4
Learning to Store and Retrieve Setup Memory ......................................................8-4
Storing a Setup ...................................................................................................8-5
Recalling a Setup ...............................................................................................8-6
Model 820 Setup Parameters ..................................................................................8-7
System (1-20)
R U S..............................................................................8-7
Timer (21-27) U T............................................................................................8-10
Lock (28-34) U L .............................................................................................8-10
Calibration (35-38) U C ...................................................................................8-11
Sound Level Meter (39-50) .......................................................................... C8-11
Dose (51) ...................................................................................................... E8-13
