Larson Davis 820 Quick User Manual

Also see for 820: Technical reference manual

Larson Davis 820 Quick User Manual Manual pdf 1 page image

Model 820 Key FunctionsWhite Primary function keys, push button directlyShift Press U key first to access blue keysArrow Change or modify info in fields, use w/other keysfor other functionsKeys FunctionsBATT Percentage power remaining in 9 V batteryCAL Calibration information and controlCancel Return to previous function or cancel present func-tion (acts as an ESCAPE key to exit out of a menu)DOSE Dose and Projected Dose %ENTER Enter new parameters selected by userEXCD History for noise exceeding a programmed levelHIST Short interval Leq time historyINTV Statistical Interval HistoryLDL Allows user to recalculate TWA, SEL, dose, pro-jected dose readings with new exchangeLDN TWA with 10 dB penaltyLeq Equivalent Level=TWA based on 3dBLmax Maximum SPL for overall measurementLmin Minimum SPL for overall measurementLn SPL exceeded n% of run time, 4 user selectableLn’s shownLOCK Access to lock systemLOG Log of all Run/Stop actions which start /stop datataking processMEM Displays available memory & number of storedrecordsOFF Turn 820 offON Turn 820 on (when on acts same as “Cancel”)PEAK Highest weighted peak detector output level withdate and time of eventPRINT List of reports on scroll, key name for each oneRCL EEPROM and RAM registersRESET Restarts a measurement by erasing values just mea-suredR/S Start and Stop measurementsSEL Sound Exposure Level is the total energy for 1 sSETUP Access to parameters by number or keySLM Current Sound Pressure LevelSTR Storage registers for parameters and calibration(0-9)T.A. Time Weighted Average and German Takt MaximallevelsTIME Date and time last reset or measurement startTIMER Permits unattended measurementsUWPK Highest unweighted peak detector output level withdate/time of eventAlpha-Numeric Keyboard LayoutAlpha-numeric keys are available to enter 3 lines for theCompany Name and 1 line for Measurement Title. To entercompany and measurement information:• Press Rm02e• Choose name for reports and enter using alpha-numerickeypad as shown at left. Note that multiple shift presses arenecessary to enter certain characters• Press m and choose letters for name• After entering name, press e d to move to next line• Press m and enter letter for line 2• Press e d to move to line 3• Press m, enter letters for line 3,• Press e d to move to line 4, and enter theMeasurement Title• Press e (name appears on main screen)• Press c to return to main screenSetup Key Functions by Number• All parameters are accessed through R key• Each parameter is assigned a parameter number• Press R. Press m• Enter item # of parameter (820 Manual chap 8) and presse. Time, Day, Week, parameters 6-8• Scroll through parameters using ud• Top of parameters list: Press Uu• Bottom of Parameter list: UdSetup Key Functions by KeyMajor parameters (listed on keypad) are accessed by pressingR and desired parameter key or by pressing R, U ,and desired parameter key. For example, to access the intervalparameters, press RM.Lock Parameters• Access Lock Parameter: RUL P• Personal password: m, enter 1-8 characters, e• Lock Options: parameters 28-34• Unlock system: ULm enter password, eSLM Key OptionsCurrent SLM, Min, Max, Pk, UW, Leq, SEL; Alm Time,Temp, and serial communications are available by pressingCduSetup Storage Registers• Press Usd [repeated d cycles through setup stor-age registers 0 to 9] press e to store settings• Press URd [0 to 9] e to recall settings↑ ↓ ← →+ 7 8 9- 4 5 6tfihS 1 2 3lecnaC 0 . retnE% * ↵↵A B C DE F G HtfihS I J KlecnaC L M retnE; = raelC ecapSN O P QR S T UtfihS V W XlecnaC Y Z retnE& @ $ \! ? < >^ / ( )tfihS ` " :lecnaC # , retnEAlpha-Numeric Keyboard LayoutStandard Keyboard.Press U once toaccess these charac-ters.Press U twice toaccess these charac-ters.Press U threetimes to access thesecharacters.Model 820 Key FunctionsWhite Primary function keys, push button directlyShift Press U key first to access blue keysArrow Change or modify info in fields, use w/other keysfor other functionsKeys FunctionsBATT Percentage power remaining in 9 V batteryCAL Calibration information and controlCancel Return to previous function or cancel present func-tion (acts as an ESCAPE key to exit out of a menu)DOSE Dose and Projected Dose %ENTER Enter new parameters selected by userEXCD History for noise exceeding a programmed levelHIST Short interval Leq time historyINTV Statistical Interval HistoryLDL Allows user to recalculate TWA, SEL, dose, pro-jected dose readings with new exchangeLDN TWA with 10 dB penaltyLeq Equivalent Level=TWA based on 3dBLmax Maximum SPL for overall measurementLmin Minimum SPL for overall measurementLn SPL exceeded n% of run time, 4 user selectableLn’s shownLOCK Access to lock systemLOG Log of all Run/Stop actions which start /stop datataking processMEM Displays available memory & number of storedrecordsOFF Turn 820 offON Turn 820 on (when on acts same as “Cancel”)PEAK Highest weighted peak detector output level withdate and time of eventPRINT List of reports on scroll, key name for each oneRCL EEPROM and RAM registersRESET Restarts a measurement by erasing values just mea-suredR/S Start and Stop measurementsSEL Sound Exposure Level is the total energy for 1 sSETUP Access to parameters by number or keySLM Current Sound Pressure LevelSTR Storage registers for parameters and calibration(0-9)T.A. Time Weighted Average and German Takt MaximallevelsTIME Date and time last reset or measurement startTIMER Permits unattended measurementsUWPK Highest unweighted peak detector output level withdate/time of eventAlpha-Numeric Keyboard LayoutAlpha-numeric keys are available to enter 3 lines for theCompany Name and 1 line for Measurement Title. To entercompany and measurement information:• Press Rm02e• Choose name for reports and enter using alpha-numerickeypad as shown at left. Note that multiple shift presses arenecessary to enter certain characters• Press m and choose letters for name• After entering name, press e d to move to next line• Press m and enter letter for line 2• Press e d to move to line 3• Press m, enter letters for line 3,• Press e d to move to line 4, and enter theMeasurement Title• Press e (name appears on main screen)• Press c to return to main screenSetup Key Functions by Number• All parameters are accessed through R key• Each parameter is assigned a parameter number• Press R. Press m• Enter item # of parameter (820 Manual chap 8) and presse. Time, Day, Week, parameters 6-8• Scroll through parameters using ud• Top of parameters list: Press Uu• Bottom of Parameter list: UdSetup Key Functions by KeyMajor parameters (listed on keypad) are accessed by pressingR and desired parameter key or by pressing R, U ,and desired parameter key. For example, to access the intervalparameters, press RM.Lock Parameters• Access Lock Parameter: RUL P• Personal password: m, enter 1-8 characters, e• Lock Options: parameters 28-34• Unlock system: ULm enter password, eSLM Key OptionsCurrent SLM, Min, Max, Pk, UW, Leq, SEL; Alm Time,Temp, and serial communications are available by pressingCduSetup Storage Registers• Press Usd [repeated d cycles through setup stor-age registers 0 to 9] press e to store settings• Press URd [0 to 9] e to recall settings↑ ↓ ← →+ 7 8 9- 4 5 6tfihS 1 2 3lecnaC 0 . retnE% * ↵↵A B C DE F G HtfihS I J KlecnaC L M retnE; = raelC ecapSN O P QR S T UtfihS V W XlecnaC Y Z retnE& @ $ \! ? < >^ / ( )tfihS ` " :lecnaC # , retnEAlpha-Numeric Keyboard LayoutStandard Keyboard.Press U once toaccess these charac-ters.Press U twice toaccess these charac-ters.Press U threetimes to access thesecharacters.

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