Larson Davis 820 Quick User Manual
Model 820 Key Functions
White Primary function keys, push button directly
Shift Press
U key first to access blue keys
Arrow Change or modify info in fields, use w/other keys
for other functions
Keys Functions
BA
TT Percentage power remaining in 9 V battery
CAL
Calibration information and control
Cancel 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 user
EXCD
History for noise exceeding a programmed level
HIST Short interval Leq time history
INTV Statistical Interval History
LDL Allows user to recalculate TWA, SEL, dose, pro-
jected dose readings with new exchange
LDN
TWAwith 10 dB penalty
Leq
Equivalent Level=TWAbased on 3dB
Lmax Maximum SPL for overall measurement
Lmin Minimum SPL for overall measurement
Ln SPL exceeded n% of run time, 4 user selectable
Ln’
s shown
LOCK
Access to lock system
LOG Log of all Run/Stop actions which start /stop data
taking process
MEM Displays available memory & number of stored
records
OFF Turn 820 off
ON Turn 820 on (when on acts same as “Cancel”)
PEAK Highest weighted peak detector output level with
date and time of event
PRINT
List of reports on scroll, key name for each one
RCL EEPROM and RAM registers
RESET Restarts a measurement by erasing values just mea-
sured
R/S Start and Stop measurements
SEL Sound Exposure Level is the total energy for 1 s
SETUP Access to parameters by number or key
SLM Current Sound Pressure Level
STR Storage registers for parameters and calibration
(0-9)
T.A. Time Weighted Average and German Takt Maximal
levels
TIME Date and time last reset or measurement start
TIMER
Permits unattended measurements
UWPK Highest unweighted peak detector output level with
date/time of event
Alpha-Numeric Keyboard Layout
Alpha-numeric keys are available to enter 3 lines for the
Company Name and 1 line for Measurement Title. To enter
company and measurement information:
• Press
Rm02e
•
Choose name for reports and enter using alpha-numeric
keypad as shown at left. Note that multiple shift presses are
necessary to enter certain characters
• Press
m and choose letters for name
• After entering name, press
edto move to next line
•
Press
m and enter letter for line 2
• Press
edto move to line 3
• Press
m, enter letters for line 3,
• Press
edto move to line 4, and enter the
Measurement
Title
•
Press
e (name appears on main screen)
• Press c to return to main screen
Setup 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 press
e. Time, Day, Week, parameters 6-8
•
Scroll through parameters using
ud
•
Top of parameters list: Press Uu
• Bottom of Parameter list: Ud
Setup Key Functions by Key
Major parameters (listed on keypad) are accessed by pressing
R and desired parameter key or by pressing
R, U ,
and desired parameter key. For example, to access the interval
parameters, 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, e
SLM Key Options
Current SLM, Min, Max, Pk, UW, Leq, SEL; Alm Time,
T
emp, and serial communications are available by pressing
Cdu
Setup 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
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Alpha-Numeric Keyboard Layout
Standard Keyboard.
Press U once to
access these characters.
Press
U twice to
access these characters.
Press
U thr
ee
times to access these
characters.
Model 820 Key Functions
White Primary function keys, push button directly
Shift Press
U key first to access blue keys
Arrow
Change or modify info in fields, use w/other keys
for other functions
Keys Functions
BA
TT
Percentage power remaining in 9
V
battery
CAL Calibration information and control
Cancel 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 user
EXCD History for noise exceeding a programmed level
HIST
Short interval Leq time history
INTV Statistical Interval History
LDL Allows user to recalculate TWA, SEL, dose, pro-
jected dose readings with new exchange
LDN
TW
A
with 10 dB penalty
Leq Equivalent Level=TWA based on 3dB
Lmax Maximum SPL for overall measurement
Lmin
Minimum SPL for overall measurement
Ln
SPL
exceeded n% of run time, 4 user selectable
Ln’
s shown
LOCK Access to lock system
LOG
Log of all Run/Stop actions which start /stop data
taking process
MEM
Displays available memory & number of stored
records
OFF
Turn 820 off
ON Turn 820 on (when on acts same as “Cancel”)
PEAK Highest weighted peak detector output level with
date and time of event
PRINT List of reports on scroll, key name for each one
RCL EEPROM and RAM registers
RESET Restarts a measurement by erasing values just mea-
sured
R/S
Start and Stop measurements
SEL Sound Exposure Level is the total energy for 1 s
SETUP
Access to parameters by number or key
SLM Current Sound Pressure Level
STR Storage registers for parameters and calibration
(0-9)
T.A. Time Weighted Average and German Takt Maximal
levels
TIME Date and time last reset or measurement start
TIMER Permits unattended measurements
UWPK Highest unweighted peak detector output level with
date/time of event
Alpha-Numeric Keyboard Layout
Alpha-numeric keys are available to enter 3 lines for the
Company Name and 1 line for Measurement Title. To enter
company and measurement information:
• Press
Rm02e
•
Choose name for reports and enter using alpha-numeric
keypad as shown at left. Note that multiple shift presses are
necessary to enter certain characters
• Press
m and choose letters for name
•
After entering name, press
edto move to next line
•
Press
m and enter letter for line 2
• Press
edto move to line 3
•
Press
m, enter letters for line 3,
•
Press
edto move to line 4, and enter the
Measurement
T
itle
• Press
e (name appears on main screen)
•
Press c to return to main screen
Setup 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 press
e. Time, Day, Week, parameters 6-8
• Scroll through parameters using
ud
•
Top of parameters list: Press Uu
•
Bottom of Parameter list: Ud
Setup Key Functions by Key
Major parameters (listed on keypad) are accessed by pressing
R and desired parameter key or by pressing
R, U ,
and desired parameter key. For example, to access the interval
parameters, press
RM.
Lock Parameters
•
Access Lock Parameter:
R
U
L P
• Personal password: m, enter 1-8 characters, e
• Lock Options: parameters 28-34
•
Unlock system:
U
Lm
enter password, e
SLM Key Options
Current SLM, Min, Max, Pk, UW
, Leq, SEL;
Alm
T
ime,
T
emp, and serial communications are available by pressing
Cdu
Setup 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
↑↓←→
+789
-456
tfihS
12 3
lecnaC
0 .
retnE
%*
↵
↵
ABCD
EFGH
tfihS
IJK
lecnaC
LM
retnE
;=
raelC
ecapS
NOP Q
RSTU
tfihS
VWX
lecnaC
YZ
retnE
&@$
\
!?<>
^/()
tfihS
`":
lecnaC
#,
retnE
Alpha-Numeric Keyboard Layout
Standard Keyboard.
Press
U once to
access these characters.
Press U twice to
access these charac
-
ters.
Press U three
times to access these
characters.
Take a Measurement
• Turn on: O
• Start the measurement: CS
• Stop the measurement: S
• Turn off: UO
Reset Stored Data
•
Reset stored data: USe
Calibration
• Reset 820: Press US “Reset all Data?” e
• Check polarization: Rm43e
• mr to [200] ec
• Enter calibration level: Rm35e
• m, enter SPL value of calibrator, i.e. [114] e
• To change calibrator serial number:
cRm36em
UUl
•
Enter serial number: [
2792] e
• Seat microphone fully in calibrator cavity
• To calibrate:
c. Activate calibrator
• Press
UC and choose d
• If level not stable 820 will exit calibration
Timer Settings (RT = Run Time)
(ST = Stop Time)
Access the
Timer Parameters:
•
RUt
Select option: m [Repeated r presses cycles through
options]
e
• [Block] = RT1 on Run Date to ST1 on Stop Date
• [1/Day] = R
T1 to ST1 each day from Run Date to Stop Date
• [2/Day] - R
T1 to ST1 and RT2 to ST2 each day from Run
Date to Stop Date
• Timer Run Date: dm, enter date e.g.062598
e
• Timer Stop Date: enter date e.g. 062698 e
• Run Time 1: dm, enter Start Time, e
• Stop Time 1: dm, enter Stop Time, e
• Run Time 2: dm, enter Start time 2, e
• Stop
Time 2:
dm, enter Stop time 2, e
Memory Check
• Press U M
Battery Check
•
Press UB
displays % of battery remaining [repeated
presses of
U B displays firmware revision number
and error messages]
Printing Report
Connect 820 to serial printer with CBL033:
• Set 820 parameters to match printer (baud rate, serial
address, and handshaking)
To set printing options:
• ss = Setup options
•
sS=
All Disabled. Press S
•
s7 =
Tailored Form
•
s8 = Short Form
•
s9 = Long Form
T
o print reports:
• sR = Setup List
•
sS = Print Last
•
sB = Histograms
•
sUH = Run Log
•
sH = History Report
•
sM = Interval History Report
Setup Parameter
Number Key
System 1-20 RUS
Timer 21-27 RUt
Lock 28-34 RUL
Cal
35-38
R
UC
SLM
39-50
RC
DOSE 51-54 RE
Ln Stat Levels 55-60 RB
EXCD Levels 61-65 RV
INTV
HIST 72-79
RM
TIME History 80-87 RH
Tailored Report 89-113 Rs
Add’l Functions 152-159 Rm152e
EXCD/PassBy
161-163
Rm161e
Real-time Reports
168-173
Rm168e
Print Options 177-201 Rm177e
Screen Symbols
•
SsSs = (flashing) upper right hand side. Model 820 is stabilizing (approximately 45 sec)
•
= Stop mode. No data is being taken (upper right hand
corner of display)
• = Run Mode (upper right hand corner of display)
• O = (or V, L, D) Overload. These letters in succession
replace the figure each 8 seconds when Overload occurs
anytime during measurement
• f = (flashing) Function keys are used for different purpose
in the current function
• n = (flashing) Numeric key input mode is active
•
S,2,3 =
U key (multiple presses allow access to dif
-
ferent areas of the alpha-numeric keypad)
Quick User Guide
Model 820
Sound Level Meter
820 User Manual Cross-Reference
Function
User Manual Page
Alpha Characters . . . . . . . . . . . . . . . . . . . .4-3
Battery Check . . . . . . . . . . . . . . . . .2-10, 5-13
Calibration . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . .C
History Functions . . . . . . . . . . . . . . . . . . . .7-1
Keypad and Key functions . . . . . . . . . . . . .2-1
Lock Parameters . . . . . . . . . . . . . . . . . . . . .6-5
Memory Check . . . . . . . . . . . . . . . . .5-14,9-1
Parameters . . . . . . . . . . . . . . . . . . . . . . . . ..8-1
Printing a Report . . . . . . . . . . . . . . . . . . .10-1
Reset Stored Data . . . . . . . . . . . . . . . . . . . .8-1
Screen Symbols . . . . . . . . . . . . . . . . . . . . .2-8
Storage Registers . . . . . . . . . . . . . . . . . . . .8-4
Take a Measurement . . . . . . . . . . . . . . . . .5-1
Timer Settings . . . . . . . . . . . . . . . . . . . . . .6-1
Larson•Davis
1681 West 820 North • Provo, UT 84601
Ph. (801) 375-0177 • Fax: (801) 375-0182
http://www
.lardav
.com
I820.05
0798
Take a Measurement
• Turn on: O
• Start the measurement: CS
•
Stop the measurement:
S
• Turn off: UO
Reset Stored Data
• Reset stored data: USe
Calibration
• Reset 820: Press US “Reset all Data?” e
• Check polarization: Rm43e
• mr to [200] ec
• Enter calibration level: Rm35e
• m, enter SPL
value of calibrator
, i.e. [
114] e
•
To change calibrator serial number:
cRm36emUUl
•
Enter serial number: [
2792] e
• Seat microphone fully in calibrator cavity
• To calibrate:
c. Activate calibrator
• Press
UC and choose d
• If level not stable 820 will exit calibration
Timer Settings (RT = Run Time)
(ST = Stop Time)
Access the Timer Parameters:
•
RUt
Select option: m [Repeated r presses cycles through
options]
e
• [Block] = RT1 on Run Date to ST1 on Stop Date
• [1/Day] = R
T1 to ST1 each day from Run Date to Stop Date
• [2/Day] - RT1 to ST1 and RT2 to ST2 each day from Run
Date to Stop Date
• Timer Run Date:
dm, enter date e.g.062598
e
• Timer Stop Date: enter date e.g. 062698 e
• Run
T
ime 1:
dm, enter Start
T
ime,
e
• Stop Time 1: dm, enter Stop Time, e
• Run Time 2: dm, enter Start time 2, e
• Stop Time 2: dm, enter Stop time 2, e
Memory Check
• Press U M
Battery Check
• Press U B displays % of battery remaining [repeated
presses of
U B displays firmware revision number
and error messages]
Printing Report
Connect 820 to serial printer with CBL033:
• Set 820 parameters to match printer (baud rate, serial
address, and handshaking)
To set printing options:
• ss = Setup options
•
sS= All Disabled. Press S
•
s7 = Tailored Form
•
s8 = Short Form
•
s9 = Long Form
To print reports:
• sR = Setup List
•
sS = Print Last
•
sB = Histograms
•
sUH = Run Log
•
sH = History Report
•
sM = Interval History Report
Setup Parameter Number Key
System
1-20
R
U
S
Timer 21-27 RUt
Lock 28-34 RUL
Cal
35-38
R
UC
SLM
39-50
RC
DOSE
51-54
RE
Ln Stat Levels 55-60 RB
EXCD Levels
61-65
RV
INTV HIST 72-79 RM
TIME History 80-87 RH
T
ailored Report 89-113
Rs
Add’l Functions
152-159
Rm152e
EXCD/PassBy 161-163 Rm161e
Real-time Reports 168-173 Rm168e
Print Options 177-201 Rm177e
Screen Symbols
• SsSs = (flashing) upper right hand side. Model 820 is stabilizing (approximately 45 sec)
• = Stop mode. No data is being taken (upper right hand
corner of display)
• = Run Mode (upper right hand corner of display)
•
O = (or
V
, L, D) Overload.
These letters in succession
replace the figure each 8 seconds when Overload occurs
anytime during measurement
• f = (flashing) Function keys are used for different purpose
in the current function
• n = (flashing) Numeric key input mode is active
•
S,2,3 =
U key (multiple presses allow access to dif
-
ferent areas of the alpha-numeric keypad)
Quick User Guide
Model 820
Sound Level Meter
820 User Manual Cross-Reference
Function User Manual Page
Alpha Characters . . . . . . . . . . . . . . . . . . . .4-3
Battery Check . . . . . . . . . . . . . . . . .2-10, 5-13
Calibration . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . .C
History Functions . . . . . . . . . . . . . . . . . . . .7-1
Keypad and Key functions . . . . . . . . . . . . .2-1
Lock Parameters . . . . . . . . . . . . . . . . . . . . .6-5
Memory Check . . . . . . . . . . . . . . . . .5-14,9-1
Parameters . . . . . . . . . . . . . . . . . . . . . . . . ..8-1
Printing a Report . . . . . . . . . . . . . . . . . . .10-1
Reset Stored Data . . . . . . . . . . . . . . . . . . . .8-1
Screen Symbols . . . . . . . . . . . . . . . . . . . . .2-8
Storage Registers . . . . . . . . . . . . . . . . . . . .8-4
Take a Measurement . . . . . . . . . . . . . . . . .5-1
Timer Settings . . . . . . . . . . . . . . . . . . . . . .6-1
Larson•Davis
1681 West 820 North • Provo, UT 84601
Ph. (801) 375-0177 • Fax: (801) 375-0182
http://www
.lardav.com
I820.05
0798
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