B-8
Model 820 Technical Reference Manual
NOTE: An LDL (Logged Data Logic) recalculation can be started
with a _LDLVALID I/O Read Command. When the Model 820 is
RUNNING the Valid condition will remain in effect for 1 second. The
_LDLVALID Read Command provides three responses, LDL Valid,
Calculating, and LDL Invalid.
NOTE: The exceedance Leq, R68, and exceedance time, R69, include
data from qualified events that are stored in the EXCD History. If an
event is discarded because it was shorter than the minimum duration
then it will not be included in these values.
R 67
_H.CNEL
Hourly CNEL
nnn.n dB
R 68
_EXLEQ
Total EXCD Leq
nnn.n dB
R 69
_EXTIM
Total EXCD Time
hhhhh:mm:ss.s
R 70
_BGLEQ
Background Leq
nnn.n dB
R 71-85
_unused
unused variable
R 86
_BATT
Battery Level
nnn%
R 87
_BATTSRC
Battery Source (INT/EXT)
ccc
R 88
_TEMP
Temperature
-nnn.n
R 89
_SERNUM
Serial Number
ccccc
R 90
_REVNUM
Software Rev. & Rev. Date
n.nnn ddmmmyyyy
R 91
_FREEMEM
Free Memory
nnnnnnn
R 92
_RECLOG
Number of RUN/STOP Records
nnnnn
R 93
_RECEXCD
Number of EXCD Records
nnnnn
R 94
_RECINTV
Number of INTV Records
nnnnn
R 95
_RECHIST
Number of HIST Records
nnnnn
R 96
_RECDALY
Number of Daily Records
nnnnn
R 97
_RECCAL
Number of Daily Records
nnnnn
R 98,n
_ERRMSG
Error Message List
cccccccccccccccccccccc(n) is the error
list number, 1-8, 1 being latest error, or
nnn, nnn...nnn if n=0 or omitted then
the 8 error codes are output as number.
R 99
_LOGIC1
Logic Output 1 State
{On/Off} unused
R 100
_LOGIC2
Logic Output 2 State
{On/Off} unused
R 101
_REPORT
Report Number
nnnnn
R 102
_PAGE
Page Number
nnnnn
