147
WAVE File Format
CommonChSetting (each CH) chunk
Stores setting information of the unit, including each channel (for four chan-
nels) settings etc.
Table 6
CommonChSetting (each CH) chunk
Type
Variable name
Size
(Byte)
Description
Value
Reserved
40
int16
Chx Number
2
Channel number
1 to 4
int16
Chx Enabled
2
Channel input enable
0: false
1: true
Reserved
2
int16
Chx Sensor
Type
2
Sensor type
0: V
1: EU
2: MIC
3: PIC
4: SLM
5: VM
int16
Chx Sensor
Input Range
2
Input voltage range
(V
peak
)
102: 0.01 V (-40 dB)
103: 0.03 V (-30 dB)
104: 0.1 V (-20 dB)
105: 0.3 V (-10 dB)
106: 1 V (0 dB)
107: 3 V (10 dB)
108: 10 V (20 dB)
int16
Chx Coupling
2
Input coupling
0: AC
1: DC
int16
Chx CCLD
2
CCLD setting
0: false
1: true
int16
Chx Inversion
2
Input inversion
0: false
1: true
int16
Chx HPF Cut-
off Frequency
2
High-pass digital fi lter
cutoff frequency
0: OFF
1: 0.02 Hz
8: 5 Hz
int16
Chx LPF Cut-
off Frequency
2
Low-pass digital filter
cutoff frequency
0: OFF
4: 200 Hz
8: 1 kHz
12: 2 kHz
char[8]
Chx Measure-
ment Unit
8
Unit
V
EU
dB
m/s2
double
Chx ValuePer-
Bit
8
Calibration value (phys-
ical quantity per 1 bit)
Setting value on
calibration
double
Chx ValuePer-
Volt
8
Calibration value (sen-
sitivity)
Setting value on
calibration
Summary of Contents for DA-21
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