Voltcraft SL-451 Sound Level Meter and Data Logger 31.5 Hz – 8 kHz SL-451 Hoja De Datos
Los códigos de productos
SL-451
range
A5H 10H
30
Db-----80
dB
A5H
20H
50 dB-----100 dB
A5H
30H
80 dB-----130 dB
A5H
40H
30 dB-----130dB display AUTO at the same time
Protocol 2 :
In PC interface protocol, the received data should be managed as following:
1. according to received data and measured range, calculating and display the bargraph segements
(bargraph segements are 51)
2. Switchable received data at anytime, when to receive the data, displaying the Max/Min noise,
average value and opposite time, with automatic saving functiuon.
3. Input the data to access or excel table
4. change it to graph
5.
choosing COM jack, bit, start bit and 8 bit transmitting.
6. Transmitting 5AH 0ACH reading DATA LOGGER receiving 0DDH
start
data
analyzing
with saving or not function
The communication protocol from SCM to PC
The command style of PC:
Command and function:
command function
33H Power
off
55H
Send out rec command cancel rec command
11H display
max display min cancel MAX/MIN
77H Display
FAST display SLOW
88H Range
Switch
99H
Send out dBA command send out dBC command
0ACH
DATA LOGGER read function
DATA LOGGER protocol
1. data receiving
BBH
XH XL aa/cc year
month
date
hour
minute
Sec.
Sampling
rate
ACH
data
BBH Start
signal
XH/XL Data
volume
AAH/CCH DBA&DBC
ACH
Start receiving data
DDH Over
symbol