Datasheet

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