BSWA 308 - Page 100

BSWA 308/309 BSWA Technology Co., Ltd
98
second after received this instruction.
Single return: The sound level meter will return the measurements data on time after
received the instruction.
Continuous return: Automatically return the measurements data every second after
received the instruction.
Therefore, the "return manner" parameter in the instruction can be set to 2 and send to the
sound level meter, sound level meter will return the latest measurements data every second.
DMAp1_?: Query the Main Screen Data
Instruction
P1
P2
Explanation
DMA
p1:Return manner
0=Stop return;
1=Single return;
2=Continuous return;
3=Integral end return
Query parameter: ?
ASCII
D
M
A
1
?
Hex
44H
4DH
41H
31H
3FH
Byte
1
1
1
1
1
Return
Return the main screen data
Filter: 0=A, 1=B, 2=C, 3=Z
Detector: 0=Fast, 1=Slow, 2=Imp.
Mode: 0=SPL, 1=PEAK, 2=LEQ, 3=MAX, 4=MIN
Measurement data: The value of the main screen
Overload/under-range indicator: 0=Normal, 1= current overload, 2=current
under-range, 3=overload occurred within the integral period,
4=under-range occurred within the integral period
Example: query the data of the main screen, and return only once
02 01 43 44 4D 41 31 20 3F 03 25 0D 0A
Returns: the current main screen is: A-weighting, Fast, SPL, measurement data 074.3dB,
normal (no overload/under-range)
02 01 41 30 2C 30 2C 30 2C 30 37 34 2E 33 2C 30 03 6F 0D 0A