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GQ EMF Communication Protocol
Note: The updated protocol GQ-RFC1701 document can be found from GQ Electronics website download
page.
Serial Port configuration
Baud: 115200
Data bit: 8
Parity: None
Stop bit: 1
Control: None
Command format
A valid command start with ASCII '<‘ and ended with ASCII '>>'. Both command and parameters are in
between '<' and '>>'.
Command is a ASCII string. All parameters of command are true value in hexadecimal.
Direction: All commands are initiated from computer (HOST).
Firmware supported: GQ-EMF380, GQ-EMF360+, GQ-EMF360 (except some other commands that EMF360
can't support)
Commands
1. Get hardware model and version
Command: <GETVER>>
Return: total 18 bytes ASCII chars from GQ EMF unit. It includes 9 bytes hardware model and 7 bytes
firmware version.
e.g.: GQ-EMF380Re 1.00\r\n
2. Key Commands that simulates a key press from the unit
Commands: <KEY0>> (back key) Represents Key S0 from the unit
<KEY1>> (down key) Represents Key S0 from the unit
<KEY2>> (up key) Represents Key S0 from the unit
<KEY3>> (select/power key) Represents Key S0 from the unit Return: none
3. To simulate a KeyHold (for zooming and power) just like pressing and holding a key from the unit
Commands: <KEYHOLD0>> (back key) nothing special same as <KEY0>>
<KEYHOLD1>> (down key) change RF band or Zoom out on RF Graphs
<KEYHOLD2>> (up key) zoom in on RF Graphs
<KEYHOLD3>> (select/power key) Turn unit on or off
4. Get an EMF reading
Command: <GETEMF>>
Return: Gets the current max EMF reading from X,Y,Z,and high frequency EMF sensors in ascii 9 bytes
e.g. : EMF = 3.5
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