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Description Connection information (output)
Data type Long integer type
STEP 3. Communication
The communication session is conducted in Line 170. VISA's viVPrintf
function sends a program message (GPIB command) to the specified
instrument. The parameters of this function are connection information
(Equip), the program message (*IDN?), and the variable to be formatted
(0 in ctrl_ext.vba).
• To input/output GPIB commands, the viVPrintf function and the
viVScanf function are mainly used, but other VISA functions are
also available. For more information, refer to visa.hlp (online
help for the VISA library).
Syntax
viVPrintf(param1, param2, param3)
Parameters
Parameter (param1)
Description Connection information (input)
Data type Long integer type
Parameter (param2)
Description
Program message (input) When sending a program
message of the GPIB command, a message terminator
is required at the end of the message (Chr$(10) in
ctrl_ext.vba)
Data type Character string type
Parameter (param3)
Description A variable to be formatted. If not applicable, enter 0.
Data type Specified data type
The receiving session is controlled in Line 210. VISA's viVScanf function
receives the result from the specified instrument and stores it in the output
variable. The parameters of this function are connection information (Equip
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