NF FRA5022, Instruction Manual

Page: 93 / 145

5.5 Command Explanation
FRA5022
5-15
*STB?
Description: Queries the status byte register contents.
Parameters: None
Response: Register contents, format
<
NR1
>
, range 0 to 255
Details
・・・

“5.6.2 Status Byte”
Query example:
*
STB?
Response example: 128
*TST?
Description: Queries the self diagnosis results.
Parameters: None
Response: In
FRA5022
, “0” is always returned format
<
NR1
>
Query example: TST?
Response example: 0
*WAI
Description: Waits until all the overlapped commands have been processed
before executing later commands. Refer to the explanations
below.
Parameters: None
Example:
*
WAI
■
Overlapped commands and sequential commands
An overlapped commands is a command that allows for succeeding commands to be
executed while it is being executed.
A sequential command is a command that does not allows for succeeding commands to
be executed while it is being executed.
The following commands are overlapped commands. Commands not listed below are
sequential commands.
[:SOURce:]SWEep:MEASure
If you don't want to execute an order until an overlapped commands is executed, use
the
*
WAI command, the
*
OPC command or the
*
OPC? command.
Ex.) overlapped command 1; overlapped command 2;
*
WAI; sequential command
<
PMT
>
Here: PMT is Program Message Terminator
The waiting caused by the
*
WAI can be canceled with device clear.
Do not use *WAI for repeat measurement. If a spot measurement command is sent
with repeat setting, the command will be executed during repeat measurement.
Therefore, if the subsequent commands are kept waiting by *WAI, they will be waiting
forever and not be executed.