:READ? [<numeric>]
When the instrument is configured to use an internal, manual or external trigger source (that is, after you have issued the :TRIG:SOUR command by specifying “INT”, “MAN” or “EXT”), issuing this command without the parameter sets the trigger system into trigger wait state. Then this command returns the measurement data when the instrument is triggered and has completed the measurement cycle.
When the instrument is configured to use an internal, manual or external trigger source, issuing this command with the parameter sets the active table to the number specified by the parameter. Then the E4982A is operated as described above. In other words, issuing this command with the parameter causes the same operation as when the :SOUR:LIST:TABL command is issued, and then the :READ? command is issued without the parameter.
When the instrument is configured to use the GPIB/LAN trigger source (that is, after you have issued the :TRIG:SOUR command by specifying “BUS”), this command fails and an error is generated. This is because issuing the command would prevent the instrument from being triggered.
When the instrument is configured to use a manual or external trigger source, it does not accept any additional command until it is triggered from the external source. To exit from this state without triggering the instrument from the external source, you must send the Device Clear command to abort query processing.
|
Parameter |
Value |
|
Description |
Table number |
|
Data type |
Integer |
|
Range |
1 to 8 |
|
Preset value |
1 |
|
Resolution |
1 |
If your specified parameter is beyond the valid range, the command fails and an error is generated.
Same as the :FETC? command.
No equivalent key is available on the front panel.