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*RST | Reset Command. Sets the instrument functions to the factory default power up | |
| state. |
|
*TST? | Self Test Query. Returns a '0' when the VXI interface and processor are operating. | |
*OPC | Operation Complete Command. Sets the Operation Complete bit in the Standard | |
| Event Status Register when execution of the preceding operation is complete. | |
*OPC? | Operation Complete Query. | Returns a '1' when the preceding operation has been |
| completed. |
|
*WAI | Wait to Continue Command. | Inhibits execution of an overlapped command until |
| the execution of the preceding operation has been completed. | |
*TRG | Trigger Command. Equivalent to Group Execute Trigger. | |
*STB? | Read Status Byte Query. Returns the value of the Status Byte as an nr1 number (0- | |
| 255). |
|
*SRE <nrf> | Service Request Enable Command. Sets the Service Request Enable Register. | |
*SRE? | Service Request Enable Query. Returns the value of the Service Request Enable | |
| Register as nr1. |
|
*ESR? | Standard Event Status Register Query. Returns the value of the Status Event Status | |
| Register as nr1. |
|
*ESE <nrf> | Standard Event Status Enable Command. Sets the Standard Event Enable Register. | |
*ESE? | Standard Event Status Enable Query. Returns the value of the Standard Event | |
| Status Enable Register as nr1. |
|
*CLS | Clear Status Command. Clears all the Status Event registers and clears the Error | |
| Queue. Does not affect the Enable Registers. |
The IEEE 488.2 Device Clear function only affects the remote functions. The input and output buffers are cleared and the instrument put into a state to accept new messages. Earlier versions of IEEE 488.1 put the instrument functions into a defined state, but this is now performed by the *RST common command.
Device dependent commands
The following list describes the features of the device dependent mnemonics for the instrument together with simple examples of their use within each major section (Carrier frequency, RF level, etc.) The root mnemonic is listed first followed by the lower level mnemonics. Each group is followed by a list of requirements for data type and suffix.
In addition to the normal listen commands the instrument accepts query commands which cause it to prepare a message which will be sent to the controller when the instrument is next addressed to talk. For each query an example of a response is given. Where responses are similar for a group of queries not all are listed. Some queries can produce more than one type of response - an example of each is usually given.
In the list which follows, the abbreviations <char>, <nrf> and <str> have the following meanings:
<char> | = | Character Program Data |
<nrf> | = | Decimal Numeric Program Data |
<str> | = | String Program Data |
Where the data format is Decimal Numeric Program Data, the value may be expressed as a signed or unsigned number in any of the following formats:
nr1: | Decimal integer, e.g. 1234 or |
nr2: | Floating point number, e.g. 1.234 or |
nr3: | Floating point number with exponent, e.g. 1.2345E5 or |