HP VXI manual Idn?, Lmc?, Lrn?

Example *ESR?	Sends Standard Event Status Register
	query.

*GMC? <name_string>

Get Macro Query. Returns arbitrary block response data which contains the command or command sequence defined by name_string. The command sequence will be prefixed with characters which indicate the number of characters that follow the prefix.

Example *GMC? ‘LIST’	Ask for definition of macro from *DMC
	example.

If the prefix returned consisted of "#214", the 2 says to expect two character-counting digits. The 14 says that 14 characters of data follow. Had the returned macro been shorter, such as #15*EMC?, we would read this as 1 counting digit indicating 5 data characters.

*IDN?

Identity. Returns the device identity. The response consists of the following four fields (fields are separated by commas):

•Manufacturer

•Model Number

•Serial Number (returns 0 if not available)

•Firmware Revision (returns 0 if not available)

The *IDN? command returns something similar to the following for the

HP E1411B:

HEWLETT-PACKARD,E1411B,0,B,05.00

Example *IDN? Queries identity.

*LMC?

Learn Macros Query. Returns a quoted string name for each currently defined macro. If more than one macro is defined, the quoted strings are separated by commas (,). If no macro is defined, then a quoted null string ("") is returned.

*LRN?

Learn query command. *LRN? causes the instrument to respond with a string of SCPI commands which define the instrument’s current state. Your application program can enter the *LRN? response data into a string variable, later to be sent back to the instrument to restore that configuration.

Example response from an HP E1326B voltmeter in the power-on state:

30 Command Reference Chapter 3