BNC 1105 Universal Counter - Manual (Page 159)

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This command does not clear saved settings or any data memories.
This command will clear any displayed error messages.
*DDT<arbitrary block>
This is a Define Device Trigger command. It sets or queries the command that
the device will execute when it receives the IEEE 488.1 Group Execute Trigger
(GET) interface message or a *TRG common command.
The counter takes only the commands :INITitate[:IMMediate], :READ?
and :FETCh? or otherwise error -224 will be generated. When the parameter is
a zero-length <arbitrary block>, the counter does not do anything when it
receives a GET or a *TRG command.
Return
#14INIT, #15FETC?, #15READ? Or #0 terminated with a new line and EOI.
Notes
It will be set back to #14INIT after the counter has been turned off or after
a remoter interface reset.
When defining the device trigger to :FETCh? Or :READ?, note that these
definitions do not allow the specification of a particular function. This lack of
a function specification results in each *DDT using the function specified and
used by the last command :CONFigure, :FETCh, :READ, or :MEASure, if
possible.
*ESE<NRf>
Sets the Standard Event Status Enable Register. The parameter’s range is from
0 to 255 and the resolution is 1. The parameter represents the bit values of the
Standard Event Status Enable Register when it is rounded to an integer value
and expressed in base 2(binary). The value of unused bits is zero when queried
and ignored when set.
Notes
The Standard Event Status Enable Register is cleared and set to “0” after the
counter has been turned off.
This value is unaffected by save/recall and *RST.
*ESE?