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3
TABLE 3-3 SCPI COMMANDS AND QUERIES
(CONTINUED)
Keyword
Default
Description
Value
:PORTn
-
Writes the attached value to byte n. Value of
n is 1 to 6. Value of parameter is 0 to 255.
Bits set to the logic true polarity set by the
last SOUR:DATA:PORTn:POL command.
May be queried to read back last output
value.
:POLarity
255
Sets logic true polarity for ROUTe and
SOURce branches. Bits may be set inde-
pendently. Value is 0 to 255. May be
queried to read current polarity.
:STRobe
Pulses the Data Strobe without having re-
ceived string data. Use to transfer SOURce
data to the external device.
STATus
-
Starts Status Reporting Structure
:OPERational
-
Identifies Operational registers.
:QUEStionable
-
Identifies Questionable registers.
[:EVENt?]
Returns contents of the event register
associated with the command.
:CONDition?
Returns contents of the condition register
associated with the command.
:ENABle
0
Sets the enable mask which allows the true
conditions in the associated event register to
be reported in the summary bit.
:PTRansition
255
Sets positive transition enable register. Value
= 0 to 255.
:NTRansition
0
Sets the negative Transition register. Val-
ues - 0 to 255.
:PREset
Sets the selected Enable Register, PTR and
NTR registers to their default values (0, 255
and 0 respectively) so the 4863 detects a
positive changes
