5522A
Operators Manual
6-18
EXTGUARD?
Sequential
Overlapped
Coupled
IEEE-488
RS-232
x
x
x
x
x
(External guard query) Returns whether the internal guard shields are connected or
disconnected from earth (chasis) ground.
Response: (character)
ON
(external guard is on, i.e., external)
(character)
OFF
(external guard is off, i.e., internal)
Example:
EXTGUARD?
returns
ON
FAULT?
Sequential
Overlapped
Coupled
IEEE-488
RS-232
x
x
x
x
x
(Fault query) Returns the first error code contained in the Calibrator error queue, then
remove that error from the queue. After obtaining the error code, use the
EXPLAIN?
command to view an explanation. A zero value is returned when the error queue is
empty. To read the entire contents of the error queue, repeat
FAULT?
until the response
is 0. (Only system errors appear in the error queue.)
Response:
<value> of the error code
Example:
FAULT?
returns
539
Returns the first error code in the error queue, number 539. To view an explanation of the
error, enter the command
EXPLAIN? 539
.
FORMAT
Sequential
Overlapped
Coupled
IEEE-488
RS-232
x
x
x
x
x
(Format command)
Use with extreme care.
Restores the contents of the nonvolatile
memory device to factory defaults. The memory holds calibration constants and setup
parameters. You lose all calibration data permanently. The CALIBRATION switch on
the rear panel of the Calibrator must be set in the ENABLE position or an execution error
occurs, except for
FORMAT SETUP
.
Parameter:
ALL
(replaces the whole contents with factory defaults)
CAL
(replaces all cal constants with factory defaults)
SETUP
(replaces setup parameters with factory defaults)
Example:
FORMAT SETUP
Replace the setup parameters with the default setup values (below). (The
FORMAT ALL
command is the same as
FORMAT CAL
and then
FORMAT SETUP
.) The
FORMAT
SETUP
command also clears the
*PUD
string (see the
*PUD
command) and
SRQSTR
is
set to “SRQ: %02x %02x %04x %04x” (see the
SRQSTR
command) and
SPLSTR
is set
to “SPL: %02x %02x %04x %04x” (see the
SPLSTR
command).
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