Fluke 5520A Operator's Manual page 219

Returns 12.34% for the value of the square wave duty cycle.
x
EARTH
IEEE-488
(Earth Ground command) Selects whether or not the Calibrator front panel NORMAL
LO terminal is tied to chassis (earth) ground. Once set, the Calibrator retains the earth
setting until power off or reset.
Parameters: OPEN (disconnect front panel LO terminal from chassis ground)
TIED (connect front panel LO terminal to chassis ground)
Example:
EARTH TIED
Load TIED to tie the Calibrator front panel NORMAL LO terminal to earth (the front
panel Z key annunciator is on).
x
EARTH?
IEEE-488
(Earth Ground query) Returns whether or not the Calibrator front panel NORMAL LO
terminal is tied to chassis (earth) ground.
Responses: (character) OPEN (front panel LO terminal disconnected from chassis
(character) TIED (front panel LO terminal connected to chassis ground)
Example: EARTH? returns OPEN
Returns OPEN when EARTH is not tied to the NORMAL LO terminal (the front panel
Z key annunciator is off).
x x
EDIT
IEEE-488
(Edit command) Sets the edit field to the primary, secondary or frequency field.
Parameters: PRI (edit the value in single output functions and the primary output
value in dual output functions)
(edit the secondary value in dual output functions)
SEC
FREQ (edit the frequency value in single ac output functions)
(edit is off, which is the same as using the NEWREF command)
OFF
Example:
EDIT FREQ
Load FREQ into the edit field to edit frequency.
x
EDIT?
IEEE-488
(Edit query) Returns the edit field setting.
Responses: (character) PRI (value in single output functions, and the primary output
value in dual output functions is in edit)
(character) SEC (secondary value in dual output functions is in edit)
(character) FREQ (frequency value in single ac output functions is in edit)
(character) OFF (no value is in edit.)
Example: EDIT? returns OFF
Returns OFF when no value is in edit.
x x
RS-232 Sequential
x x
RS-232 Sequential
ground)
x
RS-232 Sequential
x x
RS-232 Sequential
Remote Commands
x x
Overlapped Coupled
x x
Overlapped
x x
Overlapped Coupled
x x
Overlapped Coupled
6
Commands
Coupled
6-15