Keithley 2002, User Manual

Page: 348 / 366

HP3458A Emulation Mode
H-10
Description
The
ID?
query allows you to request the instrument's identification string. The multimeter responds
with the string “HP3458A.”
LINE?
Purpose
To request the AC power line frequency.
Format
LINE?
Response
Line frequency in Hz.
Description
The
LINE?
query measures and returns the frequency of the AC power line. The returned value is in
Hz, for example: 60.
MCOUNT?
Purpose
To request the number of readings presently stored in memory.
Format
MCOUNT?
Response
Number of readings
Description
The
MCOUNT?
query requests the total number of readings currently stored in memory. The instru-
ment returns the total number of stored readings in standard numeric form.
MEM
Purpose
To enable/disable reading memory, and to designate the storage mode.
Format
MEM <mode>
Parameter
<mode>
<mode> parameter Numeric equivalent Description
OFF 0 Stops storing readings, stored readings stay
intact
LIFO 1 Clears previous readings, stores new readings
as last in, first out
FIFO 2 Clears previous readings, stores new readings
as first in, last out
CONT 3 Clears previous readings, and selects previous
memory storage mode
Default
FIFO (power-on = OFF)
Query
MEM?
Returns the present memory mode.
Description
The
MEM
command enables or disables reading memory, and it also selects the storage mode. If there
was no previous mode chosen for the CONT mode, FIFO is selected.