KLP 073008
B-7
FIGURE B-2. USING LIST COMMANDS AND QUERIES
B.30 MEASure:VOLTage[:SCALar][:DC]? QUERY
MEAS:VOLT?
Syntax:
Short Form: MEAS[:SCAL]:VOLT[:DC]?
Long Form: MEASure[:SCALar]:VOLTage[:DC]?
Description:
Measures actual voltage.
This query returns the actual value of output voltage (measured at the out-
put terminals) as determined by the programmed value of voltage and current and load conditions.
(See example, Figure B-1.) NOTE: The SCPI convention for this command allows the controller to
establish the range and accuracy of the measurement if nn,nn is added after the question mark; the
KLP accepts this format but sets the command warning bit (13) in the status questionable register and
ignores the extra characters.
NOTE: The following example assumes KLP 75-33-1200 with virtual model set for 36V, 33.33A and out-
put operating in voltage stabilization mode. See Figure B-3 for directions on programming virtual
model limits.
LIST:CLE
Clears main channel (LIST:CURR or LIST:VOLT) and LIST:DWEL
data tables and initializes the LIST processor to add entries.
LIST:DWEL 2
Sets the time duration for Location 0 to be 2 seconds. NOTE: If spe-
cific dwell times are not entered for the rest of the locations in the list
before running the list, this dwell time will be assigned to all entries.
LIST:VOLT 28,32,18
Starting at Location 0, fills the first three locations with the voltages
shown.
LIST:VOLT:POIN?
Returns 3, indicating that 3 data points have been entered; also indi-
cates that the next data location to be filled is Location 3.
LIST:QUER?
Returns 0 indicating list starting point (default location set by
LIST:CLE).
LIST:VOLT?
Returns 2.8E1,3.2E1,1.8E1 (the contents of the filled locations).
LIST:VOLT 20,22,24,26,28
Adds five points to the list (Locations 3 through 7). The list now has
eight points.
LIST:VOLT:POIN?
Returns 8.
LIST:QUER 3
Starts LIST queries from Location 3.
LIST:COUN
10
Specifies that upon receipt of VOLT:MODE LIST, the above
sequence will be executed 10 times.
LIST:COUN:SKIP 2
Specifies that the first two steps of the sequence will only be exe-
cuted during the first cycle through the list; thereafter, the list shall
execute Locations 2 through 7 an additional 9 times.
LIST:CURR 3
Programs output current to 3A for all locations. NOTE All active loca-
tions must have complete sets of data entered, or list will not run.
LIST: CONT 0
Programs relay control to de-energized state. NOTE: This command
is necessary only if the relay control is set to LIST (see PAR.
3.2.11.3).
OUTP ON
Enables output.
VOLT 24;CURR 3
Initializes output voltage to 24V, output current to 3A.
VOLT:MODE LIST
Executes the list. For the first cycle the voltage will step to 28V and
32V in 2-second dwell increments, then begin a cycle of steps from
18V to 28V in 2V steps and 2-second dwell increments repeated ten
times, at the end of which time the output will remain constant at
28V and 3A.
VOLT:MODE FIX
Halts execution of the list and maintains the outputs at their immedi-
ate settings.
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