Chapter 4 Remote Interface Reference
Output Setting and Operation Commands
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4
Output Setting and Operation Commands
This section describes low-level commands used to program the power supply.
Although the APPLy command provides the most straightforward method to program
the power supply, the low-level output setting commands give you more flexibility
to change the individual parameters.
CURRent{<current>| MINimum | MAXimum | UP | DOWN}
Program the immediate current level of the power supply. The immediate level is the
current value of the output terminals.
The CURRent command changes the output of the power supply to the newly
programmed value regardless of the output range presently selected.
You can substitute ‘‘MINimum’’ or ‘‘MAXimum’’ in place of a specific value for the
current parameter. MIN selects the lowest current values of ‘‘0’’ amps. MAX selects
the highest current values allowed for the selected range.
This command also increases or decreases the immediate current level using the ‘‘UP’’
or ‘‘DOWN’’ parameter by a predetermined amount. The command CURRent:STEP
sets the amount of increase or decrease. Notice that a new increment setting will cause
an execution error -222 (Data out of range) when the maximum or the minimum rated
current is exceeded.
CURRent? [MINimum | MAXimum]
Return the presently programmed current level of the power supply.
CURR? MAX and CURR? MIN return the highest and lowest programmable current
levels for the selected range.
CURRent:STEP {<numeric value>| DEFault}
Set the step size for current programming with the CURRent UP and CURRent DOWN
commands. See the example in the next page.
To set the step size to the minimum resolution, set the step size to ‘‘DEFault’’. The
minimum resolution of the step size is approximately 0.052 mA (E3646A), 0.014 mA
(E3647A), 0.095 mA (E3648A), and 0.027 mA (E3649A), respectively.
The CURR:STEP? DEF returns the minimum resolution of your instrument. The
immediate current level increases or decreases by the value of the step size. For
example, the output current will increase or decrease 10 mA if the step size is 0.01.
At *RST, the step size is the value of the minimum resolution.
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