2-8 Basic Power Supply Operation
NOTES The SET key is active in any front panel menu or display mode. If not already in the
output settings mode, the SET key will select it.
The V and I DACs are updated in real time. Therefore, if the output is on, the output
is updated immediately when a value is altered.
After pressing SET to exit the output settings mode, the instrument returns to the
previous display mode or front panel menu.
Operate
The OPERATE key is used to control the output of the power supply. This key toggles the
output between on and off. While in one of the display modes, output ON or OFF is displayed
in the upper right hand corner of the display. The key is active in any front panel menu or display
mode. In menus, the on/off state of operate is not displayed. Note that DVM measurements can
be performed with the output off.
SCPI programming — outputting voltage and current
The commands to output voltage and current are summarized in Table 2-3. The “Outputting
and reading back V and I” programming example at the end of this section demonstrates how to
use these commands.
Table 2-3
SCPI commands — outputting voltage and current
Commands Description Default Ref
SENSe
:CURRent
:RANGe
[:UPPer] <n>
:AUTO <b>
SENSe subsystem:
Current function:
Set current measurement range:
Specify expected current in amps; 0 to 5.
Enable or disable auto range.
5.0
OFF
A
B
[SOURce]
:VOLTage <n>
:CURRent <n>
:TYPe <name>
:STATe?
SOURce subsystem:
Set voltage amplitude in volts; 0 to 15 (1mV resolution).
Set current limit value in amps; 0 to 5 (100µA resolution).
Select current limit type; LIMit, TRIP,
LIMRELAY (LIMITRELAY), or TRIPRELAY. *
Query state of current limit.
0.0
0.25
LIM
C
D
E
F
OUTPut
[:STATe] <b>
OUTPut subsystem:
Turn the power supply output on or off. OFF
* LIMRELAY (LIMITRELAY) and TRIPRELAY available in Models 2303/2303B with firmware revision level A06 and higher.
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