3-20 Measurements and Sourcing Voltage Model 6487 Reference Manual
D) STATe <b>
This command turns the voltage source output on or off. However, the voltage source out-
put cannot be turned on if the interlock is asserted. When the voltage source is turned off,
the source will be a low-impedance 0V source (limited to approximately 1mA) and will
discharge small capacitances (DUT, cables, etc.).
E) INTerlock <b>
These commands control the interlock for the 10V range and query whether or not the
interlock is asserted. Note that for the 50 and 500V ranges, this setting is ignored since the
interlock is directly tied to the hardware and cannot be bypassed. Therefore, this command
has no effect when the source is on any range other than the 10V range. Attempting to turn
off the interlock state while on the 50 or 500V ranges will generate a -221 “Settings Con-
flict” error. Upranging from the 10V range will always cause the interlock to be enabled.
When you range back down to the 10V range, the interlock state will be reset to what it
was when you left the 10V range. See Section 2 for more interlock information.
t^okfkd When the interlock is asserted, the voltage source will change to a
high-impedance state. This situation could leave any connected device
charged to the last programmed voltage.
Programming example — voltage
The following command sequence will output 5V on the 10V range with a 2.5mA limit:
*RST ' Return 6487 to GPIB defaults.
SOUR:VOLT:RANG 10 ' Select 10V source range.
SOUR:VOLT 5 ' Set voltage source output to 5.
SOUR:VOLT:ILIM 2.5e-3 ' Set current limit to 2.5mA.
SOUR:VOLT:STAT ON ' Put voltage source in operate.
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