3-14
Measurements and Sourcing Voltage
Model 6487 Reference Manual
SCPI programming
— ohms measurements
A) [SENSe[1]][:CURRent[:DC]]:OHMS <b>
Use this command to turn the ohms function on or off. When the ohms function is enabled,
the Model 6487 calculates the reading from the measured current and the voltage source
setting: R = V/I. Additional OHMS commands control the alternate voltage ohms mode as
described in
“Alternating voltage ohms mode,” page 3-21
B) SOURce[1]:VOLTage
These commands select the voltage source range, set the source level and current limit,
and turn the source output on and off. Additional voltage source commands control volt-
age sweeps (see
Table 3-6
SCPI commands — basic ohms measurements
Commands*
Description
Default
Ref
Measurements:
[SENSe[1]]
[:CURRent[:DC]]
:OHMS <b>
:RANGe <n>
:AUTO <b>
Sourcing voltage:
SOURce[1]
:VOLTage
[:LEVel]
[:IMMediate]
[:AMPLitude] <NRf>
:RANGe <NRf>
:ILIMit <NRf>
:STATe <b>
READ?
SENSe[1] subsystem:
Enable or disable ohms function.
Select manual current range (-0.021 to 0.021A).
Enable or disable auto current range.
SOURce[1] subsystem:
Voltage source commands:
Set output voltage (-505V to +505V).
Set voltage source range (10, 50, or 500).
Set current limit (25
μ
A, 250
μ
A, 2.5mA, or 25mA).
Turn voltage source output on or off.
Trigger and return reading(s).
OFF
ON
0V
10V
25mA
OFF
A
B
* Zero correct and zero check commands not included. See
.
