Keithley 6220, Reference Manual

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Model 6220/6221 Reference Manual DC Current Source Operation 3-17
Return to Section 3 topics
1. To select a fixed source range, specify the current output value that is going to be sourced. The
Model 622x will go to the lowest range that can source that value. For example, If you are going
to source 25mA, let <n> = 25e-3. The 100mA range will be selected.
2. Selecting a fixed source range disables autorange.
3. The output must be off in order change the output response. Sending this command while the
output is on will generate error -220 Execution Error.
4. OUTP OFF turns the output off, but does change the set output level. SOUR:CLE sets the out
put level to zero and then turns the output off.
Programming example
The following programming example shows a typical command sequence to con-
figure and control the DC output:
Table 3-2
DC output commands
Command Description Default
CLEar
Turns output off and sets output level to zero.
CURRent:RANGe <n>
Sets current source range (amps).
1, 2
<n> = -105e-3 to 105e-3
100e-3
CURRent:RANGe:AUTO <b>
Enables or disables source autorange.
<b> = ON or OFF OFF
CURRent <n>
Sets DC current source output level (amps).
<n> = -105e-3 to 105e-3 0.0
CURRent:COMPliance <NRf>
Sets voltage compliance (volts).
<NRf> = 0.1 to 105 10.0
CURRent:FILTer <b>
Enables or disables the output analog filter.
<b> = ON or OFF OFF
OUTPut:RESPonse <name>
Select fast or slow output response speed for 6221.
<name> = FAST or SLOW
3, 4
FAST
OUTPut <b>
Turn output on or off.
<b> = ON or OFF OFF
SourceMeter
Sets output to zero, then turns the output off.
4
CLEar
‘ Turns the output off.
CURRent:RANGe:AUTO ON
‘ Enables autorange.
CURRent 12e-3
‘ Sets output level to +12mA.
CURRent:COMPliance 10
‘ Sets voltage compliance to 10V.
OUTPut ON
‘ Turns the output on.
OUTPut OFF
‘ Turns the output off.
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