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Model 6220/6221 Reference Manual Limit Test and Digital I/O 9-9

Return to Section 9 topics

For example, send these commands to force a digital I/O pattern of 0101 (5) by

remote:

SCPI commands — force digital I/O pattern

Digital I/O commands are listed in Table 9-3. Additional information for each com-

mand is provided in notes that follow the tables.

1. CALC3:FORC:STAT <b> ‘ Enable/disable I/O pattern force state

If true, then ignore all limit results from the limit commands (page 9-3) and

take the CALC3:FORC:PATT value described below and force it on the digital

output lines. When turned on with the FORCe:STATe, the FORCe:PATTern

supersedes any results from the compliance limit described in “Limit test,” on

page 9-2.

2. CALC3:FORC:PATT <NRf> ‘ Set I/O pattern

Pattern to be forced on the digital output connector. Note that the actual digital

output value assumes active high logic which cannot be changed, so sending

12 (binary 1100) will result in bits 0 and 1 low and bits 2 and 3 high. Digital I/O

port values are shown in Table 9-4.

CALC3:FORC:STAT ON ‘ Enable I/O pattern force.

CALC3:FORC:PATT 5 ‘ Set I/O to 5 (0101)

Table 9-3

Digital I/O commands

Command* Description Default

CALCulate3:FORCe:STATe <b> Enable/disable I/O pattern force state.

<b> = 1 or 0.

CALCulate3:FORCe:PATTern <NRf> Set I/O pattern.

<NRf> = 0 to 15

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Keithley 6220 User Manual

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