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192 L4400 User’s Guide
8 L4450A 64-Bit Digital I/O with Memory and Counter
L4450A SCPI Command Summary
Table 8-1 lists the instrument-specific SCPI commands that apply to the
L4450A 64- Bit Digital I/O and Counter instrument. Table 3- 3 (Chapter 3) lists
the SCPI commands that apply to all L4400 series instruments.
For complete information on all SCPI commands, refer to the Programmer’s
Reference contained on the L4400 Product Reference CD- ROM (p/n
34989- 13601).
Table 8-1. L4450A SCPI Command Summary.
Subsystem
Commands
CONFigure
(Counter /
Totali zer)
(Digital I/O)
CONFigure:COUNter:DCYCle [{<gate_time>|MIN|MAX|DEF},] (@<ch_list>)
CONFigure:COUNter:FREQuency [{<gate_time>|MIN|MAX|DEF},]
(@<ch_list>)
CONFigure:COUNter:PERiod [{<gate_time>|MIN|MAX|DEF},] (@<ch_list>)
CONFigure:COUNter:PWIDth [{<gate_time>|MIN|MAX|DEF},]
(@<ch_list>)
CONFigure:COUNter:TOTalize [{READ|RRESet},] (@<ch_list>)
CONFigure:TOTalize [{READ|RRESet},] (@<ch_list>)
CONFigure:DIGital {BYTE|1|WORD|2|LWORd|4}, [<voltage>,] [{NOR-
Mal|INVerted},] (@<ch_list>)
CONFigure:DIGital:DIRection {INPut|0|OUTPut|1}, (@<ch_list>)
CONFigure:DIGital:DIRection? (@<ch_list>)
CONFigure:DIGital:HANDshake SYNChronous, [<thresh_voltage>,
[<level_voltage>, [<polarity>,]]] (@<ch_list>)
CONFigure:DIGital:HANDshake:CTIMe {<seconds>|MIN|MAX|DEF},
(@<ch_list>)
CONFigure:DIGital:HANDshake:CTIMe? [{MIN|MAX},] (@<ch_list>)
CONFigure:DIGital:HANDshake:DRIVe {ACTive|OCOLlector}, (@<ch_list>)
CONFigure:DIGital:HANDshake:DRIVe? (@<ch_list>)
CONFigure:DIGital:HANDshake:POLarity {NORMal|INVerted},
[{H0|0|H1|1|H2|2|ALL},] (@<ch_list>)
CONFigure:DIGital:HANDshake:POLarity? {H0|0|H1|1|H2|2}, (@<ch_list>)
CONFigure:DIGital:HANDshake:RATE {<frequency>|MIN|MAX|DEF},
(@<ch_list>)
CONFigure:DIGital:HANDshake:RATE? [{MIN|MAX},] (@<ch_list>)
CONFigure:DIGital:HANDshake:STATe {HIMPedance|OFF|ON},
(@<ch_list>)
CONFigure:DIGital:HANDshake:STATe? (@<ch_list>)
CONFigure:DIGital:HANDshake:SYNChronous:STRobe[:SOURce]
{INTernal|EXTernal}, (@<ch_list>)