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Keysight E1458A 96-Channel Digital I/O Module User Guide 79[SOURce:] Subsystem Keysight E1458A Command Reference[SOURce:]DIGital:CONTroln:POLarity[SOURce:]DIGital:CONTroln:POLarity sets the CTL line voltage level forlogical true in port n to either TTL High for POSitive polarity or TTL Low forNEGative polarity.ParametersComments– Control lines are always accessed by their 8-bit port number– :CONTroln is the keyword used for commands relating to the control (CTL)line at port n. The port number n must be the last character of the keywordwithout spaces.– If n is omitted, port 0 is used.– The control line is used with the flag line to handshake data to and fromperipherals.– Related Commands: [SOURce:]DIGital:CONTroln:POLarity?[SOURce:]DIGital:CONTroln[:VALue] [SOURce:]DIGital:FLAGn:POLarity[SOURce:]DIGital:FLAGn:POLarity?– *RST Condition: POLarity = POSitiveExampleDIG:CONT0:POL POS sets logical true to TTL High on port 0 control line.[SOURce:]DIGital:CONTroln:POLarity?[SOURce:]DIGital:CONTroln:POLarity? returns a three-character string, either POSor NEG, indicating the logical true condition of the control (CTL) line at port n.ParametersParameterNameParameterTypeRange of Values DefaultCONTroln Numeric none, 0 through 11 0 Discrete POSitive or NEGative NoneParameter Name Parameter Type Range of Values DefaultCONTroln Numeric none, 0 through 11 0
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