16 Keysight 34950A User’s Guide
Channel Width and Polarity, Threshold, Level, and Drive
When the width of a channel is set to WORD or LWORd, the channel direction (input
or output) of the channels spanned by the width is controlled by the channel in
operation. That is, all grouped channels are automatically set to the same input or
output operation.
Channel settings of polarity, threshold, level, and drive mode are unchanged when
channels are combined. For example, consider the following command sequence.
CONF:DIG:POL NORM,(@1101)
CONF:DIG:POL INV,(@1102)
CONF:DIG:WIDT WORD,(@1101)
This command sequence set the first 8 bits (channel 101) to normal polarity for
input and output operations, set the next 8 bits (channel 102) to inverted polarity,
and then combines the bits into a 16-bit channel. When this WORD channel is
used, the first eight bits will input or output using normal polarity but the next 8
bits will read or written using inverted polarity.
Threshold, level, and drive settings all behave in the same manner as the polarity
setting described above.
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