:DIFF:SIGNal:TYPE
Command Syntax
:DIFF{1:8}{A|C}:SIGNal:TYPE {UNSPecified | NRZ | PAM4}
Where the required specifier {1:8}{A|C} identifies the differential channel by its module slot and channel letter. For example, the differential waveform of channels 1A and 1B would be identified as :DIFF1A.
The channel specifier will fail if it does not include a slot number. If instead the suffix's channel letter is missing, the command defaults to letter A. As a result, the best practice is to always explicitly specify the channel by including both the module slot number and channel letter.
Query Syntax
:DIFF{1:8}{A|C}:SIGNal:TYPE?
Description
Manually sets a differential channel's signal type when automatic detection is turned off (:SIGNal:TYPE:AUTO). This can be useful if the waveform is too degraded to automatically detect its type. By default, automatic detection is turned on and is performed as part of an autoscale (:SYSTem:AUToscale). Automatic detection can also be manually run using the :SYSTem:STAutodetect command. This has the advantage of detecting the signal type without performing scaling. After automatic signal detection, use the :DIFF:SIGNal:TYPE? query to return the actual signal type that was detected. A waveform can be detected as NRZ formatted data, or PAM4 formatted data. The default signal type is Unspecified. Sending this command with automatic detection turned on results in a settings conflict error.
The PAM4 argument is only available when the N1010100A (L-RND) or N1010200A (L-MFG) package license is installed.
Requires FlexDCA revision A.04.50 and above.
Example Command Sequence
:DIFF2A:SIGNal:TYPE:AUTO OFF :DIFF2A:SIGNal:TYPE PAM4