:TIMebase:FIND:SEQuence

Instrument:
N1010A
DCA-X
DCA-M
Meas. mode:
Scope
Eye
Jitter
TDR
Flex Apps:
FlexDCA
FlexRT
:TIMebase Find Commands

Example Script

Click here to learn about a Python script for finding a symbol sequence.

Command Syntax

:TIMebase:FIND:SEQuence "bit sequence"

"bit sequence" is a string of binary digits "0" and "1".

Query Syntax

:TIMebase:FIND:SEQuence?

Description

WILDCARD

The question mark (?) can be used as a wildcard character. Each instance of the "?" character in the find string represents either a one or a zero symbol. For example, the find string 11?1 will locate instances of 1101 and 1111 in the pattern.

In Oscilloscope and Eye/Mask mode, defines a specific sequence of symbols to search for within an acquired waveform pattern. The entered symbol sequence is a string of binary "0" and "1" characters. A maximum of 128 characters is allowed. For example, you may need to observe how your device under test responds to a 1110 symbol sequence. After entering the symbol sequence, use the :TIMebase:FIND:SIGNal command to select the pattern waveform on which to perform the search. Use the :TIMebase:FIND:NEXT command to initiate the search. Each use ot the NEXT command locates the next location in the pattern that matches the sequence. The time scale is automatically adjusted to zoom in on the symbol sequence. To query the symbol offset of a located symbol sequence within the pattern, use the :TIMebase:BPOSition query. The location of the sequence within the pattern is also shown in the Pattern Navigation Display that is located at the top of the FlexDCA's display.

To use this feature, pattern lock must be turned on (:TRIGger:PLOCk). It is recommended that the entire pattern be acquired (:ACQuire:EPATtern) and that waveform wrapping be turned off (:ACQuire:WRAPping).

Requires FlexDCA revision A.01.80 and above.

The Find Bit Sequence feature is available in Oscilloscope and Eye/Mask modes only.

Example

:TIMebase:FIND:SEQuence "1110"