# :CMODe:EYE:PATTern

:CMODe EYE Commands

- :CMODe EYE Commands
- :CMODe:EYE:BITS
- :CMODe:EYE:CCOunt
- :CMODe:EYE:CURSor
- :CMODe:EYE:CWINdow
- :CMODe:EYE:DISPlay
- :CMODe:EYE:PATTern
- :CMODe:EYE:UIXPosition
- :CMODe:EYE:UIXRange
- :CMODe:EYE:UUNits
- :CMODe:EYE:WINDow:COPY
- :CMODe:EYE:WINDow:LEFT
- :CMODe:EYE:WINDow:METHod
- :CMODe:EYE:WINDow:RIGHt
- :CMODe:EYE:WINDow:TRACking
- :CMODe:EYE:WINDow:WIDTh
- :CMODe:EYE:XPOSition
- :CMODe:EYE:XSCale

## Command Syntax

    :CMODeN:EYE:PATTern <pattern_string>

Where N identifies a specific common-mode waveform in the form "<connection1-8>_<ch1|ch3|ch5|ch7>". With connection 1, the connection number part (that is, "1_") is optional, and you can simply use the channel number "<ch1|ch3|ch5|ch7>". When two channels are paired to create a differential waveform and a common-mode waveform, the odd-numbered channel is used when specifying the waveform. For example, connection 5 common-mode waveform 3 (from the pairing of channels 3 and 4) is `CMODe5_3`.

<pattern_string> is a 16-character string containing symbol values in the pattern.

## Query Syntax

    :CMODeN:EYE:PATTern?

## Description

When qualifying a real-time eye with symbols in a pattern (see `:CMODe:EYE:BITS`), this command specifies the symbol pattern.

- For typical NRZ (non-return-to-zero) signals, the levels are "1", "0", or "X". A valid pattern, for example, could be "1010X110X100X010".
- For PAM-4 (four-level) signals, the levels are "3", "2", "1", "0", or "X". A valid pattern, for example, could be "0123X032X021X013".

To specify which symbol position in the pattern is symbol 0, see the `:CMODe:EYE:CURSor` command.