:SYSTem:AUToscale

Command Syntax

:SYSTem:AUToscale

Description

Performs an Auto Scale. There is no query form of this command. If the Auto Scale is unsuccessful, one or more errors are placed in the last-in first-out error-message buffer. Use the :SYSTem:ERRor:NEXT? and :SYSTem:ERRor:COUNT? queries to determine if an error has occured and the cause of any errors. The following errors can be reported:

• 143, "Instrument Error;Autoscale: No valid sources are turned on."
• 144, "Instrument Error;Autoscale: Could not detect data rate."
• 144, "Instrument Error;Autoscale: Unable to detect reference clock frequency."

Before using Auto Scale, turn on at least one channel and ensure a valid signal and trigger source is connected. During an Auto Scale, the following tasks are performed:

• Scales the waveform vertically and horizontally for all the input channels that are turned on.
• Adjusts the trigger level in Oscilloscope, Eye/Mask, or Jitter Mode.
• Sets trigger bandwidth.
• Sets the horizontal scale and position of the lowest numbered channel turned on.
• If multiple eye diagrams are displayed software delay is used to align the eye diagrams. However, the following conditions must be true:
• Option 500, Productivity Package License, is installed,
• Rapid Eye is turned on (:ACQuire:REYE), and
• Rapid Eye align is specified (:ACQuire:REYE:ALIGn).

To autoscale only the vertical or only the horizontal axis, use the :SYSTem:AUToscale:VERTical or :SYSTem:AUToscale:HORizontal child commands.