Operators Manual Owner manual

HDO6000 High Definition Oscilloscope

Timebase

Timebase, also known as Horizontal, settings control the trace along the X axis. These settings are

shared by all channel traces.

The time represented by each horizontal division of the grid, or Time/Division, is most easily adjusted

using the Front Panel Horizontal knob. Full Timebase set up, including sampling mode and clock source

selection, is done on the Timebase dialog, which can be accessed by either choosing Timebase >

Horizontal Setup from the menu bar, or touching the Timebase descriptor box.

The main Timebase dialog contains settings for Sampling Mode, Timebase Mode, and Real Time

Memory. Related tabs open dialogs to set up Sequence Mode and Clock Source.

Timebase Settings

Sampling Mode

Real Time, Sequence, Roll, or RIS mode.

Timebase Mode

These controls set the timebase shared by all channels.

Time/Division - the time represented by one horizontal division of the grid. Touch the Up/Down Arrow

buttons on the Timebase dialog or turn the Front Panel Horizontal knob to adjust this value.

Delay - The time relative to the trigger event to display on the grid. In Real Time sampling mode, the

trigger event is placed at time zero on the grid. Delay may be time pre-trigger, entered as a negative

value, or post-trigger, entered as a positive value. Raising/lowering the Delay value has the effect of

shifting the trace to the right/left, enabling you to focus on the relevant portion of longer acquisitions.

Set to Zero - returns Delay to zero.

Real Time Memory

These controls set how the oscilloscope samples when in Real Time mode.

Sampling Rate - the number of samples taken per time division when using a Fixed Sampling Rate. It

changes to Max. Sampling Points, the number of samples taken per acquisition, if you choose to Set

Maximum Memory.

Set Maximum Memory - automatically adjusts the sampling rate to take the maximum number of

samples possible given the amount of pre- or post-trigger delay and the Time/div, up to the

oscilloscope's maximum record length. This is a quick way to optimize the sample rate for fast

timebases when in Real Time mode.

Fixed Sampling Rate - activates the Sampling Rate field for you to set your own rate. Lowering the rate

can extend the acquisition to accommodate slower timebases or longer delays.

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