250 WM-OM-E Rev I
Options
Use this dialog to add or remove software options. For information about software options, contact
your local LeCroy Sales and Service office, or visit our Web site at http://www.lecroy.com/options.
Options that you purchase, such as JTA2, add performance to you instrument. This added
performance is seen in the new math functions or parameters that you can choose from when doing
Measure or Math setups.
Preferences
Audible Feedback
You can elect to have audible confirmation each time you touch a screen or front panel control.
1. In the menu bar touch Utilities; then touch Preferences in the drop-down menu.
2. Touch the "Audible Feedback" Enable checkbox so that the scope emits a beep with each
touch of the screen or front panel control.
Auto-calibration
You can choose to have your instrument automatically recalibrate itself whenever there is a
significant change in ambient temperature. If you do not enable this option, the scope will only
recalibrate at startup and whenever you make a change to certain operating conditions.
1. In the menu bar touch Utilities; then touch Preferences in the drop-down menu.
2. Touch the "Automatic Calibration" Enable checkbox.
Offset Control
As you change the gain, this control allows you to either keep the vertical offset level indicator
stationary (when Div is selected) or to have it move with the actual voltage level (when Volts is
selected). The advantage of selecting Div is that the waveform will remain on the grid as you
increase the gain; whereas, if Volts is selected, the waveform could move off the grid.
Note: Regardless of whether you select Volts or Div, the "Offset" shown in the channel setup dialog always indicates volts.
However, when Div is selected for the Offset Control, the offset in volts is scaled proportional to the change in gain, thereby
keeping the division on the grid constant.
1. In the menu bar touch Utilities; then touch Preferences in the drop-down menu.
2. Touch the Acquisition tab.
3. Under Offset Setting constant in:, touch either the Div or Volts button.
Delay Control
As you change the timebase, this control allows you to either keep the horizontal offset indicator
stationary (when Div is selected) or to have it move with the trigger point (when Time is selected).
The advantage of selecting Div is that the trigger point will remain on the grid as you increase the
timebase; whereas, if Time is selected, the trigger point could move off the grid.
Note: Regardless of whether you select Time or Div, the "Delay" shown in the timebase setup dialog always indicates time.
However, when Div is selected for Delay In, the delay in time is scaled proportional to the change in timebase, thereby
keeping the division on the grid constant.
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