5502A
Operators Manual
10-22
Calibrate the Time Base of an Oscilloscope
The horizontal deflection (time base) of an oscilloscope is calibrated with a method not
unlike the vertical gain calibration. A time marker signal is made from the Calibrator and
the peaks of the signal are aligned to the graticule line divisions on the oscilloscope.
The Time Marker Function
The Time Marker function, which is available through the Marker menu, lets you
calibrate the timing response of your oscilloscope. To access the Marker menu, push the
softkey below MODE until “marker” shows, see below.
gl033i.eps
Each option in the Marker menu is shown below.
• OUTPUT @ SCOPE terminal Shows the location of the signal output. If the
signal does not show on the oscilloscope, push . To disconnect the signal, push
.
• TRIG If you use the external trigger, use this key to move through the trigger
settings. The available trigger settings are: off, /1 (trigger signal shows on each
marker), /10 (trigger signal shows on every tenth marker), and /100 (trigger signal
shows at every 100th marker).
You can also toggle the trigger off and on with .
• MODE Shows you are in Marker mode. Use the softkey to change modes and open
the related menus for the other four oscilloscope calibration modes.
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