HP 16533A, User Reference, Page: 62 / 152

Vb On Field
The Vb marker is shown on the waveform display as a horizontal dashed
yellow line. The border around the Vb On field is also yellow so you can
more easily correlate the value in this field to the yellow Vb marker.
When you select the Vb On field, you are able to assign the Vb marker to one
of the oscilloscope acquisition channels. A pop-up menu appears that lists
all possible channels for assignment of the Vb marker. The default channel
is the lowest numbered channel in the oscilloscope.
The channel selected for assignment to the Vb marker does not have to be
displayed in the waveform area. If the selected waveform is not in the
waveform area of the screen, the Vb marker will not be displayed. If there
are multiple occurrences of the selected waveform in the waveform area of
the screen, only the uppermost occurrence of the waveform will display the
Vb marker.
Overlay and waveform math traces cannot be selected for voltage marker
placement.
Vb Volts Field
The Vb marker is shown on the waveform display as a horizontal dashed
yellow line. The border around the Vb Volts field is also yellow so you can
more easily correlate the value in this field to the yellow Vb marker.
The voltage displayed in the Vb Volts field is measured relative to the 0V
reference for this channel.
When you select the Vb Volts field, you can change the voltage value by
turning the knob or by entering a voltage value from the pop-up keypad. The
keypad appears when you touch the Vb Volts field when the field is light
blue.
The range of voltage levels for the Vb Volts field is
±
2 times maximum range
for the selected channel. The maximum range value is affected by the probe
factor and V/div settings.
The Marker Menu
Vb On Field
5-20