Offset Field - HP 16534A User Reference

The Channel Menu

Offset Field

Offset Field
You use the Offset field to set the vertical position of the waveform on the
screen. It is set for the channel currently displayed in the Input field.
Vertical position determines the vertical placement of the waveform. Offset
is measured in volts. Each waveform display area is divided into four
vertical divisions. The divisions are marked by small tan-colored tick marks
at the left and right sides of the waveform display area.
Offset is the voltage represented at the center vertical tick mark in the
waveform display. It is a dc voltage that is added to or subtracted from the
input signal so that the waveform can be centered on the waveform display.
Offset range and resolution are dependent on vertical sensitivity (V/Div) as
shown in the table below. The table values are based on a 1:1 probe setting.
Offset Range and Resolution
V/Div Setting
4 mV - 100 mV/Div
>100 mV - 500mV/Div
>500mV - 2.5 V/Div
>2.5 V - 10 V/Div
When you select the Offset field, the offset value of the channel currently
displayed in the Input field can be changed by turning the knob. As you turn
the knob, the value in the Offset field changes, and the position of the
waveform moves up or down on the waveform display. Offset works similar
to the vertical position control of an analog oscilloscope, but offset is
calibrated.
Any valid offset value can also be entered from the keypad. The keypad will
appear when you touch the Offset field when the field is light blue. The
default value for the Offset field is 2.5 V (TTL preset value).
If acquisitions have been stopped (either by touching the Stop field or by a
completed measurement), offset changes will not be reflected on the
waveform until Run is touched and the next acquisition is displayed.
Changes to Offset during a repetitive run will be seen on the next displayed
acquisition because the hardware is reprogrammed between acquisitions.
3-6
Offset Range
±2 V
± 10 V
± 50 V
± 250 V
Offset Resolution
1 mV
1 mV
1 mV
2 mV