HP 83481A, User Manual, Page: 43 / 98

Channel Setup Menu
Displaying the Channel Setup Menus
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The Oset softkey moves the waveform vertically . It is similar to the position
control on analog oscilloscopes . The advantage of digital oset is that it is
calibrated. The oset voltage for electrical channels is the voltage at the
center of the graticule area, and the range of oset is 612 times the full
resolution channel scale . F or optical channels , the oset wattage is the
wattage two graticule divisions above the bottom of the screen. This is set
because , unlike voltage displays , \negative" power levels do not exist but the
zero power level can be viewed clearly when the oset is set to zero watts .
Y ou can use the knob , arrow keys , or keypad to change the oset setting. The
ne mode also works with oset.
When an HP 54700-series active probe is used with the plug-in module and
is connected to the probe power connector adjacent to the channel input,
the oset control adjusts the external scale factor and oset of the hybrid
inside the active probe . A probe connected to the auxiliary power connector
adjacent to the trigger input will function, but the channel scale factor will
not be adjusted automatically .
The optical channel displays the value in watts and the electrical channel
displays the value in volts .
K ey Path 4 Channel 5
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