Vertical Offset
The 11401 and 11402 oscilloscopes
offset to position the
on the
mode offset
determines
position, but when a
in unit provides the X component of an XY display, offset controls horizontal
position.
is an
and its units are
of
input
volts.
Offset subtracts a precision voltage
the input signal. To access the offset
function, touch the double-ended arrow at the left edge of the
of
offset is then
to the Lower Control knob.
11401 and 11402, changing the
deflection factor magnifies or
compresses the displayed signal about
center. Therefore, to
a
potion of the input signal in greater detail, use
Offset
Lower Control
to position the area of
to screen center, Next,
the Vert Size
(the Upper Control knob) to adjust
display to the
needed for
examination.
BW Limit
Two
bandwidth
(low-pass) filters ara available
for each
channel. The
of these
filters is to reduce the amplitude
of unwanted noise or
at frequencies above the frequency of
the
of interest. The user has a choice of cut-off (-3
frequencies,
either
20
or
independently for each channel. The trigger,
auxiliary ‘rigger, and
signal bandwidths for a channel are always the
same. The auxiliary
is the signal
to the right plug-in compartment.
DC Circuit Loading
In the
and
the coupling capacitor isolates both the input
termination and the amplifier from external dc voltages.
the
3-2
and
