Controls,
Connectors,
and
indicators
Activates the Delta Time measurement function and
cancels the AV or 1/At measurement functions. When At
is selected with Inten or Alt horizontal display modes,
two delay times are
defined.
When At is selected with
either A-Sweep or
B-Sweep
horizontal display, two
vertical cursors are established. One delay time or
cursor position is controlled by the A REF OR DLY POS
control,
and the other is controlled by the A control. The
CRT readout displays either the difference between the
two delay times or the equivalent time between the
vertical cursors.
If SEC/DIV VAR is not in the detent position, and either
the A-Sweep or the
B-Sweep
horizontal display mode is
selected,
the CRT readout displays delta-time as a ratio,
where five divisions correspond to 100% ratio.
When At is active, pressing the At button deactivates
the function.
1/At Momentarily pressing the At and AV buttons
Function together activates the
1/Delta-Time
function and
cancels any other Delta measurement function. The
waveform display and the Delta controls operate the
same as for At, but the readout shows the reciprocal
of the time in Hz (frequency).
If the SEC/DIV VAR control is not in the detent
position (full clockwise rotation), and the A-Sweep or
B-Sweep
horizontal display mode is selected, the
readout displays the time between cursors as
degrees of phase, where five divisions are equal to
360 degrees.
When the
1/Delta
Time function is active, pressing
the At and AV buttons together deactivates the
function.
34) At Button
5-16
2465B/2455B/2445B Operators
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