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1780R-Series Operator’s Manual
3–1
Operating Instructions
Large Knob And Associated Switches
Timing Cursors
Push the TIME switch to enable the timing cursors and obtain a
menu on the vectorscope CRT. Use this menu to choose cursors that
track together or are positioned separately, and to choose between
locate and measure.
When <SEPARATE> is selected by touching the <SEPARATE/
TRACK> area of the screen, the large knob moves Cursor One or
Cursor Two, depending on which cursor is selected (outlined). When
<TRACK> is selected, the large knob moves both cursors at the
same time.
The two cursors appear as bright-up portions of the waveform
display when <LOCATE> is selected, or as bright-up dots when
<MEASURE> is selected. The readout indicates the time difference
between Cursor One and Cursor Two, in five nanosecond intervals.
If magnification or variable sweep is selected, the cursor interval is
magnified correspondingly. Time difference between Cursor One and
Cursor Two can be determined, even though they may not both be on
screen at the same time.
To change the large knob assignment from one cursor to another,
touch the quadrant labeled <CURSOR 1 / CURSOR 2>. The current
assignment is outlined by a box.
Cursors appear to “wrap around” in One Line and Two Line sweeps
because the total cursor range (160 ms) extends beyond the One or
Two Line sweep length. A beep sounds at both ends of the range.
Time difference between Cursor One and Cursor Two can be
determined, even though they may not both be on screen at the same
time.
Pushing REFERENCE SET has no effect while Timing cursors are
enabled.
Timing cursors are not valid in Field modes.
1780R-Series Operator’s Manual
3–1
Operating Instructions
Large Knob And Associated Switches
Timing Cursors
Push the TIME switch to enable the timing cursors and obtain a
menu on the vectorscope CRT. Use this menu to choose cursors that
track together or are positioned separately, and to choose between
locate and measure.
When <SEPARATE> is selected by touching the <SEPARATE/
TRACK> area of the screen, the large knob moves Cursor One or
Cursor Two, depending on which cursor is selected (outlined). When
<TRACK> is selected, the large knob moves both cursors at the
same time.
The two cursors appear as bright-up portions of the waveform
display when <LOCATE> is selected, or as bright-up dots when
<MEASURE> is selected. The readout indicates the time difference
between Cursor One and Cursor Two, in five nanosecond intervals.
If magnification or variable sweep is selected, the cursor interval is
magnified correspondingly. Time difference between Cursor One and
Cursor Two can be determined, even though they may not both be on
screen at the same time.
To change the large knob assignment from one cursor to another,
touch the quadrant labeled <CURSOR 1 / CURSOR 2>. The current
assignment is outlined by a box.
Cursors appear to “wrap around” in One Line and Two Line sweeps
because the total cursor range (160 ms) extends beyond the One or
Two Line sweep length. A beep sounds at both ends of the range.
Time difference between Cursor One and Cursor Two can be
determined, even though they may not both be on screen at the same
time.
Pushing REFERENCE SET has no effect while Timing cursors are
enabled.
Timing cursors are not valid in Field modes.