Controls, Connectors, and Indicators
Figure 2-7. Measurement controls.
43J CURSOR VOLTS—Turns on the cursor volts measurement mode and
displays two positionable horizontal cursors. iOne cursor is automati
cally positioned at the upper peak of the displayed waveform and the
other at the lower peak. The voltage difference between the upper
and lower cursors is displayed in the top line of the crt graticule. Cur
sors can be repositioned as desired using the control to move the
upper cursor and the |<- OR DELAY control to move both cursors to
gether.
The measurement channel for the cursor volts measurement mode is
set to Channel 1 or Channel 2 when either is displayed alone. If both
CH 1 and CH 2 are selected, the measurement channel is set to
Channel 1 unless Channel 2 had been selected first.
(44) 1/TIME—Turns on the 1/TIME (frequency) measurement mode and
displays two positionable vertical cursors in A MODE. ALT and B
MODE displays have two B sweeps, and in ALT MODE the A sweep
has two intensified zones. The 1/TIME difference between the left and
right cursors or edges of the B sweep is displayed in Hertz in the top
line of the crt graticule. The displayed value accurately represents the
frequency of a repetitive input signal when the cursors or edges of the
B display are positioned so that they span one complete period of the
waveform.
(45) TIME —Turns on the delta-time measurement mode and displays two
positionable vertical cursors in A MODE. ALT and B MODE displays
have two B sweeps, and in ALT MODE the A sweep has two intensi-
2245A Operators
2-19
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