Rpm Measurement; Time Interval Measurement(A-B) - UNISource Corporation FC-8300 Operation Manual

UPDATE COUNT IS DISPLAY.
3-6. RPM (Rotation Per Minute) Measurement <FC-8150, FC-8030, FC-8300>
3-7. Time Interval Measurements(A→ → → → B) < FC-8150U, FC-8030U >
In time interval mode, unit measures the elapsed time from a selected edge of the
input A waveform to a selected edge of the input B waveform. For a stable reading,
the two input signals should be related to each other such that this time interval
remains reasonably constant from one measurement to the next. For example, two
digital waveforms derived from the same clock would be suitable; two arbitrary
frequencies from separate function generators would not.
Frequency Ratio Measurements (A/B) <
3-8.
In this mode of operation, the counter displays the ratio of the frequency applied to
input A to the frequency applied to input B. The input A frequency should preferably
1.800.561.8187
a. Apply the signal to be measured to the input A BNC, and then the
counter displays the RPM. Maximum count is 999999999. If this is
exceed, the overflow message displays as "OF"
b. Low pass filter and attenuator, coupling switch application is same as
frequency measurements mode.
a. Connect the signal to be measured to the input A and input B.
b. Set the T.l(A→B) of function switch. The switch label serves as a
reminder that the measurement starts at the input A edge and stops at
the input B edge.
c. Select desired edge of each waveform using the input A, and input B
slope switches push switch in for negative-going edge, leave out for
positive-going edge.
d. Set a trigger level control to preset (Push In). This ensures that both
input A and input B are triggering at the same level (approximately the
average) on their respective waveforms.
e. Select the degree of resolution desired, using the gate time switch
f. Time interval is given by the display, the gate indicator lights while each
measurement is in progress, and the display is updated at the end of
each measurement interval.
g. Press the hold switch, "freezes" the display at the existing reading when
hold is released, a new measurement begins (Gate Indicator Lights),
but the display continues to hold the old reading until the new
measurement is completed.
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