Arbiter Systems 931A, Руководство по эксплуатации

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“ Rate of A ” causes the timer to display the rate of a valid triggering
event at the “A” input.
NOTE: The timer triggers without regard to polarity. If selecting
DC Applied as the trigger and a symmetric signal of greater than 6
Vpp is applied, the rate displayed will be double the actual frequency.
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“ Count A Events ” configures the timer circuitry to display the
number of valid trigger events, which occur on the “input”. These
may be periodic or random.
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“ Count A Gated By B ” sets the timer circuitry to count events
on input “A” only during the time in which a valid trigger condition
exists on input “B”. The events counted during successive valid “B”
input trigger periods are cumulative.
3.7.2.2 Timer Display Choices
To select whether time data is displayed in seconds or in cycles, select
Display Choice from the Timer CONFIG main menu and press ENTER.
For cycles, the data may be based on 50 Hz, 60 Hz, or the fundamental
frequency of the signal present at measurement Channel 1 (Ch 1 Hz).
Select Display Choice from the Timer Configuration Menu to view the
following display:
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Seconds sets the timer to display measurement results in seconds.
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Cycles (50 Hz) causes the timer to display the measurement result
in cycles, assuming a frequency of 50 Hertz.
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Cycles (60 Hz) causes the timer to display the measurement result
in cycles, assuming a frequency of 60 Hertz.
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Cycles (Ch 1 Hz) causes display of measurement results in cycles,
using the signal present at Channel 1 as the reference frequency.
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