Arbiter Systems 931A, Руководство по эксплуатации

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3.7.3.1 Timer States
The Timer has four states of operation: Standby, Armed, Active, and
Stopped. Initially, the timer will be in Standby. After configuring the
timer, press the ARM/RESET key to Arm the timer.
A timing cycle begins with a start trigger, and the Timer switches
from Armed to Active. When the predetermined stop trigger occurs, the
timing cycle ceases, and the timer Stops (except in Count Modes, where
it switches to Standby).
The ARM/RESET key functions as a reset key, when the timer stops
in time measurement modes, or at any time in count measurement modes.
Press ARM/RESET to clear the timer data and reset the display to
zero. Pressing ARM/RESET also switches the timer from the Stopped
to Standby.
The Model 931A displays the timer-state below the word “Timer.” A
blank status indicator signifies the instrument is in Standby.
3.7.3.2 Time Measurements
Time Measurement Timer functions return a time value with finite start
and stop points. Measurements falling in this category are:
ˆ
Time A to B
ˆ
Time A for X Counts
ˆ
Time Width of A
During these modes of operation, the timer cycles through all four
timer states.
3.7.3.3 Count Measurements
Count Measurement Timer functions result in measurements having a
finite starting point, then are continuously updated. Measurements falling
into this category are:
ˆ
Rate of A
ˆ
Count A Events
ˆ
Count A Gated by B
In these modes of operation, the timer can only be in the Standby,
Armed or Active states as described in Section 3.7.3.1. The Stopped State
is invalid with these modes.
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