Tabor Electronics 5251, Руководство пользователя

Страница: 80 / 298

TE5251
User Manual
3-28
The Auxiliary
Panels
The Auxiliary tab provides access to a group of panels that control
some auxiliary and Utility functions.
There are six panels in this group: Counter/Timer, which provides
access to the auxiliary Counter/Timer function; Pulse Generator,
which provides access to the auxiliary digital pulse generator
function; and Half Cycle, which provides access to the half cycle
functions.
The Auxiliary set of panels is shown in Figure 3-18. Each of the
panels is described below.
Figure 3-18, the Auxiliary Panels
Counter/Timer
The Counter/Timer panel contains controls that select the
measurement function and adjusts the counter/timer parameters
for measuring external signals. The counter/timer measures
signals that are connected to the TRIG IN input. The various
parameters that control the counter/timer features are described
below.
State
The State Group has controls to turn the counter on and off. And to
reset the counter and arm it for the next measurement cycle. Note
that when the counter function is turned on, all other waveform
generation features of the 5251 are purged.
Measurement Function
The measurement function group has control to select the
measurement function for the counter/timer operation. The 5251
can measure the following function: Frequency, Period, Period
Averaged, Pulse Width, and Totalize. The totalize function has two
options. If Totalize Infinite function is selected the input will count
every legal pulse at the counter input, for an indefinite period of
time, and will display the total number of pulses until the counter
has been reset. If Totalize Gated function is selected, the input will
count every legal pulse at the trigger input for a period of time that
is defined with the Gate Time parameter.