Tektronix VM700T, Руководство пользователя

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VM700T Option 01 (NTSC) & Option 11 (PAL) User Manual
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Auto Mode
Auto mode of the VM700T Video Measurement Set executes a configurable list
of continuously performed measurements. Whereas Measure mode makes
individual measurements that are graphically displayed, Auto mode performs all
the selected measurements and generates the measurement results in tabular
format. The measurements to be made and the limits to measure to are obtained
from the configuration files. The Auto mode measurements provide a large
amount of information about the signals being measured and indications of
violations of user-selectable measurement limits. This section discusses Auto
mode operation and how to configure it.
Auto Mode Display
When you press the Auto button, the VM700T displays the measurements being
made in Auto mode. Due to the large number of measurements made by Auto
mode, not all of them can be displayed on the screen at once. Use the control
knob to scroll the display to view all of the list of measurements and results. As
each measurement is made, the measurement’s name, the measured value, the
measurement units, and the limit values for the measurement are highlighted.
When the complete list of measurements has been made, the highlighted text
returns to normal display.
The Auto mode measurements are not affected by the sync and clamping
parameters set in Waveform mode for the manual measurements.
In Auto mode, the VM700T lists measurement names on the left-hand side of the
display. Each name is followed by the measurement result, and a notation of the
measurement’s reference where applicable.
When the user definable limits are violated, the violated limits are printed on the
screen, and an indicator appears between the measurement result readout and the
Violated Limits — Lower column. If the indicator is a single “*” (asterisk), a
Caution Limit has been violated. If the indicator is a “**” (double asterisk), an
Alarm Limit has been violated.
If a measurement cannot be made for some reason, the result readout is replaced
with a line of dashes and is considered a limit violation.
Setting the Caution and Alarm Limits is discussed later in this section.
Measurement
Identification
Violated Limits Indication
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