Anrtisu Cell Master MT8212B, Руководство пользователя, Страница: 77 / 294

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Time Span
— Time Span sets the total time that will be taken to fill the
waterfall display, from 0 to 4320 minutes (72 hours). Enter the number us-
ing the Up/Down arrow key or use the keypad and select the appropriate
soft key for days, hours, minutes, seconds, milliseconds or microseconds.
The current setting will be displayed in the message area. A time span of 0
seconds will display as
Auto
and the instrument will sweep as fast as possi-
ble. Setting this value also determines the sweep interval.
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Auto Save
— Auto Save saves the screen when the waterfall display is
full. Select the RECALL DISPLAY (0) key to view and recall the saved
displays (page 3-15).
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Cursor
— The cursor controls enable the user to look through the waterfall
display and read the power level at a selected frequency and time. The
time, frequency and power level at the measurement point are shown in the
message block at the bottom of the screen. Selecting the Cursor soft key
turns the cursors on.
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Time Cursor
— The Time Cursor is a white horizontal line that can be
positioned anywhere in the waterfall display. Select
Time Cursor
and
use the Up/Down arrow key to move the cursor to the desired time.
The time the trace was taken is shown in the bottom message block. If
the cursor is moved into a portion of the display where there is no
data, the date is shown as January 1, 1970 at midnight. The time cur-
sor will stop the sweep collection. Use the cursor after a full capture is
completed, or on a recalled display, in order to not miss any collection
of data.
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Freq Cursor
— The Frequency Cursor is a vertical white line that can
be positioned at any frequency in the span range using the Up/Down
arrow key. Pressing the Up arrow key moves the cursor to a higher
frequency while pressing the Down arrow key moves the cursor to a
lower frequency. The frequency is shown in the bottom message
block.
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Back
— Returns to the previous menu level.
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Spectrum
— Selecting
Spectrum
returns to the traditional spectrum ana-
lyzer display and MEAS/DISP soft key menu.
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Signal Strength
— Selecting Signal Strength displays the power at a single
frequency (in dBm) along with an optional audible indicator. The frequency
of the audible indicator increases as the measured signal strength increases.
This mode is especially useful when attempting to locate an emitter using a
directional antenna.
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Volume
— Select the Volume soft key to adjust the sound level of the au-
dible signal strength indicator using the Up/Down arrow key. The current
volume setting is shown in the lower measurement block.
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Speaker Tone On/Off
— The Speaker Tone On/Off soft key toggles the au-
dible indicator on or off. The default is On.
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Back
— Returns to the previous menu level.
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RSSI
— RSSI provides a way to see the scrolling display of received signal
strength in zero span. Once a full screen of data has been acquired, the oldest
data disappears off the left edge of the display.
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Time Interval
— Time Interval sets the time between data points. The inter-
val can be set from 150 ms to 1 minute. Enter the number using the
Chapter 2 Functions and Operations
2-53