Giga-tronics 8003, Руководство по эксплуатации

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8003 Precision Scalar Analyzer
2-44 Manual 20791, Rev. C, June 2001
As the preceding description implies, this function requires two markers. Therefore, if the
bandwidth function is successful, the cursor
∆
capability of the instrument will be turned on if
it was off. When this function is used, the cursor
∆
will always be positioned to mark the left
bandwidth marker on the display. Once the cursor capability has been turned on in this way, it
can only be turned off by returning to the cursor menu and using the [
CURSOR ON/OFF ] soft-
key (as previously described).
Other than the use of the cursor, the use of the bandwidth capability is very similar to the
Search Left and Search Right functions. The trace is put on hold after the search, and the dis-
play of success or failure messages will be the same. At this point, a new bandwidth search
value can be entered and another bandwidth search initiated by entering a new search value as
previously described for the Search Left and Search Right functions.
[ MAX] and [MIN]
Menu F5-1: Positions the cursor at the frequency corresponding to the maximum or minimum
level of the entry channel trace. When either key is pressed, the cursor capability of the instru-
ment will be turned on if it is off. The regular cursor will be positioned at the requested level.
MAX and MIN can be done with respect to the regular cursor when the cursor
∆
is active.
[
FLATNESS]
Menu F5-1: Automatically displays (in dBm) the total deviation (flatness) between the MAX
and MIN values of the displayed signal trace. This eliminates the necessity of having to read
the MAX value, then the MIN value, and then having to subtract to determine the flatness fig-
ure.
[ CURSR
→
MRKR N]
Menu 5-1: Moves the cursor to a defined marker position. An undefined marker is a marker that
has not been assigned to a frequency since a preset was performed, or since the marker was cleared.
When this softkey is pressed, the cursor capability will be turned on if it is off. The entry area of the
display will present a prompt to enter the number of the marker (0 through 9) to which it is desired
to move the cursor. The spin knob can move the cursor to the next marker in the indicated direc-
tion. Continuing to spin the wheel will cause the routine to jump from marker to marker until the
desired frequency is reached.
NOTE:
Markers need to be turned ON prior to this function.
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