Racal Instruments 1256E, Руководство пользователя

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1256E User Manual
Racal Instruments
©
2002 Using the Front-Panel Controls 3-17
those that meet user-specified criteria.
Setting filter selection masks is performed easily as follows:
1. Press the top key next to the display. Rotate the knob until
the top line reads:
>---PATH CONTROL---<
2. Select line 2 (next to the top line) by pressing second key.
The display shows line 2 as being selected and will show a
flashing cursor on the first position of the mask (wildcards
are the default and appear as an asterisk “*”):
---PATH CONTROL---
>******************<
Select Paths(s)
3. Move the flashing cursor to the desired character position in
the filter mask by pressing the line 2 key as many times as
required to advance the cursor to the desired mask position.
4. Once in the desired position, rotate the knob left or right to
select the appropriate filter character or wildcard character.
---PATH CONTROL---
>P***3*************<
Select Paths(s)
<Reset Mask
5. When the mask is fully defined, pressing the line 3 key
“Select Path(s)” option will apply the mask condition to
defined paths. If the system has paths meeting the mask
criteria, they can be displayed, selected, and controlled in
the manner described earlier in this section:
---PATH CONTROL---
Select Filter Mask
>PATH3_____________<
Status: Open
If no paths exist that meet the filter criteria, the 1256 will
display:
>---PATH CONTROL---<
Select Filter Mask
{no paths found}
While selecting a mask, pressing the line 1 key or line 4 key
will institute other changes. If a mask is selected that is not
all wildcards, the display will give the option to reset the
mask:
---PATH CONTROL---
>P***0*************<
Select Paths(s)