HP 70000 series, User Manual

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VID LIN On Off
Control the video trigger display lines .
The VTDL command displays two horizontal video trigger display lines: trigger level and
hysteresis oset. The trigger level line is a line that is placed at a level which corresponds
to the current video trigger level. On HP 70004A color displays , the line is the same color
as dened for MARKERS. This is determined by the display's \A djust Color" menu. On
monochrome displays , a dot-dash line is used.
The hysteresis oset line is an line that is oset from the trigger level line so as to indicate the
size and polarity of video hysteresis necessary to cause a video trigger . On HP 70004A color
displays , the line is the same color as dened for ADVISE (UNCAL) indicators . On monochrome
displays , a sparse dot line is used.
The video trigger display lines are automatically activated when video triggering is selected and
when either the video trigger level command (VTL) or the video trigger hysteresis command
(VTH) is active . (The video trigger level display line cannot be turned o when either VTL or
VTH is active .)
The display of these lines is automatically deactivated when another trigger mode is selected
(as long as neither VTL nor VTH is active). The VTDL command can be used to override the
automatic operation. The displays work in logarithmic , linear volts , and linear watts display
modes .
Functional Type:
bandwidth
Firmkey A ccess:
NNNNNNNNNNNNNNNNN
BWSwp
Preset State:
O
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VIEW A/BLANK A
selects two functions . When set to view , stored trace data is displayed. When set to blank,
stored trace data is blanked from the display , but remains in reserved memory . Trace B and
Trace C have a corresponding view and blank softkey function.
This softkey is active after
NNNNNNNNNNNNNNNNNNNNNNN
STORE A is pressed and disappears when
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
CLEAR WRT A or
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
INSTR PRESET is pressed.
4-180 Softkey Descriptions