HP 70000 series, User Manual

Page: 191 / 447

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MIN HOLD A ,
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MIN HOLD B ,
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MIN HOLD C
(minimum hold) compares the current amplitude value of each point on a trace to each
corresponding value detected during the previous sweep , then retains the minimum values .
The trace is displayed continuously and negative-peak detection is activated automatically .
Functional Type:
active-trace processing
Firmkey A ccess:
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BWSwp
Preset State:
O
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MINIMUM PEAK
moves the marker to the lowest detected peak level on the trace .
Functional Type:
marker
Firmkey A ccess:
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Marker
Preset State:
O
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MINIMUM POINT
moves the marker to the lowest detected level on the trace . Figure 3-1 illustrates the use of
the marker softkey function.
The spectrum analyzer evaluates signals by monitoring the vertical excursions of the trace . The
smallest vertical excursion that constitutes a signal is 6 dB unless otherwise specied with the
peak excursion softkey function.
See the
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PEAK EXCURSN softkey description.
4-96 Softkey Descriptions