HP 70000 series, User Manual

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A 6DL*(A+B)/C)
P erforms trace math DL*(A+B)/C 7 A with each sweep .
The APBDCTL command requires a linear display mode . It multiplies the sum of traces A and B
by the display line . Then, this result is divided by trace C. The nal results are stored in trace
A. If trace A is in clear-write mode , the function is continuous and occurs every sweep .
This command allows ratio measurements to be made as a sweep is taken. If trace B has
points near the bottom of screen, overow or poor precision can occur . If a division by zero is
attempted, a division by the smallest representable value will be performed instead.
T o ensure that correct data is displayed, be sure that a sweep is taken before using this
command. Only one trace math operation may be active at any given time .
Functional Type:
active-trace processing
Firmkey A ccess:
NNNNNNNNNNNNNNNNN
BWSwp
Preset State:
O
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A METER On Off
Enables readout of currently updated trace point.
The AMETER command enables a readout of the amplitude of the blank-ahead marker in the
display's message area. The blank-ahead marker is the point on the trace which is currently
being updated by new measurement data.
Functional Type:
amplitude
Firmkey A ccess:
NNNNNNNNNNNNNNNNN
Amptd
Preset State:
O
4-12 Softkey Descriptions