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R&S®UPP
Instrument Function
Combo Display
"Gen Track"
The currently valid and every newly set generator voltage is stored as
the reference value and can then be used for referenced display (by all
channels). If a referenced unit has been selected in the "Unit " parameter field, the measurement result is referenced to this variable reference value and displayed.
SCPI command:
​SENSe<n1>:​REFerence:​MODE​ on page 737
Auto Scale
One-off automatic scaling of the bar graph.
"Exec"
Clicking this button trigger a once-only scaling of the bar graph; the
current minimum and maximum values are used for the scaling process.
The determined values are entered in the "Left " and "Right " parameter
fields below.
For multichannel instruments the lowest minimum value and the
highest maximum value of all open combo displays are determined
and entered for all channels in the "Left " and "Right " right parameter
fields below.
Spacing
Linear or logarithmic spacing of the bar graph.
"Lin"
Linear spacing of the bar graph.
If a logarithmic unit (dB unit) was selected in the "Unit " parameter field,
this field is displayed as not user-accessible and is set to "Lin " since it
makes no sense / is not possible to use a logarithmic bar graph to display negative values, or measurement values that have a logarithmic
unit.
"Log"
Logarithmic spacing of the bar graph.
This parameter is only available if a linear unit (V, W, etc) has been
selected in the "Unit " parameter field and its value range cannot contain
negative numbers.
Example:
Although ∆V is a linear unit, the measurement results can be negative
which means that logarithmic display is not possible.
Left
Used to set the left-hand value on the bar graph.
Negative values or the value 0.00000 are not allowed when "Spacing" = "Log", in which
case they cannot be entered.
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