Overview R&S NRP-Z11/21/31/41/61/211/221
1137.7470.12 2.2 E-7
Table 2-1 Virtual power meter keys
Button Function Key combination
Exit Terminates the program. The current settings are saved and recalled the
next time the program is started.
Alt + E
W Selects Watt as the display unit. Alt + W
dBm Selects dBm as the display unit. Alt + M
Zero Zeroes the power sensor. Alt + Z
dB Selects dB as the display unit. This is the log of the ratio of the measured
value to the reference value.
Alt + B
:% Selects % as the display unit. The difference between the measured value
and the reference value is expressed as a percentage.
Alt + %
M2Ref Makes the current measured value the reference value for the relative
display units dB and %.
Alt + R
Offset
On/Off
Turns the global offset correction for the power sensor on or off. If the offset
correction is Off, the Offset/dB entry field has a grey background.
Alt + N
Averaging
Man/Auto
Turns auto-averaging on or off. When auto-averaging is on, the Length entry
field has a grey background; the current averaging factor is displayed.
Alt + T
Apply
Accepts edited numerical values in the Frequency/Hz, Value/dB and
Length entry fields and transfers them to the sensor.
Alt + A
or Enter key
Table 2-2 Virtual power meter entry fields
Entry field Function
Frequency/Hz Frequency of the RF carrier in Hertz.
Value/dB Attenuation in dB of the component connected to the power sensor. The valid range is –100 to 100.
The global offset correction must be activated beforehand with the Offset On/Off button if this entry
field is to be edited.
Length Length of the averaging filter (= averaging factor). The valid range is 1 to 65536. Averaging must be set
to manual with the Averaging Man/Auto button if this entry field is to be edited.
Scientific notation can also be used for the entry fields. If an invalid entry is made, an error message is
output. An edited numerical value will not be transferred to the sensor unless you use the Apply button
or the Enter key to terminate the entry.
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