R&S NRP-Z27 Operating Manual page 28

Overview
Table 2-1 Virtual power meter keys
Button Function
Exit Terminates the program. The current settings are saved and recalled the
next time the program is started.
W Selects Watt as the display unit.
dBm Selects dBm as the display unit.
Zero Zeroes the power sensor module.
dB Selects dB as the display unit. This is the log of the ratio of the measured
value to the reference value.
<% Selects % as the display unit. The difference between the measured value
and the reference value is expressed as a percentage.
M2Ref Makes the current measured value the reference value for the relative
display units dB and %.
Offset Turns the global offset correction for the power sensor module on or off. If
the offset correction is Off, the Offset/dB entry field has a grey background.
On/Off
Averaging Turns auto-averaging on or off. When auto-averaging is on, the Length entry
Man/Auto field has a grey background; the current averaging factor is displayed.
Apply Accepts edited numerical values in the Frequency/Hz, Value/dB and
Length entry fields and transfers them to the sensor.
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 module. The valid range is –100 to
100. The 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 power sensor module unless you use the
Apply button or the Enter key to terminate the entry.
1169.3870.12 2.2
R&S NRP-Z27/-Z37
Key combination
Alt + E
Alt + W
Alt + M
Alt + Z
Alt + B
Alt + %
Alt + R
Alt + N
Alt + T
Alt + A
or Enter key
E-1