Boonton 4500B Peak Power Meter - Manual (Page 66)

Boonton 4500B RF Peak Power Analyzer
Getting Started 3-32
MENU ITEM EXERCISE
CHAN (continued)
Chan 1 > Vert Center
Press the Chan 1 > Vert Center menu key. Use any of the data entry controls to shift the vertical
center of the display to correspond to power levels of -10, 0 and +10 dBm. Observe the position of
the display at each setting and note that the VertCenter parameter changes to match the selected
level. Note also that the power readings do not change and the display is moved without recapture
of data.
Chan 1 > Calibration
Used at the start of this procedure to calibrate the sensor.
Chan 1 > Exten >
Press the Chan 1 > Exten menu key to access the Extensions submenu (Figure 3-6).
Chan 1 > Exten
Press the Chan 1 > Exten >Units menu key to see the Units selection menu. The top menu box
> Units displays the current units of the channel. To change the units to Watts, Volts, dBV, dBmV or
dBuV, press the corresponding menu key. The selected unit will appear in the top menu box
location. Return the units to dBm before proceeding to the next step.
Chan 1 > Exten
Press the Chan 1 > Exten > Corrections menu key to see the Corrections sub-menu.
> Corrections
Chan 1 > Exten
Press the Chan 1 > Exten > Corrections > dB Offset menu key to display or enter the dB Offset
>Corrections vertically on the display (Positive offsets move the CCDF up; negative offsets move it down).
> dB Offset Unlike Chan 1 > Vert Center above, dB offset does affect the power readings.
Note
In practice, dB Offset is used to compensate for attenuators or amplifiers inserted between the sensor and
the device under test. Freq CF is used to compensate for losses in cables, adapters, switches and other line
equipment inserted between the sensor and the calibrator output, or between the sensor and the device
under test, but not both.
Chan 1 > Exten
Press the Chan 1 > Exten >Corrections > FreqCF menu key to display or enter a frequency
>Corrections cal-factor. If a value is entered it will temporarily override the interpolated value and change
> FreqCF Meas > Freq CH1 to ―—― (undefined). If a frequency value is entered into Meas > Freq CH1 or if
the 4500B is powered to Standby or OFF, the interpolated value will be restored.