HP 8920A, Руководство пользователя

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S:\HP892XX\USRGUIDE\manual\confscrn.fb
Chapter 7, Configure Screen
Field Descriptions
RF Gen Volts
This field specifies whether you want RF voltages expressed as the voltage across
a 50 ohm load, or the open circuit voltage (emf).
Operating Considerations
This setting affects the RF Generator’s and the Tracking Generator’s amplitudes.
RF In/Out
This field is used to indicate losses or gains between the RF IN/OUT port and the
device-under-test.
• Enter a positive value to indicate a gain (such as an amplifier gain). When the
RF IN/OUT port is used as an output, the RF Generator’s (or Tracking Generator’s) lev-
el is automatically set the specified amount below what is indicated in the RF Genera-
tor’s
Amplitude field. Example; if this value is 10 dB, and the Amplitude field
shows 0 dBm, the actual level out of this port is
−1
0 dBm.
When this port is used as an input, the TX Power measurement and Spectrum Ana-
lyzer’s Marker Level ( Lvl ) are automatically reduced by that amount.
• Enter a negative value to indicate a loss (such as cable loss). The RF Generator’s (or
Tracking Generator’s) level out this port is automatically set that amount above what is
indicated in the RF Generator’s
Amplitude field.
When used as an input, the TX Power and the Spectrum Analyzer’s marker level
( Lvl ) measurements are increased by that amount.
This field is only used when the
RF Level Offset
field is set to
On
.
See Also
RF Level Offset
field description, on page 265