Aeroflex 3901 - Page 211

Analog Duplex System
Subject to Export Control, see Cover Page for details.
8-5
RF Analyzers Level Offset
The RF Analyzer Level Offset parameter accounts for a loss or gain to be inserted into the RF
path between the 3900 receiver input Connector (ANT (Antenna) Connector
or T/R Connector).
The Offset value is indicated in +dB for positive (gain) values. When a positive value is entered,
Ext Gain is displayed to the right of the RF Analyzers Level Offset value field.
The Offset value is indicated in -dB for negative (loss) values. When a negative value is entered,
Ext Loss is displayed to the right of the RF Analyzers Level Offset value field.
When an offset is enabled, the warning symbol is shown beside the power field on the
Analyzers Tile
and in the upper left hand corner of the Channel Analyzer Tile.
Dx Frequency Offset
Allows the frequency spacing between the RF Generator and the RF Analyzer to be set. A
positive value sets the RF Generator to a higher frequency than the RF Analyzer setting. Value
specified in MHz, kHz or Hz as defined by user.
When an offset is enabled, the warning symbol is shown beside the output level entry field on
the Generators Tile.
RF Generator Frequency Setup
Locks or Unlocks the frequency spacing between the RF Generator setting and the RF Analyzer
setting. With the setting set to Lock the RF Generator frequency follows any change to the RF
Analyzer setting with a spacing equal to the Dx Frequency Offset value.
[Gen Offset]
Controls the use of the RF Generator Level Offset value.
ON inserts the defined RF Generator Level Offset
into the RF Path between the selected 3900
generator output connector and the device under test.
OFF removes the defined RF Generator Level Offset from the RF Path between the selected
3900 generator output connector and the device under test.
[Ana Offset] Soft Key
Controls the use of the RF Analyzers Level Offset value.
ON inserts the defined RF Analyzers Level Offset
into the RF Path between the selected 3900
receiver input connector and the device under test.
OFF removes the defined RF Analyzers Level Offset from the RF Path between the selected
3900 receiver input connector and the device under test.