Technical data

Measurement Setup 15
Agilent N8201A Performance Downconverter Synthetic Instrument Module, 250 kHz to 26.5 GHz 311
Factory Preset: Auto
Range:
Auto/Man
1 to 12
Remote Command:
[:SENSe]:MCPower:RCARrier:AUTO OFF|ON|0|1
[:SENSe]:MCPower:RCARrier:AUTO?
[:SENSe]:MCPower:RCARrier<integer>
[:SENSe]:MCPower:RCARrier?
Example:
MCP:RCAR:AUTO ON
MCP:RCAR 3
MCP:RCAR?
Ref Carrier Freq
Determines whether the Ref Carrier Freq is calculated based on the Center frequency (Auto)
or the Center frequency is calculated based on the Ref Carrier Freq (Man). The Ref Carrier
Freq value will always be updated if the Ref Carrier Freq setting is changed, whether the
Mode is set to Auto or Manual.
If Ref Carrier Freq is set to auto, it is assumed that the carriers are distributed evenly around
the current center frequency. In this case the following three steps are used to calculate the
Ref Carrier Freq value and the calculated Ref Carrier Freq is shown on the Ref Carrier Freq
key:
1 Ref Freq 1 = Cntr Freq - [(Total of all Carrier Widths)/2]
2 Ref Freq 2 = Ref Freq 1+ (Total of all Carrier Widths excluding the Ref Carrier Width)
3 Ref Freq = Ref Freq 2 + [0.5 (Carrier Width of Ref Carrier)]
The Ref Carrier Freq can also be entered by the user. This will set the Ref Carrier Freq to
Man and the Center frequency of the N8201A will be calculated using the following three
steps:
1 Cntr Freq 1 = Ref Freq - [0.5 (Carrier Width of Ref Carrier)]
2 Cntr Freq 2 = Cntr Freq 1 - (Total of all Carrier Widths excluding the Ref Carrier Width)
3 Cntr Freq = Cntr Freq 2 + [(Total of all Carrier Widths)/2]
The above algorithms ensure that the carrier is centered on the display.