If Path Auto - Agilent Technologies X Series Manual

Mode Setup
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IF Path Auto

Automatically selects between the IF Paths based on the current measurements Digital IF Bandwidth
setting.
When IF Path Auto is set to ON and the measurement tries to set a Digital IF Bandwidth between 10 and
25 MHz, the IF Path parameter automatically switches from 10 MHz to 25 MHz. When the measurement
sets the Digital IF Bandwidth back to a value narrower than 10 MHz, then the IF Path automatically
switches from 25 MHz to 10 MHz. This is the same for the other paths as well. If the instrument has
options B25 and B1X installed but not B40, when the IF Path Auto is set ON and the current
measurement sets the IF Bandwidth from 14 MHz to 26 MHz, the IF Path automatically switches from
25 MHz to 140 MHz since the 40 MHz path is not available.
When reducing the Digital IF Bandwidth, the selected IF Path is the narrowest possible path applicable.
For example, an instrument with B25, B40 and B1X installed and the user currently has IF Path Auto set
to ON and the Digital IF Bandwidth is 50 MHz, the IF Path selection will be 140 MHz. If the bandwidth
decreases and the value is 40 MHz or narrower (but above 25 MHz), the IF Path will automatically
change to 40 MHz. Similarly, for bandwidths equal to or narrower than 25 MHz (but above 10 MHz), the
25 MHz path is selected. For bandwidths equal to or narrower than 10 MHz, the 10 MHz path is selected.
These rules apply even for DIF configurations of Swept DIF + WBDIF.
Key Path
Mode
Remote Command
Example
Notes
Dependencies
Preset
State Saved
Range
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518
Currently selected IF Path selection.
A.04.00
Mode Setup, IF Path
BASIC
[:SENSe]:IFPath:AUTO ON|OFF|1|0
[:SENSe]:IFPath:AUTO?
IFP:AUTO ON
IFP:AUTO?
You must be in the IQ Analyzer (Basic) mode to use this command. Use
INSTrument:SELect to set the mode.
This feature automatically selects between the IF Paths available. If option
B25 or B40, or B1X are not installed, it will always select 10 MHz.
ON
Saved in instrument state.
On|Off
A.04.00
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