Rohde & Schwarz R&S FSP Series, Operating Manual

Page: 171 / 796

Operating Manual 1164.4556.12 - 06 4.99
R&S FSP Instrument Functions
Analyzer Mode
The weighting filter parameters can be manually controlled for NORMAL ACP, if no
predefined standard is selected (standard NONE or USER). The softkey is not avail-
able for FAST ACP.
The dialog box contains the following paramaters:
• TX CH: Toggles the weighting filter state. If active, the channel is check marked.
• Alpha: Specifies the roll-off factor of the weighting filter. The default value is 0.22.
Possible range is from 0 to 1.
Most of the standards require identical settings for all channels. It is sufficient to con-
figure the first table entry (TX1) in that case. All the subsequent channels are
adjusted to the same value.
The filter settings can be set separately by overwriting the table from top to bottom
(TX1 -> TX2 -> TX3 -> (...) -> TX12 -> ADJ -> ALT1 -> (...) -> ALT12
To adjust the weigthing filter settings of a predefined standard:
• Select the predefine standard ( CP/ACP STANDARD )
• Use SAVE AS USER STD to create an own user standard
• Select this user standard ( CP/ACP STANDARD USER ) with the specified name
• Change the weigthing filter configuration
• Save the user standard again with SAVE AS USER STD
Note that in version 4.4x, it is possible to specifiy separate filter configuration for all
the TX channels and all the ADJ channels. As of firmware version 4.5x, the separate
weigthing filter configurations are supported for the Multicarrier ACP measurement
as well.
Remote command:
see
“SENSe:POWer Subsystem” on page 6.190
ADJ REFLVL
OFFSET
Defines an additional level offset to the measured mean power to be taken into
account for the analyzer's reference level setting.
It is a modification to the ADJUST REF LEVEL function specific to user standards.
Proceed as follows to adjust the offset value for a predefined standard:
➢
Select a predefine standard with the CP/ACP STANDARD
➢
Create a new user standards with SAVE AS USER STD