Command Syntax

:SPRocessN:TEQualizer:LSNR {ON | OFF}

Where N identifies one of up to 64 possible operators {1:64} that can be defined as part of a math function. The operators are numbered in the order that they were originally added to the function.

Query Syntax

:SPRocessN:TEQualizer:LSNR?

Query Response

{0 | 1}

Description

For the TDECQ operator, turns on the Low-SNR mode that allows the operator to operate when large amounts of noise is present. This is equivalent to setting the Low-SNR Measurement Mode setting in the Advanced tab of the TDECQ Reference Equalizer Setup dialog. This capability is activated by the L-RND or L-MFG package licenses.

Starting with FlexDCA revision A.08.30, the default state of this setting is OFF and a new SCPI command was added (:CHANnel:SIRC:INReduction) that turns on or off Intrinsic Noise/Jitter Reduction. This setting is located in FlexDCA's graphical user interface in the Channel System Impulse Response Correction Setup. To open the dialog, click the Configure button that is located in the Channel Setup dialog.

Intrinsic Noise/Jitter Reduction reduces intrinsic noise and intrinsic jitter that are present on a waveform. Noise or jitter that is contributed by the device under test will not be reduced and will be included on the waveform and in any measurements.

For Reference Rx operator, what function do I send this command to?

If the TDECQ equalizer is a secondary function to the Reference Rx operator, address the :SPRocess:TEQualizer:LSNR command to the Reference Rx function as identified in the following Reference Rx Setup dialog's operator diagram. In the following figure, this would be Function 2 and the command would be:

:SPRocess2:TEQualizer:LSNR