NISCOPE_ATTR_DDC_ENABLED

NI High-Speed Digitizers Help (NI-SCOPE)

Edition Date: January 2017

Part Number: 370592AB-01

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Specific Attribute

Data
type
Access Applies to Coercion High Level Functions
ViBoolean R/W Channel None None

Description

Enables/disables the DDC block of the digitizer. When the DDC block is disabled, all DDC-related properties are disabled and have no effect on the acquired signal.

Note  This attribute can be used only with high-speed digitizers that support onboard signal processing (OSP). NI-SCOPE returns an error if you use this attribute with a device that does not support OSP. For NI 5620/5621 digitizers, use NISCOPE_ATTR_DDC_ENABLE.

Default Value: VI_FALSE

Defined Values

VI_TRUE

VI_FALSE



Tip  To achieve maximum flatness in the filter response of the device in DDC mode, set the maximum input frequency to full bandwidth (–1). However, keep in mind that this action does not protect against aliasing frequency content of the input signal above (0.5 × Sample Clock Timebase Rate). When using internal clocking, the Sample Clock Timbase Rate is 100 MS/s.

Related Topics

DDC Enabled Overview

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