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NI DIGITAL PATTERN DRIVER Level Configuration Attributes
- NIDIGITAL_ATTRIBUTE_VIL
- NIDIGITAL_ATTRIBUTE_VIH
- NIDIGITAL_ATTRIBUTE_VOL
- NIDIGITAL_ATTRIBUTE_VOH
- NIDIGITAL_ATTRIBUTE_VTERM
- NIDIGITAL_ATTRIBUTE_TERMINATION_MODE
- NIDIGITAL_ATTRIBUTE_ACTIVE_LOAD_IOL
- NIDIGITAL_ATTRIBUTE_ACTIVE_LOAD_IOH
- NIDIGITAL_ATTRIBUTE_ACTIVE_LOAD_VCOM
Numeric Value | 1150007 |
---|---|
Datatype | ViReal64 |
Access | R/W |
Applies to | Channel |
Coercion | Yes |
High-level Functions | niDigital_ConfigureVoltageLevels |
Specifies the voltage that the digital pattern instrument will apply to the input of the DUT when the test instrument drives a logic low (0).
Numeric Value | 1150008 |
---|---|
Datatype | ViReal64 |
Access | R/W |
Applies to | Channel |
Coercion | Yes |
High-level Functions | niDigital_ConfigureVoltageLevels |
Specifies the voltage that the digital pattern instrument will apply to the input of the DUT when the test instrument drives a logic high (1).
Numeric Value | 1150009 |
---|---|
Datatype | ViReal64 |
Access | R/W |
Applies to | Channel |
Coercion | Yes |
High-level Functions | niDigital_ConfigureVoltageLevels |
Specifies the output voltage from the DUT below which the comparator on the digital pattern test instrument interprets a logic low (L).
Numeric Value | 1150010 |
---|---|
Datatype | ViReal64 |
Access | R/W |
Applies to | Channel |
Coercion | Yes |
High-level Functions | niDigital_ConfigureVoltageLevels |
Specifies the output voltage from the DUT above which the comparator on the digital pattern test instrument interprets a logic high (H).
Numeric Value | 1150011 |
---|---|
Datatype | ViReal64 |
Access | R/W |
Applies to | Channel |
Coercion | Yes |
High-level Functions | niDigital_ConfigureVoltageLevels |
Specifies the termination voltage the digital pattern instrument applies during non-drive cycles when the termination mode is set to V term. The instrument applies the termination voltage through a 50 Ω parallel termination resistance.
Numeric Value | 1150006 |
---|---|
Datatype | ViInt32 |
Access | R/W |
Applies to | Channel |
Coercion | None |
High-level Functions | niDigital_ConfigureTerminationMode |
Specifies the behavior of the pin during non-drive cycles.
Defined Values: | |
---|---|
NIDIGITAL_VAL_ACTIVE_LOAD (1200) | Specifies that, for non-drive pin states (L, H, X, V, M, E), the active load is connected and the instrument sources or sinks a defined amount of current to load the DUT. The amount of current sourced by the instrument and therefore sunk by the DUT is specified by IOL. The amount of current sunk by the instrument and therefore sourced by the DUT is specified by IOH. The voltage at which the instrument changes between sourcing and sinking is specified by VCOM. |
NIDIGITAL_VAL_VTERM (1201) | Specifies that, for non-drive pin states (L, H, X, V, M, E), the pin driver terminates the pin to the configured VTERM voltage through a 50 Ω impedance. VTERM is adjustable to allow for the pin to terminate at a set level. This is useful for instruments that might operate incorrectly if an instrument pin is unterminated and is allowed to float to any voltage level within the instrument voltage range. To address this issue, enable VTERM by configuring the VTERM pin level to the desired voltage and selecting the VTERM termination mode. Setting VTERM to 0 V and selecting the VTERM termination mode has the effect of connecting a 50 Ω termination to ground, which provides an effective 50 Ω impedance for the pin. This can be useful for improving signal integrity of certain DUTs by reducing reflections while the DUT drives the pin. |
NIDIGITAL_VAL_HIGH_Z (1202) | Specifies that, for non-drive pin states (L, H, X, V, M, E), the pin driver is put in a high-impedance state and the active load is disabled. |
Numeric Value | 1150012 |
---|---|
Datatype | ViReal64 |
Access | R/W |
Applies to | Channel |
Coercion | Yes |
High-level Functions | niDigital_ConfigureActiveLoadLevels |
Specifies the current that the DUT sinks from the active load while outputting a voltage below VCOM.
Numeric Value | 1150013 |
---|---|
Datatype | ViReal64 |
Access | R/W |
Applies to | Channel |
Coercion | Yes |
High-level Functions | niDigital_ConfigureActiveLoadLevels |
Specifies the current that the DUT sources to the active load while outputting a voltage above VCOM.
Numeric Value | 1150014 |
---|---|
Datatype | ViReal64 |
Access | R/W |
Applies to | Channel |
Coercion | Yes |
High-level Functions | niDigital_ConfigureActiveLoadLevels |
Specifies the voltage level at which the active load circuit switches between sourcing current and sinking current.
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