Digital Output Characteristics

The AL-1032 supports a variety of ways to configure a system that can output a digital state or PWM output to a device under test. The following sections outline what configurations are available and what control modes are compatible with each configuration.

Ch 1..32	Supported	State Control Types
BUS+/-, Open	Yes	Internal, External
BUS+, BUS-	Yes	Internal, External

Warning

Enabling two output sources simultaneously may result in damage to the module.

Module DO Characteristics

The following specifications apply to all DO configurations.

Specifications

Maximum current	1A
Rise/fall time	<1 ms
Latency	100 ns
Pull up/down configuration	None by default. See External Bus Characteristics for more details.
Generation details
Generation type	Single-Point
Timing type	On Demand
Update Rate	Determined by system configuration and the NI-SLSC driver
PWM output characteristics
Period step size	10 ns
Maximum period duration	~42.95 seconds
Active time step size	10 ns
Phase offset step size	.8382e-9°
Dead time step size	10 ns
Enable trigger details
Trigger type(s)	Software, External digital output (See RTI Characteristics for more details.)

BUS+/-, Open (Internal State)

The module controls a voltage from AUX1, AUX2, EXT1, or EXT2. When the state is high, the source is connected. When low, the source is disconnected.

SLSC Configuration Properties

Name	Resource Type	DataType	Description	Valid Values
Discrete
AL.RTI_Mode	Physical Channel	Enum	RTI DIO routing mode	One of: (0, DIN_to_RTI), (Register_Mode)
PWM
AL.RTI_Mode	Physical Channel	Enum	RTI DIO routing mode	One of: (0, DIN_to_RTI), (Register_Mode)
AL.PWM_Enable	Physical Channel	Bool	Toggle PWM Output	False, True
AL.PWM_MUX	Physical Channel	Bool	Set the destination for the PWM signal. False = Output on EXT, True = Output on AUX.	False, True
AL.PWM_PPC	Physical Channel	UInt32	Set Push-Pull Configuration for PWM Output. 0 = Push/Pull, 1 = High Side, 2 = Low Side.	1, 2
AL.RTI_Mode	Physical Channel	Enum	RTI DIO routing mode	One of: (0, DIN_to_RTI), (Register_Mode)

SLSC Interface Properties

Name	Resource Type	DataType	Description	Valid Values
Discrete
AL.AUX1	Physical Channel	Bool	Toggle Discrete AUX1/Open	[False, True]
AL.AUX2	Physical Channel	Bool	Toggle Discrete AUX2/Open	[False, True]
AL.EXT1	Physical Channel	Bool	Toggle Discrete EXT1/Open	[False, True]
AL.EXT2	Physical Channel	Bool	Toggle Discrete EXT2/Open	[False, True]
PWM
AL.PWM_Period	Physical Channel	UInt32	Set period time for PWM generator. The period time is set in multiples of 10 ns. The minimum value that can be set is 2, this will set the period time to 20 ns (50 MHz).	2..4294967295
AL.PWM_DutyCycle	Physical Channel	UInt32	Set duty cycle for PWM generator. The duty cycle is set in multiples of 10 ns.	1..4294967295
AL.PWM_PhaseOffset	Physical Channel	UInt32	Set phase offset for PWM generator. To set phase offset x [degrees] use this formula to calculate the phase offset value: PH = (x/360) * PER	0..4294967295
AL.PWM_DeadTime	Physical Channel	UInt32	Set dead time for PWM generator. To dead time is set in multiples of 10ns.	0..255

BUS+/-, Open (External State)

An external device controls a voltage from AUX1, AUX2, EXT1, or EXT2. When the state is high, the source is connected. When low, the source is disconnected.

SLSC Configuration Properties

Name	Resource Type	DataType	Description	Valid Values
AL.DIR_Bank<n>	Device	Bool	XJ2: XIO CH<n> direction	False (Input)
AL.RTI_Mode	Physical Channel	Enum	RTI DIO routing mode	One of: (2, RTI_to_EXT1), (3, RTI_to_EXT2), (5, RTI_to_AUX1), (6, RTI_to_AUX2)

BUS+, BUS- (Internal State)

The module controls a voltage from AUX1 and AUX2 or EXT1 and EXT2. When the state is high, the AUX1 or EXT1 is connected. When low, AUX2 or EXT2 is connected.

SLSC Configuration Properties

Name	Resource Type	DataType	Description	Valid Values
Discrete
AL.RTI_Mode	Physical Channel	Enum	RTI DIO routing mode	One of: (0, DIN_to_RTI), (Register_Mode)
PWM
AL.RTI_Mode	Physical Channel	Enum	RTI DIO routing mode	One of: (0, DIN_to_RTI), (Register_Mode)
AL.PWM_Enable	Physical Channel	Bool	Toggle PWM Output	False, True
AL.PWM_MUX	Physical Channel	Bool	Set the destination for the PWM signal. False = Output on EXT, True = Output on AUX.	False, True
AL.PWM_PPC	Physical Channel	UInt32	Set Push-Pull Configuration for PWM Output. 0 = Push/Pull, 1 = High Side, 2 = Low Side.	0
AL.RTI_Mode	Physical Channel	Enum	RTI DIO routing mode	One of: (0, DIN_to_RTI), (Register_Mode)

SLSC Interface Properties

Name	Resource Type	DataType	Description	Valid Values
Discrete
AL.AUX1	Physical Channel	Bool	Toggle Discrete AUX1/Open	[False, True]
AL.AUX2	Physical Channel	Bool	Toggle Discrete AUX2/Open	[False, True]
AL.EXT1	Physical Channel	Bool	Toggle Discrete EXT1/Open	[False, True]
AL.EXT2	Physical Channel	Bool	Toggle Discrete EXT2/Open	[False, True]
PWM
AL.PWM_Period	Physical Channel	UInt32	Set period time for PWM generator. The period time is set in multiples of 10 ns. The minimum value that can be set is 2, this will set the period time to 20 ns (50 MHz).	2..4294967295
AL.PWM_DutyCycle	Physical Channel	UInt32	Set duty cycle for PWM generator. The duty cycle is set in multiples of 10 ns.	1..4294967295
AL.PWM_PhaseOffset	Physical Channel	UInt32	Set phase offset for PWM generator. To set phase offset x [degrees] use this formula to calculate the phase offset value: PH = (x/360) * PER	0..4294967295
AL.PWM_DeadTime	Physical Channel	UInt32	Set dead time for PWM generator. To dead time is set in multiples of 10ns.	0..255

BUS+, BUS- (External State)

An external device controls a voltage from AUX1 and AUX2 or EXT1 and EXT2. When the state is high, the AUX1 or EXT1 is connected. When low, AUX2 or EXT2 is connected.

SLSC Configuration Properties

Name	Resource Type	DataType	Description	Valid Values
AL.DIR_Bank<n>	Device	Bool	XJ2: XIO CH<n> direction	False (Input)
AL.RTI_Mode	Physical Channel	Enum	RTI DIO routing mode	One of: (4, RTI_to_EXT_PushPull), (7, RTI_to_AUX_PushPull)