LabJackTSeriesDriver#

class LabJackTSeriesDriver(device_id: str, stream_buffer_bytes: int = 0)[source]#

Bases: DAQDriverBase

LabJack T-series DAQ driver (T4/T7/T8 via the LJM library).

Construct the driver.

Parameters:

device_id – Device serial number, or “ANY” for the first device found.
stream_buffer_bytes – Device-side stream buffer size, always written when AI hardware timing is configured so no value carries over from an earlier session. 0 selects the device’s own default. Must be a power of 2 and the max is 262144. Setting this prevents the device from dropping scans at high sample rates, which LJM reports as -9999 sample values.

Attributes

`ai_channels`	Frozen snapshot of configured AI channels, keyed by alias.
`ai_hw_timing_config`
`ao_channels`	Frozen snapshot of configured AO channels, keyed by alias.
`ao_hw_timing_config`
`channels`	Frozen snapshot of all configured AI/AO/DI/DO channels (excludes relays).
`di_channels`	Frozen snapshot of configured DI channels, keyed by alias.
`di_hw_timing_config`
`do_channels`	Frozen snapshot of configured DO channels, keyed by alias.
`do_hw_timing_config`
`relay_channels`	Frozen snapshot of configured relay channels, keyed by alias.
`points_in_buffer`

Methods

`close`	Disconnect from LabJack device.
`close_relay`	Close the relay (connect the circuit).
`configure_ai_channel`	Deprecated: use `configure_ai_voltage_channel`.
`configure_ai_current_channel`	Register an AI current channel.
`configure_ai_hw_timing`	Configure hardware timing for the specified channels.
`configure_ai_thermocouple_channel`	Configure a thermocouple ai channel; volts convert to temperature in the channel's unit on read.
`configure_ai_voltage_channel`	Configure a voltage ai channel on the LabJack device.
`configure_ao_channel`	Deprecated: use `configure_ao_voltage_channel`.
`configure_ao_current_channel`	Register an AO current channel.
`configure_ao_voltage_channel`	Configure a voltage AO channel on the LabJack device.
`configure_di_line_channel`	Parse, program, and register a DI line channel.
`configure_di_port_channel`	Parse, program, and register a DI port channel.
`configure_do_line_channel`	Parse, program, and register a DO line channel.
`configure_do_port_channel`	Parse, program, and register a DO port channel.
`define_relay_channel`	Build a `RelayChannel` for `physical_channel` (e.g. `"3101"` = slot 3 / channel 101).
`fetch_analog`	Block until `samples_per_channel` new AI samples are available, then return them.
`get_actual_sample_rate`	Actual hardware sample rate achieved after `start()`.
`get_info`	Get the LabJack device info.
`open`	Connect to LabJack device.
`open_relay`	Open the relay (disconnect the circuit).
`read_analog`	Read from analog input channels.
`read_digital_line`	Sample a single DI line.
`read_digital_port`	Sample a multi-line DI port.
`start`	Start the DAQ device for hw timed data acquisition.
`stop`	Stop the DAQ device.
`write_analog_value`	Write `value` to AO `channel`.
`write_digital_line`	Drive a single DO line.
`write_digital_port`	Drive a multi-line DO port.