Series:Control System

  Product Description

  SCXI-1140 is a differential amplifier module designed specifically for signal conditioning in data acquisition systems.

  feature

  8)Simultaneously sampling input channels

  ±30 V maximum overvoltage protection,powered on

  Connection of external sampling and holding timing signals

  The National Instruments SCXI-1140 is an 8-channel synchronous sampling differential amplifier module.Each channel contains a high input impedance instrument amplifier,whose gain can be selected by a switch,followed by a tracking and holding(T/H)amplifier.The T/H amplifier tracks simultaneously,which is very useful for maintaining the phase relationship between channels.Users can run T/H output on eight different input channels of the DAQ device,or they can multiplex the output of one or more modules into one channel of the DAQ device.

  The SCXI-1600 USB data acquisition module can be used in conjunction with this module to create a fully plug and play USB data acquisition system.A specific system requires an SCXI chassis to accommodate the SCXI-1600 and various SCXI modules.The SCXI-1000 chassis can accommodate up to 4 modules,while the SCXI-1001 can accommodate up to 12 modules.

  The NI SCXI-1140(part number:776572-40)is a synchronous sampling differential amplifier module.This module has 8 channels and external timing signal connections.This module is compatible with NI-DAQmx measurement service software.Therefore,the configuration remains simple and clear.This module can be used with NB series data acquisition boards with LabVIEW for Macintosh.This device can also be used with NI-DAQ software for Macintosh.

  This device has a voltage of 15 V/μThe sec channel outputs a slew rate and a frequency spectrum density of 12 nv/√Hz input noise,as well as a frequency spectrum density of 75 nv/√Hz output noise.The NI SCXI-1140 can operate at a maximum output voltage of±10 V.The NI SCXI-1140 is equipped with three dedicated jumpers:W11,W13,and W14,for communication between the SCXIbus and the data acquisition board.The SCXI-1140 differential amplifier module is equipped with a DIP switch programmable instrument amplifier,buffer tracking and holding amplifier,multiplexer,and output switch.

  The input protection of National Instruments SCXI-1140 has a series connected 1 kΩresistor.Each input terminal of this module is protected.SCXI-1140 has four basic types of scanning modes,such as single module parallel and multiplexing scanning.This module has two registers.The ID register is a four byte register with read-only functionality.On the other hand,the configuration register is a 32-bit write only register.There is also a configuration register that users cannot access.It is a 32-bit register designed to handle control and function related tasks of SCXI-1140.

  application area

  The SCXI-1140 NI differential amplifier module is commonly used in industries such as research,testing,and measurement,industrial automation,and scientific instruments.