V243
VXI Signal Conditioner Module

The V243 signal conditioner is a single-width, C-size, register-based, VXIbus module that is designed for thermocouple and other low-bandwidth, low-level signal applications. V243 provides up to 96 differential-input channels with programmable gain per channel and 2-pole, active, low-pass Butterworth filters on each channel.

Filter cutoff frequencies of 10, 50 and 500 Hz plus bypass are software-selectable. Software-selectable pre-filter gains of 1, 10, and 100 are provided for each channel. Both filter cutoff and pre-filter gains are programmable in groups of eight channels. A common, multiplexed, post-filter gain of 1, 2, 5, 10, or 20 is selectable on a channel by channel basis. This allows a programmable gain per channel from 1 to 2000 (±10 V to ±5 mV full scale range).

VXI Signal Conditioner Module: V243

V243 Data Sheet

Supporting Software

Supporting Chassis

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The V243 is designed to work with the V208 16-bit, 100 or 200 KSPS ADC host module that supports up to 2,048 input channels using MUX-bus. Up to 11 V243 modules can be placed in adjacent slots to the right of the V208 to provide a full 1,056 active input channels.

V243 signal conditioner modules combined with the V208 provide a low-noise analog subsystem with built-in, per-channel calibration that is traceable to NIST standards. The V208 includes a precision reference source that is calibrated at the factory, and each V243 includes a precision calibrator. Each input channel can be connected to the calibrator output, ground, or the analog input under software control. In addition, for maximum accuracy, a small correction factor for each calibrator output is stored in a EEPROM within each V243. This correction factor can be applied during the calibration process to obtain maximum accuracy.

The V243 supports both static and dynamic configuration. It may be accessed using A24/A16, D16 data transfers.

VXI Module Features

  • Provides Exceptionally High Accuracy at Low Input Levels
  • Use with V208: 16-Bit, 100 or 200 KSPS ADC Host Module
  • 48 or 96 Channel Input Options
  • Differential Inputs and Programmable Gain per Channel
  • 2-Pole Active Butterworth Low-Pass Filters with
    Programmable Cutoff: 10, 50, 500 Hz, or 5 kHz Bypass
  • Open Thermocouple Detection Option
  • End-to-End Calibration

VXI Module Ordering Information

V243 Products and Part Numbers
96 Channels Low-Level Signal Conditioning V243-ZA21
48 Channels Low-Level Signal Conditioning with
Open Thermocouple Detection
V243-VA41
96 Channels Low-Level Signal Conditioning with
Open Thermocouple Detection
V243-VA91