i423 Product Overview The i423 card plugs into a 4 to 16 slot instruNet i4xx Card Cage, which in turn attaches to a Windows computer 6di Voltage Input Channels 4x Universal Digital I/O (20mA sink, -10V..30V) Connect Directly To Sensors: Voltage, Thermocouple, Thermistor, RTD, Load Cell, Strain Gage, Potentiometer, Current, Resistance, Accelerometer Additional i43x A/D module required to measure voltages Amplifier/Filter outputs made available at Hd44 connector for end user monitoring Product Summary This Amplifier (not A/D) module provides 6 differential voltage input channels (Ch#1/2...#11/12)40 , each of which are independently software programmable with Windows software that support the direct connection to many common sensor types This module does not contain an A/D converter, and therefore internally routes measured voltage to an i43x A/D module anywhere in card cage. At least one i43x must be installed in order to measure a voltage with this module. Each of the 6 differential channels support the direct connection to the following sensor types (click for Wiring Diagram and Setup Instructions): Voltage, Thermocouple, Thermistor, RTD, Load Cell, Strain Gage, Potentiometer, Current, Resistance, Accelerometer Each channel provides several independent analog low pass filter options: 0.006KHz / 2poles, 4KHz / 2poles, or FullBandwidth Voltage input range on each channel is independently software programmable to one of: ±5mV, ±10mV, ±20mV, ±40mV, ±80mV, ±300mV, ±600mV, ±1.2V, ±2.5V, ±5V, 0 to 40mV, 0 to 80mV, 0 to 2.5V, 0 to 5V Each channel provides the following software programmable parameters: A/D Signal-Averaging-Per-Point (0 ... 100mSec) , Sample-Rate (samples-per-second-per-channel) , Analog Low Pass Filter (0.006KHz / 2poles, 4KHz / 2poles, or FullBandwidth)2, Digital IIR Filter (LowPass, HighPass, BandPass, or BandStop) , Voltage Measurement Range (±5mV...±5V) , and Sensor Type Each input channel passes through it's own amplifier with a software selectable voltage gain of 1 or 64, and optional analog low pass filter. After this treatment, these are made available at Hd44 connector pins #17..#22 for purposes of end user monitoring, in addition to possible internal digitizing by A/D. Each channel provides optional digital IIR lowpass, highpass, bandpass and bandstop filters with independent software programmable cut-off frequency, minimum dB stopband attenuation, maximum dB passband attenuation, and filter type (e.g. Elliptic, Chebyshev B, Chebyshev S, and Butterworth). Number of poles/zeros (i.e. "filter order") is programmable between 2 and 32 . Excitation power (+3.3V ±.2V, 2V) or low (e.g.

MODEL i500 ANTI-ALIASING LOW PASS FILTER The i500 anti-aliasing low pass filter provides the following features: 8-Pole analog low pass butterworth filter daughterboard, ideal for anti-aliasing End user installs between 1 and 6 filter daughterboards onto each i423 card, one daughterboard per channel Maximum of 35 filtered channels per system Sold in packages of two filters per product, each is 1.7 x 0.6 inches (4 x 2 cm) i500 analog filter provides extremely low ±0.01dB maximum passband ripple for Fin/Fc ≤ 0.5. If one uses further oversampling, digital filtering and desampling; then passband ripple is ±0.002dB for Fin/Fc ≤ 0.8 due to the accuracy of a 30-pole digital filter. i500 analog filter provides stopband attenuation of ≥ 76dB for Fin/Fc ≥ 3 Signal first passes through i423 signal conditioning amplifier before reaching i500 analog filter; therefore, one can attach directly to the following sensors: Voltage, Thermocouple, Thermistor, RTD, Load Cell, Strain Gage, Current, Resistance, Accelerometer 4 different filter products, each with different cut off frequencies: 380Hz, 1KHz, 3.3KHz, 10KHz. However, further digital processing provides other cutoff frequencies lower than these. For example, with an i500 Fc=1KHz analog filter one can digitize at ANY sample rate less than 2Ks/sec/channel and have a DIGITAL low pass filter provide anti-aliasing.

i511 BNC WIRING BOX The i511 BNC Wiring Box bolts to any i4xx Card that has an Hd44 Connector, and provides the following features: Screw Terminals and BNC connectors to which one can attach external signals to Hd44 connector Enclosure box for end user installed wires and shunt resistors The i511 can NOT do thermocouple measurements. To measure thermocouples one needs an i510. Wires can be routed through both top and bottom windows in the plastic box. The i51x is of clamshell design with identical top and bottom plastic halves that mate via 3 bolts. Two captive 4-40 bolts secure the i51x to any i4xx card that has an Hd44 male connector. The i511 is 8.3 x 2.5 x 13 cm in size (3.3" x 1" x 5.3", d/w/h)

i512 SENSOR WIRING BOX The i512 Sensor Wiring Box bolts to any i4xx Card that has an Hd44 Connector, and provides the following features: Screw Terminals to which one can attach external signals to Hd44 connector Enclosure box for end user installed wires and shunt resistors The i512 can NOT do thermocouple measurements. To measure thermocouples one needs an i510. Wires can be routed through both top and bottom windows in the plastic box. The i51x is of clamshell design with identical top and bottom plastic halves that mate via 3 bolts. Two captive 4-40 bolts secure the i51x to any i4xx card that has an Hd44 male connector. The i512 is 7 x 2.5 x 13 cm in size (2.7" x 1" x 5.3", d/w/h Many i4xx cards provide a 3.3Vref reference voltage that is capable of supplying several hundred milliAmps. This is used to power many different types of sensors. The i512 routes this to the "3.3V" screw terminal in each terminal bank. Also, the i512 has an internal amplifier with a voltage gain of 0.5 that takes this voltage and converts it to a signal that is half the voltage (e.g. 1.65V = 3.3V/2 = vRef/2, 1mA). This can be used in quarter and half bridge measurements where one needs to route half the voltage reference into one of the input terminals (e.g. Vin-). Vref/2 cannot be used to power sensors since it is only capable of suppling 1mA of current.