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The instruNet i4xx card cage is available with 4, 8, 12 or 16 slots. The first slot is used to house the i41x interface card and the 2nd slot is used for the i43x a/d measurement card. The remaining slots can be populated with i423 cards. The i423 provides 6 signal conditioning amplifiers, one for each channel. These can measure voltages, and can also attach directly to common sensors such as thermocouples and strain gauges. Each channel on the i423 includes a socket that attaches to a tiny optional 4 x 2 cm daughterboard. This is held in place with one bolt and is installed by the end user.
There are four different i500 filter daughters to choose from, each with a different cutoff frequency (380Hz, 1kHz, 3.3kHz, 10kHz - Please specify required type on any order).
Yet optional further digital low pass filtering provides lower cutoff frequencies. For example, one can digitize at 100s/sec/channel with the Fc=1KHz i500 analog filter and digitally filter at Fc=38.5Hz to get anti-aliased 100s/sec/ch data. Internally the system would digitize at ≥ 6Ks/sec/ch and do digital processing to calculate very accurate 100s/sec/ch data. This digital processing is done in the background and the end user only needs to set one software parameter called "Auto Afs" to enable it.
Specification | i500 ANALOG Filter | DIGITAL Filter |
Type | 8-Pole Butterworth | ≥ 30-Pole IIR Butterworth |
Cut-off Freq. | 380, 1K, 3.3K, or 10KHz | 0.01 Hz to 10KHz |
Fc Freq Accuracy | ±2% | ±0.01% |
Fc Freq Stability | ±0.01%/°C | n/a |
Stopband Attn | see table | see table |
Passband Ripple | see table | see table |
Max Noise | -90 dB | -120 dB |
Passes DC | yes | yes |
DC Voltage Gain | ±0.02% (±0.002 dB) | ±0.02% (±0.002 dB) |
Power Consumed | 8mA @ -12V, 8mA @ +12V | n/a |
Design | Op Amp (not switched IC) | Digital |
Size | 1.7x0.6 inches (4.3x1.6cm) | n/a |
The instruNet i4xx card cage is available with 4, 8, 12 or 16 slots. The first slot is used to house the i41x interface card and the 2nd slot is used for the i43x a/d measurement card. The remaining slots can be populated with i423 cards. The i423 provides 6 signal conditioning amplifiers, one for each channel. These can measure voltages, and can also attach directly to common sensors such as thermocouples and strain gauges. Each channel on the i423 includes a socket that attaches to a tiny optional 4 x 2 cm daughterboard. This is held in place with one bolt and is installed by the end user.
There are four different i500 filter daughters to choose from, each with a different cutoff frequency (380Hz, 1kHz, 3.3kHz, 10kHz - Please specify required type on any order).
Yet optional further digital low pass filtering provides lower cutoff frequencies. For example, one can digitize at 100s/sec/channel with the Fc=1KHz i500 analog filter and digitally filter at Fc=38.5Hz to get anti-aliased 100s/sec/ch data. Internally the system would digitize at ≥ 6Ks/sec/ch and do digital processing to calculate very accurate 100s/sec/ch data. This digital processing is done in the background and the end user only needs to set one software parameter called "Auto Afs" to enable it.
Specification | i500 ANALOG Filter | DIGITAL Filter |
Type | 8-Pole Butterworth | ≥ 30-Pole IIR Butterworth |
Cut-off Freq. | 380, 1K, 3.3K, or 10KHz | 0.01 Hz to 10KHz |
Fc Freq Accuracy | ±2% | ±0.01% |
Fc Freq Stability | ±0.01%/°C | n/a |
Stopband Attn | see table | see table |
Passband Ripple | see table | see table |
Max Noise | -90 dB | -120 dB |
Passes DC | yes | yes |
DC Voltage Gain | ±0.02% (±0.002 dB) | ±0.02% (±0.002 dB) |
Power Consumed | 8mA @ -12V, 8mA @ +12V | n/a |
Design | Op Amp (not switched IC) | Digital |
Size | 1.7x0.6 inches (4.3x1.6cm) | n/a |