Difference between revisions of "20.309:DAQ System"
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| − | Each lab PC is equipped with a National Instruments | + | Each lab PC is equipped with a National Instruments USB-6212 or USB-6341 data acquisition (DAQ) card. |
| − | The USB-6212 has 16, 16-bit analog input channels which can, in sum total, accomplish 400 thousand samples per second (400kS/s). That is, if there are two channels, each one will be alternately sampled, and EACH sampled at 200kS/s. A multiplexer sequentially selects from among the 16 single-ended and 8 differential input signals. The card also supports two 16 bit analog output channels with an update rate of 250 kS/s and an output range of +/- 10 V and up to +/- 2 mA. | + | The USB-6212<ref>[http://sine.ni.com/nips/cds/view/p/lang/en/nid/207096 Datasheet for the USB-6212]</ref> has 16, 16-bit analog input channels which can, in sum total, accomplish 400 thousand samples per second (400kS/s). That is, if there are two channels, each one will be alternately sampled, and EACH sampled at 200kS/s. A multiplexer sequentially selects from among the 16 single-ended and 8 differential input signals. The card also supports two 16 bit analog output channels with an update rate of 250 kS/s and an output range of +/-10 V and up to +/-2 mA. |
| − | The USB-6212 also has 32 digital input/output channels and a digital ground. A 50 | + | The USB-6212 also has 32 digital input/output channels and a digital ground. A 50 kΩ pull-down resistor is typically used in series with connections to these channels. |
| − | The USB-6341 is s little more powerful. It has 16, 16-bit analog input channels which can, in sum total, accomplish 500 thousand samples per second (500kS/s). Again, a multiplexer sequentially selects from among the 16 single-ended and 8 differential input signals. The card also supports two 16 bit analog output channels but they have an update rate of 900 kS/s and an output range of +/- 10 V and up to +/- 2 mA. | + | The USB-6341<ref>[http://sine.ni.com/nips/cds/view/p/lang/en/nid/209069 Datasheet for the USB-6341]</ref> is s little more powerful. It has 16, 16-bit analog input channels which can, in sum total, accomplish 500 thousand samples per second (500kS/s). Again, a multiplexer sequentially selects from among the 16 single-ended and 8 differential input signals. The card also supports two 16 bit analog output channels but they have an update rate of 900 kS/s and an output range of +/-10 V and up to +/-2 mA. |
Finally, the USB-6341 has 24 digital input/output channels and a digital ground, as well as 4, 100 MHz counter/timers. | Finally, the USB-6341 has 24 digital input/output channels and a digital ground, as well as 4, 100 MHz counter/timers. | ||
Latest revision as of 16:19, 17 January 2017
Each lab PC is equipped with a National Instruments USB-6212 or USB-6341 data acquisition (DAQ) card.
The USB-6212[1] has 16, 16-bit analog input channels which can, in sum total, accomplish 400 thousand samples per second (400kS/s). That is, if there are two channels, each one will be alternately sampled, and EACH sampled at 200kS/s. A multiplexer sequentially selects from among the 16 single-ended and 8 differential input signals. The card also supports two 16 bit analog output channels with an update rate of 250 kS/s and an output range of +/-10 V and up to +/-2 mA.
The USB-6212 also has 32 digital input/output channels and a digital ground. A 50 kΩ pull-down resistor is typically used in series with connections to these channels.
The USB-6341[2] is s little more powerful. It has 16, 16-bit analog input channels which can, in sum total, accomplish 500 thousand samples per second (500kS/s). Again, a multiplexer sequentially selects from among the 16 single-ended and 8 differential input signals. The card also supports two 16 bit analog output channels but they have an update rate of 900 kS/s and an output range of +/-10 V and up to +/-2 mA.
Finally, the USB-6341 has 24 digital input/output channels and a digital ground, as well as 4, 100 MHz counter/timers.
Cite error: <ref> tags exist, but no <references/> tag was found
