National Instruments 4-Channel Manual De Usuario
© National Instruments Corporation
17
NI USB-9215 Series User Guide and Specifications
Specifications
The following specifications are typical for the range 0 to 60 °C
unless otherwise noted. All voltages are relative to COM unless otherwise
noted.
unless otherwise noted. All voltages are relative to COM unless otherwise
noted.
Input Characteristics
Number of channels ............................... 4 analog input channels
ADC resolution ...................................... 16 bits
Type of ADC.......................................... Successive approximation
register (SAR)
Max sampling rate
1
NI USB-9215
NI USB-9215A
2
.............................. 100 kS/s (per channel)
NI USB-9215A with BNC
2
............. 100 kS/s (per channel)
Operating voltage range (AI+ to AI–)
Typical ............................................ ±10 V (not software selectable)
Maximum working voltage (signal
+ common mode)
With screw terminal........................ Each channel must remain within
±10.2 V of common
With BNC ....................................... All inputs must remain within
±10.2 V of the average AI– inputs
Overvoltage protection........................... ±30 V
1
Might be system dependent.
Highest Channel Number
In Task
Maximum Sample Rate
0
20 kS/sec
1
10 kS/sec
2
6.67 kS/sec
3
5 kS/sec
2
Full performance requires the use of a USB 2.0 Hi-Speed host controller and USB 2.0 hubs.