©
National Instruments Corporation
21
NI USB-6008/6009 User Guide and Specifications
Timing accuracy..................................... 100 ppm of actual sample rate
Input range
Single-ended
................................... ±
10 V
Differential
...................................... ±
20 V
1
,
±
10 V,
±
5 V,
±
4 V,
±
2.5 V,
±
2 V,
±
1.25 V,
±
1 V
Working voltage
..................................... ±
10 V
Input impedance ..................................... 144 k
Ω
Overvoltage protection
........................... ±
35
Trigger source ........................................ Software or external digital
trigger
System noise
2
Single-ended
±
10 V range ............................. 5 mVrms
Differential
±
20 V range ............................. 5 mVrms
±
1 V range ............................... 0.5 mVrms
Absolute accuracy at full scale, single ended
Absolute accuracy at full scale, differential
3
1
±
20 V means that |AI
+
– (AI–)| <= 20V. However, AI
+
and AI– must both be within
±
10V of GND. Refer to the
for more information.
2
System noise measured at maximum sample rate.
Range
Typical at 25 °C
(mV)
Maximum over Temperature
(mV)
±
10
14.7
138
3
Input voltages may not exceed the working voltage range.
Range
Typical at 25 °C
(mV)
Maximum over Temperature
(mV)
±
20
14.7
138
±
10
7.73
84.8
±
5
4.28
58.4
±
4
3.59
53.1
±
2.5
2.56
45.1
