Throughput benchmarks, Usage note – Measurement Computing USB-1616FS User Manual
Page 24
USB-1616FS User's Guide
Specifications
24
Throughput benchmarks
Table 3. Throughput specifications
Throughput
(kS/s)
System
240
2.4 GHz P4 running Win XP, Service Pack 2, using an integrated USB Enhanced Host Controller
(EHC) port
240
2.4 GHz P4, Phoenix BIOS, Win XP, Service Pack 2, integrated USB EHC port
130
2 GHz, Xeon, Win XP, Service Pack 2, hyperthreading turned OFF, using an integrated USB EHC port
220
2 GHz, Xeon, Win XP, Service Pack 2, hyperthreading turned ON, using an integrated USB EHC port
260
2.4 GHz, P4 running Win XP, Service Pack 1, using Belkin PCI-bus USB 2.0 card
250
2.4 GHz, P4 running Win XP, Service Pack 1, using StarTec PCI-bus USB 2.0 card
Usage note
The typical limiting factor on throughput is CPU usage. At maximum system throughput, virtually all available
CPU power will be consumed by the USB data transfer. This is an important note since running your system
close to its maximum throughput will certainly limit the amount of CPU power available for running other
concurrent processes (for example, plotting or real-time analysis).
Table 4. Calibrated absolute accuracy specifications
Range
Accuracy (mV)
±10 V
±5.66
±5 V
±2.98
±2 V
±1.31
±1 V
±0.68
Table 5. Accuracy components specifications
– all values are (±)
Range
% of Reading
Gain Error at FS (mV)
Offset (mV)
±10 V
0.04
4.00
1.66
±5 V
0.04
2.00
0.98
±2 V
0.04
0.80
0.51
±1 V
0.04
0.40
0.28
Table 6. Noise performance specifications
Range
Typical Counts
LSBrms
±10 V
10
1.52
±5 V
10
1.52
±2 V
11
1.67
±1 V
14
2.12
Noise distribution is determined by gathering 50 k samples with analog inputs tied to ground (AGND) at the
user connector. Samples are gathered at the maximum specified sampling rate of 50 kS/s.