CyberResearch UMDAS 0802DA, Руководство пользователя, Страница: 29 / 42

U
MDAS 0802DA
User's Guide
S
pecifications
Maximum throughput scanning to PC memory is machine dependent. The rates specified are for
Windows XP only. Maximum rates on operating systems that predate XP may be less and must
be determined through testing on your machine
Note 2:
Note 3:
Note 4:
The ADS7871 converter only returns 13-bits (0 to 8192 codes) in single-ended mode.
Extrapolating the long term drift accuracy specifications will provide the approximate long term
drift of the
UMDAS 0802DA
intermediate input ranges.
Table 4-2. Accuracy, differential mode
Range Absolute Accuracy 25°C (±mV) Absolute Accuracy 0 to 50°C (±mV)
±20 V 10.98 49.08
±10 V 7.32 33.42
±5 V 3.66 20.76
±4 V 2.92 19.02
±2.5 V 1.83 14.97
±2 V 1.70 14.29
±1.25 V 1.21 12.18
±1 V 1.09 11.63
Table 4-3. Accuracy, single-ended mode
Range Absolute Accuracy 25°C (±mV) Absolute Accuracy 0 to 50°C (±mV)
±10 V 10.98 49.08
Table 4-4. Noise performance, differential mode
Range Typical counts Least significant bit
root mean square
(LSB
rms)
±20 V 8 1.21
±10 V 8 1.21
±5 V 9 1.36
±4 V 10 1.51
±2.5 V 12 1.81
±2 V 14 2.12
±1.25 V 18 2.72
±1 V 22 3.33
Table 4-5. Noise performance, single-ended mode
Range Typical Counts LSB
rms
±10 V 8.0 1.21
4-2