Advantech PCIE-1803, Руководство пользователя

Страница: 32 / 42

PCIE-1803 User Manual 26
A.1 Analog Input
A.1.1 Functions
A.1.2 ADC Modulator Oversample Rate
A.1.3 Maximum Operating Voltage
* Voltages with respect to chassis ground.
Channels
8, simultaneous sampling, can be enabled/disabled each channel
independently by software
Input configuration
Differential/Pseudo-differential (50 Ω between negative input and
chassis ground), software selectable per channel
Input coupling AC/DC, software selectable per channel
Input range ±10 V/±5 V/±2 V/ ±1 V, software selectable per channel
A/D converter (ADC)
resolution
24 bits
A/D converter (ADC)
type
Delta-sigma
Sample rates (fs)
Range
1 kS/s to 128 kS/s (AI sample rate setting must be the same as AO
update rate)
Resolution
68.21 μS/s (1 kS/s to 8 kS/s)
136.42 μS/s (8 kS/s to 16 kS/s)
272.84 μS/s (16 kS/s to 32 kS/s)
545.69 μS/s (32 kS/s to 64 kS/s)
1.09 mS/s (64 kS/s to 128 kS/s)
Trigger mode Start trigger, delay to start trigger, stop trigger, delay to stop trigger
Delay range 1 ~ 16777215 (224 - 1) samples
Input FIFO size 4,095 samples shared by all enabled channels
Data transfers DMA, programmed I/O
Sample Rate (fs) Oversample Rate
1 kS/s < fs < 8 kS/s 128 fs
8 kS/s < fs ≤ 16 kS/s 64 fs
16 kS/s < fs ≤ 32 kS/s 32 fs
32 kS/s < fs ≤ 64 kS/s 64 fs
64 kS/s < fs ≤ 128 kS/s 32 fs
IEPE
Input
Coupling Input
Configuration
Positive Terminal (+)* Negative Terminal (-)*
Disabled AC Differential ±22 V ±22 V
Disabled AC Pseudo-differential ±19 V ±9 V
Disabled DC Differential ±12 V ±12 V
Disabled DC Pseudo-differential ±12 V ±9 V
Enabled AC Pseudo-differential 0 ~ +24 V 0 ~ +1 V