Elektra CPU User Manual V1.00
Page 78
20. DATA ACQUISITION SPECIFICATIONS
These specifications apply to units with Data Acquisition Only
Analog Inputs
No. of inputs
8 differential or 16 single-ended (user selectable)
A/D resolution
16 bits (1/65,536 of full scale)
Input ranges
Bipolar:
±
10V,
±
5V,
±
2.5V,
±
1.25V
Unipolar:
0-8.3V, 0-5V, 0-2.5V
Input bias current
50nA max
Maximum input voltage
±
10V for linear operation
Overvoltage protection
±
35V on any analog input without damage
Nonlinearity
±
3LSB, no missing codes
Drift 10PPM/
o
C typical
Conversion rate
100,000 samples per second max
Conversion trigger
software trigger, internal pacer clock, or external TTL signal
FIFO
48 samples; programmable interrupt threshold
Analog Outputs
No. of outputs
4
D/A resolution
12 bits (1/4096 of full scale)
Output ranges
Unipolar: 0-10V or user-programmable
Bipolar:
±
10V or user-programmable
Output current
±
5mA max per channel
Settling time
4
µ
S max to
±
1/2 LSB
Relative accuracy
±
1 LSB
Nonlinearity
±
1 LSB, monotonic
Digital I/O
No. of lines
24
Compatibility
3.3V and 5V logic compatible
Input voltage
Logic 0: -0.5V min, 0.8V max; Logic 1: 2.0V min, 5.5V max
Input current
±
1
µ
A max
Output voltage
Logic 0: 0.0V min, 0.4V max; Logic 1: 2.4V min, 3.3V max
Output current
Logic 0: 12mA max; Logic 1: -8mA max
I/O capacitance
10pF max
Counter/Timers
A/D pacer clock
24-bit down counter
Pacer clock source
10MHz, 1MHz, or external signal
General purpose
16-bit down counter
GP clock source
10MHz, 100KHz, or external signal
