Measurement Computing USB-1608FS-Plus, User Manual, Page: 20 / 24

USB-1608FS-Plus User's Guide Specifications
20
Counter section
Table 8. Counter specifications
Parameter Specification
Pin name CTR
Counter type Event counter
Number of channels 1
Input type
Schmitt trigger, 47 kΩ pull-down to ground
Input source CTR screw terminal
Resolution 32 bits
Schmitt trigger hysteresis 1.01 V typ
0.6 V min
1.5 V max
Input high voltage threshold 2.43 V typ
1.9 V min
3.1V max
Input high voltage limit 5.5 V absolute max
Input low voltage threshold 1.42 V typ
1.0 V min
2.0 V max
Input low voltage limit -0.5 V absolute min
0 V recommended min
Input frequency 1 MHz max
High pulse width 500 ns min
Low pulse width 500 ns min
Memory
Table 9. Memory specifications
Parameter Specification
Data FIFO 32,768 samples, 65,536 bytes
EEPROM 2,048 bytes (768 bytes calibration, 256 bytes user, 1,024 bytes DAQFlex)
Microcontroller
Table 10. Microcontroller specifications
Parameter Specification
Type High performance 32-bit RISC microcontroller