Measurement Computing BTH-1208LS, Руководство пользователя

Страница: 24 / 28

BTH-1208LS User's Guide Specifications
24
Schmitt trigger hysteresis 0.76 V typ
0.4 V min
1.2 V max
Input high voltage threshold 1.74 V typ
1.3 V min
2.2 V max
Input high voltage limit 5.5 V absolute max
Input low voltage threshold 0.98 V typ
0.6 V min
1.5 V max
Input low voltage limit –0.5 V absolute min
0 V recommended min
Counter
Table 14. Counter specifications
Parameter Specification
Pin name CTR
Counter type Event counter
Number of channels 1
Input type Schm
itt trigger, 47 kΩ pull
-down to ground, rising edge triggered
Input source CTR screw terminal
Resolution 32 bits
Maximum input frequency 1 MHz
High pulse width 500 ns min
Low pulse width 500 ns min
Schmitt trigger hysteresis 0.76 V typ
0.4 V min
1.2 V max
Input high voltage threshold 1.74 V typ
1.3 V min
2.2 V max
Input high voltage limit 5.5 V absolute max
Input low voltage threshold 0.98 V typ
0.6 V min
1.5 V max
Input low voltage limit –0.5 V absolute min
0 V recommended min
Memory
Table 15. Memory specifications
Parameter Specification
FIFO 12K (12,288) samples
Non-volatile EEPROM 2,048 bytes (768 bytes calibration, 256 bytes user, 1,024 bytes firmware use)
Microcontroller
Table 16. Microcontroller specifications
Parameter Specification
Type High performance 16-bit RISC microcontroller
Distributed By MicroDAQ, LLC 603-746-5524 www.MicroDAQ.com