Measurement Computing PCI-QUAD04 - Manual (Page 14)

PCI-QUAD04 User's Guide Specifications
14
Counter
Table 3. Counter specifications
Counter type LS7266R1 24-bit Dual-axis Quadrature Counter
Quadrature mode:
Clock frequency 1.2 MHz max.
Separation 100 ns min.
Clock pulse width 400 ns min.
Index pulse width 300ns min.
Count mode:
Clock frequency 30 MHz max, (25 MHz max Mod-N mode)
Clock A - high pulse width 14 ns min.
Clock A - low pulse width 14 ns min.
Filter clock (FCK) 10 MHz
Digital filter rate 10 MHz, software selectable divider (1 to 256 in single steps)
Crystal oscillator (FCK source):
Frequency 10 MHz
Frequency accuracy 100 ppm
Interrupt controller
Table 4. Interrupt controller specifications
Controller type 8259 Programmable Interrupt Controller
Configuration Polled mode only
Interrupts 2, 3, 5, 7, 10, 11, 12 and 15
Interrupt enable Programmable
Interrupt sources All Carry/Borrow outputs from LS7266R1, all Index inputs
Environmental
Table 5. Environmental specifications
Operating temperature range 0 to 70 °C
Storage temperature range -40 to 100 °C
Humidity 0 to 90% non-condensing