National Instruments 6023E, 6024E, 6025E Timing I/O

AppendixA Specificationsfor PCI and PXI Buses
6023E/6024E/6025EUser Manual A-8 ni.com
Handshaking...........................................2-wire
Power-on state
PA<0..7>.........................................Input (High-Z),
100 kΩpull-upto+5VDC
PB<0..7>..........................................Input(High-Z),
100 kΩpull-upto+5VDC
PC<0..7>..........................................Input(High-Z),
100 kΩpull-upto+5VDC
Data transfers..........................................Interrupts, programmed I/O
Timing I/O
Number of channels................................2 up/down counter/timers,
1frequency scaler
Resolution
Counter/timers.................................24 bits
Frequencyscalers ............................4 bits
Compatibility..........................................TTL/CMOS
Baseclocks available
Counter/timers.................................20 MHz, 100 kHz
Frequencyscalers ............................10 MHz, 100 kHz
Baseclock accuracy................................±0.01%
Maxsource frequency.............................20 MHz
Mins ource pulseduration ......................10 ns in edge-detect mode
Mingate pulse duration ..........................10 ns in edge-detect mode
Data transfers..........................................DMA, interrupts,
programmed I/O
DMA modes ...........................................Scatter-gather
(single transfer, demand transfer)