Measurement-computing PCI-DAS6402/16 Manual do Utilizador Página 28

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PCI-DAS6402/16 User's Guide Specifications
Counters
Table 17. Counter specifications
User counter type 82C54
Configuration One down counter, 16 bits. Counters 2 and 3 not used.
Counter 1 source External from connector (CTR1 CLK)
Counter 1 gate Available at connector (CTR1 GATE).
Counter 1 output Available at connector (CTR1 OUT).
Clock input frequency 10 MHz max
High pulse width (clock input) 30 nS min
Low pulse width (clock input) 50 nS min
Gate width high 50 nS min
Gate width low 50 nS min
Input low voltage 0.8 V max
Input high voltage 2.0 V min
Output low voltage 0.4 V max
Output high voltage 3.0 V min
Pacer
Table 18. Pacer specifications
ADC pacer type ASIC
Configuration 1 down counter, 24 bits (1 scan interval, 1 sample interval)
ADC pacer Source 40 MHz
ADC pacer Gate Internally controlled by software/hardware trigger.
ADC pacer Out ADC pacer clock, available at user connector (A/D pacer out)
DAC Pacer type ASIC
Configuration 1 down counter, 24 bits (1 scan interval, 1 sample interval)
DAC pacer source 40 MHz or 100 kHz internal source. Software selectable
DAC pacer gate Internally controlled by software/hardware trigger.
DAC pacer out
DAC pacer clock. Available at connector. (SSH OUT / D/A PACER OUT). This pin is
software selectable as SSH OUT or D/A PACER OUT.
Internal pacer crystal oscillator 40 MHz
Frequency accuracy 50 ppm
Power consumption
Table 19. Power consumption specifications
+5 V 2.9A typical, 3.3 max
Environmental
Table 20. Environmental specifications
Operating temperature range 0 to 70 °C
Storage temperature range -40 to 100 °C
Humidity 0 to 95% non-condensing
5-7
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