Measurement-computing PCI-DAS6402/16 Manuale Utente Scaricare il pdf (Pagina 28)

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

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Measurement-computing PCI-DAS6402/16 Manuale Utente Pagina 28