NuDAQ PCI-8554, Руководство пользователя

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4
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Introduction
1.2 Applications
u
Event counter
u
Frequency generator
u
Frequency synthesizer
u
Pulse width measurement
u
Low level pulse generator
u
Time delay
u
Industry automation
u
Watchdog timer
1.3 Specifications
♦
Programmable Counter / Timer
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Device : 82C54x4
•
Number of Counters /timers:
10 independent timers / counters
Cascaded 32-bit counters with fixed 8MHz internal clock
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Counter mode: 16-bit down counter
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Maximum input frequency: 10MHz
•
Clock sources of independent counters:
External clock
Prior counter output
CK1 (Programmable)
Clock #10 output
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CK1 clock sources: (Programmable)
8MHz internal base clock
Programmable counter 11 output
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Gate control: default enable or external control
♦
Digital Filter Circuits
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Device: MC14490
•
De-bounce clock: (Programmable)
8MHz internal base clock
Programmable counter 11 output
♦
Digital I/O ( DIO)
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# of input channels : 8 channels
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# of output channels : 8 channels (dedicated output)
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Electronics characteristics: TTL compatible signal
♦
General Specifications
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Connector : 100-pin SCSI-II female connector
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Operating Temperature : 0
°
C ~ 60
°
C
•
Storage Temperature : -20
°
C ~ 80
°
C