Specifications – Access PCI-DIO-24D(H) User Manual
Page 7
Manual PCI-DIO-24DH
7
Specifications
Digital Inputs (TTL Compatible)
•
Logic High:
2.0 to 5.0 VDC
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Logic Low:
-0.5 to +0.8 VDC
•
Load:
±
20 μA
Digital Outputs
•
Logic High:
2.0 VDC min., source 32 ma
•
Logic Low:
0.55 VDC max., sink 64 ma
Optional Counter/Timers
•
Type:
82C54 programmable interval counters (up to three)
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Output drive:
Source 2.5 mA, sink 24 mA
•
Input Gate:
TTL/CMOS compatible
•
Clock:
On-board, 1 MHz crystal-controlled oscillator
•
Active Count Edge:
Negative edge (falling edge)
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Min. Clock Pulse Width: 30 ns high, 40 ns low
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Timer Range:
16 bits (x3 per i8254)
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Power Output:
Resettable 0.5A fused +5 VDC from computer bus
Power Required
•
Basic Unit:
+5 VDC at 170 mA typical if no current is drawn from
the auxiliary fused +5 VDC output
•
With One Counter:
+5 VDC at 190 ma
•
With Two Counters:
+5 VDC at 210 ma
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With Three Counters:
+5 VDC at 230 ma
Environmental
•
Operating Temperature Range: 0 °C. to 60 °C
•
Storage Temperature Range:
-50 °C. to +120 °C
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Humidity:
0 to 90% RH, non-condensing
•
Size:
4.8" Long (122 mm)