Manual Number: 00650-014-4
Page 1-6
AD12-8 Manual
Programmable Timer
Type:
8253 programmable interval timer.
Counters:
Three 16-bit down counters, two permanently
concatenated with 1/32 multiple of the color
oscillator clock as programmable timer. One is
uncommitted.
Output Drive:
2.2mA at 0.45V (5 LSTTL loads).
Input Gate:
TTL/DTL/CMOS compatible.
Clock Frequency:
DC to 8 MHz.
Active Count Edge:
Negative edge.
Min Clock Pulse Width:
125nS.
Timer Range:
4 MHz to <1 pulse/hr.
Environmental
Operating Temp:
0 to 60
o
C.
Storage Temp:
-40 to 100
o
C.
Humidity:
0 to 90% RH, non-condensing.
Size:
7.0 inches long, requires full-size slot.
Power Required:
+5VDC: 150 mA typical
+12VDC: 10 mA typical
-12VDC: 10 mA typical
How to remain CE Compliant
In order for machines to remain CE compliant, only CE compliant parts may be used. To keep a
chassis compliant it must contain only compliant cards, and for cards to remain compliant they
must be used in compliant chassis. Any modifications made to the equipment may affect the CE
compliance standards and should not be done unless approved in writing by Industrial Computer
Source.
The Model AD12-8 is designed to be CE Compliant when used in an CE compliant chassis.
Maintaining CE Compliance also requires proper cabling and termination techniques. The user is
advised to follow proper cabling techniques from sensor to interface to ensure a complete CE
Compliant system. Industrial Computer Source does not offer engineering services for designing
cabling or termination systems. Although Industrial Computer Source offers accessory cables and
termination panels, it is the user's responsibility to ensure they are installed with proper shielding
to maintain CE Compliance.
