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ATB Reference

S

ANALOG

TERMINAL

BOARD

MANUAL

2.01 EDITION
AUGUST 1997

Intro-1

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2
3
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Summary of Contents for AD-945

Page 1: ...ATB Reference ANALOG TERMINAL BOARD MANUAL 2 01 EDITION AUGUST 1997 Intro 1...

Page 2: ...our dealers and direct to our users Do not hesitate to contact us on our HOTLINE numbers given on Intro page 2 if you need help We trust that you will enjoy many years of useful service from your Ana...

Page 3: ...ional LED s 2 Jumpers Settings W1 W4 3 Differential Analog Inputs 8DI 3 4 20mA Current Inputs 4 Thermocouple Cold Junction Compensation 5 List Of Figures Figure 1 1 Optional LEDs 3 Figure 1 2 Jumper T...

Page 4: ...th all these options Instructions of how to add the optional LEDs and pullup resistors to the digital port lines are also included The Analog Screw Terminal Board ______________________________ _ The...

Page 5: ...ATB can have an optional LED and current limiting attached this can be used as an onboard indicator of the signal logic level Depending on the circuits connected to these lines it may not be appropria...

Page 6: ...cts the AMPLOW to the ANALOG ground Pseudo differential inputs are referenced to AMPLOW This jumper can be used in conjunction to W3 to connect AMP LOW to the system ground SYS GND Figure 1 2 Jumper T...

Page 7: ...t Shunt R13 R9 R5 R1 R16 R12 R8 R4 250R 0 5V input tol 0 01 NOTE R26 NOT REQUIRED WHEN CJC CIRCUITRY IS BEING USED 4 20mA Current Inputs _____________________ The 4 20mA current input scheme is common...

Page 8: ...y resistors for the number of channels actually being used in this mode need be fitted In exceptional circumstances 16 current inputs may be used when the AD1200 card is set to 16 SE or 16 Pseudo DI i...

Page 9: ...to measure temperatures and are so subject to heating and cooling stress in addition they are usually in HOT places and so not available for easy inspection If a break occurs in the thermocouple or it...

Page 10: ...urther complicated by the fact that different types of thermocouples are needed to cover different temperature ranges and each thermocouple types voltage output has its own particular way of varying w...

Page 11: ...9 800 45 498 64 6 33 277 41 0 900 51 875 62 4 37 325 39 9 1000 57 942 59 2 41 269 38 9 1100 63 777 57 8 45 108 37 8 1200 69 536 57 2 48 828 36 5 Figure 1 6 Temperature as Function Of Voltage ________...

Page 12: ...uple is known Example AD1200 card jumper set range of 0 10 Volts unipolar Gain of 1000 is selected for Channel 0 Ambient temperature of 18 degrees Centigrade Thus CJC circuit gives a voltage of 18 x 0...

Page 13: ...13 O O 14 AD Ch 14 Ch6 Retn AD Ch 7 15 O O 16 AD Ch 15 Ch7 Retn Analogue Gnd 17 O O 18 Amp Low 12Volts Out 19 O O 20 12Volts Out Power Ground 21 O O 22 DAC0 Output DAC0 Ground 23 O O 24 DAC1 Output DA...

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