Omega Engineering PCI-DAS1200 Trigger Control/Status Register, Unibip, Input Range, Input Gain

Models: PCI-DAS1200

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up to 16 channels.

0 = Analog Front-End in Differential Mode. This mode supports up to 8 channels.

UNIBIP Selects offset configuration for the Analog Front-End.

1 = Analog Front-End Unipolar for selected range 0 = Analog Front-End Bipolar for selected range.

The following table summarizes all possible Offset/Range configurations:

UNIBIP

GS1

GS0

Input Range

Input Gain

Measurement

 

 

 

 

 

Resolution

 

 

 

 

 

 

0

0

0

±10 V

1

4.88 mV

 

 

 

 

 

 

0

0

1

± 5 V

2

2.44 mV

 

 

 

 

 

 

0

1

0

±2.5 V

4

1.22 mV

 

 

 

 

 

 

0

1

1

±1.25V

8

610 µV

 

 

 

 

 

 

1

0

0

0-10V

1

2.44 mV

 

 

 

 

 

 

1

0

1

0-5V

2

1.22 mV

 

 

 

 

 

 

1

1

0

0-2.5V

4

610 µV

 

 

 

 

 

 

1

1

1

0-1.25V

8

305 µV

 

 

 

 

 

 

 

 

 

 

 

 

ADPS[1:0] These bits select the ADC Pacer Source. Maximum Internal/External Pacer frequency is 330 kHz.

ADPS1

ADPS0

Pacer Source

 

 

 

0

0

SW Convert

 

 

 

0

1

82C54 Counter/Timer

 

 

 

1

0

External Falling

 

 

 

1

1

External Rising

 

 

 

 

 

 

Note: For ADPS[1:0] = 00 case, SW conversions are initiated via a word write to BADR2 + 0. Data is ‘don't care.’

READ

15

14

13

12

 

11

10

9

8

7

6

5

4

3

2

1

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-

EOC

-

-

 

-

-

-

-

-

-

-

-

-

-

-

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EOC

 

 

Real-time, non-latched status of ADC End-of-Conversion signal.

 

 

 

 

 

 

1

= ADC DONE

 

 

 

 

 

 

 

 

 

 

 

 

 

0

= ADC BUSY

 

 

 

 

 

 

 

 

 

 

7.3.3 TRIGGER CONTROL/STATUS REGISTER

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Omega Engineering PCI-DAS1200 Trigger Control/Status Register, Unibip, Input Range, Input Gain, Measurement, Resolution