Measurement-computing CIO-DAS160x/1x Manual de usuario descargar pdf (Pagina 30)

6.1.9 PROGRAMMABLE GAIN CONTROL REGISTER / BURST RATE

BASE ADDRESS + Bh

G0G1XXXXXX

01234567

BURST RATE is fixed at: CIO-DAS1600/12 = 4 µs (250 kHz) between burst samples.

CIO-DAS1602/16 = 13.3 µs between burst samples (75 kHz).

PROGRAMMABLE GAIN CONTROL: Range and gain is controlled by bits G1 and G0. The codes

have different meaning for each board in the DAS1600 family (Table 6-4).

Table 6-4. Range Codes

0 to 1.25V+/-1.25V3

0 to 2.5V+/-2.5V2

0 to 5V+/-5V1

0 to 10V+/-10V0CIO-DAS1602/12

and

CIO-DAS1602/16

0 to 0.01V+/-0.01V3

0 to 0.1V+/-0.1V2

0 to 1V+/-1V1

0 to 10V+/-10V0CIO-DAS1601/12

UNIPOLAR RANGEBIPOLAR RANGECODEBOARD

The range, unipolar or bipolar is controlled by a switch. If your application is better served by

programmable ranges, please consider the CIO-DAS16/Jr or CIO-DAS16/330 boards.

DT-CONNECT NOTE:

To guarantee that DT-Connect is properly initialized prior to any A/D transfer, the DT-Connect

DT-Request handshake line is reset each time this register is written to. Therefore, it is not possible to

use the DT-Connect for A/D sets which involve setting the gain between samples. This is not really a

problem because any such scheme would be low speed and therefore store data to disk, obviating the

need to use DT-Connect to store data on the MEGA-FIFO.

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Measurement-computing CIO-DAS160x/1x Manual de usuario Pagina 30