P R O G R A M M I N G T H E C B L 2; Digital Output Buffer; Digital Output Buffer Example - Texas Instruments CBL 2 Reference Manual

Ti cbl 2 data collector: reference guide

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The digital output buffer (DOB) is a circular buffer that contains up to 32 elements. The

output from the buffer is 4-bits wide, and the outputs are CMOS (0-5V) compatible.

The data in Command 1 is entered as decimal representation of the digital value that is

output. For example, 0=0000, 5=0101, and 15=1111. At the beginning of each sample, a

pointer into the digital output buffer is incremented and the next available data is sent

to the output lines.

The electrical characteristics of the digital outputs are:

Voutput-high ‚ 3.7V @ M400uA

Voutput-low 0.65V @ 1.6mA

The number of times that the DOB outputs the contents of the buffer depends on the

number of data elements defined in Command 1 and the number of samples defined

in Command 3.

Command 1 list is {1,31,5,1,2,3,4,5}

where:

1=Channel Setup.

31=DIG OUT.

5=Five data elements.

1=0001 (digital nibble).

2=0010 (digital nibble).

3=0011 (digital nibble).

4=0100 (digital nibble).

5=0101 (digital nibble).

CBL 2 Technical Reference

P r o g r a m m i n g t h e C B L 2

Command 3 list is {3,1,100}

where:

3=Sample and Trigger Setup.

1=One second sample time.

100=One hundred samples.

(Trigger Type defaults to manual

triggering.)

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