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VCM-DAS-3 Datasheet(PDF) 40 Page - List of Unclassifed Manufacturers

No. de pieza VCM-DAS-3
Descripción Electrónicos  The VCM-DAS-3 is a PC/104-format data acquisition board that provides analog outputs and digital I/O for process control and other applications.
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Fabricante Electrónico  ETC2 [List of Unclassifed Manufacturers]
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VCM-DAS-3 Datasheet(HTML) 40 Page - List of Unclassifed Manufacturers

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Enhanced Mode Operations
VCM-DAS-3 Reference Manual
35
SETTING A CHANNEL TO SLEEP MODE
To set a DAC to sleep mode, perform a Sleep DAC operation by writing Bh to the CTRL field of
the ENCTRL register at I/O port 0x30A, combined with the channel number in the SEL field of
the same register. The channel remains in sleep mode until a voltage output code is written to it.
READING THE SLEEP STATUS OF A CHANNEL
To read the sleep status of a channel:
1. Perform a Read Span operation by writing 9h to the CTRL field of the ENCTRL register
at I/O port 0x30A, combined with the channel number in the SEL field of the same
register.
2. Read the SLEEPSTAT bit (bit 4) of the ENDATLO register at I/O port 0x308, as shown
below. A value of 0 = awake. A value of 1 = sleep mode.
ENDATLO LSB (Read) 0308h
7
6
5
4
3
2
1
0
–
–
–
SLEEPSTAT
–
–
–
–



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