The DGH D3000/4000 series are serial input-to-analog output devices. They are
designed to communicate with RS-232 and RS-485 serial ports. Simple ASCII
commands are used to control a 12-bit DAC (Digital-to-Analog Converter) which is scaled to
provide either a current and voltage output. An internal 8-bit microprocessor provides the
intelligent interface between a host computer and the DAC.
The D3000 series modules provide a low cost step function analog output.
series includes all D3000 features along with:
True analog read-back capability (an 8-bit Analog-to-Digital Converter monitors the integrity of the output
signal). It allows the user to monitor the output signal to ensure its
A user-programmable communications watchdog timer to provide orderly shutdown
of the output signal in case of computer or communications failure.
User-programmable output slew rates for applications where a controlled rate
of output change is needed.
Selectable scaling of input data allows the user to scale output to desired
units ( 0-100% instead of 4-20mA).
starting value-protects equipment by providing a safe-start condition.