D1000 Series Common Specifications

Analog

Single channel analog input.

Input to output isolation at 60 Hz: 500 Vrms.

15 bit measurement resolution.

8 conversions per second.

Zero drift: +/-1 count max (autozero).

Autozero & auto gain - no adjustment pots.

Events Counter

Counts up to 10 million positive transitions.

Digital Inputs

Voltage levels: +/-30V without damage.

Switching levels: Logic '0' < 1.0V, Logic '1' > 3.5V.

Internal pull up resistors for direct switch input.

Digital Outputs

Open collector to 30V, 30mA maximum load per bit.

Alarm Outputs

HI/LO alarm values checked against input signal.

Alarm Types: Latching or Momentary.

Alarm values and types stored in EEPROM.

Communications

RS-232 or RS-485 interface.

Simple ASCII command and response protocol.

D1000M Series utilizes Modbus RTU protocol.

Baud rates from 300 to 38.4K.

Up to 124 modules per host computer serial port.

Optional error checking via cumulative checksum..

All communications values are stored in EEPROM.

Power Supply

Requires unregulated +10 to +30Vdc.

Protected against power supply reversals.

0.75W max (D1500/D2500 series = 2.0W max.).