Specifications

Appendix H
D1000/2000 Specifications
Specifications (typical @ +25° C and nominal power supply unless
otherwise noted.)
Analog
• Single channel analog input.
• Maximum CMV, input to output at 60Hz: 500V rms.
• Leakage current, input to output at 115Vrms, 60Hz: <2µA rms.
• 15 bit measurement resolution.
• 8 conversions per second.
• Autozero & autocalibration—no adjustment pots.
Digital
• 8-bit CMOS microcomputer.
• Digital scaling, linearization and calibration.
• Nonvolatile memory eliminates pots and switches.
Digital filtering
• Small and large signal with user selectable time
constants from 0 to 16 seconds.
Events counter
• Up to 10 million positive transitions at 60Hz max., filtered for switch
debounce.
Digital inputs
• Voltage levels: ±30V without damage.
• Switching levels: High, 3.5V min., Low, 1.0V max.
• Internal pull up resistors for direct switch input.
Digital outputs
• Open collector to 30V, 30mA max. load.
Alarm outputs
• HI/LO limit checking by comparing input values to down-loaded HI/LO
limit values stored in memory.
• Alarms: latching (stays on if input returns to within limits) or momentary
(turns off if input returns to within limits).
Communications
• Communications in ASCII via RS-232C, RS-485 ports.
• Selectable baud rates: 300, 600, 1200, 2400, 4800, 9600, 19200,
38400, 57600, 115200.
• NRZ asynchronous data format; 1 start bit, 7 data bits, 1 parity bit and 1
stop bit.