Omega DP3001 General Information, Specifications Analog Input, Reference Input for 3-WIRE Ratio

1.0GENERAL INFORMATION

This voltmeter is a 4 1/2 digit panel meter for applications which require a compact, quality DC voltmeter. This model uses dual-slope conversion. Additionally, it provides automatic zeroing before each reading and does so with a minimum of parts for increased reliability.

The voltmeter has a resolution of 1 part in ±19999 counts. By using an external DC voltage reference, any of the given ranges can be configured for 3-wire (common ground) ratio measurement with readout from 0 to 1.9999.

Standard features include selectable decimal point location, display hold, test and blanking. Each model contains the required circuitry for full range selection and easy configuration.

2.0SPECIFICATIONS

2.1ANALOG INPUT

Model	-3	-4	-5
Range	±1.9999 Vdc	±19.999 Vdc	±199.99 Vdc
Resolution	0.1 mV	1 mV	10 mV
Maximum input	250 V rms, 350 Vp	250 V rms, 1000 Vp	250 V rms,1000 Vp
Input resistance	1 Gohm	1 Mohm	1 Mohm
Bias current	10 pA	1 pA	1 pA
Configuration	differential
Zero	automatic
Span adjustment	±5%

2.2REFERENCE INPUT FOR 3-WIRE RATIO

	Analog input range	±2 Vdc, ±20 Vdc, ±200 Vdc
	Reference voltage	+0.5 to +2.0 V
	Load on reference	80 ohm (std), 100 Mohm (opt)
	Accuracy	99.95%
2.3	NOISE REJECTION
	NMR, sig hi to sig lo	56 dB at 50/60 Hz
	CMR, sig lo to ana gnd	86 dB from DC to 60 Hz
	CMV, sig lo to ana gnd	±1.0 Vdc
	CMR, ac gnd to ana gnd	120 dB from DC to 60 Hz
	CMV, ac gnd to ana gnd	2100 Vp per HV test, 354 Vp per IEC 348 spacing

1