Fluke 2635A, 2625A service manual A Specifications, DC Voltage Inputs Resolution Range Slow Fast

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Service Manual

Table 1-4. 2635A Specifications

The instrument specifications presented here are applicable within the conditions listed in the Environmental portion of this specification.

The specifications state total instrument accuracy following calibration, including:

∙A/D errors

∙Linearization conformity

∙Initial calibration errors

∙Isothermality errors

∙Relay thermal emf’s

∙Reference junction conformity

∙Temperature coefficients

∙Humidity errors

Sensor inaccuracies are not included in the accuracy figures.

Accuracies at Temperatures Other Than Specified

To determine typical accuracies at temperatures intermediate to those listed in the specification tables, linearly interpolate between the applicable 0°C to 60°C and 18°C to 28°C accuracy specifications.

Response Times

Refer to Typical Scanning Rate and Maximum Autoranging Time later in this table.

DC Voltage Inputs

Resolution

Range

Slow

Fast

	90 mV*			1 μV			10 μV
	300 mV			10 μV			0.1 mV
	3V			0.1 mV			1 mV
	30V			1 mV			10 mV
	150/300V			10 mV			0.1V
	900V* **			10 μV			0.1 mV
			Accuracy ±(% ±V)
Range		18°C to 28°C				0°C to 60°C
	90 Days, Slow	1 Year, Slow		1 Year, Fast	1 Year, Slow		1 Year, Fast

90 mV*	0.29% + 7μV		0.034%	+ 7 μV	0.054%	+ 20 μV
300 mV	0.026% + 20 μV		0.031%	+ 20 μV	0.047%	+ 0.2 mV
3V	0.028%	+ 0.2 mV	0.033%	+ 0.2 mV	0.050%	+ 2 mV
30V	0.024%	+ 2 mV	0.029%	+ 2 mV	0.046%	+ 20 mV
150/300V	0.023%	+ 20 mV	0.028%	+ 20 mV	0.045%	+ 0.2V
900 mV	0.026%	+ 20 μV	0.031%	+ 21 μV	0.047%	+ 0.2 mV

*Not used in Autoranging.

**Computer interface only (see FUNC command).

0.074% + 7 μV

0.070% + 20 μV

0.072% + 0.2 mV

0.090% + 2 mV

0.090% + 20 mV

0.070% + 20 μV

0.094% + 20 μV

0.087% + 0.2 mV

0.089% + 2 mV

0.107% + 20 mV

0.107% + 0.2V

0.087% +0.2 mV

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