Resolution Calculator for Model DI-1120

How much ADC Resolution Do You Really Need for your Measurements?

The bit value of an analog-to-digital converter (ADC) refers directly to its resolution. The resolution determines how finely it slices its full-scale measurement range, or in other words, the smallest change in the input signal that it can theoretically measure (ignoring noise). Use the calculator below to determine if the DI-1120 has enough ADC resolution to meet your application requirements. Review the blog post How Much ADC Resolution Do You Really Need? for more information.

Enter number of analog channels enabled:	1 2 3-4
Enter the sample rate per channel:
	Min Output	Max Output	Units
Sensor Output Range:			V  mA1
Sensor Output in Engineering Units:
Channel Gain Range2:	±2 ±5 ±10 ±20 ±50 ±100
	Calculate
Resolution:	unknown

¹ Assuming the use of the R250 Shunt Resistor (recommended). A different shunt resistor will produce different results.
² Choose a Channel Gain Range based on the closest available value to your sensor output range. For example, if the output range of your sensor is 0-10 Volts you should choose the ±10 Volt Gain Range. Smaller gain ranges may be used if the effective measurement range is known (see Gain and Dynamic Range Considerations for more information). 4-20mA and 0-20mA outputs should use ±5 Volt Gain Range.