Omega Engineering OM-DAQ-USB-2401 manual Configuration Parameter Settings

Software 4

Configuration Parameter Settings

Channel	The input channel’s name (not editable)
	AN1D = analog channel 1, differential input
	AN1H = analog channel 1, single-ended high input
	AN1L = analog channel 1, single-ended low input
	Etc.
Nickname	You can specify the Nickname (e.g., Oven 1, Monitor
	Room)
Units	You can specify the Engineering Unit. When switching
	between voltage and thermocouple ranges, this will
	automatically switch to the default units for that range.
	However, any units label may be typed in here.
On/Off	To turn on or turn off the selected input channel
Single/Diff	You can select input channel as Single-ended or
	Differential input.
Range	You can select the voltage input range or thermocouple
	type for each input channel. Thermocouples must
	always be used with Differential input.
Scale and	You can rescale the input signal. This scaled/offset
Offset	value will appear in all data displays, and in any saved
	data files.

Sampling can be set in terms of “Scan Rate” or “Scan Time”.

Scan Rate = 1/(Scan Time).

For example, if you are acquiring 4 voltage inputs at 250 Hz, you will receive 250 complete scans per second. Meaning each channel will send 250 pieces of data every second, for a total of (4 x 250) = 1000 pieces of data.

The maximum scan rate is affected by the number of channels turned on. Selecting thermocouple input also lowers the maximum scan rate.

Figure 4-10. Scan Options

Figure 4-11. Units Options

Figure 4-12. Automatic Calibration

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