Sensor Control; Frequently Asked Questions - Reftek 180-SM 2 Series User Manual

Rev 1.0
supplied by REF TEK include solar panels, battery charge regulators, and protective
safety devices.

1.8 Sensor Control

SMx 2 DAS provides controls for testing the internal accelerometer. For more information
on sensor control see the SMx

1.9 Frequently Asked Questions

Question: Does any data loss occur if acquisition is turned on and the NET is not
connected?
The data loss that occurs depends upon the parameters of the unit. If the unit
parameters are set to store data to disk ONLY then there is no effect, otherwise RAM will
fill and acquisition will stop. For further clarification see the explanation in the section
"NET Port".
Question: Can a different sampling rate be used on different datastreams?
Yes.
The sample rate list can be broken into two groups:
• Group One: The following rates are only available when recording a single sample rate for all
streams: 4000, 2000, 1000, 500, 250, and 125.
• Group Two: The following rates may be recorded in any combination within all streams: 200,
100, 50, 40, 20, 10, 5 and 1.
Case
Selection of a When the user activates any of the
sample rate from other data streams, the sample rate
Group One. chosen must be the SAME.
Selection of a When the user activates any of the
sample rate from other data streams, ANY of the group
Group Two. two sample rates can be chosen.
NOTE: All channels of a datastream run at the same base sample rate.
Question: Can I format the USB disk on the PC for use in the SMx
For optimal performance in a REF TEK SMx
formatted BY THE RECORDER.
Reftek Systems Inc.
180-SMx2 Users Guide
180-SMx2-UG
2
Theory of Operations.
Description
2 recorder, USB disks should ALWAYS be
Example of
Selection of 125 SPS for Data Stream 1.
This means that when Data Stream 2 is
activated the sample rate is fixed at 125 SPS
and there are no other sample rate choices
available.
Selection of 40 SPS for Data Stream 1.
This means that when Data Stream 2 is
activated the choice is selection of any of
Group two sample rates (200, 100, 50, 40, 20,
10, 5, or 1).
2
recorder?
11/29/2022
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