BIOPAC Systems, Inc. BioNomadix Logger, User Manual

Page: 11 / 28

Page 11 of 28 BIOPAC Systems, Inc.
WWW.BIOPAC.COM
8.30.2018
Data Setup
Function Available
Options Description Available Settings
Notch Filter Select notch filter setting Off, 60 Hz, 50 Hz
CH2 1 Hz HP Select CH2 high pass filter setting Off/On
CH2 35 Hz LP Select CH2 low pass filter setting Off/On
CH2 Mode Select CH2 ECG mode ECG/BPM
CH1 1 Hz LP Select CH1 low pass filter setting Off/On
CH1 0.5 Hz
HP Select CH1 high pass filter setting Off/On
Test Wave Select test wave type for display in the “Check
Data” preview screen Off/Zero/High/Low/Square/1 Hz SIN/4
Hz SIN/
Previewing Data
When acquisitions are running it is not possible to view raw data from the transmitters. Prior to starting a recording
on the Logger, it is recommended to preview the data to verify proper electrode connections and transducer
connections. Data may be previewed by using the “Check Data” option for each transmitter in the Data Setup menu.
This option will plot the data being recorded in real-time on the screen. Adjustments to electrodes or transducers will
be reflected in the signal on the screen.
The “Check Data” option may also be used to examine the transmitted data for any RF interference. RF interference
will be displayed as “spikes” in the data. While small amounts of RF interference should not be of much concern, if
there is too much RF interference the Logger may not be able to record all of the transmitted data. The “Check Data”
screen may be used to visually examine the steps used to reduce RF interference such as: moving Logger closer to
the transmitter, changing the RF channel, and ensuring uninterrupted “line of sight” between Logger and transmitter.
Choosing an Acquisition Rate
Some transmitters may offer a selection of data acquisition rates in their transmitter options. Lower acquisition rates
may help improve radio communications between the transmitter and the Logger. Use the minimum rate needed to
record your data. Generally 2 kHz is recommended for EMG. For ECG, 1 kHz is the minimum recommended rate for
HRV studies; lower rates may be acceptable if just recording heart rate. 500 Hz should be sufficient for the majority
of other signal types.
Setting an Acquisition Length
Acquisition lengths ranging from 15 seconds to 24 hours are supported, and are started and stopped by selecting the
“Acquire” option in the Main Screen. To set the acquisition length:
In the Data Setup menu, scroll down to the “Duration” option and use the button to toggle through the available
durations. See the table on page 6 for complete acquisition duration options.