9 TIPS AND TROUBLESHOOTING
9.1 DIAGNOSTIC LOG FILES
The BAR generates a detailed diagnostic log file every time it is used. Each action that is performed
is logged with a time and date stamp. Even if there is no SD memory card present the BAR will log
a small amount to internal memory until an SD card is inserted and then dump the internal buffer
to the log file. Log file is saved in the root folder of the SD card. The log files also contain
information about each recording, such as the gain used, the time it started and ended, the
battery charge remaining and how much SD card space is left.
If the BAR behaves unexpectedly or you miss a recording that you think should have occurred,
check the log file to see why.
9.2 RECORDIN G TIME VS SAMPLE RATE
The table below shows the typical recording time vs the sampling rate of the recorder when
powered from one to six 18650 batteries with a capacity of 3400mAh. Note that with a higher
sampling rate the SD card is written to more often which causes the power consumption to
increase.
Sample rate
Total mono recording time per battery (hrs)
1 2 3 4 5 6
16 kHz 165 330 495 660 825 990
22.05 kHz 155 310 465 620 775 930
32 kHz 150 300 450 600 750 900
44.1 kHz 140 280 420 560 700 840
48 kHz 125 250 375 500 625 750
96 kHz 120 240 360 480 600 720
* NB: These figures should be considered as indicative only as other factors such as SD card brand
and ambient temperature can have a large impact on battery life.
9.3 SD CARD SIZE VS RECORDING DURATION
The PC Scheduler software ( See 6.2 Programming the schedule on a computer ) automatically
calculates how much space the scheduled recordings will take up and how full the selected SD
cards will be. Alternatively, the table below shows how many hours of recording will fit on each
sized SD card for a given sample rate. Higher sample rates take up more space and therefore
cannot record for as long on the same SD card. These figures are for a single channel (mono)
recording in uncompressed WAV file format. If you are recoding in stereo, simply half the number
of hours you can record. If you are recording in lossless compressed FLAC file format, you typically
save around 40% however the compression rate will vary with the complexity of the soundscape.
SD Card size
Total hours of recording that can fit on an SD CARD
for each sample rate (mono recording). (hrs)
16 kHz 22.05 kHz 32 kHz 44.01 kHz 48 kHz 96 kHz
16 GB 138 100 69 50 46 23
32 GB 277 201 138 100 92 46
64 GB 555 403 227 201 185 92
128 GB 1111 806 555 403 370 185
256 GB 2222 1612 1111 806 740 370
512 GB 4444 3224 2222 1612 1481 740
To Next Page
Loading...
Need help?
General