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17
AsteRx-i OEM GNSS Module
17
See instructions in the Reference Guide for details on how to configure SD card logging.
The receiver is compatible with SD cards of up to 32GB. The file system is FAT32.
Shortly driving the button pin (pin#25 of 30-pin connector) low toggles logging on and off.
Driving the button pin low for at least 5 seconds unmounts the SD card if it was mounted,
or mounts it if it was unmounted. The SD card mount status can be checked with the
LOGLED pin (see Appendix A).
When powering off the receiver while logging is ongoing, it can be that the last seconds of
data are lost. To avoid data losses, it is advised to first unmount the SD card. This can be
done in two ways:
1.
By entering the command
“
exeManageDisk, DSK1, Unmount
”
before turning off
the receiver.
2.
By driving the button pin (pin#25) low for at least 5 seconds before turning off the
receiver.
2.10
USB Interface
The user can configure the USB device interface in either USB 1.1 (full speed) mode, or in
USB 2.0 (high speed) mode. USB 2.0 allows higher bandwidth (480 Mbps vs 12 Mbps), but
may not be supported by all host hardware.
By default, USB is configured in USB 1.1 mode. The update files
“AsteRx
-i
_USB_1_1.suf”
and “AsteRx
-i
_USB_2_0.suf”
located in the
USB/
folder of the firmware package can be
used to change this. The current USB mode can be checked with the command
“
lif,
Identification
”.
