MAX-7 / NEO-7 - Hardware Integration Manual
UBX-13003704
-
R09
Production Information
Hardware
description
Page
9 of 52
again to guarantee a quick reacquisition. Even if the acquisition engine powers off, the tracking engine
continues to acquire satellites.
For best performance, use
continuous mode
.
2.3.2
Power Save Mode
Two Power Save Mode (
PSM
) operations called
ON/OFF
and
Cyclic tracking
are available. These use different
ways to reduce the average current consumption in order to match the needs of the specific application. PSM
operations are set and configured using serial commands. For more information, see the
u-blox 7 Receiver
Description Including Protocol Specification
The system can shut down an optional external LNA using the ANT_ON signal in order to optimize power
consumption, see section 2.7.5.
Using the USB Interface is not recommended with Power Save Mode since the USB standard does not
allow a device to be non-responsive. Thus, it is not possible to have full advantage of Power Save Mode
operations in terms of saving current consumption.
Power Save Mode is not supported in GLONASS mode.
2.4
Configuration
The configuration settings can be modified using UBX protocol configuration messages. The modified settings
remain effective until power-down or reset. If these settings have been stored in BBR (Battery Backed RAM), then
the modified configuration will be retained, as long as the backup battery supply is not interrupted.
Configuration can be saved permanently in SQI flash.
2.4.1
Electrical Programmable Fuse (eFuse)
u-blox 7 includes an integrated eFuse memory for permanently saving configuration settings.
If no external FLASH memory is available, the eFuse memory can also be used to store the configuration. The
customer can program the eFuse.
eFuse is One-Time-Programmable; it cannot be changed if it has been programmed once.
String to change the default Baud rate:
USB self powered / UART Baud Rate 1200
B5 62 06 41 09 00 01 01 30 81 00 00 00 00 FE 01 22
USB self powered / UART Baud Rate 2400
B5 62 06 41 09 00 01 01 30 81 00 00 00 00 FD 00 21
USB self powered / UART Baud Rate 4800
B5 62 06 41 09 00 01 01 30 81 00 00 00 00 FC FF 20
USB self powered / UART Baud Rate 9600
B5 62 06 41 09 00 01 01 30 81 00 00 00 00 FF 02 23
USB self powered / UART Baud Rate 19200
B5 62 06 41 09 00 01 01 30 81 00 00 00 00 FB FE 1F
USB self powered / UART Baud Rate 38400
B5 62 06 41 09 00 01 01 30 81 00 00 00 00 FA FD 1E
USB self powered / UART Baud Rate 57600
B5 62 06 41 09 00 01 01 30 81 00 00 00 00 F9 FC 1D
USB self powered / UART Baud Rate 115200
B5 62 06 41 09 00 01 01 30 81 00 00 00 00 F8 FB 1C
