PAM-7Q - Hardware Integration Manual
UBX-13003143 - R06
Early Production Information
Hardware description
Page 7 of 26
satellites and acquires other available or emerging satellites. Whenever the receiver can no longer calculate a
position or the number of satellites tracked is below the sufficient number, the acquisition engine powers on
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
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.
.
2.4.1
Electrical Programmable Fuse (eFuse)
PAM-7Q includes an integrated eFuse memory for permanently saving configuration settings.
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:
Baud Rate
String
UART Baud Rate 1200
B5 62 06 41 09 00 01 01 30 81 00 00 00 00 FE 01 22
UART Baud Rate 2400
B5 62 06 41 09 00 01 01 30 81 00 00 00 00 FD 00 21
UART Baud Rate 4800
B5 62 06 41 09 00 01 01 30 81 00 00 00 00 FC FF 20
UART Baud Rate 19200
B5 62 06 41 09 00 01 01 30 81 00 00 00 00 FB FE 1F
UART Baud Rate 38400
B5 62 06 41 09 00 01 01 30 81 00 00 00 00 FA FD 1E
UART Baud Rate 57600
B5 62 06 41 09 00 01 01 30 81 00 00 00 00 F9 FC 1D
UART Baud Rate 115200
B5 62 06 41 09 00 01 01 30 81 00 00 00 00 F8 FB 1C
Table 1: Strings to change baud rate
2.5
Connecting power
The PAM-7Q positioning module has two power supply pins:
VCC
and
V_BCKP
.
2.5.1
VCC: Main Supply Voltage
The
VCC
pin provides the main supply voltage. During operation, the current drawn by the module can vary by
some orders of magnitude, especially if enabling low-power operation modes. For this reason, it is important
that the supply circuitry be able to support the peak power (see datasheet for specification) for a short time.
PAM-7Q module integrates a DC/DC converter. This allows reduced power consumption, especially when using
a main supply voltage above 2.5 V.
