ZOE-M8B - System Integration Manual
UBX-17045131 - R04
Contents
Page 14 of 42
Production Information
2.1.2.1
Super-E mode
The available configuration options for Super-E mode are described in more detail in Figure 10. The
relevant configuration messages and message fields with required values are also given.
The power mode can be selected with the Power Mode Setup message UBX-CFG-PMS. Super-E mode
offers the choice of 1 Hz (default), 2 Hz, or 4 Hz operation. A slower update rate with an interval of 1–
10 s can be set with the Extended Power Management configuration message UBX-CFG-PM2.
Super-E mode has two settings for tuning the receiver operation. The selection is done with the
optTarget configuration option in the Extended Power Management configuration message UBX-
CFG-PM2. The “performance” (default) setting provides the best balance for power vs. performance.
The “power save” setting provides additional power savings up to 15-20% at the cost of position
accuracy.
☞
To ensure a consistent receiver configuration, always first send UBX-CFG-PMS message followed
by UBX-CFG-PM2 message.
☞
For update rates from 1 Hz to 4 Hz, the update rate in UBX-CFG-PMS message and the field
updatePeriod in UBX-CFG-PM2 must match. For example, for 2 Hz update rate selected with the
UBX-CFG-PMS message, set the updatePeriod in UBX-CFG-PM2 to 500 ms.
☞
For update periods longer than 1 s (up to 10 s), first select 1 Hz update rate with UBX-CFG-PMS
message, followed by UBX-CFG-PM2 message with the desired value for updatePeriod between 1–
10 s.
The messages UBX-CFG-PMS and UBX-CFG-PM2 only affect the navigation update rate in the power-
optimized tracking state. The update rate for acquisition and tracking states is set with the UBX-CFG-
RATE message. For a uniform update rate regardless of the Super-E state, the same update rate need
to be set with UBX-CFG-PMS/UBX-CFG-PM2 as well as UBX-CFG-RATE messages.
☞
For update rates from 1 Hz to 4 Hz, it is recommended to use a uniform update rate for all Super-
E states.
☞
For longer update periods up to 10 s, it is recommended to set the acquisition and tracking state
update rate to 1 Hz with the UBX-CFG-RATE message. This may speed up the return to the power-
optimized tracking state in case the receiver needs to enter acquisition or tracking state to decode
satellite information.
The UBX-CFG-PMS and UBX-CFG-PM2 message strings for typical Super-E configurations are given
in Table 1. For more information, see the
u-blox 8 / u-blox M8 Receiver Description Including Protocol
Specification [3].
Power mode UBX-CFG-PMS
UBX-CFG-PM2
Super-E 2 Hz
performance
B5 62 06 86 08 00 00 04
00 00 00 00 00 00 98 76
B5 62 06 3B 30 00 02 06 00 00 00 00 43 01 F4 01 00 00 10 27 00 00 00 00 00 00 00 00
2C 01 2C 01 00 00 CF 41 00 00 88 6A A4 46 FE 00 00 00 40 00 00 00 00 00 00 00 6D C1
Super-E 1 Hz
performance
B5 62 06 86 08 00 00 03
00 00 00 00 00 00 97 6F
B5 62 06 3B 30 00 02 06 00 00 00 00 43 01 E8 03 00 00 10 27 00 00 00 00 00 00 00 00
2C 01 2C 01 00 00 CF 41 00 00 88 6A A4 46 FE 00 00 00 40 00 00 00 00 00 00 00 63 2F
Super-E 1 Hz
power save
B5 62 06 86 08 00 00 03
00 00 00 00 00 00 97 6F
B5 62 06 3B 30 00 02 06 00 00 02 00 43 01 E8 03 00 00 10 27 00 00 00 00 00 00 00 00
2C 01 2C 01 00 00 CF 40 00 00 87 5A A4 46 FE 00 00 00 20 00 00 00 00 00 00 00 33 74
Super-E 3 s
power save
B5 62 06 86 08 00 00 03
00 00 00 00 00 00 97 6F
B5 62 06 3B 30 00 02 06 00 00 02 00 43 01 B8 0B 00 00 10 27 00 00 00 00 00 00 00 00
2C 01 2C 01 00 00 CF 40 00 00 87 5A A4 46 FE 00 00 00 20 00 00 00 00 00 00 00 0B 2C
Super-E 10 s
power save
B5 62 06 86 08 00 00 03
00 00 00 00 00 00 97 6F
B5 62 06 3B 30 00 02 06 00 00 02 00 43 01 10 27 00 00 10 27 00 00 00 00 00 00 00 00
2C 01 2C 01 00 00 CF 40 00 00 87 5A A4 46 FE 00 00 00 20 00 00 00 00 00 00 00 7F 30
Table 1: Required UBX-CFG-PMS and UBX-CFG-PM2 message strings for typical Super-E configurations.
