Data Sheet

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NEO-7 - Data Sheet

UBX-13003830 - R04 Early Production Information Functional description

Page 12 of 26

1.13 Power management

u-blox 7 technology offers a power-optimized architecture with built-in autonomous power saving functions to

minimize power consumption at any given time. An integrated high efficiency DC/DC converter allows low

power consumption even for higher main supply voltages. The receiver can be operated in two operating modes:

Continuous Mode or Power Save Mode.

For more information about power management strategies, see the u-blox 7 Receiver Description Including

Protocol Specification [2].

1.13.1 DC/DC converter

NEO-7 Modules integrate a DC/DC converter, allowing reduced power consumption especially when using a

main supply voltage above 2.5 V.

For more information see the MAX-7 / NEO-7 Hardware Integration Manual [1]

1.13.2 Operating modes

u-blox 7 modules have two operating modes:

• Continuous Mode for best GNSS performance

• Power Save Mode to optimize power consumption

1.13.2.1 Continuous Mode

Continuous Mode uses the acquisition engine at full performance resulting in the shortest possible TTFF and the

highest sensitivity. It searches for all possible satellites until the Almanac is completely downloaded. The receiver

then switches to the tracking engine to lower power consumption.

Thus, a lower tracking current consumption level will be achieved when:

• A valid GNSS position is obtained

• The entire Almanac has been downloaded

• The Ephemeris for each satellite in view is valid

1.13.2.2 Power Save Mode

For power sensitive applications, u-blox 7 receivers provide a Power Save Mode for reduced power consumption.

Power Save Mode uses two dedicated operations called ON/OFF and Cyclic tracking, that reduce average current

consumption in different ways to match the needs of the specific application. These operations can be set by

using a specific ubx message.

Power Save Mode is not available in GLONASS mode.

1.14 Antenna

NEO-7 modules are designed for use with passive and active

antennas.

Parameter Specification

Antenna Type Passive and active antenna

Active Antenna Recommendations

Minimum gain

Maximum gain

Maximum noise figure

15 dB (to compensate signal loss in RF cable)

dB / 30

1.5 dB

Table 4: Antenna Specifications for all NEO-7 modules

For information on using active antennas with NEO-7 modules, see the MAX-7 / NEO-7 Hardware Integration Manual [1].

NEO-7M

NEO-7N