EVK-M8U User Guide
UBX-15023994 - R01
Advance Information
Measuring tracking current
Page 16 of 26
6
Measuring tracking current
To measure the NEO-M8U module tracking current with EVK-M8U, follow these steps:
1.
Connect a mean-reading voltmeter across P1A (VCC) and P1B of the front connector. (see Figure 91)
2.
Wait 12 minutes to download all GNSS orbital data, or download all the Aiding Data via the AssistNow
Online service
3.
Read the voltage (and average if necessary) on the voltmeter and convert to current (1 mV equals 1 mA)
4.
Perform the test with good signals and clear sky view to ensure that the receiver can acquire the satellite
signals.
The NEO-M8U module current measurement includes its internal SQI flash, inertial sensor, and any current
delivered to SPI or I
2
C interface loads.
For more details see the circuit in Figure 12.
Figure 9: Example – tracking current measurement
Hirschman
Part Nr.: 934160100
P1A (VCC)
P1B
P1B
P1A (VCC)
