NXP Semiconductors
QN908x
DK User Guide
QN908x-DK
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© NXP B.V. 2017. All rights reserved.
User guide
Rev. 1.0
— June 2017
12 of 28
3.2.1 Current test using a digital ammeter
When performing the current test using an external digital ammeter, jumpers JP12, JP13,
and JP14 must be set according to
Table 7
. Use a jumper cap to short the pins. The
schematic is shown in
Fig 13
.
Fig 13. Current test using an ammeter
When performing the current test using an ammeter, jumpers JP12, JP13, and JP14
must be set according to
Table 7
.
Table 7.
Current test jumper setting
JP12
Short, when used for Ammeter current test
JP13
Short, when used for Ammeter current test
JP14
Need an ammeter series in
3.2.2 Current test using a DC power analyzer
Measure the current using a DC power analyzer in these two ways: one way is to use the
DC power analyzer as an ammeter that shares the same settings as the ammeter test,
and the other way is to use the DC power analyzer as the power supply for the DUT.
In this case, the QN9080 module is powered by the DC power analyzer. The QN_VCC
power pin is on jumper JP14, where a triangle symbol indicates the pin. The GND pin
near jumper JP2 can be also used as the power ground.
Fig 14. QN_VCC power pin
