User Manual
Version 1.1
2011-07-15
deRFnode and deRFgateway
dresden elektronik
ingenieurtechnik gmbh
Enno-Heidebroek-Str. 12
12 7 Dr
n
rm n
Tel.: +49 351 31 85 00
Fax: +49 351 3 18 50 10
wireless@dresden-elektronik.de
www. r
n- l k r nik.
Page 36 of 56
Figure 26: Supervisor LTC2935ITS8-1 with configuration resistors for deRFgateway
8.7. Current measurement
For current consumption tests of the radio module it is possible to place an ampere-meter on
jumper [JP5].
Figure 27: Current measurement for radio module
8.8. USB supply voltage monitoring
The monitoring of the USB power supply can be used as USB detection. The USB voltage
can be detected over a voltage divider on Pin 36.
USB detection:
Pin 36
Figure 28: USB supply voltage monitoring
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