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Figure 69 : Example of Interference from Underground Cables Observed
16.3 Repeaters
16.3.1 Connection issues (operating RP)
1. Confirm that battery is connected to RP.
2. Check RSSI on all RPs: must be a value less negative than -78dB
3. Due to the nature of the communications, it is unlikely that Wifi interference will
be a significant issue. However, the LQI (link quality indicator value) will provide
some clue. If the RSSI value is in the above mentioned range (good signal
strength), the LQI value should be in the mid to high 90's. Values outside of this
range may indicate a wireless performance issue.
4. Check distances and line of sight
16.3.2 Battery Level
1. 2.7V on RPs with about 1 month remaining typically
2. The previous generation RPs had the voltage measured after the regulator, so
they always read about 3V (usually 2.96V). Those were all serial numbers up to
57FB and were produced through August 2013.
16.3.3 Non operating RP
1. Check if equipment is damaged or missing
2. Sufficiently charged battery - LEDs flash red and green when initially powered,
then flash red about every 3 seconds.
3. Insufficiently charged battery - LEDs flash red and green consistently or not flash
at all
Version
11
Last Editor
Jeerh, Manpreet
Document
WIMAG GENERAL HANDBOOK
Name
Copyright © Siemens Mobility Limited 2012. All Rights Reserved.
using 'D' Mode
Page 90 of 117
Status
Date
Doc. No.
Siemens Mobility Limited
Sopers Lane, Poole, Dorset
BH17 7ER
Issued
March 2020
667/HB/47200/000
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