User's Manual
© 2010 - 2015 Persistent Systems, LLC – All Rights Reserved108
TROUBLESHOOTING
SYMPTOM POTENTIAL ROOT
CAUSE
POTENTIAL SOLUTION
NODES ARE UN-
ABLE TO COM-
MUNICATE
NODES NOT
POWERED ON
1. Check for depleted batteries and/or discon-
nected power cables.
INADEQUATE
POWER SUPPLY
1. MPU3/MPU4 can require as much as 18W
of peak power to operate. Quads (with 2W
radio) can require as much as 60W.
2. Ensure that 60W PoE injector is being used.
3. Ensure other power sources are adequate.
CRYPTO MODE
AND/OR CRYPTO
KEY SET INCOR-
RECTLY
1. The Crypto Mode and Crypto Key must be
the same on all nodes. e.g. AES-256 + SHA1
will not communicate with AES-256 + SHA-
512.
2. To check the Crypto Mode setting, click
“Security” > “Display Key” and ensure that
the Crypto Mode setting is the same on all
nodes.
3. On the same page, ensure that the Crypto
Key is the same on all nodes.
RADIOS NOT
ENABLED
1. Depending on node type, several radios
may be available. At least one radio must be
enabled for the node to communicate.
2. To enable a radio, click “Node Configuration”
> “Node Configuration.” Ensure “Enabled” is
selected from the drop-down menu.
FREQUENCY
AND/OR CHAN-
NEL WIDTH SET
INCORRECTLY
1. Radios must be on the same Center
Frequency and the same Channel Width in
order to communicate. e.g. a node on 2412
MHz, Width =
5MHz will not communicate
with 2412 MHz Width =
20MHz.
2. To set Frequency and/or Channel Width,
click “Node Configuration” > “Node
Configuration.” In the Configuration Settings
for an available Radio, ensure that the Center
Frequency AND the Channel Width are the
same on all nodes. Note that depending on
the type of radio module installed, specific
frequencies may not be available.