3-82 TM80 Telemetry Monitor Service Manual
3.9.5 5G Band Channels
There are DFS channels in 5G band. Prior to transmitting on a DFS channel, AP must
first listen for the presence of a radar system. If radar is detected, the channel must
be vacated and flagged as unavailable. AP must continue to monitor the
environment for the presence of radar during operation and, if radar is detected,
must move to an unoccupied channel and instruct all associated client devices to do
the same. Client devices like TM80 may not transmit on a DFS channel unless
instructed by an infrastructure device that the channel is free from radar.
When in roaming, TM80 can only use passive scan to find a better AP. Because a
passive scan may take hundreds of milliseconds per DFS channel, especially in the
FCC and ETSI regulatory domains where there are 15 DFS channels. Due to these
limitations, DFS compliance will impact Wi-Fi performance and reliability of TM80.
So TM80 disable DFS channel supporting.
The TM80 can only use channels in U-NII-1 (channel 36, 40, 44, 48)and
U-NII-3(channel 149,153,157,161,165, not supported in ETSI regulatory domain).
NOTE
Generally, the 5G band has much less RF interference than the 2.4G
band, so Mindray recommends customer to use 5G band if possible.
3.10 Network Verification with TM80
Equipment: TM80 and CMS PC
3.10.1 Test Preparation
Perform settings according to steps in the Operator’s manual.
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