3-20 TM80 Telemetry Monitor Service Manual
The configuration of wireless devices is critical to reliable operation of Mindray
monitors. Special attention needs to be paid to the following items:
DHCP
The WLC is not recommended to be used as DHCP server. It is recommended to
enable the WLC DHCP agent function. A dedicated DHCP server is used to
assign IP addresses. The DHCP server needs to reserve a sufficient number of IP
addresses for the telemetry VLAN to ensure that the TM80 can obtain an IP
address. If static IP addresses are used, make sure that the IP address of each
device is unique.
Multicast
The TM80 transmits device discovery packets over UDP so that the CMS can
discover it and establish a connection. Transmission over UDP can be in
multicast or unicast mode. If the customer uses the multicast mode, multicast
transmission must be enabled on the network. IGMP snooping must be
enabled to avoid transmitting unwanted multicast data to the TM80.
DTIM
Set DTIM = 1, Beacon = 100ms for TM80 vlan.TM80 is working under low-power
mode and waked up by according to AP’s DTIM. If the DTIM is too long, TM80
need more time to wake up so that the throughput become lower, the
probability of offline may increase.
Data rate
If the network supports the low data rate, the channel will become crowded .As
a result, the probability of offline may increase.
IF low data rate are closed, be sure that the RF coverage meet TM80’s
requirement.
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