Product Specifications Wireless Specification
TM80 Telemetry Monitor Operator’s Manual A - 9
Data integrity
The probability for loss of application data within wireless net-
work should be less than 1000ppm(0.1%).
Data latency
Total delay of data transmission from the TM80 Telemetry Moni-
tor to the CMS: ≤ 3 seconds.
Priority
All communication data types shall have the same priority.
Transmission distance
Distinct vision distance between the TM80 and the AP is no less
than 50 m.
Roaming
The network switchover is automatically implemented when
TM80 moves from the coverage area of AP1 to the coverage
area of AP2, no network interruption alarm event will occur.
System capacity
Number of the TM80s supported by a single AP: ≤ 16;
Each TM80 can communicate with the CMS.
Dynamic networking stability
When a TM80 is moving at the rate of no more than 3.75 m/s
within a 15m non-blocking linear distance, it does not encoun-
ter a network interruption alarm event.
Resistance to wireless interference
When the distance between the interfering devices and the
TM80 is greater than 20 cm, and a co-channel interference Wi-Fi
network (should be no greater than -85dBm) and an adjacent-
channel Wi-Fi network (should be no greater than -50 dBm syn-
chronously exist, the TM80 does not encounter a network inter-
ruption alarm event.
Note: the interfering devices includes:
• Cellular communication devices
• Microwave ovens
• Intercoms
• Cordless phones
• Bluetooth devices
Network interruption alarm
1. When the network interruption occurs, the CMS issues
related alarms in 12 seconds.
2. When the network is reconnected, wireless connection
recovers automatically.
Wireless networking stability
The ratio of the communication data lost on center station from
TM80 is less than 0.1% in 24 hours under the following circum-
stances:
â– When 16 TM80s are connected to one AP,
â– Each of the 16 TM80s roam 30 times, and
â– At least 3 TM80s roam simultaneously
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