• Data loggers that are not currently connected (new devices or ones that have fallen out of
radio contact) have to scan for available access points for a complete cycle before they
can decide what is the optimal access point for them. This means that connection
attempts typically take at least a couple of minutes. Additionally, some joining scenarios
may take multiple attempts. For example, when filling a single access point up to its full
capacity of 32 data loggers, it may take an hour for the last data logger to successfully
connect to the access point.
• Access points request missing data and issue management commands to data loggers
within their communication window. Transferring a full month's worth of measurement
data from 32 data loggers using one access point takes several hours.
Data Logger Scanning Interval
Scanning for available access points consumes power. To prevent repeated scanning from
draining their batteries, RFL100 Data Loggers shut down their radio temporarily if they can
find no access points to join. They will resume scanning after a waiting interval that gets
progressively longer if they keep failing to find an access point. The maximum interval is 8
hours and 30 minutes.
This means that when access points become available after an outage, it may take several
hours for data loggers to discover them. This is why you should always keep your access points
powered up, and why you should start your network installation by installing the viewLinc
Enterprise Server and access points first.
You can manually wake up the radio of an RFL100 Data Logger by pressing its
Refresh
button. The button is located next to the service port under the silicone
plug.
2.7 Regulatory Compliance
2.7.1 FCC Compliance Statement
This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio frequency energy and, if
not installed and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a residential area is likely
to cause harmful interference in which case the user will be required to correct the interference
at his own expense.
Changes or modifications to this equipment not expressly
approved by the party responsible for compliance could void the user’s
authority to operate the equipment.
WARNING!
RFL100 User Guide
M211861EN-A
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