Hardware Guide

How to comply with 10 second rule for hand held devices
When the tag is “awake” it sends out a a signal from UWB. We call this “Hello” signal.
If there are anchors (readers) in the area, they send an acknowledgement signal back. When the tag
receives this acknowledgement, it sends the “location” signal (actual data) to the anchor and goes into
“sleeping” mode.
The tag awakens in determined period and send out a a signal from UWB again.
This cycle is repeated continuously depending on the signaling frequency (in most projects the signaling
frequency is 1 signal per second it could go up to 1 signal per 15 seconds)
The whole signaling process takes 5 milliseconds
If there is no acknowledgement response from the anchors, tag goes into deep sleeping mode for at least 1
minute (is parametric, can be set to be longer).
During deep sleeping mode, tags out a signal in every 10 seconds to check if there are any anchors in its
range. This signal is not sent on UWB, but it is sent on 2,4 Ghz.
If it receives an acknowledgment response, the cycle starts again.
THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO THE
FOLLOWING TWO CONDITIONS:
(1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, AND (2) THIS DEVICE MUST
ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE
UNDESIRED OPERATION.
Warning: Changes or modifications not expressly approved by the party responsible for compliance could
void the user’s authority to operate this equipment.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
—Reorient or relocate the receiving antenna.
—Increase the separation between the equipment and receiver.
—Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
—Consult the dealer or an experienced radio/TV technician for help.