User's Manual

APPENDIX A: PIU AND PICCOLO-XR SPECIFICATIONS
45
Note 11: For radio functionality external Power In minimum
voltage=5 V.
Unlicensed Frequency Restrictions
(For UHF 430-450 MHz radio only) When using a frequency
in the unlicensed ISM range (433.0625-434.7875 MHz, not
including 443.95 MHz and 444.8625 MHz), certain
regulatory restrictions apply:
Maximum transmit power 10mW (See Note 12 below.)
Maximum transmission time 1 sec (See Note 13 below.)
Channel occupation duty cycle
(total transmit time in any hour)
10% per hour (360 seconds)
(See Note 14 below.)
Transmission Limited to quiet channel (See
Note 15 below.
Override Not allowed
When Piccolo XR / PIU units are ordered in the unlicensed
ISM range (433.0625 - 434.7875 MHz), the radio will be
shipped after being programmed to 10 mW output power.
Note 12: Please note that due to the lower transmission
power, the distance between the Piccolo and the PIU is
shorter than the distance when using a licensed frequency
with 100 mW transmission power.
Note 13: The current consumption of the Piccolo will
increase due to the fact that the Maximum transmission time
is reduced and therefore the Piccolo should wake up more
frequently.
Note 14: The maximum number of transmissions from the
PIU/Piccolo is limited to 360 per hour. When this number is
exceeded, the PIU/Piccolo will stop transmitting until the
current hour has elapsed.
Note 15: The PIU/Piccolo will not transmit on a busy
channel. Verify that the frequency you choose in the band is
not continually busy.