User`s manual

Page 20 of 35 A2500R24x – User’s Manual
Release Date 09/05/12
o These are typically operated on a fixed channel, determined at installation time
and can be avoided by using clear channel assessment. It may be useful to
change the channel used by the video surveillance equipment also, if possible.
2.2.5. Time critical data
If the user requires specific time critical data throughput that cannot tolerate the delays of
potentially many re-transmissions, the user is encouraged to implement an environment-aware
algorithm that periodically monitors/scans the frequency band and maintain a list of “best
available” channels.
2.3. Approved Usage
The A2500R24A and A2500R24C modules have been approved for use in the US, Canada and
Europe. The user is encouraged to use minimum power required to establish a link, thus
minimizing interference.
Changes or modifications to the module and/or operation outside the limits are prohibited and
could void the user’s authority to operate the modules.
Table 3 shows the certified modulation types and data rates along with recommended channel
spacing values. These configurations are common for FCC, IC and Europe.
Table 3 Certified configurations for FCC, IC and ETSI
Table 4 shows certified frequencies of operations for each modulation type. Center frequencies
outside the specified band,[F
c
min, F
c
max], are prohibited, and therefore should not be used for
communication.
Table 4 Certified frequencies of operations and power levels for FCC, IC and ETSI
Modulation Type Datarate (kbps) Deviation (kHz) Phase Transition Channel Spacing (kHz) RX Filter BW (kHz)
1.2 140 NA 310.242 650
2.4 140 NA 310.242 650
4.8 140 NA 310.242 650
10 140 NA 310.242 650
20 140 NA 310.242 650
38 140 NA 310.242 650
100 140 NA 310.242 650
250 140 NA 310.242 650
MSK 500 NA 0 307.861 812.5
2-FSK
Modulation Type
F
c
min(MHz) F
c
max (MHz) Max. Output Power (dBm) PA_Table (Hex)
2-FSK 2401.3 2480.4 1 0xFF
MSK 2401.8 2480.3 1 0xFF