User's Manual
Rev 30-2015 Page 8
Set Radio Regulatory Domain:
Use this menu to choose the appropriate maximum radiated output power for compliance with the local regulations
of the country in which the radio unit is to be used:
• CE for Europe: +13 dBm eirp at 100 kbps and 500 kbps
• FCC/RSS for US/Canada: +16 dBm eirp at 100 kbps and 500 kbps
Set Radio frequencies:
Use this menu to choose one of these sets of frequencies used in the Frequency Hopping Spread Spectrum (FHSS):
2405-2469 hopset #1 : full 2.4GHz frequency band hopset #1
{2405.5;2409.5;2413.5;2417.5;2420.5;2424.5;2428.5;2432.5;2436.5;2439.5;2443.5;2447.5;2451.5;2455.5;24
58.5;2462.5;2466.5 MHz } is the set of frequencies
2405-2469 hopset #2 : full 2.4GHz frequency band hopset #2
{2406.5;2410.5;2414.5;2418.5;2421.5;2425.5;2429.5;2433.5;2437.5;2440.5;2444.5;2448.5;2452.5;2456.5;24
59.5;2463.5;2467.5 MHz } is the set of frequencies
2405-2469 hopset #3 : full 2.4GHz frequency band hopset #3
{2407.5;2411.5;2415.5;2419.5;2422.5;2426.5;2430.5;2434.5;2438.5;2441.5;2445.5;2449.5;2453.5;2457.5;24
60.5;2464.5;2468.5 MHz } is the set of frequencies
2405-2422 hopset : narrow 2.4GHz frequency band #1
{2405.5 MHz; 2406.5 MHz;….2421.5 MHz }
2429-2446 hopset : narrow 2.4GHz frequency band #2
{2429.5 MHz; 2430.5 MHz;….2445.5 MHz }
2452-2469 hopset : narrow 2.4GHz frequency band #3
{2452.5 MHz; 2453.5 MHz;….2468.5 MHz }
The hopset has to be chosen to reduce interference with other radio equipment in 2.4 GHz frequency band.
For example, if a Wifi access point is configured at channel 6, the frequency band of the access point is 2426MHz-
2448MHz. Thus, the 2405-2422 hopset and 2452-2469 hopset have no interference with this Wifi access point.
Set Radio Security Keys :
Use the Hop Sequence and the Synchro Word keys to secure the WTU-518 network.
Use the Hop Sequence key to limit the interference with another Sercel network. The Hop Sequence key defines a
unique frequency sequence. Two different Frequency keys define two frequency sequences, using the same set of 17
frequencies but correlation between the two different sequences is about null.