Cambium Networks cnReach N500, User Manual

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cnReach N500 User Guide
Technical Reference
phn-4673_002v000 (March 2018)
3-11
Attention
MMS should be configured with FHSS modulations 57 MSK, 114 MSK, 153 MSK & 229 MSK
OR DTS modulations 884 BPSK, 1768 QPSK, 2651 8PSK, 3535 16QAM and 3535 16PSK. It is
not recommended to mix FHSS and DTS modulations.
Whether FHSS or DTS modulations are used, the following radio settings that affect transmission timing
must be the SAME in ALL radios within ALL sub-networks in the system;
- Frequency Band and Excluded Frequencies
- Hop Pattern (1 is recommended for MMS)
- Access Point Transmit Rate
- End Point Transmit Rate(s)
- Max Payload Bytes
- Network Type; PTP or PMP
- Network Radius
MMS may operate in one of two modes;
• Generate; the system Access Point internally “generates” the 1Hz timing signal for all other
radios in the network(s).
•
External; a 1PPS “external” trigger signal from a GPS receiver is used to synchronize the 1Hz
timing signal for all other radios in the network(s). See IO Connections for wiring info. The
Cambium Networks uGPS is an option for providing the 1PPS sync signal.
Attention
MMS should be configured with FHSS modulati0ns 57 MSK, 114 MSK, 153 MSK & 229 MSK
OR DTS modulations 884 BPSK, 1768 QPSK, 2651 8PSK, 3535 16QAM and 3535 16PSK. It is
not recommended to mix FHSS and DTS modulations.
Whether FHSS or DTS modulations are used, the following radio settings that affect transmission timing
must be the SAME in ALL radios within ALL sub-networks in the system;
- Frequency Band and Excluded Frequencies
- Hop Pattern (1 is recommended for MMS)
- Access Point Transmit Rate
- End Point Transmit Rate(s)
- Max Payload Bytes
- Network Type; PTP or PMP
- Network Radius
MMS may operate in one of two modes;
• Generate; the system Access Point internally “generates” the 1Hz timing signal for all other
radios in the network(s).
•
External; a 1PPS “external” trigger signal from a GPS receiver is used to synchronize the 1Hz
timing signal for all other radios in the network(s). See IO Connections for wiring info. The
Cambium Networks uGPS is an option for providing the 1PPS sync signal.