User guide

Canopy System User Guide Configuring a BH Timing Slave for the
Destination
pmp-0229 (Mar 2013)
365
For example, a PTP 20 Mbps BH has a video camera connected to the BH Slave (BHS) uplink.
To check if packets are being lost at the BHS RF interface the operator should check the
“outdiscards Count” at the Statistics->Radio page of the BHS. If this count is incrementing, then
packets are being lost at the RF interface of the BHS and the Large VC data Q should be enabled.
In the figure below, the outdiscards Count shows 455 discard events since the counter was reset,
indicating that probably system performance would be improved by the Large VC data Q.
External Antenna Gain
This parameter applies to connectorized radios (for use with external antenna) only. Using Table
57 as a guide, type in the dB value by which to reduce Dynamic Frequency Selection (DFS)
sensitivity to radar signals.
Table 57: Recommended External Antenna Gain values for BHS
Module Type
Recommended
Setting
PTP 100 with 9 dB Canopy LENS 9
PTP 100 with standard 18 dB reflector 18
PTP 100 connectorized with 15.5 dBi antenna
and 0.5 dB cable loss
15
The value of this parameter does not affect transmitter output power. This parameter is present in
only connectorized radios (for usage with an external antenna).
Transmitter Output Power
Nations and regions may regulate transmitter output power. For example
• Connectorized radios require the operator to adjust power based on installed antenna gain to
ensure regulatory compliance.
• Legal maximum allowable transmitter output power and EIRP (Equivalent Isotropic Radiated
Power) in the 2.4-GHz frequency band varies by country and region. The output power of
Series P9 2.4-GHz modules can be adjusted to meet these national or regional regulatory
requirements.
• Countries and regions that permit the use of the 5.4-GHz frequency band (CEPT member
states, for example), generally require equipment using the band to have adjustable power.
The professional installer of the equipment has the responsibility to
• maintain awareness of applicable regulations.
• calculate the permissible transmitter output power for the module.
• confirm that the initial power setting is compliant with national or regional regulations.