User's Manual

Commands
SkyZhone 45 Installation Guide
45
D
R
AFT
Setting the transmit signal strength
Transmit power output level is controlled by the length of the IDU/ODU
connecting cable and by the transmit attenuator setting. The length of the
cable that connects the IDU and OCU must be considered when the power
setting is selected.
Table 14 is based on a 100 ft cable length. If the cable length is 50 ft, transmit
power must be decreased by 3 dB. If the cable is 200 ft long, increase the
transmit power by 3 dB. If it is 300 ft long, increase the transmit power by 6
dB.
This command programs the transmit attenuator in the ODU. The HEX
setting 00 is for full power and 1F is for full attenuation. This establishes the
antenna output power. Table 14 shows the output in dBm and the resultant
Effective Isotropic Radiated Power (EIRP) for all three antenna sizes. EIRP is
calculated by substracting 1 dB loss in the antenna cable from the antenna
gain.
Caution: If a message displays “Not Allowed” then that attenuator
setting cannot be used with the antenna. The installer is legally
responsible for using an appropriate output power setting.
This example sets the transmit attenuator for a TX output of -2dBm at the
antenna port:
@ S T 0 0 0 0 0 A ! <Enter>
A05 5.755 GHz 5.280 GHz B05 5.280 GHz 5.755 GHz
A06 5.760 GHz 5.285 GHz B06 5.285 GHz 5.760 GHz
A07 5.765 GHz 5.290 GHz B07 5.290 GHz 5.765 GHz
A08 5.770 GHz 5.295 GHz B08 5.295 GHz 5.770 GHz
A09 5.775 GHz 5.300 GHz B09 5.300 GHz 5.775 GHz
A10 5.780 GHz 5.305 GHz B10 5.305 GHz 5.780 GHz
A11 5.785 GHz 5.310 GHz B11 5.310 GHz 5.785 GHz
A12 5.790 GHz 5.315 GHz B12 5.315 GHz 5.790 GHz
A13 5.795 GHz 5.320 GHz B13 5.320 GHz 5.795 GHz
A14 5.800 GHz 5.325 GHz B14 5.325 GHz 5.800 GHz
A15 5.805 GHz 5.330 GHz B15 5.330 GHz 5.805 GHz
A16 5.810 GHz 5.335 GHz B16 5.335 GHz 5.810 GHz
A17 5.815 GHz 5.340 GHz B17 5.340 GHz 5.815 GHz
Table 13: Channel Center Frequencies (Continued)
Channel Transmit center
frequency
Receive center
frequency
Channel Transmit center
frequency
Receive center
frequency