Trango Systems, Inc. GigaPlus User Manual Rev 3.1 32
2.0 Wireless Operation Detail
Channel Bandwidth
The system supports the following channel bandwidths:
3.5 MHz 25 MHz
5.0 MHz 27.5/28 MHz
7 MHz 30 MHz
8.33 MHz 40 MHz
10 MHz 50 MHz
12.5 MHz 55/56 MHz
13.75/14 MHz 80 MHz
20 MHz
The speed is changed via the management interface using the speed command or a
drop down box in the web interface. Both sides of the link must be changed
independently to ensure the RF link is established.
Modulation
The following modulation levels are supported within each of the channel bandwidths
shown above:
QAM256
QAM128
QAM64
QAM32
QAM16
QPSK
The modulation is changed via the management interface using the speed command or
a drop down box in the web interface. Both sides of the link must be changed
independently to ensure the RF link is established.
Mean Squared Error (MSE)
Mean Square Error (MSE) is similar to Signal-to-Noise Ratio (SNR) except that it accounts
for distortion and interference in addition to noise power.
Distortion may come from several sources such as bad Ethernet cables (poor shield,
damaged, or low quality), path degradations such as multipath, or Fresnel zone
encroachment.
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