System Threshold, Output Power And Link Loss - Motorola PTP 300 Series User Manual

For minimum error rates on TDM links, the maximum modulation mode should be limited to
64QAM 0.75.
The values for (BPSK) are static receive sensitivity measurements. The other values are
static receive sensitivity measurements with an AMOD threshold applied. The AMOD
threshold applied is for a benign radio channel.
Field definitions are:
Sensitivity
Sensitivity is defined as the combined receive input signal level on both horizontal and vertical
inputs that produces a Null BER Error ratio of 3x10
Output Power
The output power is for a centre channel in Region 1. The output power will be reduced on the
edge channels and may vary if different region codes are selected.
AMOD Threshold
The AMOD threshold is the combined receive input signal level on both horizontal and vertical
inputs that results in the link consistently entering the receive modulation mode under
consideration as the signal level is increased.
System Threshold
Thresholds for all modes except BPSK are for the relevant link optimization AMOD
thresholds. System threshold for BPSK is the RPSK receive sensitivity.
Max Link Loss
The maximum link loss for each modulation mode is derived from the AMOD threshold for that
mode (sensitivity threshold for BPSK) and the maximum Region 1 centre channel output
power. The figures assume integral antennas are used, with gain 23 dBi (5.8 GHz and 5.4
GHz).
4.9

System Threshold, Output Power and Link Loss

For details of the system threshold, output power and link loss for each frequency variant in
all modulation modes for all available channel bandwidths, refer to:
•
Section 16.2.7 PTP 54300 System Threshold, Output Power and Link Loss
•
Section 16.3.7 PTP 58300 System Threshold, Output Power and Link Loss
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