Quanum RC-540R FPV receiver
5.8GHz 40 Channel “Racing edition” Diversity Receiver
Service menu manual
How to enter the menu:
While pressing and holding “Enter” button power the receiver ON
The receiver will enter service menu.
Power In –
Power Jack 1.3X3.4mm. Supply voltage 6..18VDC
1.
“Setup Div level”
RSSI LED level
- level of RSSI when Blue LED will turn ON (with presence of video signal
of course). The number is counted in percent’s of full RSSI scale.
DIVERSITY_LVL
- difference in levels of two RSSI-s when the decision of switching will
be made. It is the RSSI hysteresis value. The value is set in percent’s of full RSSI scale.
The less the number is, the less RSSI difference is required to initiate antenna switching.
Setting very low hysteresis value will cause false switching.
DIVERSITY_TIME
- approximately 100ms per point, depends on the many factors, max
is 150ms. Reducing this number will cause switching earlier but as a trade-off -premature
switching or erratic switching back and forth in WiFi dense areas
General rules of settings and recommendations:
Timing of switching depends mostly on
a) How long RSSI1 is higher than RSSI2 consequently (DIVERSITY_TIME)
b) Threshold between RSSI1 and RSSI2 in percents when timer starts counting
time(DIVERSITY_LVL). If threshold is low the timer starts earlier and switching occurs
more often. If threshold is high then there should be more significant difference between
RSSI 1 and 2 to make it switch. The algorithm also analyzes the RSSI to estimate
environment quality - noisy urban or clean rural areas and it affects timings a bit.
Trying different values for these settings you can find the combination that suits your
needs perfectly.
