Vislink Strata RX, Техническое справочное руководство

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Routine Operation 3-14
Strata RX
Operator’s Guide/Tech Ref Manual
Blinking LQ
If the LQ reading is blinking on the screen, this
indicates that the LQ has dropped to 4 or below, sometime within
the last 2 minutes. The blinking will automatically stop when 2
minutes have elapsed with an LQ maintained above 4.
Demodulator-Only Systems
The RCL measurement is
performed by the RF circuitry in the RXU. This means if you are
using a demodulator-only system (which will have only an RCU),
your Link Quality readings will not be as accurate, since there
will be no RCL data. In these conditions, the LQ will typically
read 1 - 2 digits above normal.
3.4.5 LQ Action Levels
Table 3-2 describes the actions we recommend at various LQ
levels. These are a good initial guide; you should adjust what
Link Quality is displayed on the Main
Screen.
To lock this screen on the display, do the following:
Push the Control Switch to lock the
display on this screen. Data on
display will continue to update.
To allow the display to show other screens, do the
following:
Push the Control Switch to unlock the
display.
Preset #3
-43.2 dBm LQ7
you do based on your experience.
3.4.6 What Actions to Take
To improve the Link Quality, we suggest the following general
sequence of actions. You should develop your own action plan
so you’re prepared in case LQ begins to fall.
1. Optimize RCL.
-
No signal:
Check channel and frequency - be sure
they match the transmitted signal.
Table 3-2: Actions at Link Quality Levels
LQ
Reading
LInk Quality
Description
Recommended Action
9 Excellent
Link
Quality
None required.
Most transmissions are made
with LQ of about 7.
8 Very Good
Link
Quality
7 Standard
Link
Quality
6 Average
Link
Quality
Begin to take action.
5 Below Average
Link Quality
Rapidly take additional
actions.
4 Poor
Link Quality Immediately take all available
actions.
1 - 3 Unsatisfactory
Link Quality
0 No signal
detected.