OPISYS AVHR-5000N 用户手册
12
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AV
H
H
R
-500
0N
0N
I.
Isolation check mechanism
II.
Oscillation check mechanism
III. Sleep Mode mechanism
IV. ALC(Auto Level Control) mechanism
V.
RF Shut Down mechanism
6. Safeguard features
6.1 Summary
This equipment have functions to protect as follows
.
6.2 Feature
6.2.1 Isolation check mechanism
- The booster automatically checks the isolation by increasing the
DL path gain by 1dB when the power supply is switched on and/or
the oscillation occurs.
It works normally when the isolation is over the maximum gain(48dB)
plus 10dB, 58dB.
6.2.2 Oscillation check mechanism
- Anti-oscillation function is to protect Booster by D/L path off
when oscillation in service. D/L shutdown by isolation check function
when D/L path output power exceed oscillation limit value.
6.2.3 Sleep Mode mechanism
- When there is no U/L path Input signal, Booster shall be shut down
after 30 seconds.
Under the Sleep Mode condition, if U/L path input signal is above
-92dBm, U/L path shall be turned on.
6.2.4 ALC(Auto Level Control) mechanism
- ALC function is always working to protect Booster.
6.2.5 RF Shut Down mechanism
- AMP is automatically shut down when the system output power
exceeds the set point over five seconds.
- The booster automatically checks the isolation by increasing the
DL path gain by 1dB when the power supply is switched on and/or
the oscillation occurs.
It works normally when the isolation is over the maximum gain(48dB)
plus 10dB, 58dB.
6.2.2 Oscillation check mechanism
- Anti-oscillation function is to protect Booster by D/L path off
when oscillation in service. D/L shutdown by isolation check function
when D/L path output power exceed oscillation limit value.
6.2.3 Sleep Mode mechanism
- When there is no U/L path Input signal, Booster shall be shut down
after 30 seconds.
Under the Sleep Mode condition, if U/L path input signal is above
-92dBm, U/L path shall be turned on.
6.2.4 ALC(Auto Level Control) mechanism
- ALC function is always working to protect Booster.
6.2.5 RF Shut Down mechanism
- AMP is automatically shut down when the system output power
exceeds the set point over five seconds.