Справочник Пользователя для OPISYS USHR-700L
1.2.3. Function
Page 4
I.
S/D ( Auto Shut Down Mode)
Built-In Automatic Self-Monitoring Features for Anti-Oscillation:
Automatic Shut Down Mode operates when oscillation in the uplink and downlinks bands
are detected, thus terminates potential harmful interference to wireless networks.
are detected, thus terminates potential harmful interference to wireless networks.
•
1 MINUTE Non-Operative Mode on the first initial oscillation detection.
•
Default Algorithm Re-Set Mode when Auto S/D Mode is cleared
•
Complete Shut Off Mode on the 5th repetition of Auto S/D Mode status.
BAND 12 & BAND 13 PATH are independently monitored and operated.
II. Intermodulation Gain & Power Limit Control
II. Intermodulation Gain & Power Limit Control
Uplink & Downlink PATH formulate consistent link balance to regulate its
input and output gain & power limits.
input and output gain & power limits.
max UL gain < - 34dB – RSSI + MSCL (“ FCC 13-21,(i), 78p”)
RSSI : the downlink composite received signal power at the donor port
( calculation value : DL Output – DL Gain )
MSCL : Mobile Station and repeater service port minimum Coupling Loss
( setting value )
BAND 12 & BAND 13 PATH gain limits are independently controlled
III. ALC (Automatic Level Control)
III. ALC (Automatic Level Control)
ALC is implemented due to the higher rate of signal changes and wide dynamic range in
LTE Bands, the Automatic Gain Power Control (AGC) may experience off set time
synchronization error.
synchronization error.
•
Optimal Window Size (frequency range) sets the optimal level to increase
faster response to LTE Frequency changes on the basis of gain power
control via signal input/output differential calculation
faster response to LTE Frequency changes on the basis of gain power
control via signal input/output differential calculation
BAND 12 & BAND 13 PATH gain limits are independently controlled
IV. UL PATH Automatic Sleep Mode
If coverage is non-existent (Zero Area Zone), Uplink PATH shuts off as
IV. UL PATH Automatic Sleep Mode
If coverage is non-existent (Zero Area Zone), Uplink PATH shuts off as
A
Harmful Interference Avoidance
protocol and minimizes its power
consumption.