User's Manual

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G DL and UL Path Control allows the user to toggle on or off the power amplifiers.
G DL and UL Gain is available when AGC mode is off. The user may enter gain values manually.
Manual gain control is an alternative to autonatic gain control(AGC). Manual gain is disabled
(grayed out) when AGC mode is on. Gain cannot be controlled manually above the available
gain found on the status page. The system will not allow gain to be increased such that
maximum output power(30dBm) is exceeded.
G Gain Tracking sets UL gain equal to DL gain. The feature helps maintain forward and reverse
link ballance. The function control is grayed out when AGC mode is on.
G Automatic Gain Control :
 In contrast to manual gain control, automatic gain control (AGC) sets gain such that the
desired amplifier output level (dBm) is automatically set.
 The user controls gain by adjusting the AGC level. The user may set the level from 0dBm to
30dBm. AGC can be used to control the signal level radiated from the server antennas.
 AGC Window Size: Set AGC range of 1~10dB.
Ex 1) System Gain 85dB, Input Power -55dBm, AGC Level 30dBm, AGC Window Size 3dB
If Input Power is -50dBm, System Gain is 80dB and Output Power 30dBm,
If Input Power is -55dBm, System Gain is 82dB and Output Power 27dBm
If Input Power is -56dBm, System Gain is 85dB and Output Power 29dBm
AGC Window size = AGC Operation Range
Æ
27~30dBm
Ex 2) System Gain 85dB, Input Power -55dBm, AGC Level 30dBm, AGC Window Size 5dB
If Input Power is -50dBm, System Gain is 80dB and Output Power 30dBm.
If Input Power is -55dBm, System Gain is 80dB and Output Power 25dBm.
If Input Power is -56dBm, System Gain is 85dB and Output Power 29dBm.
AGC Window size = AGC Operation Range
Æ
25~30dBm
 AGC may also be used to match the repeater to a DAS (distributed antenna system). AGC level
may be restricted by available gain and DL input power.
G UL Gain offset is used in conjuction with AGC to reduce the amount of amplification in the
reverse direction (uplink). In most cases UL offset is set to 0dB.
G Automatic Shutdown (ASD):
 ASD temporarily shuts down the amplifier if the ASD level is exeded. It is not necessary to turn
off ASD. ASD events are stored in the alarm hostory log. Repeated ASD events will eventually
shutdown the amplifier permanently and trigger the external shutdown lamp.
 ASD Level is set to 33dBm by default. It is not necessary to change the default level.
 Alarm Control
G Alarm response time may be set between 1 and 5 minutes.
G Alam Mask allows the user to customize the type of alarms sent to the SNMP server when
remote monitoring is in use.