Andrew Wireless Innovations Group 803D15 User Manual

 

 

M0041AMB.doc 

ID No 7164468

Page 7 

 
The attenuation of the miniRepeater can be set by 
means of a rotary switch. There is a label on the 
miniRepeater that shows the possible positions of the 
rotary switch and the corresponding values of the 
attenuation. The attenuation can be set, using a small 
screwdriver, in the range from 0 dB to 20 dB in steps 
of 2 dB or “auto setup” may be selected. 
 
When auto setup is selected, the miniRepeater will 
automatically set its gain to maximize RF 
performance. The downlink gain will be automatically 
set to operate the repeater at its maximum output 
power, while not exceeding the ALC limit. The uplink 
gain will be set to the value of the downlink path. 
 
If the level of the BTS signal increases, the 
miniRepeater will decrease the gain in the downlink 
and uplink paths automatically. However, the 
miniRepeater will increase the gain again in timely 
intervals of 24 hours if the level of the BTS signal 
decreases. 
 

 

 

 
For alarming and supervision, the miniRepeater is 
provided with an alarming interface represented by 
two LEDs and output contacts: 
 

 

 

 
LED1: 

This three-colour LED provides visual 
equipment status information: 

 

off 

no power feed 

green 

normal operation condition 

orange 

hardware alarm (out of defined power-
window) or LO (Local Oscillator) does 
not lock 

red 

temperature of repeater too high 

 
LED2: 

This one-colour LED provides visual 
information about the ALC-status (Automatic 
Level Control): 

 

off 

normal operation condition 

red 

ALC-Alarm, ALC active 

 
13.2. Output-Contact 

 

a3 GND 

Output1 
(TTL level) 

b3 Heartbeat 

b1

Hardware-
Alarm – C 

Output2 
(Optocoupler 
output) 

b2

Hardware-
Alarm – E 

a1 ALC-Alarm – C 

Output3 
(Optocoupler 
output) 

a2 ALC-Alarm – E 

 

LED 1

LED 2