User's Manual

CDMA REPEATER
5.2.2 Shutdown Function
When output of repeater exceeds set up limit, it is to function Shutdown for stable protection..
A. Handling Procedure
a. Operate when output value of Down Link and Up Link is 3dB over ALC set up limit.
b. Inspect output for 5 seconds to find that 5 second output is operation condition.
Then do PAU OFF to perform the first Shutdown move.
c. Perform PAU ON move 5 seconds after Shutdown move.
d. Inspect output for 4 seconds again after waiting for stable output for 1 second.
e. Perform c, d and e move for 3 times.
f. After 3rd move the PAU ON waiting time is 5 minutes. With Shutdown condition
afterward, proceed complete Shutdown state.
g. On complete Shutdown state the user should directly switch the repeater OFF or ON,
or set up PAU ON to come out of complete Shutdown state.
B. Notes
a. Do not operate when ALC Operation set up is OFF.
b. Down Link and Up Ling are independently operated.
5.2.3 Oscillation Check Function
A. Handling Procedure
a. Switch ON/OFF oscillation check function with GUI.
b. Inspect the section between -250KHz and +250KHz based on the frequency found
through channel scanning.
c. Measure the oscillation detection value while moving by 50KHz from -250KHz to
+250KHz of oscillation check frequency.
d. Find the minimum and maximum value from values measured from c.
e. When the difference between the maximum value and minimum value is 2dB
greater than the setting value, the gain is compensated as much as the difference.
f. When it is -2dB less than the setting value, the gain is compensated as much as -
0.5dB.
B. Notes
a. Do not operate while channel scan is operating.
b. When ALC is operating, gain correction value should not exceed ALC set up level.