Nikrans MA-250GW, Руководство по установке

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Repeater’s ports description
1. Outdoor port: connected with the outdoor antenna by cable
2. Indoor port: connected with indoor antenna directly or by cable
3. DC IN: connected with power supply.
Accessories selection
Choosing accessories pay attention to the two characteristics – frequency and impedance. All accessories shall support the repeater’s
frequencies. For example, if the repeater’s frequency is GSM900, all the accessories must support the GSM900 frequency.
Repeater Settings
Indicator Light Instructions
• There are 5 indicator lights: PWR (power), ALM (alarm), three signal strength indicators.
• Power light is always on (green).
• ALM light is red. When the booster works normally, this light is off, when the booster suffers from self-oscillation or input
signal is too strong, this light is flicking. In this case the power turns off automatically and restarts after 30seconds. After
repeating 5 times, the light turns on again, and it will restart after 1 hour. If the problem still exists, the light will be
flicking again.
• There are totally 3 signal strength indicators, they indicate signal strength as: 0dBm, 5dBm, +10dBm, no matter of what
frequency is the signal that reaches the booster, that light will be on. The light colors are yellow (0dBm), green (5dBm),
blue (10dBm).
Troubleshooting
• When the ALM light is flicking or on, and the booster has self-oscillation issue, it indicates the wrong installation of
indoor and outdoor antenna. In this case, please, read antenna installation instructions again and re-install the