User's Manual
Table Of Contents
- 1. GENERAL
- 2. INTRODUCTION
- 3. CONNECTION SETUP
- 4. INSTALLATION
- 5. FUNCTIONAL DESCRIPTION
- 5.1. DIGITAL ARCHITECTURE
- 5.2. FEATURES
- 5.2.1. Filters Node M
- 5.2.2. Filters Node C
- 5.2.3. Digital ICE (Digital Interference Cancellation Equipment)
- 5.2.4. VSWR (Voltage Standing Wave Ratio)
- 5.2.5. RSSI (Receive Signal Strength Indication)
- 5.2.6. Alarm Forwarding
- 5.2.7. Downlink Final Amplifier
- 5.2.8. Power Supply Unit
- 5.2.9. Modems
- 5.2.10. Digital Channel Module (DCM)
- 5.2.11. External Alarm Controller - EAC-Board
- 5.2.12. Battery Pack - Battery On/Off
- 5.2.13. UL and DL Duplexer
- 6. MAINTENANCE AND REPLACEMENT
- 7. ILLUSTRATIONS
- 8. INDEX
5 Functional Description
Page 51
5.2.11.2. LEDs - Description
Seven LEDs are included on the EAC-board. They are controlled via the I
2
C bus.
figure 5-18 Function of LEDs on the EAC-board
Colours and illumination functions
No Colour Explanation
1 Yellow
2 Green
Ethernet connector LEDs, see chapter 3.1 Setting up a Local / LAN
Connection from Laptop / PC
3 Green
DL PWR - illuminates when the DL Power is "Good" and the DL is
NOT in battery backup.
4 Green
UL PWR - illuminates when the software on the UL sets a bit in the
FPGA indicating power is "good".
5 Blue
USER1 - illuminates when software activates. The LED is controlled
by software through the I
2
C bus.
6 Red
ALARM - illuminates when a software defined alarm condition exists.
This LED is controlled via the I
2
C bus.
7 Yellow
BBU ACTIVE - when illuminated the DL-DCM is in battery backup
mode.
2
3 4 5 6
7
1