User Manual
Table Of Contents
- OMU Manual, rev H
- OMU Product Description and User's Manual
- 1 Repeater Technology
- 2 Product and System Description
- 3 Monitoring and Control
- 4 Installation
- 4.1 Unpack the OMU
- 4.2 Mount the OMU
- 4.3 Ensure Proper Grounding
- 4.4 Attach Cabling
- 4.5 Start-up the OMU
- 4.6 Initiate Local Communication
- 4.7 Configure the OMU
- 4.8 Set Up OMU-Repeater System
- 4.9 Balance the System
- 4.10 Initiate Fibre Loss Compensation
- 4.11 Set up Remote Communication
- 4.12 Integrate into the AEM
- 4.13 Installation Examples
- 5 Maintenance
- 6 Specifications
- RMC Short Guide
- Common Commands and Attributes 1.3.0 v1.2.pdf
- 1 Overview
- 2 Axell Wireless Versus Avitec
- 3 Version Compatibility
- 4 Using Commands and Attributes
- 5 Built in Help System
- 6 External Alarms, DOOR and Controller Temperature
- 6.1 CTM – Controller Temperature
- 6.2 DOO – displays status of the door alarm source
- 6.3 DST – displays status of the door
- 6.4 EAC – External alarm configuration
- 6.5 EAD – External alarm description
- 6.6 EST – External Input Status
- 6.7 EX1 – status of external alarm input 1
- 6.8 EX2 – displays status of external alarm input 2
- 6.9 EX3 – displays status of external alarm input 3
- 6.10 EX4 – displays status of external alarm input 4
- 6.11 EXT – External alarm pin configuration
- 7 Alarm Configurations
- 7.1 ACL – Alarm Class Configuration
- 7.2 AC1 – Compressed Alarm Severity and Alarm Class Configurations
- 7.3 AL1 - Compressed Alarm Format
- 7.4 AL2 - Compressed Alarm Format
- 7.5 AL3 - Compressed Alarm Format
- 7.6 ALA – Configuring the alarm parameters
- 7.7 ASE – Alarm Severity Configuration
- 7.8 LIT – Alarm Log Item
- 7.9 LLN – Alarm Log Length
- 7.10 MAR – Minimum Alarm Repetition Cycle
- 7.11 MNR – Maximum Number of Alarm Retransmissions
- 7.12 NUA – Next Unacknowledged Alarm
- 7.13 RCA – Repetition Cycle for Alarms
- 7.14 RLY – Relay Status
- 7.15 RPL - Relay Polarity
- 7.16 RTN – Relay Test On Interval
- 7.17 RTF – Relay Test Off Interval
- 7.18 ACT ACK – Acknowledge Alarm
- 7.19 ACT CLO – Clear Alarm Log
- 7.20 ACT TRE – Test relay
- 7.21 LOGDUMP ALARM
- 8 Modem and Communication Settings
- 8.1 ADD – SMS Access List
- 8.2 ASC – Address of Service Center
- 8.3 CDE – Communications Device Enabled
- 8.4 CSL – Communications Support List
- 8.5 DEV – Device type and Communications Method
- 8.6 DDS – Device Description
- 8.7 CMD – Communications Method Description
- 8.8 LPC – Last Power Cycling of modem
- 8.9 MAD – Main Address
- 8.10 MCT – Modem Connect Time
- 8.11 MIS – Modem Initialization String
- 8.12 MPE – Automatic Power Cycling Enabled
- 8.13 MPT – Automatic Power Cycling Timepoint
- 8.14 NCT – Network Connect Time
- 8.15 PIN – PIN-code for communications device
- 8.16 PIS – PIN-code Supported by device
- 8.17 PPO – Primary Port Number
- 8.18 ROP – Repeater to OMC password
- 8.19 SAC – SMS Acknowledge Configuration
- 8.20 SFT – Secondary Fallback Timer
- 8.21 SMC – Address of SMS Service Center
- 8.22 SPO – Primary Port Number
- 8.23 SSC – Secondary Service Center
- 8.24 ACT MDS - Poll for Modem Status
- 8.25 ACT RCD – Reset Communications Device
- 8.26 ACT UPA – Use Primary Address
- 8.27 ACCESS MODEM
- 8.28 MODEM
- 8.29 MP – Modem Power
- 8.30 TRACE MODEM
- 9 Heartbeat Report Configurations
- 9.1 HIT – Heartbeat Log Item
- 9.2 HLN – Heartbeat Log Length
- 9.3 HOS – Heartbeat on System Startup
- 9.4 MRR – Maximum Report Retransmission
- 9.5 RCH – Repetition Cycle for Heartbeats
- 9.6 RCR – Repetition Cycle for Reports
- 9.7 ACT HBT – Request Heartbeat Transmission
- 9.8 ACT CHB – Clear Heartbeat Log
- 9.9 LOGDUMP HEARTBEAT
- 10 System ADMINISTRATION and Inventory Management
- 10.1 ADC – Active Devices Count
- 10.2 DAT – System Date
- 10.3 DDI – Detailed Device Information
- 10.4 HDC – Hardware Device Count
- 10.5 HDI – Hardware Device Item
- 10.6 HWV - Hardware Version
- 10.7 LTG – Lock Tag
- 10.8 MDL – Target Model Identification
- 10.9 MDD – Target Model Description
- 10.10 MSG - Message Counter
- 10.11 RID – Repeater ID
- 10.12 SHW – Supported Hardware
- 10.13 SIS – System Information String
- 10.14 SIT – System Initialization Timepoint
- 10.15 SUT – System Uptime
- 10.16 SWV – Software Versions
- 10.17 TAG – Repeater Tag
- 10.18 TIM – System Time
- 10.19 ACT RHW – Action Reset Hardware
- 10.20 HARDWARE REPLACE
- 10.21 SYSADMIN – Log in as system administrator
- 10.22 REBOOT – Reboot the system
- 11 User Administration and Session Configurations
- 12 AXELL WIRELESS Repeater System Settings
- 12.1 System Node Identification
- 12.2 Node Addressing
- 12.3 Master Slave Common Configurations
- 12.4 Slave Specific Configurations
- 12.5 Node Master Configurations
- 13 Network Configurations
- 13.1 DAS – Dynamic Address Status
- 13.2 DNS – DNS Address Configurations
- 13.3 EEN – Ethernet Enabled
- 13.4 GWY – Default Gateway
- 13.5 MAC – MAC address
- 13.6 NID – Network Interface Descriptions
- 13.7 NIL – Network Interface List
- 13.8 NIC – Network Interface Configuration
- 13.9 NRS – Network Restart
- 13.10 SSR – Supported Services
- 13.11 SRV – Service Configurations
- 13.12 IFCONFIG
- 13.13 PING
- 13.14 TRACEROUTE
- 13.15 NETWORK
- 14 GPRS CONFIGURATIONS
- 14.1 GPR – GPRS attribute
- 14.1.1 GPR AAD – Authorization address
- 14.1.2 GPR ACL – Authorization Client
- 14.1.3 GPR APN – Access Point Name
- 14.1.4 GPR APPLY – Apply changes made to the GPRS configurations
- 14.1.5 GPR ASC – Authorisation Secret
- 14.1.6 GPR ASV – Authorization server
- 14.1.7 GPR ATH – Authentication method
- 14.1.8 GPR CHANGES – Changes made in GPRS configuration
- 14.1.9 GPR CPI – CHAP Interval
- 14.1.10 GPR CTY – GPRS connection type
- 14.1.11 GPR EXF – GPRS extra flags
- 14.1.12 GPR MDS – GPRS modem dial string
- 14.1.13 GPR MDT – Modem timeout
- 14.1.14 GPR MRU – Maximum Receive Unit
- 14.1.15 GPR MTU – Maximum Transmission Unit
- 14.1.16 GPR PTR – Persistence timer
- 14.1.17 GPR RTE – Default route enable
- 14.1.18 GPR STATUS – Reports status of GPRS interface
- 14.1.19 GPR RESTART – Restart GPRS
- 14.2 GPRS – Handle GPRS functionality
- 14.3 TRACE GPRSDEBUG – Debug GPRS attach
- 14.1 GPR – GPRS attribute
- 15 Firmware Upgrade
- OMU Commands and Attributes 1.0.0 v1.0
- 1Overview
- 2Version Compatibility
- 3Using Commands and Attributes
- 4Built in Help System
- 5OMU CommanDS
- 6Alarm Configurations
- 6.1AC2 – Compressed Alarm Severity and Alarm Class Configurations
- 6.2AL4 - Compressed Alarm Format
- 6.3AL5 - Compressed Alarm Format
- 6.4AL6 - Compressed Alarm Format
- 6.5 ALL - Compact Message Status Parameters in Optical Master Unit
- 6.6BAT – Status of battery charge
- 6.7COM – Status of Communication with Active Devices
- 6.8CRC – Status of EEPROM CRC
- 6.9PW1 - Status of Power Supply 1
- 6.10PW2 - Status of Power Supply 2
- 6.11PW3 - Status of Power Supply 3
- 6.12PW4 - Status of Power Supply 4
- 6.13RBT – Status of Radio Board Temperatures
- 6.14RSP – Optical Master Unit Status Parameters
- 6.15RXO – Status of Received Optical Level
- 6.16SZP – Status of Pilot Tone Generator Synthesizer
- 6.17TEM – Status of Controller Temperature
- 6.18TXO – Status of Transmitted Optical Level
- 7Opto Interface Configurations
- 8RF-Related Configurations
- 9Temperature And Power Supply Levels
- 10Data Communication Settings
- 11Alarm Attribute Thresholds
- 11.1BAT – Battery Level
- 11.2COM – Communications with Active Devices
- 11.3CRC – EEPROM CRC Check in Active Devices
- 11.4ILD – Input Signal Level Downlink
- 11.5NCO – Node Communications Status
- 11.6PW1 – Power Supply 1
- 11.7 PW2 – Power Supply 2
- 11.8PW3 – Power Supply 3
- 11.9PW4 – Power Supply 4
- 11.10RBT – Radio Board Temperature
- 11.11RXO - Recieved Optical Level
- 11.12SZP – Synthesizer Pilot Tone Generator
- 11.13TEM – Controller Temperature
- 11.14TXO – Transmitted Optical Level
- 12Heartbeat Format
- OMU Product Description and User's Manual
- Safety Instructions and Warnings
- Definitions, Abbreviations and Acronyms
- Contact Information
Optical Master Unit
PRODUCT DESCRIPTION AND USER’S MANUAL
© Axell Wireless Ltd A1829300 rev H 66 (86)
4.9 Balance the System
To get an appreciation of the signal levels, a link budget should be prepared before the system is made
operational. This is one example with a BTS at the OMU site.
BTS
Fiber Fed Repeater
OMU
Directional
Couplers
~10 km
Repeater
-8 dB
Antenna or
leaky cable
A
B
C
G
H
Loss
in
fiber
cable
Variable
Attenuator
D
-8 dB
Duplex
Filter
Hybrid
Combiner
-1 dB
E
F
h
g
f
c
a
Additional OMUs in
cascade
e
o
e
o
o
e
o
e
Duplex
Filter
Variable
Attenuator
Several parameters need to be considered in an OMU-Repeater installation.
Downlink Path
Important is to feed the Fibre Optic Converters in the OMU with the right signal level in the downlink, position
F above. This level should be close to -3dBm for optimal performance. It may not exceed +2dBm.
Link from A to F:
Directional coupler (between A and B), normally 30dB attenuation
Hybrid combiner (between B and C), normally 2 dB attenuation
Duplex filter (between C and D), normally 1 dB attenuation
Variable attenuator in OMU (between D and E), can be set to max 21 dB in 3 dB steps
Splitter (between E and F), 8 dB attenuation
=> -30dB + -2dB + -1dB + -8dB = -41dB attenuation between A and F
If the BTS has a +43dB output power the variable attenuator in the OMU can be set to 6, which gives an input
level to the fiber optic converters of -4dB. This attenuation is set in the box within the “Splitter” field, see
below.