ALxxF Microwave Radio Indoor Unit (IDU) Users Manual - Meconet

ALxxF Microwave Radio
Indoor Unit (IDU)
Users Manual
ALCOMA spol. s r.o.
Habartovska 313
152 00 Prague 5
Tel: +420-602619655
Revision 2
1 June 2009
ALCOMA Proprietary Page 1 of 16

Table of Contents
1. ALXXF PRODUCT DESCRIPTION 3
1.1. Overview 3
1.2.
1.2.1.
1.2.2.
1.2.3.
1.2.4.
1.2.5.
1.2.6.
1.2.7.
Front Panel Interfaces 7
T1/E1 Ports.............................................................................................................................. 7
Ethernet Transport Ports.......................................................................................................... 7
Ethernet Management Ports .................................................................................................... 8
Overhead/Hot Standby Interface ............................................................................................. 8
Command Line Serial Interface .............................................................................................. 9
DC Power...............................................................................................................................10
ODU Interface........................................................................................................................11
2. SETUP AND OPERATION 13
3. CLI TEXT MENU CONTROL AND STATUS SOFTWARE INTERFACE 15
ALCOMA Proprietary Page 2 of 16

1. ALxxF Product Description
1.1. Overview
The ALxxF serves as the Indoor Unit of a point-to-point microwave radio
system designed for operation in the 7 to 38 GHz radio frequency band. Key
features and functions are as follows:
• Line interface and conditioning functions necessary for transport of up to
four PDH T1/E1 channels
• Ethernet transport via two front panel 100BaseT RJ-45 ports. The IDU
can be configured for standalone Ethernet transport, or a combination of
T1/E1 and Ethernet transport. VLAN security features and Ethernet port
rate controls.
• Digital modem functions with configurable modulation modes of QPSK,
16QAM, 32QAM, 64QAM, 128QAM and 256QAM.
• Configurable forward error correction with settable interleaver depth
(latency)
• Management interfaces include front panel RS-232 serial port and two
Management Ethernet ports and Web based GUI interface.
o Web based security user authentication
o Advanced link performance monitoring, including data log and
event logs
o Downloadable firmware upgrade feature via Ethernet
management ports
o Link status display of local and remote terminals
o Local and remote control of terminals via Ethernet management
ports
o Software selection of multiple versions of ODU’s
• On-board Ethernet Switch together with dual management Ethernet ports
supports daisy-chaining of Ethernet Management
• Overhead admin serial channel interface (transported as side-channel
over the link)
• SNMP alarm features and user settable heartbeat for use with trap server.
• Two FormC general purpose relays. Two Alarm Bi-level inputs
• Hot Standby control and status interface allows for Protected Mode
operation.
ALCOMA Proprietary Page 3 of 16

• Wide-mouth 21 to 60V DC Power interface is configurable via internal
switch for negative or positive voltage operation 1
• All Outdoor Unit (ODU) interface signals are multiplexed onto front-panel
N-type connector interface
• Front panel LEDs indicate Power-on, Alarm and Fault status
1
Prototype DC power polarity configured via jumpers on Power Converter Board. Production version
will replace jumpers with slide switch.
ALCOMA Proprietary Page 4 of 16

ODU I/F
(N-Type)
BPF
BPF
BPF
BPF
LPF
Power
Conversion
DC Power
+V
-V
GND
ADC
DAC
ASK Tlm
Demod
ASK Cmd
Mod
Relay Controls
Relay
3 3
Alarm Bi-level Inputs
HSBY/Aux (DB-26)
Signal Processing
Admin. OH Serial Channel
HSBY I/O
2 2 4
Proc Bus
µP
Craft (DB-9)
Figure 1 ALxxF Functional Block Diagram
MII
MDC
MII
Ethernet
Switch
Quad
Magnetics
Quad Ethernet
RJ-45 Ports
E1/T1
LIU
Quad
Magnetics
Quad E1/T1
RJ-48 Ports
ALCOMA Proprietary Page 5 of 16
MDC
Data I/O
Expansion
Interface
Cntrl/Status

DC Power
F1 F2
ODU
Power
Alarm
Fault
CLI
Modem
OH/Hsby
Eth
Mgmt
Eth
Mgmt
Eth
1
Eth
2
T1/E1
P1
T1/E1
P2
T1/E1
P3
T1/E1
P4
Figure 2 ALXXF Front Panel
ALCOMA Proprietary Page 6 of 16

1.2. Front Panel Interfaces
1.2.1. T1/E1 Ports
The T1/E1 ports are 8-pin modular jacks with standard RJ-48 pinouts as
shown in Figure 3 and Table 1 below. Transport mode is software
configurable to support one to four T1 channels or 1 to 4 E1 channels. Lines
are matched to 100 ohm in T1 mode and 120 ohm in E1 mode.
Figure 3 Pin Definition for 8-pin Modular Jack (as seen looking into the port)
1.2.2. Ethernet Transport Ports
Pin Signal Name
1 RX, Ring, -
2 RX, Tip, +
3 Shield/Return/Gnd
4 TX, Ring, -
5 TX, Tip, +
6 Shield/Return/Gnd
7 NC
8 NC
Table 1 T1/E1 RJ-48 Pinout
The two Ethernet transport ports (Enet-1 and Enet-2) provide 10/100BaseT
interfaces with standard RJ-45 pinouts. When the IDU is properly configured,
the IDU provides transport of Ethernet frames ingressed at these ports over
the link to the far side radio. An internal Ethernet switch also provides layer 2
switching functions between these two ports and the far side terminal. The
Ethernet PHYs provide MDI/MDI-X cross-connect with auto-detect, so both
straight-thru and cross cables are accommodated to any other 10/100 Base-
T interface. Ethernet transport is configurable up to 130 Mbps.
Note that Ethernet transport will be enabled with a coming firmware
update.
ALCOMA Proprietary Page 7 of 16

1.2.3. Ethernet Management Ports
The two Ethernet management ports (Mgmt-1 and Mgmt-2) provide
10/100BaseT interfaces to the IDU’with standard RJ-45 pinouts. These ports
allow management access to the IDU’s internal CPU. An internal Ethernet
switch also provides layer 2 switching functions between these two ports and
the far side terminal. The Ethernet PHYs provide MDI/MDI-X cross-connect
with auto-detect, so both straight-thru and cross cables are accommodated to
any other 10/100 Base-T interface.
Note that Ethernet-based management is not yet enabled on the
prototypes. These functions will be enabled with a future firmware update.
1.2.4. Overhead/Hot Standby Interface
The Overhead and Hot Standby signals are provided over a DB-26 interface
with connector pinouts and signal assignments as defined in Figure 4 and
Table 2 below.
9
26
Figure 4 Pinout for High-density DB-26 Connector (as seen looking at front panel)
1
19
ALCOMA Proprietary Page 8 of 16

Pin Signal Name Description
1 Chassis Ground Ground
2 Aux Serial Receive Aux Serial Channel Rx Data (to IDU)
3 Hot Standby 5V Power 5V Power to HSBY Shelf
4 Hot Standby SPI MISO SPI communication bus to/from HSBY Shelf
5 Chassis Ground Ground
6 Hot Standby Serial Transmit Serial communication to HSBY Shelf
7 Hot Standby Shelf Present HSBY Shelf present signal
8 Relay 2 COM Relay 2 COM pin
9 Relay 1 NC Relay 1 NC pin
10 Aux Serial Transmit Aux Serial Channel Tx Data (from IDU)
11 Chassis Ground Ground
12 Hot Standby SPI Clock SPI communication bus to/from HSBY Shelf
13 Hot Standby 3.3V Power 3.3V Power to HSBY Shelf
14 Hot Standby Serial Receive Serial communication from HSBY Shelf
15 Chassis Ground Ground
16 Aux Alarm Input 2 Bi-level alarm 2 input
17 Relay 1 NO Relay 1 NO pin
18 Relay 2 NC Relay 2 NC pin
19 Chassis Ground Ground
20 Hot Standby SPI Sel SPI communication bus to/from HSBY Shelf
21 Hot Standby 5V Power 5V Power to HSBY Shelf
22 Hot Standby SPI MOSI SPI communication bus to/from HSBY Shelf
23 Chassis Ground Ground
24 Aux Alarm Input 1 Bi-level alarm 1 input
25 Relay 2 NO Relay 2 NO pin
26 Relay 1 COM Relay 1 COM pin
Table 2 Overhead/Hot Standby Interface Connector Pinout
1.2.5. Command Line Serial Interface
The CLI interface presents a standard three-wire RS-232 DCE interface on a
female DB-9 connector with connector pinouts and signal assignments as
defined in Figure 5 and Table 3 below. The CLI interface is configured as
follows:
ALCOMA Proprietary Page 9 of 16

• Data rate: 57600 bps
• 1 start bit
• 8 data bits
• No parity
• 1 stop bit
5
9
Figure 5 Pin Definitions for Female 9 Pin Sub-D Connector (as seen by looking at
front panel)
Pin # Signal Name Direction Signal Description
1 NC
2 TXD Out Transmit Data (from IDU)
3 RXD In Receive Data (to IDU)
4 NC
5 GND N/A Ground
6 NC
7 NC
8 NC
9 NC
1.2.6. DC Power
Table 3 CLI Connector Pinout
6
DC Power is provided via a three terminal connector, as indicated in Figure 6.
A switch internal to the IDU must be set to the desired polarity.
For positive voltage operation:
• Internal power switch must be set for “+24V” operation
• Connect positive terminal of external supply to “+V” terminal of
ALXXF
• Connect negative terminal of external supply to “-V” terminal of
ALXXF.
• Connect negative terminal of external supply to “GND” terminal of
ALXXF.
1
ALCOMA Proprietary Page 10 of 16

For negative voltage operation:
• Internal power switch must be set for “-48V” operation
• Connect negative terminal of external supply to “-V” terminal of
ALXXF
• Connect positive terminal of external supply to “+V” terminal of
ALXXF.
• Connect positive terminal of external supply to “GND” terminal of
ALXXF.
+V -V GND
Figure 6 DC Power Connector (as seen from front panel)
Two fuses are accessible from the front panel. One fuse (labeled F1 in
Figure 2) provides short circuit protection when the IDU is configured for
positive voltage operation; the second fuse (F2) provides short circuit
protection when configured for negative voltage operation. In both cases, the
fuse protects both the IDU and the ODU. The fuse holders accommodate
standard 5 x 20 mm fuses. ALXXF units are delivered with 7A fast-acting
fuses installed.
A simplified block diagram of the power converter is provided as Figure 7,
depicting the function of the polarity selection switches and the positioning of
the fuses. In addition to the protection fuses, the production version will also
include electronic protection circuitry designed to protect against certain kinds
of short-circuit events without resulting in blowing either fuse. (Note that this
electronic over-current protection is not yet active in the Prototype Units.)
1.2.7. ODU Interface
The N-Type ODU interface multiplexes the following signals:
• DC power (with polarity determined by internal switch setting as
discussed in Section 1.2.6).
• Transmit modulated IF signal at center frequency 350 MHz (to
ODU)
• Receive modulated IF signal at center frequency 140 MHz (from
ODU)
• OOK ODU command signal at 5.5 MHz center frequency
• OOK ODU telemetry signal at 10 MHz center frequency
ALCOMA Proprietary Page 11 of 16

+V
-V
GND
F1
F2
Pol Sense/ Inrush
Limiting
Pol Sense/ Inrush
Limiting/ OV Prot.
Isolated 5V
Converter
Figure 7 ALXXF Power Converter Simplified Block Diagram
Secondary
Converters
DC to ODU
DC Supply to IDU
ALCOMA Proprietary Page 12 of 16

2. Setup and Operation
To setup a link for operation, proceed with the following steps at each end of the
link:
1. Prior to operation, make certain that IDU is configured (via internal switch
setting) to DC Power polarity required by the ODU. The factory
configuration of the IDU is indicated via marking on the back of the IDU.
WARNING: FAILURE TO FOLLOW THIS STEP MAY DAMAGE THE
ODU.
2. Prior to connecting DC power to the IDU, connect the IDU and ODU via a
50 ohm coaxial cable.
3. Connect the CLI port to a terminal emulator with settings as defined in
Section 1.2.5.
4. Connect an external DC power supply to the IDU front panel interface.
Make certain that the polarity of the external supply matches the
configuration of the IDU (see Section 1.2.6 for details).
5. Configure the IDU to the desired transport mode via the text menu
interface, as described in Section 3. For example, to configure the IDU for
Two T1 Channel Transport, make the following menu selections:
• From the Main Menu select “1) IDU Control / Status”
• From the IDU Control / Status Menu, select “1) Link Configuration”
• From the Link Configuration Menu, select “2” for 2DS1 (T1)
operation. All aspects of the IDU (line interfaces, modulation mode,
FEC, etc…) are automatically configured from this selection.
6. Enter “X” repeatedly to return to the Main Menu.
7. Configure the ODU as desired:
• From the Main Menu select “2) ODU Control / Status”
• From the ODU Control / Status Menu, configure Tx Power, Tx
Channel, and Rx Channel as desired, then enable Tx Power
Enable. (Note that the software is currently designed such that
ODU PA Tx must be explicitly enabled. The software can be
modified to automatically enable the ODU Tx PA upon turn-on if
desired by EMS.)
When both ends of the link have been configured to the same (or consistent)
configurations, acquisition is automatic on both sides. Many aspects of the IDU
status are available via the “Link Status” selection under the “IDU Control /
ALCOMA Proprietary Page 13 of 16

Status” menu. ODU status is available via the “Display Status” menu under the
ODU Control / Status menu.
The table shows the total number of E1’s that can be configured, total data speed
for each type of modulation and bandwidth are shown. All bandwidth not used
for E1 transport can be assigned for Ethernet transport with the iAM-ALXXF IDU.
The Ethernet looks like a single port to the modem. The Ethernet switch can be
programmed to rate limit any, each, or all of its ports. If you don’t limit the input
rate, it will process what it can based on the modem configuration.
Modulation 7.0
B CHANNEL = Channel Bandwidth (MHz)
14.0 28.0
QPSK
16 QAM
32 QAM
64 QAM
4E1
8Mbps
4E1
16Mbps
4E1
16Mbps
4E1
34 Mbps
4E1
34 Mbps
4E1
34 Mbps
4E1
68 Mbps
4E1
68 Mbps
4E1
130 Mbps
ALCOMA Proprietary Page 14 of 16

3. CLI Text Menu Control and Status Software Interface
The prototype Command Line Interface is a simple scrolling Text Menu interface
with structure as depicted in Figure 8. To proceed down any path of the menu
hierarchy, enter the indicated alphanumeric followed by the Return key. From
anywhere in the menu, proceed back up the hierarchy by entering the letter “X”
followed by the Return key.
ALCOMA Proprietary Page 15 of 16

Link Configuration :
Capacity Mod Type
1) 1DS1 QPSK
2) 1DS1 16QAM
3) 1DS1 32QAM
4) 1DS1 64QAM
5) 2DS1 16QAM
6) 2DS1 32QAM
7) 2DS1 64QAM
8) 3DS1 32QAM
9) 3DS1 64QAM
10) 4DS1 64QAM
21) 1E1 QPSK
22) 1E1 16QAM
23) 1E1 32QAM
24) 1E1 64QAM
25) 2E1 16QAM
26) 2E1 32QAM
27) 2E1 64QAM
28) 3E1 32QAM
IDU Control / Status:
1) Link Configuration
2) Link Status
3) Enable Aggreate Loopback
4) Enable Aggreate BERT
5) Expert Menu
6) Save Current Configuration
X) Exit
1
2
1
ODU Control / Status:
1) Set TX Enable
2) Set TX Power
3) Set TX Frequency
4) Set TX Channel
5) Set RX Frequency
6) Set RX Channel
7) Display Version
S) Save Settings
R) Restore Factory
U) Update Status
X) Exit
Link Status:
1) Modem State
2) Modem Configuration
3) Modem Operational Status
4) Modem Link Quality Status
5) Modem BERT Status
6) Loopback/BERT Status
7) LIM A Operational Status
8) LIM B Operational Status
9) LIM A Link Quality Status
A) LIM B Link Quality Status
B) Overhead Link Quality Stats
C) Demod Status
D) RS Decoder Status
E) Constellation
W) Weights
R) Reset Statistics
X) Exit
Main Menu:
1) IDU Control / Status
2) ODU Control / Status
3) Loopbacks
4) BER Testing
5) Test Signals
6) Utilities
2 3
Loopbacks:
1) Modem Loopback Mode
2) Lim A Loopback Mode
3) Lim B Loopback Mode
X) Exit
2 or 3 (Enter Line # 0)
LIM Loopback :
1) Disable Loopback
2) Line-Side Digital Loopback
3) Radio-Side Analog Loopback
4) Radio-Side Digital Loopback
X) Exit
4
BER Testing:
1) LIM A BERT Tx Mode
2) LIM B BERT Tx Mode
3) LIM A BERT Rx Line Select
4) LIM B BERT Rx Line Select
X) Exit
Figure 8 CLI Text Menu Description
5
Test Signals:
1) Transmit single tone
2) Transmit two tone
3) Sweep single tone
4) Sweep single tone and capture ADC
5) Sweep single tone and capture loopback
6) Sweep single tone and capture receiver
7) Capture ADC
8) Capture loopback
9) Capture receiver
A) Capture receiver (Symbols)
X) Exit
Utilities:
1) LEDs
2) REAL TIME CLOCK
3) I2C DEVICES
4) IF PROCESSOR
5) MEMORY DUMPS
6) MODEM TEST
7) FLASH UTILITIES
X) Exit
ALCOMA Proprietary Page 16 of 16
6