K2L MOST150 User manual

ISBN: 978-1-5224-1852-8
Copyright © 2015 - 2017 K2L GmbH & Co. KG ("K2L"). All rights reserved.
Please make sure that all information within a document marked as 'Confidential' or 'Restricted Access' is handled solely in accordance with the agreement pursuant to which
it is provided, and is not reproduced or disclosed to others without the prior written consent of K2L. The confidential ranking of a document can be found in the footer of every
page. This document supersedes and replaces all information previously supplied. The technical information in this document loses its validity with the next edition. Although
the information is believed to be accurate, no responsibility is assumed for inaccuracies. Specifications and other documents mentioned in this document are subject to change
without notice. K2L reserves the right to make changes to this document and to the products at any time without notice. Neither the provision of this information nor the sale
of the described products conveys any licenses under any patent rights or other intellectual property rights of K2L or others. The products may contain design defects or errors
known as anomalies, including but not necessarily limited to any which may be identified in this document, which may cause the product to deviate from published descriptions.
Anomalies are described in errata sheets available upon request. K2L products are not designed, intended, authorized or warranted for use in any life support or other
application where product failure could cause or contribute to personal injury or severe property damage. Any and all such uses without prior written approval of an officer of
K2L will be fully at your own risk. The K2L logo is a trademark of K2L. Other names mentioned may be trademarks of their respective holders.
K2L disclaims and excludes any and all warranties, including without limitation any and all implied warranties of merchantability, fitness for a particular purpose, title, and
against infringement and the like, and any and all warranties arising from any course of dealing or usage of trade. In no event shall K2L be liable for any direct, incidental,
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tort; negligence of K2L or others; strict liability; breach of warranty; or otherwise; whether or not any remedy of buyer is held to have failed of its essential purpose, and whether
or not K2L has been advised of the possibility of such damages.
© 2015 - 2017 K2L GmbH & Co. KG DS60001342C
K2L - USER’S GUIDE
MOST150 E-O Converter - Simplex Variant
*X13611*

MOST150 E-O Converter
DS60001342C 2 © 2015 - 2017 K2L GmbH & Co. KG
K2L - USER’S GUIDE
Table of Contents
Chapter 1 Preface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 Intended Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Scope of Delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3 Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3.1 Handling Precaution and Prohibitions of Lithium Ion & Lithium Ion Polymer Rechargeable
Cells and Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3.1.1 Storage.......................................................................................................................5
1.3.1.2 Safety Precaution and Prohibitions ............................................................................6
1.3.2 Safety Handling Procedure for the Transporter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.4 Definitions of Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Chapter 2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1 Steps How To Connect the Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.2 Test Report. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Chapter 3 Board Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1 Charger and Battery Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.2 Physical Layer Conversion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Chapter 4 Hardware Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.1 Front Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.1.1 Electrical Coaxial Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.1.2 Status LEDs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.1.2.1 Interconnect..............................................................................................................16
4.1.2.2 MOST .......................................................................................................................16
4.1.2.3 Charger.....................................................................................................................17
4.1.2.4 Power .......................................................................................................................17
4.2 Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.2.1 Power Supply and Power Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.2.2 Interconnect. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Chapter 5 Technical Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.1 Mechanical Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.2 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.3 Optical Characteristics (Interconnect) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Chapter 6 Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Chapter 7 Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

MOST150 E-O Converter
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List of Figures
Figure 2.1 MOST Network Implementation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 2.2 MOST Network Implementation with DUT Isolation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 3.1 MOST150 E-O Converter PCB Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 4.1 Front Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 4.2 LEDs on the Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 4.3 Rear Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

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List of Tables
Table 1.1 Definitions of Terms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 4.1 Electrical Coaxial Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Table 4.2 Interconnect LED Status Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Table 4.3 MOST Network LED Status Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Table 4.4 Charger LED Status Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 4.5 Power LED Status Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 4.6 Power Supply and Power Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Table 4.7 Interconnect. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Table 5.1 Mechanical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Table 5.2 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Table 5.3 Optical Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Table 6.1 Troubleshooting Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Table 7.1 Customer Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

MOST150 E-O Converter
© 2015 - 2017 K2L GmbH & Co. KG 5 DS60001342C
K2L - USER’S GUIDE
Chapter 1 Preface
1.1 Intended Use
K2L’s MOST150 E-O Converter is intended for use during development, test, and analysis
of multimedia products and systems based on MOST®technology (data rate: 150 Mbit/s,
electrical cPHY layer) by people with experience in developing multimedia devices.
Operation of the MOST150 E-O Converter is supported only when used in conjunction with
the components provided by K2L, which are included in the product deliverables.
The original state of the product should not be altered; otherwise product functionality and
performance cannot be guaranteed, and user safety may be at risk.
1.2 Scope of Delivery
The delivery of the MOST150 E-O Converter Kit covers the following:
MOST150 E-O Converter (qty: 2)
Optical cable set 40 m (qty: 1)
Coaxial cables 1 m (qty: 4)
Converter cable Fakra to SMA ~0.1 m (qty: 4)
Power supply (qty: 1)
Printed user manual (qty: 1)
Check your shipment for completeness. If you have any objections direct them to
[email protected]. Providing the delivery note number eases the handling.
1.3 Warnings
There are four rechargeable batteries (Lithium-ion rechargeable cells, e.g., Samsung model:
ICR18650-30B) assembled in each MOST150 E-O Converter. As a consequence specific
legal battery directives have to be followed and are described below.
1.3.1 Handling Precaution and Prohibitions of Lithium Ion & Lithium Ion
Polymer Rechargeable Cells and Batteries
Inaccurate handling of lithium ion and lithium ion polymer rechargeable battery may cause
leakage, heat, smoke, an explosion, or fire.
This could cause deterioration of performance or failure. Please be sure to follow instructions
carefully.
1.3.1.1 Storage
Store the battery at low temperature (below 20 °C is recommended), low humidity, no dust
and no corrosive gas atmosphere.

MOST150 E-O Converter
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1.3.1.2 Safety Precaution and Prohibitions
Danger
Electrical misusage
— Use dedicated charger.
— Use or charge the battery only in the dedicated application.
— Don't charge the battery by an electric outlet directly or a cigarette lighter charger.
— Don't charge the battery reversely.
Environmental misusage
— Don't leave the battery near the fire or a heated source.
— Don't throw the battery into the fire.
— Don't leave, charge or use the battery in a car or similar place where inside of temperature
may be over 60 °C.
— Don't immerse, throw, and wet the battery in water / seawater.
Others
— Don't fold the battery cased with laminated film such as pouch and Polymer.
— Don't store the battery in a pocket or a bag together with metallic objects such as keys,
necklaces, hairpins, coins, or screws.
— Don't short circuit (+) and (-) terminals with metallic object intentionally.
— Don't pierce the battery with a sharp object such as a needle, screw drivers.
— Don't heat partial area of the battery with heated objects such as soldering iron.
— Don't hit with heavy objects such as a hammer, weight.
— Don't step on the battery and throw or drop the battery on the hard floor to avoid mechanical
shock.
— Don't disassemble the battery or modify the battery design including electric circuit.
— Don't solder on the battery directly.
— Don't use seriously scared or deformed battery.
— Don't put the battery into a microwave oven, dryer, or high-pressure container.
— Don't use or assemble the battery with other makers' batteries, different types and/or models
of batteries such as dry batteries, nickel-metal hydride batteries, or nickel-cadmium batteries.
— Don't use or assemble old and new batteries together.
Warning
Stop charging the battery if charging isn't completed within the specified time.
Stop using the battery if the battery becomes abnormally hot, order, discoloration, deformation, or
abnormal conditions is detected during use, charge, or storage.
Keep away from fire immediately when leakage or foul odors are detected. If liquid leaks onto your
skin or cloths, wash well with fresh water immediately.
If liquid leaking from the battery gets into your eyes, don't rub your eyes and wash them with clean
water and go to see a doctor immediately.
If the terminals of the battery become dirty, wipe with a dry cloth before using the battery.
The battery can be used within the following temperature ranges. Don't exceed these ranges.
— Charge temperature ranges: 0 °C ~ 45 °C
— Discharge Temperature ranges: -20 °C ~ 50 °C
Store the battery at temperature below 50 °C
Cover terminals with proper insulating tape before disposal.

MOST150 E-O Converter
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Others
Keep the battery away from babies and children to avoid any accidents such as swallow.
If younger children use the battery, their guardians should explain the proper handling method and
precaution before using.
Before using the battery, be sure to read the user's manual and precaution of its handling.
Before using charger, be sure to read the user's manual of the charger.
Before installing and removing the battery from application, be sure to read user's manual of the
application.
Cover terminals with insulating tape before proper disposal.
While the battery is charged, used and stored, keep it away from object materials with static electric
chargers.
1.3.2 Safety Handling Procedure for the Transporter
Quarantine
Packages that are crushed, punctured or torn open to reveal contents should not be transported. Such
packages should be isolated until the shipper has been consulted, provided instructions and, if
appropriate, arranged to have the product inspected and repacked.
Spilled Product
In the event that damage to packaging results in the release of cells or batteries, the spilled products
should be promptly collected and segregated and the shipper should be contacted for instructions.

MOST150 E-O Converter
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1.4 Definitions of Terms
For better understanding of the following chapters, this section provides explanation to
special terms, used in the description of the MOST150 E-O Converter user manual.
Table 1.1 Definitions of Terms
TERM / ABBREVIATION DESCRIPTION
avg. average
BCI Bulk Current Injection
CC Constant Current
CV Constant Voltage
EMC Electromagnetic Compatibility
E-O Electrical - Optical
ESD Electrostatic Discharge
cPHY electrical coaxial Physical Layer
DDepth
DUT Device Under Test
H Height
MOST®Media Oriented Systems Transport
PCB Printed Circuit Board
PLL Phase-locked Loop
qty Quantity
RE Radiated Emissions
SFP Small Form-factor Pluggable, optical network connection between the two
MOST150 E-O Converters
SMA Sub-Miniature A
WWidth

MOST150 E-O Converter
© 2015 - 2017 K2L GmbH & Co. KG 9 DS60001342C
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Chapter 2 Introduction
In order to validate electromagnetic compatibility (EMC) and conduct operational electrostatic
discharge (ESD) tests for MOST devices, it is necessary to isolate the device under test (DUT) from
other nodes within the MOST network (see Figure 2.1). Isolation involves eliminating the influence of
the other nodes as well as external environmental factors from the DUT. In the case of EMC testing,
environmental isolation is achieved through the use of an anechoic chamber, which is a shielded room
that is designed to attenuate environmental noise sources. For operational ESD testing, the transient
voltages induced on the electrical cPHY network need to be confined to the DUT. This is accomplished
by electrically isolating the DUT’s electrical cPHY network from the other MOST devices.
K2L developed an easy to use product that fulfills all the requirements mentioned above: the MOST150
E-O Converter Kit. It assists in isolating the DUT during a functional network test by converting a
MOST network (data rate: 150 Mbit/s, electrical cPHY layer) into an optical physical layer network
interface. Figure 2.2 shows how this is achieved by using two MOST150 E-O Converter devices. One
MOST150 E-O Converter is connected electrically to the MOST network devices outside of the test
environment (this MOST150 E-O Converter is connected to a power supply and automatically charges
the rechargeable batteries that are assembled inside) while the other MOST150 E-O Converter is
connected electrically to the MOST network (data rate: 150 Mbit/s, electrical cPHY layer) DUT inside
of the test environment (this one operates with batteries inside the chamber). The network is completed
when an optical connection is made between the two MOST150 E-O Converters.
Figure 2.1 MOST Network Implementation

MOST150 E-O Converter
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Note: Ideally both devices can be exchanged after a measurement, meaning that the box outside the
chamber charges its batteries during operation.
The major features of the MOST150 E-O Converter include:
Conversion between MOST electrical cPHY network signals and optical physical layer network
signals
Minimal influence on MOST electrical cPHY network messages
Protection of stimulus equipment from harsh test environments
Optical interface operable at lengths up to 40 m
Aluminum enclosure with battery power supply to reduce emissions and improve immunity
On-board battery charger circuit
Simultaneous battery charging and powering of the device
Low battery indicator
Figure 2.2 MOST Network Implementation with DUT Isolation
MOST
Network
Device
(DUT)
MOST150
E-O Converter
#2
Isolated EMC/ESD
Test Environment
MOST
Network
Device
#1
MOST
Network
Device
#2
MOST150
E-O Converter
#1
Optical Physical
Layer Network
MOST®Network
(Data rate: 150 Mbit/s,
Layer: electrical cPHY)
MOST®Network
(Data rate: 150 Mbit/s,
Layer: electrical cPHY)

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2.1 Steps How To Connect the Devices
Devices used in the test system example (Figure 2.2) are connected using the following steps. All
devices have to be switched off.
1. Inside the isolated EMC/ESD Test Environment:
Connect the device under test (DUT) to the MOST150 E-O Converter #2 with two coaxial cables
(front panel). Use the converter cables Fakra to SMA to connect the coaxial cable to the MOST150
E-O Converter. The MOST150 E-O Converter #2 is running on battery power.
2. Pass between isolated EMC/ESD Test Environment and test area outside:
Connect the duplex optical fiber cable to each of the MOST150 E-O Converters (Interconnect on
the rear panel), ensuring that the LC connectors are inserted correctly.
3. Outside the isolated EMC/ESD Test Environment:
Connect the customer MOST network devices to the MOST150 E-O Converter #1 using two coaxial
cables (front panel). Use the converter cables Fakra to SMA to connect the coaxial cable to the
MOST150 E-O Converter. The MOST150 E-O Converter #1 is running with power supply.
4. Turn on all of the devices. The MOST network and Interconnect LEDs on the MOST150 E-O
Converters will turn off once the network is locked.
5. The system is now ready for testing.
2.2 Test Report
The following tests have been performed for the MOST150 E-O Converter:
Radiated Emissions (RE)
Bulk Current Injection (BCI)
Electro-Static Discharge (ESD)
Contact [email protected] if you are interested in getting the test reports.

MOST150 E-O Converter
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Chapter 3 Board Details
An overview of the MOST150 E-O Converter PCB is shown in Figure 3.1. The MOST150 E-O
Converter provides a single power jack for supplying power to the entire MOST150 E-O Converter.
Alternatively, the MOST150 E-O Converter power can be supplied by internal rechargeable batteries.
Power from the battery or external power supply, can be completely disconnected from the functional
circuitry by the power switch. The power switch must be in the ON position in order for the MOST150
E-O Converter to function.
Figure 3.1 MOST150 E-O Converter PCB Block Diagram
K2L MOST150 E-O Converter
Charger
Circuit Board Power Supply
Power In
Interconnect
Up – On
/
Down – Off
Power
Charger
MOST®
Interconnect
Batteries
Coax
Front End
Coax
Coax
PLL
PLL
MOST
network
connector

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3.1 Charger and Battery Operation
An on-board charger circuit is provided, which allows the battery to charge when a DC power supply
is present at the power jack. The charger circuit automatically turns on when a DC power supply is
inserted into the power jack, independent of the power switch. When the fast-charge conditions are
met, the charger circuit begins to fast-charge the battery. Fast-charge is active when the Charger LED
(orange) is on. If the battery reaches a temperature greater than 50 °C the charger circuit exits the
fast-charge cycle. The fast-charge cycle typically lasts 4.5 to 5 hours when the battery is completely
discharged. The end of the fast-charge cycle is indicated by a green Charger LED. Anytime that the
green Charger LED is shown and the DC power supply is connected to the MOST150 E-O Converter,
the charger circuit trickle-charges the battery. Trickle-charge mode helps to maintain a full charge on
the battery without over-charging it. Inserting a DC power supply into a MOST150 E-O Converter with
a full charge on its battery results in a short fast-charge cycle.
Note: The MOST150 E-O Converter uses four Li-Ion hydride rechargeable batteries, therefore it is
not necessary to fully discharge the battery before they can be recharged.
When the power switch is in the ON position and the DC power supply is connected to the power jack,
the DC power supply powers the board supplies (3.3 V and 1.8 V) for the functional circuitry (data
conversion). Operation of the MOST150 E-O Converter while the battery is charging can be a useful
feature during compliance testing. The MOST150 E-O Converter outside of the test environment can
be powered by a DC power supply, which ensures that its batteries maintain a full charge. When the
batteries of the MOST150 E-O Converter inside of the test environment are low, indicated by the Power
LED (orange) on, the inside and outside MOST150 E-O Converters can be switched to allow the empty
battery to charge while testing continues. Switching the MOST150 E-O Converters in this manner
results in minimal down time, and can easily be done between tests, i.e., do not connect the MOST150
E-O Converter to a power supply in the middle of a test. Once the DC power supply is disconnected,
the charger circuit shuts down. If the power switch is ON when this occurs, the board power supplies
will continue to be powered by the battery. A full battery charge typically provides 10 hours of power
for MOST150 E-O Converter operation. After approximately eight hours, the low battery indicator
Power LED (orange) turns on. This indicates that there are less than two hours of battery life remaining
and that the battery should be recharged.
Note: To conserve battery charge, the power switch should be turned OFF whenever tests are not
conducted.

MOST150 E-O Converter
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3.2 Physical Layer Conversion
The primary function of the MOST150 E-O Converter is network signal conversion between electrical
coaxial and optical physical layers. The MOST150 E-O Converter incorporates two PLLs to achieve
this conversion. The network frame rate of both electrical cPHY and optical physical layer networks is
48 kHz. One PLL receives the incoming cPHY network signal and retransmits it as the outgoing optical
physical layer network signal (Interconnect); the other PLL receives the incoming optical physical layer
network signal (Interconnect) and retransmits it as the outgoing electrical cPHY network signal. This
electrical cPHY to optical physical layer conversion is accomplished by re-clocking the MOST network
(data rate: 150 Mbit/s) signal while maintaining data integrity.
The optical physical layer signal is a pseudo MOST150 network interface that uses Small Form-factor
Pluggable (SFP) transceivers. Since the optical physical layer network produces no emissions and is
isolated electrically, it can be routed through the EMC chamber wall and connected to another
MOST150 E-O Converter, where it is converted back to an electrical cPHY network signal. The optical
physical layer interface consists of a 850 nm wavelength optical physical layer transceiver with a LC
duplex receptacle. This allows the signal to be transmitted over multi-mode, 50/125 µm glass optical
fiber cable for distances up to 40 m. The MOST150 E-O Converters can be integrated into larger
chambers without adding any significant delay to the network.
The incoming electrical cPHY (MOST) and optical physical layer (Interconnect) network signals are
checked for coding errors and network unlocks. Any time an electrical cPHY network error occurs, the
MOST LED shows an error (red, refer to Section 4.1.2.2, "MOST," on page 16). Any time an optical
physical layer network error occurs, the Interconnect LED shows an error (red, refer to Section 4.1.2.1,
"Interconnect," on page 16).

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Chapter 4 Hardware Description
4.1 Front Panel
Figure 4.1 depicts the MOST network connector (electrical coaxial connector) and the status LEDs of
the MOST150 E-O Converter. Figure 2.2 on page 10 shows how the MOST150 E-O Converter can be
connected.
All components of the front panel are described in Table 4.1 from left to right:
Ground connector
Electrical coaxial connectors
Status LEDs
4.1.1 Electrical Coaxial Connectors
The orientation of the Rx and Tx path is shown on the top.
Figure 4.1 Front Panel
Table 4.1 Electrical Coaxial Connectors
INTERFACE COLOR DESCRIPTION
GND Interface to be connected to ground.
Coaxial out - Coaxial Tx interface to be connected to the MOST system (data rate:
150 Mbit/s) basing on electrical cPHY layer.
Connector type: 73251-2201 (Molex)
Coaxial in - Coaxial Rx interface to be connected to the MOST system (data rate:
150 Mbit/s) basing on electrical cPHY layer.
Connector type: 73251-2201 (Molex)

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4.1.2 Status LEDs
The MOST150 E-O Converter provides four status LEDs: Power, Charge, MOST, and Interconnect.
The status LEDs are shown in Figure 4.2 and described in detail from left to right in the sections below.
4.1.2.1 Interconnect
Table 4.2 informs about possible states of the Interconnect LED, i.e., the status of the optical
connection between the two MOST150 E-O Converters:
4.1.2.2 MOST
Table 4.3 informs about possible states of the MOST network LED:
Figure 4.2 LEDs on the Front Panel
Table 4.2 Interconnect LED Status Information
COLOR/STATUS DESCRIPTION
Off No error
Red Error, possible reasons are:
SFP module does not receive an optical signal.
The signal is too weak.
Table 4.3 MOST Network LED Status Information
COLOR/STATUS DESCRIPTION
Off No error
Red MOST network error e.g., unlock
PowerChargerMOST® Interconnect

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4.1.2.3 Charger
On the top of the MOST150 E-O Converter a graphical explanation shows which status information
can be indicated by the Charger LED. Table 4.4 provides details:
4.1.2.4 Power
On the top of the MOST150 E-O Converter a graphical explanation shows which status information
can be indicated by the Power LED. Table 4.5 provides details:
Table 4.4 Charger LED Status Information
COLOR/STATUS SIGN AT THE TOP DESCRIPTION
Off No DC power supply is connected to the power jack.
Orange The charger circuit is in charge mode.
Green The battery is fully charged.
Red Error, possible reasons are:
The temperature of the charger is too high.
Battery is defect. Contact technical support at: [email protected]
Table 4.5 Power LED Status Information
COLOR/STATUS SIGN AT THE TOP DESCRIPTION
Off The MOST150 E-O Converter is not powered. There are two reasons:
The power switch is Off.
The battery is defect or depleted.
Orange The battery has less than two hours of charge remaining i.e., the
voltage is lower than 3.6 V. Use the DC power supply to charge the
battery.
Green The MOST150 E-O Converter is powered either
via the power jack (power switch is on) or
via the battery (the voltage is higher than 3.6 V).
Red The battery voltage is lower than 2.8 V but not depleted.

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4.2 Rear Panel
Figure 4.3 depicts the rear panel of the MOST150 E-O Converter.
All components of the rear panel are described in the sections below:
Power Supply
Power Switch
Internal connector (without description)
Interconnect
How the MOST150 E-O Converter can be connected is shown in Figure 2.2 on page 10.
4.2.1 Power Supply and Power Switch
Figure 4.3 Rear Panel
Table 4.6 Power Supply and Power Switch
INTERFACE PIN/POSITION DESCRIPTION
Power supply 12 V power supply.
Connector type: Binder 99-3400-100-03 (or equivalent).
The figure on the left shows the pin assignment as it is visible on the
rear panel. For further details refer to Table 5.2 on page 20.
1 12 V: Power supply
2 Reserved
3 GND: Ground
Power Switch Up On
Down Off

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4.2.2 Interconnect
Table 4.7 Interconnect
INTERFACE PIN/POSITION DESCRIPTION
Interconnect Optical network connection, SFP interfaces are used to connect the
two MOST150 E-O Converters.
Connector type of the SFP transceiver: LC
For further details refer to Table 5.3 on page 21.

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Chapter 5 Technical Specification
5.1 Mechanical Characteristics
The table below covers mechanical characteristics of the MOST150 E-O Converter.
5.2 Electrical Characteristics
The table below covers electrical characteristics of the MOST150 E-O Converter.
Table 5.1 Mechanical Characteristics
PARAMETER VALUE UNIT
Dimensions (H x W x D) 33 x 121 x 190 mm
Weight 750 g
Ambient Temperature Range -20..+50 °C
Table 5.2 Electrical Characteristics
PARAMETER MIN TYP MAX UNIT CONDITIONS
MOST150 E-O Converter:
Input voltage 9 18 V (DC)
Input current 2.5 A (DC) Vin = 12 V (DC)
Operating temperature 0 45 °C Charge
-20 50 °C Discharge
Charge cycle:
Input current 2.0 A (DC) Power switch off
Charge time 270 300 min
Battery pack (4 cells, in parallel):
Output voltage 2.75 3.78 4.2 V (DC)
Capacity 12 Ah
Discharge cut-off voltage 2.75 V
12 VDC power supply
Input voltage 100 240 V (DC) 50-60 Hz
Input current 1.5 A (AC)
Output voltage 12 V (DC)
Output current 3.75 A (DC)