Lava eSynC-E User manual

eSynC Product Family
Reference Manual
April 5, 2022
Revision C03
Abstract
The eSynC family of products (formally known as LAVASynC+) permits the charging of select
Samsung mobile devices while simultaneously interacting with USB 2.0 accessories.
The eSynC products share the core set of features present in all nSynC products, as well as
providing “extended” features such as battery modulation, screen brightness management, and
improved network operation. All devices supported use the USB-C interface.
Contents
Introduction..................................................................................................................................... 3
System Requirements...................................................................................................................... 4
Product Features.............................................................................................................................. 6
USB Host Operation with Simultaneous Charging .................................................................... 6
USB 2.0 Ports for User Accessories........................................................................................... 7
LAVA Tablet Manager (LTM) Application............................................................................... 7
Battery Modulation..................................................................................................................... 8
Wired Network Operation......................................................................................................... 10
Network Recovery Operation................................................................................................... 11
Screen Brightness Management................................................................................................ 12
Power Options........................................................................................................................... 13
Power-over-Ethernet Support ................................................................................................... 14
System Watchdog Handling ..................................................................................................... 15
Samsung Knox Configure......................................................................................................... 16
Product Versions....................................................................................................................... 16
Connection Descriptions............................................................................................................... 17
USB-C “Mobile Device” Data & Power Output ...................................................................... 17
USB-C “Power Adapter” Input................................................................................................. 17
“Aux. Power Adapter” input..................................................................................................... 18
Barrel Jack “9-36 VDC In”....................................................................................................... 19
USB-A receptacles.................................................................................................................... 19
Status LEDs .............................................................................................................................. 20
“Ethernet” RJ45 Port and Indicators......................................................................................... 21
“PoE-Ethernet” RJ45 Port and Indicators................................................................................. 22
Internal Jumpers........................................................................................................................ 22
Using USB Serial Ports................................................................................................................. 23
Modules: eSynC-1U-OEM and eSynC-BM-OEM....................................................................... 24
LAVA Tablet Manager (LTM) Configuration File...................................................................... 26
Commands and Parameters....................................................................................................... 27
Diagnostic Log File................................................................................................................... 31
Sample LTM_CFG.txt Configuration File ............................................................................... 32

LAVA Computer MFG Inc. eSynC Product Family - Reference Manual –C03
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The “LAVA Device Info” Utility ................................................................................................. 33
The “LTM Setup” Utility.............................................................................................................. 34
Dimensions ................................................................................................................................... 35
Technical Support......................................................................................................................... 36

LAVA Computer MFG Inc. eSynC Product Family - Reference Manual –C03
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Introduction
The eSynC products allow select Samsung mobile devices to operate as a USB Host while
simultaneously being charged. LAVA calls this feature SimulCharge, for simultaneous charging
of a mobile device while working with USB 2.0 accessories.
This document describes the features of the eSynC products in detail.
In addition to the features of the nSynC Product Family, the eSynC products provide extended
features such as battery modulation, screen brightness management, and improved network
operation.
The eSynC features use a combination of hardware and software. The LAVA Tablet Manager
(i.e. LTM) application must be installed to support an eSynC product.
The eSynC products use features specific to a group of Samsung mobile devices.
eSynC Product Family Overview
Product
USB 2.0
Ports
[Type A]
Ethernet
Adapter
Power
over
Ethernet
5 VDC
Input
[USB-C]
9/ 36 VDC
Input
[Barrel]
Description
eSynC-PE
-
YES
YES
Auxiliary
[Micro-B]
-
Ethernet Adapter with PoE
eSynC-E
-
YES
-
YES
-
Ethernet Adapter
eSynC-P2UE
2
YES
YES
Auxiliary
[Micro-B]
-
2-port USB Hub & Ethernet Adapter
with PoE
eSynC-2UE
2
YES
-
YES
-
2-port USB Hub & Ethernet Adapter
eSynC-3U
3
-
-
YES
-
3-port USB Hub
eSynC-vc5UE
5
YES
-
-
Yes
5-port USB Hub & Ethernet Adapter
eSynC-vc3U
3
-
-
Auxiliary
Yes
3-port USB Hub
eSynC-vc2UE
2
YES
-
-
Yes
2-port USB Hub & Ethernet Adapter
eSynC-vc1U
1
-
-
Auxiliary
Yes
1-port USB Hub
eSynC-vcE
-
YES
-
-
Yes
Ethernet Adapter
eSynC-1U-OEM
1
-
-
YES
-
1-port OEM Adapter (board only)
eSynC-BM-OEM
-
-
-
YES
-
Charging-Board Adapter (board only)
Note: eSynC products require the installation and activation of the LAVA Tablet Manager application.

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System Requirements
The eSynC products operate with a group of USB-C mobile devices. These devices must
implement specific aspects of the USB-C Power Delivery (USB-C PD) specification. Please
contact LAVA Sales or Technical Support for the current list of tested devices.
The mobile device requires the installation of the LAVA Tablet Manager application, which is
provided by LAVA. The "eSynC Quick Start Guide" describes the setup procedure for the
eSynC product and the LTM application.
The mobile device must use Android 5.1 or newer for compatibility with LTM v4.** and v5.**.
The eSynC product is connected to a mobile device using a standard USB-C to USB-C cable
provided by the user. The USB-C cable must support both data and charging. The cable may
be up to 1.5 meters (5 feet) in length. The cable need not be electronically marked, as the current
levels are always less than 3 amperes.
The eSynC products work with unrooted mobile devices.
The eSynC Power-over-Ethernet (PoE) models require a suitable Network Switch with PoE
support. A non-PoE Network Switch can use a PoE Power Injector for each port to operate with
an eSynC PoE product. A PoE Power Injector is a standard add-on available from many Network
Switch vendors.
The eSynC models without PoE require a USB Power Supply with a USB-C plug. The
Wall/USB Charger provided with the tablet or mobile phone is an ideal choice. Any USB Power
Supply with sufficient power for the combined requirements of the compatible mobile device
and USB accessories, can be used. The USB Power supply should be able to provide 5 volts
with at least 2 amperes.
The eSynC "vc" products require power to be supplied through a DC barrel jack with a 2-
millimeter positive center pin. The power cable and power supply are supplied by the user. Any
unregulated DC power source can be used from 9 to 36 volts. These products are ideal for
automotive based installations which are based on a 12-volt or 24-volt battery.
LAVA only has access to models from the Canadian market and some U.S. models for internal
testing. A tablet or mobile phone integrator must perform a verification of the device model and
build targeted for their application. LAVA will assist in the testing of other devices provided a
sample is made available. The sample device must be delivered with the intended firmware build
already installed.
The mobile device features used by the LAVA products are not universal. Samsung, for
example, tailors the mobile device firmware to a world region or country. Tablet versions created
by Samsung for mobile carriers do not behave the same as the standard products. You must
verify the behavior of the model of mobile device and firmware build to be used before
committing to any deployment.

LAVA Computer MFG Inc. eSynC Product Family - Reference Manual –C03
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Note: LTM v4.** and v5.** are exactly the same. The only difference is LTM v4.** must be side
loaded, while v5.** is available in the Google Play Store.
Note:
LTM v4.** and v5.** do not require Samsung Knox support, unlike the earlier
versions of LTM.

LAVA Computer MFG Inc. eSynC Product Family - Reference Manual –C03
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Product Features
Overview
The eSynC and nSynC products share the following core features:
USB Host operation with simultaneous mobile device charging
Available with multiple USB-2.0 receptacles
Wired networking (10/100 Ethernet) support
Option for Power over Ethernet (PoE) support
Option to be powered from standard USB Power Adapters
Option to be powered from any regulated 5-volt power supply
Option to be powered from a 12 or 24-volt unregulated DC power source
The eSynC products include the above core features as well as the following extended features:
Support for installations running 24/7
Battery modulation for the tablet and mobile phone longevity
Enhanced Network Management for reliable network operation
Screen brightness control for reduced heat generation
Up to 5 USB-2.0 receptacles
The eSynC extended features rely on the LAVA product working in unison with the LAVA
Tablet Manager application. Installation of the LTM application is mandatory before using an
eSynC product.
USB Host Operation with Simultaneous Charging
The primary feature of all eSynC and nSynC products is to allow the charging of select Samsung
mobile devices while interacting with USB accessories. The LAVA products do not draw power
from the Samsung mobile device and only allow USB accessory operation while being powered
by an external power source.
The compatible mobile devices have been verified to support USB Host operation while also
allowing the device to be charged. The USB-C specification allows for many levels of
functionality to be implemented by each manufacturer. Not all aspects of USB-C and USB-C PD
(Power Delivery) are implemented on a device just because it has a USB-C receptacle.
Note:
If your use case requires USB accessories to be operated with and without an
external power source, please contact LAVA Sales as other LAVA products not
described in this document are designed for this situation.

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USB 2.0 Ports for User Accessories
The LAVA products include an internal USB 2.0 Hub, which is used to connect integrated and
user-supplied USB accessories. Up to five user-accessible USB 2.0 ports are available depending
on which LAVA product is selected.
User accessories are attached to USB 2.0 ports with a standard A-type receptacle. Each
receptacle provides power to each USB Accessory up to a maximum of 500 mA, as per the USB
specification. The power supply used must have sufficient capacity for the mobile device, LAVA
hardware, and USB accessories.
A LAVA product must be powered for a USB-A receptacle to function. The LAVA products
have a dedicated power input and are not intended to draw power from the tablet or mobile
phone.
A power budget must be developed for a system to handle additional USB accessories and the
related cables. Power loss in each cable results in lower voltages at each device. Using self-
powered USB Hubs may be required in some systems, to offload the power supply responsible
for the tablet or mobile phone.
LAVA Tablet Manager (LTM) Application
The LAVA Tablet Manager application must be installed on the mobile device to manage each
LAVA product. The LTM application runs in the background on the mobile device. LTM works
with Android v5.1.1 and newer.
LTM is available through the Google Play Store (LTM v5.**) and is also distributed as part of a
LAVA Software Release Package (LTM v4.**), which includes a copy of the eSTS Installation
Manual. LTM must be used with a LAVA product that is matched to the mobile device being
used. Please contact LAVA sales or technical support for further details at
www.lavasimulcharge.com.
Once LTM is installed, the Product Family, Protection Type, and Ethernet usage are configured
through the built-in setup manager. All other configuration parameters are optional. These steps
are described in detail in the installation manual. No other license or special activation is
required.
During normal operation, the application launches automatically when it detects the LAVA
hardware and is intended to run quietly in the background. If the application is accidentally shut
down, it is woken up within 7 minutes by the recovery timeouts that are built into the LAVA
hardware.
LTM typically operates in a "Background Mode" to ensure that only the customer applications
are seen by the device user. Clicking on the application icon four times within a few seconds
forces the application into the “Configuration Console”, which allows the configuration to be
reviewed or modified. The "Force to Background" option in the overflow menu places LTM
back into its preferred state.

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If LTM is not running, one click of the application icon launches it with the “Configuration
Console”enabled. All LTM protection features are active in both application states. The
configuration portion of LTM allows all common parameters to be set. Specialized parameters
require the configuration file be manually edited on a separate device.
Note:
The LTM application is not a standalone product and requires a LAVA product
to function.
Note:
LTM must be configured with the correct Product Family and Protection Type.
Note:
Failure to install LTM results in USB accessories being briefly disconnected
every 7 minutes when the eSync Timeouts are active.
Note: Although LTM v4.** and v5.** are the same, the application package names for them
are different. If you wish to switch between versions, you must uninstall the app from the mobile
device before installing the other version. Otherwise, there will be a conflict between the two
versions installed. The config file will also be deleted when the app is uninstalled, so please
make note of your settings in the GUI, especially the Product Family and Protection Type,
before switching versions.
Battery Modulation
The Battery Modulation feature helps reduce stress on the device’s battery. Battery Modulation
is a feature in which the battery is charged up to an upper set point, and then allowed to
discharge to a lower set point. This feature electronically mimics the process of charging a
battery and then disconnecting the charger. This behavior follows the expected use case for a
mobile device. After a set number of user-defined charge/discharge cycles, the device is briefly
allowed to charge to 100% to reset the battery calibration.
The LTM application works with the eSynC product to implement the Battery Modulation
feature.
Battery Modulation ensures the device battery never remains at the 100% level for more than a
few minutes over a month, thus preventing overcharging. This behavior makes the LAVA
products ideal for enclosures that run 24 hours a day, 7 days a week. All parameters associated
with the modulation feature are customized in the LTM configuration.
The LTM application presents several battery modulation schemes to deal with the unique
capabilities of each mobile device model. Setting the correct Product Family and Protection
Type is critical for LAVA Battery Modulation to work. The LTM configuration help will
identify which option to use for a given mobile device. The default configuration parameters
associated with Battery Modulation are:
product-family=2
btty-protection-type=1
btty-upper-threshold=75
btty-lower-threshold=45
btty-cycle-limit-on-start=2

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btty-cycle-limit=50
The “product-family=2” is always used for eSynC products.
The “btty-protection-type” keyword selects between two possible battery protection schemes, to
adapt to the capabilities of the mobile device. The “LTM Configuration Help” will identify
which option to use for a given mobile device.
The above sample sets the upper and lower battery charge thresholds at 75% and 45%
respectively. Every 50 charge cycles the battery is allowed to charge to 100%. Within a few
minutes of reaching the 100% level, the device starts discharging down to the 45% level.
Periodically charging to 100% permits recalibration of the battery level to battery voltage by the
device.
The "btty-cycle-limit-on-start=2" results in the device being allowed to charge up to 100% two
cycles after the LTM application is started. The "btty-cycle-limit-on-start" command allows for
an early battery calibration for situations where the device might have been turned off for some
time. Using "btty-cycle-limit-on-start" is optional.
Only the “btty-protection-type=1” option can be used with eSynC Mk1 products. Using “btty-
protection-type=2” with an eSynC Mk1 results in the battery charging to 100%.
Use of “btty-protection-type=1” and “btty-protection-type=2” is supported by eSynC Mk2
products.
The eSync Mk1 and Mk2 can be identified by the LED startup sequence, the Hardware
Information section of LTM, or through the optional LAVA Device Info utility.
Note: The LAVA-Device-Info utility and is a useful addition for LTM 3 users. However, it is
redundant for users of LTM v4.** and v5.** as its features are now built into the app.

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Wired Network Operation
Many eSynC products provide a 10/100 Fast Ethernet wired interface. This feature relies on
standard support built into the tablet or mobile phone. A wired networking solution is more
reliable than Wi-Fi and has greater security.
Devices supporting Wired Ethernet operation provide options for dynamic address setup (DHCP)
and static address setup. The choice of address management is a Network system issue. The
Ethernet addressing configuration is performed within the device setup menu.
The device setup and status for the Ethernet port are located in the Connections > More networks
> Ethernet menu. The Ethernet menu can only be entered when a powered Ethernet adapter is
present. The standard device options permit the use of static address assignments or dynamic
address assignments via DHCP. The menu reports if the Ethernet adapter is active.
When using DHCP, the device attempts to fetch the network addressing information from a
DHCP server. If the addressing information is not located within the timeout period, the device
makes no further attempts. The user must manually retrigger the Ethernet interface to start the
DHCP process. The retrigger is a simple matter of pressing the Ethernet "box" again in the
"More networks > Ethernet" menu. The eSynC Network Recovery automates the network
restart, which is critical for embedding a device in an enclosure or kiosk.
When the user disables the Ethernet adapter via the Connections > More networks > Ethernet
menu, the adapter remains disabled until enabled again by the user.
In some cases, an installation may choose to use Wi-Fi for network access rather than the wired
Ethernet support of the eSynC product. The eSynC product’s Ethernet interface can be disabled
when Wi-Fi is enabled using the configuration command “wifi-overrides-ethernet=1”.
The “permit-ethernet=0” command disables the Ethernet interface. Ethernet is permitted by
default.