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eSynC Product Family 

Reference Manual

 

April 5, 2022 

Revision C03 

 

 

Abstract

 

The eSynC family of products (formally known as L) 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

 

Summary of Contents for eSynC-E

Page 1: ...ng 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 Opti...

Page 2: ...Family Reference Manual C03 2 Vulcan St Toronto ON Tel 1 416 674 5942 www lavalink com Canada M9W 1L2 Toll Free US Canada 800 241 5282 2 of 36 The LAVA Device Info Utility 33 The LTM Setup Utility 34...

Page 3: ...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...

Page 4: ...d 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 choi...

Page 5: ...42 www lavalink com Canada M9W 1L2 Toll Free US Canada 800 241 5282 5 of 36 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 Googl...

Page 6: ...eration 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 bef...

Page 7: ...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 Goog...

Page 8: ...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 the...

Page 9: ...alibration 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...

Page 10: ...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 serv...

Page 11: ...restarted the device has lost the wired network connection The DHCP behavior is a serious issue for an enclosure based system There is no software only solution for a non rooted device The LTM applic...

Page 12: ...of 100 yet significantly reduces heat generation During the night time window selecting a very low screen level reduces heat generation dramatically Setting a level of 15 allows the screen to be seen...

Page 13: ...ranty The eSynC PE and eSynC P2UE support Power over Ethernet PoE and therefore can operate using power provided over the network cable Using PoE can resolve the problem of getting power to a device w...

Page 14: ...f power for the device the eSynC and attached USB accessories The 10 4 watt limit allows the unit to be treated as a PoE Class 0 device by a PoE switch The eSynC PoE Power Supply is capable of supplyi...

Page 15: ...ct SLD mechanisms These features add an extra level of protection for some rare conditions seen in a few device models The Low Level Detect LLD monitors the device battery level In some rare cases the...

Page 16: ...cts referred to in this document as the eSynC Mk1 and eSynC Mk2 The eSynC Mk1 is the original series of products The second generation products are referred to as eSynC Mk2 and were introduced in earl...

Page 17: ...on eSynC products without Power over Ethernet or a built in voltage converter This input provides power for the eSynC product the device and for attached USB accessories The eSynC product does not fu...

Page 18: ...uct the cable quality and length must be selected to ensure that the voltage reaching each accessory is at least 4 75 volts as a general rule Many devices such as mice operate at a lower voltage than...

Page 19: ...n the LAVA product is 80 efficient at full load therefore 12 watts into the product results in 10 watts for system use A power supply with a higher power rating than the required minimum is always per...

Page 20: ...AVA product is waiting for a mobile device to be attached 1 second blink on both LEDs and when one LED is on the other is off The LAVA product has detected a mobile device and is waiting for LTM to co...

Page 21: ...onnected to the device The USB Activity flashes when there is traffic between the device and an eSynC product The Link Activity is a green indicator The Link Activity is solid green when the Ethernet...

Page 22: ...the eSynC PE and eSynC P2UE products This port is attached to a Network Switch which has been configured for PoE operation Use of a PoE Injector allows a non PoE switch to be used with the eSynC PE a...

Page 23: ...is type of device makes this type of interface still attractive in many devices The majority of serial ports use a device referred to as a Universal Asynchronous Receiver Transmitter or UART for short...

Page 24: ...smartphone When combined with the LTM application both products support the extended features of Battery Modulation and Screen Brightness Management The eSynC 1U OEM has an internal USB 2 0 Hub which...

Page 25: ...least 5 volts for proper device operation Any 5 volt regulated DC power supply can be used with these boards including USB Power banks The preferred voltage at the board input is 5 1 to 5 25 volts The...

Page 26: ...be modified using a text editor on a PC as most devices do not have a suitable editor installed Changes to the file are copied to the InternalStorage Android data com lava tabletmanager7 files folder...

Page 27: ...45 btty cycle limit on start x The number of charge cycles after startup before a full charge cycle is forced For a full charge cycle the btty cycle lower threshold and btty cycle upper threshold are...

Page 28: ...1 time The default is 1 which disables the brightness timers brightness level1 x Screen brightness used by brightness level1 time The permitted range is 0 to 100 The default is 15 Invalid values are r...

Page 29: ...00 The permitted range is 0 to 100 A 0 disables logging The default is 0 user debug x This command enables a set of Toast based status messages suitable for the user The messages report the general st...

Page 30: ...es Comments 0 No status messages 1 LTM ethernet connected Reported when the Ethernet state changes from not connected to connected 1 LTM ethernet not connected Reported when the Ethernet state changes...

Page 31: ...ata The first line after the header contains a short title for each field which is useful for some graphing applications Diagnostic Log File Field Descriptions Field Title Description 1 ID The ID fiel...

Page 32: ...e When product family 1 is used board type defines the protection type When product family 2 is used btty protection type defines the protection type LTM START product family 2 btty protection type 1...

Page 33: ...C and eSTS products have an internal 2 pin jumper labeled MODE When this jumper is installed the extended features of the product are disabled and the product cannot be detected by this utility The ju...

Page 34: ...LTM The LTM v1 v2 and v3 had no display component built in The LTM v4 and v5 now have built in support for configuration management which eliminates the need for an external utility Also LTM v4 and v5...

Page 35: ...1 5282 35 of 36 Dimensions 38 2 mm 0 5 mm 43 0 mm 1 0 mm 83 0 mm 0 5 mm 97 0 mm 0 5 mm Figure 5 Case dimensions for the eSynC 3U E PE 2UE P2UE vc3U vc2UE vc1U and vcE 38 2 mm 0 5 mm 43 0 mm 1 0 mm 127...

Page 36: ...l 1 416 674 5942 www lavalink com Canada M9W 1L2 Toll Free US Canada 800 241 5282 36 of 36 Technical Support LAVA Technical support is open from 9 00 am to 5 00 pm Monday through Friday EST Telephone...

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