FREQUENTLY ASKED QUESTIONS OF LAVA PRODUCTS

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The LAVA eSTS Products allows select Samsung tablets to operate as a USB Host while simultaneously being charged. LAVA calls this feature SimulCharge, for simultaneous charging while working with USB accessories.

The USB Standard has the On-The-Go (OTG) feature, in which the tablet detects that a USB Accessory has been plugged in and automatically switches to operate as a USB Host Controller. Not all tablets support the USB OTG feature. When operating as an OTG USB Host, the tablet is expected to supply power to the attached accessories, which means power is drained from the tablet battery.

The STS Products use features specific to a group of Samsung Tablets.

The devices in the test summary have been verified with the eSTS products and LTM Service as of August 2017. LAVA only has access to models from the Canadian market and some U.S. models for internal testing. A tablet integrator must perform a verification of the tablet model and build targeted for their application. LAVA will assist in the testing of other tablets provided a sample tablet is made available. The sample tablet must be delivered with the intended build already installed.

 

The tablet features used by the eSTS Products are not universal across the Samsung Tablet line. Samsung tailors the tablet 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 tablet and firmware build to be used before committing to any deployment.

The devices in the test summary have been verified with the eSTS products and LTM Service as of January 2018. LAVA only has access to models from the Canadian market and some U.S. models for internal testing. A tablet integrator must perform a verification of the tablet model and build targeted for their application. LAVA will assist in the testing of other tablets provided a sample tablet is made available. The sample tablet must be delivered with the intended build already installed.

 

The tablet features used by the eSTS Products are not universal across the Samsung Tablet line. Samsung tailors the tablet 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 tablet and firmware build to be used before committing to any deployment.

The tablet can be located up to 1 meter. (With a few exceptions based on the tablet type.) The eSTS Product is connected to a tablet using the custom Micro USB-B to Micro USB-B 39″ (100 cm) cable provided with the eSTS. This cable must not be extended, as the additional power loss in the wires will result in unreliable tablet charging and operation.

 

The eSTS-1U-OEM and eSTS-BM-OEM products are connected to a tablet using the custom Micro USBB to Micro USB-B 8″ (20 cm) cable provided with the board. This cable must not be extended, as the additional power loss in the wires will result in unreliable tablet charging and operation.

The eSTS to Tablet cable must not be extended, as the additional power loss in the wires will result in unreliable tablet charging and operation.

There are 4 cable lengths.

20 cm/8”

50 cm.

100 cm. /39”

120 cm.

The most common cable is the custom 39” (100 cm) cable provided with the eSTS product provides the connection between the eSTS and the tablet.

No you cannot.

The cable provided is a custom cable.

This is not an option. The tablet must be place a maximum of 1 meter from the LAVA adapter
The distance from the adapter to the power brick is 1 meter or as defined by the original cable provided with the wall brick charger.

No. It is essential to use approved cables and specified lengths or the solution won’t work.

Power into the STS/eSTS adapter must be 5V minimum.

The Samsung Wall/USB Chargers come in a several power ratings, each matched to the original tablet requirements.

The 5V Power Input on the eSTS products can be used with an external USB Power Bank (aka. USB Battery Pack). This ability can be useful in some deployments. The USB Power Bank must be physically removed for recharging.  The models with the 5V Power Input include the eSTS-1U-OEM, eSTS-BM-OEM, eSTS-3U, eSTS-E, and eSTS-2UE.

A self-powered USB Hub can be used to offload the power required by the USB accessories from the power supply running the tablet and eSTS device. A self-powered USB Hub should not draw power from the USB Host Controller but from a dedicated supply. A self-powered USB Hub becomes the power source for the attached USB accessories.

Yes. Requires a connector that provides a USB end point.
Requires a voltage converter. LAVA offers an adapter with the converter or it can be purchased separately.
LAVA offers different options to support this requirement e.g.  voltage converter or PoE.
LAVA offers different options to support this requirement e.g.  voltage converter or PoE.
LAVA offers different options to support this requirement e.g.  voltage converter or PoE.
This functionality is currently under development and anticipated to be available in 2018.
Currently LAVA supports up to 3 USB peripherals. Custom addition of an additional USB peripheral would depend on power USB budget accommodation.

The Battery Modulation feature helps reduce stress on the tablet 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 low 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 tablet. After a set number of user-defined charge/discharge cycles, a “full” cycle is performed to reset the tablet battery calibration.

A wired networking solution is more reliable than WiFi and has greater security.
Many eSTS products provide a 10/100 Fast Ethernet wired interface. This feature relies on standard support from the tablet.
LAVA adapters have a configurable option to manage the screen brightness. The tablet screen is a major power consumer and heat generator within the tablet. If the screen is too bright, the tablet may not be able to charge the battery in SimulCharge Mode.

 

For a given application the optimal screen brightness must be established by the system designer.

Power over Ethernet. A “PoE-ETHERNET” port is present on the eSTS-PE and eSTS-P2UE products
The ETHERNET Port is an IEEE 802.3 10BASE-T / 100BASE-TX compatible Fast Ethernet interface. The Ethernet port accepts a standard RJ45 connector. The ETHERNET Port is present on the eSTS-E and eSTS-2UE
The PoE ETHERNET Port has the ability to receive power from the Network Cable. All power for the eSTS device, tablet charging, and attached USB accessories are provided by the PoE-ETHERNET Port. The eSTS Products with PoE resolve the problem of getting power to the tablet and peripherals.  The PoE specification allows the powered device to be up to 330 feet (100 meters) from the Network Switch or PoE Injector.

Deploying network cabling with PoE support can be significantly cheaper than installing dedicated power lines through a facility.

A nonPoE Network Switch can use a PoE Power Injector for each port to operate with an eSTS PoE device. A PoE Power Injector is a standard add-on available from many Network Switch vendors.

The eSTS PoE Power Supply provides 10.4 watts of power for the tablet, the eSTS, and attached USB accessories. The 10.4 Watt limit allows the device to be treated as a PoE Class 0 device by a PoE switch.

Yes you can, however, you need to disable the Ethernet option on the tablet.