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LAVA Computer MFG Inc. eSynC Product 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
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The Power Adapter input on the eSynC 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 cable length between the power supply and the eSynC product must be as short as possible.
The cable experiences power loss proportional to the cable length and wire thickness. The
voltage present at the eSynC receptacle will be lower than the supply output due to cable power
loss. There is power loss in the cable which connects the eSynC to the device. If the voltage at
the device is too low, the device will not charge.
The USB specification defines the minimum voltage of 4.75 volts for USB accessories operating
at a full unit load. When connecting some accessories to the device via an eSynC product, 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
4.75. A power budget must be carefully evaluated for the system if reliable operation is to be
ensured.
The models with the Power Adapter input include the eSynC-1U, eSynC-1U-OEM, eSynC-BM-
OEM, eSynC-3U, eSynC-E, and eSynC-2UE.
“Aux. Power Adapter” input
The “Aux. Power Adapter” input is a Micro USB-B receptacle on eSynC PoE products and a
USB-C receptacle on certain products with voltage converters.
This input is
used for system testing when PoE power
is not
present. The eSynC product will be
fully functional, including the 10/100 Ethernet, when this power input is used.
This receptacle
is only
for providing power to the eSynC product.
This power input has the same specifications as the “Power Adapter” Input.
The PoE models include the eSynC-PE and eSynC-P2UE products. The adapters with built-in
voltage converters that offer an “Aux. Power Adapter” include the eSynC-vc1U and the eSynC-
vc3U.
Warning:
When supplying power using the “Aux. 5 Volt” input, you must not use
PoE-supplied power or the “9-36 VDC In” receptacle.