Copyright © Shimmer 2017
Realtime Technologies Ltd Shimmer User Manual
All rights reserved Rev3p
22
The first of the USB Serial Port entries should be the outgoing COM Port associated with your dock;
this will be used for programming Shimmer devices and should be noted for future use.
3.2.2. Placing a Shimmer in the Dock
The Dock connects to the Shimmer via the External Connector. The External Connector is keyed and
does not require force to insert. Insert the Shimmer with the Bluetooth ID label facing away from the
USB cable.
Warning: Forcing the connector may cause permanent damage to your Shimmer.
When the Shimmer is placed in the dock, the green LED on the Power/Reset button on the dock will
light up green if the Shimmer is powered on. If it does not light up, one of the following may have
occurred:
Shimmer unit may be powered off -- check the slide power switch.
Shimmer unit may not be inserted properly.
Dock may not be powered via the USB cable.
3.2.3. Charging the Shimmer
The Dock, Base and Multi Charger are multi-functional devices – all of which are capable of charging
Shimmer units. This section outlines the use of the Dock for charging a Shimmer unit. For details on
using the Multi Charger please refer to the Shimmer Multi Charger User Guide.
In order to use the Dock as a charging device simply connect the USB cable of the Dock to a powered
USB socket and insert the Shimmer unit into the Dock.
Note: You should make sure your Dock is powered when a Shimmer is docked as the Shimmer
battery will discharge if it is left idle in a Dock that is not powered.
The state of the charge indicator LED is an indication of charge phase for the battery. There are three
phases to Shimmer battery charging, illustrated in Figure 3-8. The background colour on the graph in
Figure 3-8 indicates the colour of the charge indicator LED on the Dock during each phase.
Phase 1 is a Preconditioning Phase and is only required when the battery voltage has dropped below
a minimum threshold. The battery voltage should not drop below this minimum threshold with
normal everyday use. However, if a Shimmer is left idle for a long period of time, the battery may
self-discharge to a voltage below the minimum threshold. During the Preconditioning Phase, a low
current (12.5mA) is applied to bring the voltage to the Minimum Charge Voltage. The duration of
pre-conditioning will depend on the extent to which battery is discharged. For example, a Shimmer
that has been unused for several months and was discharged before storage may have a lengthy
pre-conditioning phase.
To Next Page
Loading...
