Interfaces, indicators and controls, Ac adapter input, Battery, “loop” and comm bus power inputs – ThingMagic Mercury xPRESS Platform v1.7 User Manual
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A D I V I S I O N O F T R I M B L E
Hardware Reference Guide
109
Interfaces, Indicators and Controls
AC Adapter Input
The AC adapter (“wall-wart”) input is designed to accept a 5 VDC source. When used with
the M6e module, the tolerance on this voltage is +/- 5%. When used with the Micro
module, there is a bit more flexibility - the range can be 4.3 to 5.25 VDC.
Because of the M6e module’s input voltage tolerance, an AC Adapter input is required for
using the xPRESS platform with an M6e module - the platform cannot be run off a battery
alone or a battery supplemented by USB power.
In the worst power consumption use-case (driving an M6e module that is transmitting
while charging a completely discharged battery), over 2.5 W of power will be needed. The
AC adapter supplied with the xPRESS platform can supply 4W of power.
See the section of this chapter on
this interface.
Battery, “Loop” and Comm Bus Power Inputs
There are two battery inputs provided, one for 2-pin batteries and one for 3-pin batteries.
The 3-pin batteries have an additional “NTC” connection that allows the Battery Charging