46 AP 7161 Access Point
2.5 AP 7161 VMM Power Options
The AP 7161 Vehicle Mounted Modem (VMM) is a software enabled profile within the WiNG5 architecture that
uses the same hardware as AP 7161 infrastructure models (see
AP 7161 Hardware on page 8). As such, a
mounted AP 7161 operating as a
VMM within a vehicle or mobile asset requires a power source delivered via
Power over Ethernet (PoE). The same requirements and guidelines for Access Point power are in force as noted in
this installation manual. Refer to
Specifications on page 59 for operating voltage and operating current.
An AP 7161 operating as a VMM has the capability of being installed into a variety of vehicular and mobile
environments. As such, a professional certified installation partner should be consulted on appropriate power
sources and installation into a vehicle or mobile asset. Motorola Solutions does not provide a vehicular power
source nor takes responsibility for any power solution design operated outside of the allowed specifications for
power of an AP7161 running as a VMM.
The following table shows a number of potential power sources and corresponding industry options to power an
AP 7161 VMM:
CAUTION Exceeding these requirements can invalidate warranty.
Potential Vehicular/Mobile Power Sources Required Source
12V battery DC-DC convertor or DC PoE injector
24V battery DC-DC convertor or DC PoE injector
12V power plug DC PoE injector with power plug adapter
AC invertor in vehicle AC PoE injector
PoE switch in train or vehicle Direct connection via CAT5E cable
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