Technical Reference Manual-XPM3m Revision Date: August 2014
Test procedure for AC Convenience Outlets
Disconnect power to the system. Using an Ohmmeter on its lowest scale, measure the resistance between the
ground terminal on the socket and the ground block on the main electrical back panel. This value should
typically be less than 1 ohm.
With power applied to the system, use a Voltmeter set on the proper scale, measure the voltage between the
live and neutral terminals on the socket, this value should be nominally 120 VAC.
D.C. POWER SUPPLY
The DC power regulation is internal to the A1 Board. 120 VAC is converted to 24 VDC. Step-down switching
regulators change the 24 VDC to separate 15 VDC and 5 VDC supplies. These DC voltages are self regulated and
have no adjustment.
Voltage Checks
When troubleshooting an electrical or electronic problem, always verify the basic AC and DC voltages supplied for
operation.
To Next Page
Loading...
