Version 1.0
Introduction
The USB Power Delivery Fast Role Swap switches provide a tool to simulate a loss of external power.
They are currently available to use for correlation, validation and debugging of USB Fast Role Swap
architecture.
Safety
The FRS switch was developed for use with USB‐IF approved test equipment to specifically perform the
tests define in Chapter 8 of the USB Power Delivery Compliance Test Specification. Any use of the FRS
switch outside of this scope is strongly discouraged.
When connecting or disconnecting the DC side spliced power line to the FRS Switch via the banana plug
connectors users
*MUST*
disconnect the AC/DC power adapter from AC power and ensure all residual
power in the AC/DC adapter is discharged. Not doing so can cause serious injury or death through
electrocution.
The FRS switch should not be left on or connected for any extended duration. It is strongly
recommended that the FRS Switch be connected only for the purposes of running the FRS Compliance
tests, then disconnected.
At no point should a user disassemble the FRS Switch.
Equipment
Below is a table of equipment needed to us the FRS switch:
Additional Equipment:
Used For:
Provided By:
AC/DC Power Adapter with DC
side power line spliced.
Terminate splice on each end
with banana plug connectors
Connect both ends of the
spliced power line to banana
receptacles on FRS switch
following orientation labels
User must provide their own
AC/DC Power Adapter
Control cable terminated in
2.1mm Barrel Jack Plug
Connect to the control
receptacle on the FRS switch to
Approved USB‐IF Compliance
Test equipment
Barrel Jack Plug provided by
USB‐IF with purchase of FRS
switch. User must create own
control cable
Approved USB‐IF USB PD
Compliance Test Equipment
Running FRS tests as defined in
Chapter 8 of the USB Power
Delivery Compliance Test
Specification
List of approve USB PD test
equipment can be found at
https://www.usb.org/usbc
