Reach PoE Tester Manual V1.4
02/15/2018
Page 12
5.3.
Signature and loads
The IEEE 802.3af controller used is the TI TPS2375.
The variable power load can be connected directly to the full wave bridge for emulation
of non-IEEE loads. There are full signature resistor options for IEEE - too low, nominal,
too high, and none. A legacy capacitive load can be applied; this can also be used to
simulate an AC load for AC disconnect testing. The classification load is variable and can
be margined. The "power-good" status of the IEEE controller goes active once the load
capacitor is charged and can be monitored.
Full wave Bridge
and standard
overvoltage
protection
Variable load
Max 800mA
"load" command (manual)
"auto" command (IEEE)
"set" command
IEEE 802.3af
controller
Variable load
(Class)
Max 50mA
Signature options
"detect" commands
"class" commands
Power Status
"status" command
Legacy capacitive
signature 10uF
"cap" command
Load capacitor 47uF
