The invention provides an SMV
packet generator for a digital energy meter communication protocol test. The SMV
packet generator comprises a man-
machine interactive
system which comprises an industrial control
machine which is externally connected to a first DDR2, a DOM, an input keyboard, an LCD and a first
Ethernet module respectively, an embedded DSP
system which comprises a BF609 module which is externally connected to a second DDR2, a FLASH and a second
Ethernet module respectively, a time set module which comprises an antenna, a
GPS receiver, a
time stamp counter and a
comparator which are connected in order, and a power supply module. The output end of the
comparator is connected to the embedded DSP
system. The
time stamp counter is also externally connected to a pulse input module and a
clock oscillator at the same time. Both the first
Ethernet module and the second Ethernet module are provided with two paths of Ethernet interfaces. The man-
machine interactive system, the embedded DSP system and a digital energy meter are in mutual communication and connection through the Ethernet. The SMV
packet generator can be used in a digital energy meter communication protocol test, and the technical parameters of synchronization time
delay, dispersion and sampling rate can be flexibly controlled.