Meilhaus Electronic ME-5001, Руководство пользователя

Страница: 30 / 50

the ME-iDC configuration tool in order to specify the configuration
for the corresponding subdevice (see also Table 4 on page 27).
The programming of the frequency measurement and the pulse
generator is always done in the single operation mode. The subtype
of the subdevices is always ME_SUBTYPE_SINGLE.
Please read the ME-iDS manual and the ME-iDS help file (*.chm)
carefully prior to programming. You can open both of these docu-
ments through the "ME-iDS Control Center" or through the Win-
dows Start menu.
Two variables are introduced to describe the rectangular signal,
and apply equally to input and output. One value indicates the pe-
riod T, while the other value provides the duration of the pulse of
the first phase of the period t
1P
. For frequency measurement, the
measurement starts with the first rising edge, and finishes with
the next rising edge. The falling edge that lies between them de-
fines the end of the first phase. In pulse generator mode, output
normally starts with a high level, changing to the low level when the
first phase has elapsed.