REGUL8OR – User’s Manual
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1.7
Synchronization of Multiple Units
The SYNC IN and SYNC OUT connectors on the rear panel of the device (both
SMA type) allows connecting and synchronizing multiple REGUL8OR units. This
feature permits users to keep two or more REGUL8OR units in-phase.
The first unit will generate an internal clock signal that will be fed to the SYNC
OUT connector and needs to be connected to the SYNC IN input of the following unit.
The SYNC IN and SYNC OUT signals are meant only for this dedicated
application and are ground-referred.
Figure 9:
schematic representation of a synchronization of multiple units
1.8
External SPI
An isolated SPI interface is present on the rear panel of the REGUL8OR on an 8-
pin connector.
This 4-wire SPI allows interfacing external devices to the unit in order to match
specific applications.
Beside the 4 wires of the SPI interface – i.e. MISO, MOSI, SCLK and CS\ - on
this connector are also present the pins for an isolated power supply rated a 2 W
maximum. These voltage levels are isolated from chassis ground (they can float up to
54 VDC) and they are rated at 5 VDC respect to the SPI ground pins.
As an example, it could be possible to custom-design a 32-channel temperature
readout external module with a small microcontroller and this external module could
directly be powered and read by connecting it to this SPI interface connector (all
firmware and software would need to be developed).
