Admesy MSE Series, Руководство по эксплуатации

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2.3 Trigger in/out
The MSE has two trigger connections. One trigger output and one trigger
input (SMA connectors). The MSE can be triggered when it is operating in
USB or RS232 mode. When triggering is enabled, the trigger output line
will be set to a high level once the measurement has finished and the
measurement result is available. It will stay at a high level until the next
command is carried out, but has a minimum high level of 50
μs. A trigger
will carry out the last send command and send the result to the host via an
interrupt endpoint on the USB bus. The colorimeter main application
allows external triggering in the data-logging tab. Supplied code examples
show how to use this feature in an application. The trigger output line is
used to indicate that the measurement is ready. Trigger signals should
comply to the following timing.
Fig 3 Trigger-in timing.
Trigger pulses arriving faster than the MSE can measure will be ignored,
but it may slowdown overall performance. Trigger pulses should not arrive
faster than the measurement takes to complete. The best way is to use the
trigger output to make sure measurement was finished. The trigger out
port provides a continuous high signal when the device is in use. Its signal
turns low when the device is not executing any commands.
2.4 Power connections
The MSE should be connected to USB with enough supply or using a 9V
DC power supply to the RS232 connector. When using RS232 the
colorimeter needs to be powered via an external adapter. This can be
done through the mini-DIN connector as illustrated in the RS232
connections. The unit shall be powered by a 9V DC voltage or via a
standard USB PC-port, reinforced separated from Mains, with a limited
energy of < 150VA and < 8A.
Connection Min.
Voltage Typ.
voltage Max.
voltage Max
current
USB powered 4.75 V 5.00 V 5.25 V 225mA
DC powered 8.50 V 9.00 V 15.00 V 225mA
Table 2 Power supply levels.
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