ChemoMetec 900-0300, Руководство пользователя, Страница: 13 / 60

1
Warnings and precautions
Wherever the symbol appears on the NucleoCounter instrument, it indicates that
the manual must be consulted for precautions and warnings.
Power and cables
Use the shielded USB cable supplied with the NucleoCounter to ensure that you
maintain the appropriate EMI classification for the intended environment.
The USB interface connector of the NucleoCounter must only be connected to
SELV circuits. External computing devices connected to the USB interface
connector of the NucleoCounter has to comply with the st andards, UL 1950 and
IEC/EN 60950.
Table 1 . Description of the NucleoCounter USB interface connector
Use the shielded printer cable supplied with the NucleoCounter to ensure that you
maintain the appropriate EMI classification for the intended environment.
The printer interface connector of the NucleoCounter must only be connected to
the printer supplied by ChemoMetec A/S. External computing devices connected to
the printer interface connector of the NucleoCounter has to comply with the
standards, UL 1950 and IEC/EN 60950.
1
In normal operation mode (refers to Pin no 4)
Pin no. Name
Maximum
Voltage level
1
1 +5V +5 VDC
2 D- +3.5 VDC
3 D+ +3.5 VDC
4 DGND 0 VDC
Metal
enclosure
Shield
(connected
to DGND)
0 VDC