Warnings and precautions, Power and cables – ChemoMetec SP-100 User Manual
Page 13
Warnings and precautions
xii
Warnings and precautions
Wherever the
symbol appears on the NucleoCounter SP-100 instrument, it indicates
that the manual must be consulted for precautions and warnings.
Power and Cables
Power and Cables
Power and Cables
Power and Cables
Use the shielded USB cable supplied with the NucleoCounter SP-100 to ensure that you
maintain the appropriate EMI classification for the intended environment.
Figure
Figure
Figure
Figure 1
11
1. USB Port & Printer Port
The USB interface connector of the NucleoCounter SP-100 must only be connected to
SELV circuits. External computing devices connected to the USB interface connector of
the NucleoCounter SP-100 has to comply with the standards, UL 1950 and IEC/EN 60950.
Table
Table
Table
Table 1
11
1.
Description of the NucleoCounter SP-100 USB interface connector
Pin no.
Pin no.
Pin no.
Pin no.
Name
Name
Name
Name
Maximum
Maximum
Maximum
Maximum
Voltage level
Voltage level
Voltage level
Voltage level
1
11
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
1
In normal operation mode (refers to Pin no 4)
USB Port
RS-232 Printer Port