Metrohm 899 Coulometer - Manual (Page 36)

3.7 Connecting a keyboard, printer and other USB devices
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
26 ￭￭￭￭￭￭￭￭
899 Coulometer
USB device Connection options
PC keyboard with USB cable (for
the comfortable input of letters
and numbers) ￭ With USB hub
Barcode reader with USB cable ￭ With USB hub
Keypad with numerical keypad
with USB cable ￭ With USB hub
If you wish to connect several different instruments that do not
have their own power supply, then it is possible you will need to use a
USB hub that does have its own power supply (self powered). The USB
(OTG) connector of the 899 Coulometer is not designed for supplying
power to several devices with elevated electricity requirements.
Also observe the instructions in chapter 10.3, page 93.
Examples:
USB MINI (OTG)-USB
USB stick
6.2151.100
Figure 19 Connecting the USB flash drive
USB MINI (OTG)-USB
USB stick
Keypad
6.2147.000
6.2151.100
Printer
Figure 20 Connecting the 6.2147.000 USB keyboard with USB flash
drive and printer