Advantech TouchMix XI - Page 34

TouchMix
®
XI Computer User Manual Date: 6/10/16 Doc#: 2005SA1800
Page 34
(2) USB2.0 Port (Dedicated for scale)
Requires end user supplied cable for installation. (Reference Installation Control Drawings)
IMPORTANT‐ALLconnectionstotheseportsMUSTcomplywiththeEntityParameters
providedbelow
Note: USB Power (pin 1) has an output impedance of 9Ohms. USB device power is
limited to steady state current of 500mA @ 5V±0.25V.
Voc/Uo=
(V)
Isc / Io=
(A)
Po=
(W)
Co=
(uF)
Lo=
(mH)
Pin1 Power 11.6 1.302 3.776 140 0.03
Pin2Data–(bidirectiona l) 10 0.673 1.683 20 0.25
Pin3Data+(bidirectiona l) 10 0.673 1.683 20 0.25
Pin4GND ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐
EntityParametersforUSB2.0(DedicatedScaleport)
Pin 
Number:
Sign alName(In/Out):
Note‐Cablecapacitanceandinductancemustbeincludedintheoverallconnectioncalculations.Worstcase
capacitanceandinductancesgenerallyacceptedare:
Capacitance‐197pF/m(60pF/ft.)andInductance‐0.66uH/m(0.20uH/ft.)
Vmax(orUi)>Voc(orUo)
Imax(orIi)>Isc(orIo)
Pi>Po
Ci+Ccable<Ca(or
Co)
Li+Lcable<La(orLo)