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USB-5203 User's Guide
USB +5V voltage
Parameter
USB +5 V (VBUS) input voltage
range
Power
Parameter
Connected to USB
Supply current
Supply current (Note 3)
+5 V output voltage range
(pins 21 and 47)
+5 V output current
(pins 21 and 47)
Isolation
AC Adapter Power Supply (used for data logging operation)
Output voltage
Output wattage
Input voltage
Input current
This is the total current requirement for the device which includes up to 10 mA for the status LED.
Note 3:
Self-powered hub refers to a USB hub with an external power supply. Self-powered hubs allow a
Note 4:
connected USB device to draw up to 500 mA. This device may not be used with bus-powered hubs due
to the power supply requirements.
Root Port Hubs reside in the PC USB host controller. The USB port(s) on your PC are root port hubs.
All externally powered root port hubs (desktop PC) provide up to 500 mA of current for a USB device.
Battery-powered root port hubs provide 100 mA or 500 mA, depending upon the manufacturer. A
laptop PC that is not connected to an external power adapter is an example of a battery-powered root
port hub.
USB specifications
Parameter
USB device type
Device compatibility
USB cable type
USB cable length
Table 16. USB +5 V voltage specifications
Specification
4.75 V min to 5.25 V max
Table 17. Power specifications
Conditions
USB enumeration
Continuous mode
Connected to a self-powered hub. (Note 4)
Connected to a self-powered hub. (Note 4)
Measurement system to PC
Table 18. USB specifications
Specification
USB 2.0 (full-speed)
USB 1.1, USB 2.0
Self-powered, 500 mA consumption max
A-B cable, UL type AWM 2725 or equivalent. (min 24 AWG VBUS/GND,
min 28 AWG D+/D–)
3 m (9.84 ft) max
29
Specifications
Specification
<100 mA
500 mA max
4.75 V min to
5.25 V max
10 mA max
500 VDC min
5 V ±5%
2.5W
100 VAC to 240 VAC
50 Hz to 60 Hz
0.2 A
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