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USB-5201 User's Guide
Real time clock
Battery backup
Accuracy
USB +5V voltage
Parameter
USB +5V (VBUS) input voltage range
Power
Parameter
Connected to USB
Supply current
Supply current
(Note 8)
User +5V output voltage range
(terminal block pin 21 and 47)
User +5V output current
(terminal block pin 21 and pin 47)
Isolation
AC Adapter Power Supply (used for data logging operation)
Output voltage
Output wattage
Input voltage
Input current
Note 8:
This is the total current requirement for the device which includes up to 10 mA for the status
LED.
Note 9:
Self-Powered Hub refers to a USB hub with an external power supply. Self-powered hubs allow
a 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's USB Host Controller. The USB port(s) on your PC are root
port hubs. All externally powered root port hubs (desktop PC's) 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.
Table 10. Real time clock specifications
CR-2032 lithium coin cell, replaceable
±1 minute per month
Table 11. USB +5V voltage specifications
Conditions
Table 12. Power specifications
Conditions
USB enumeration
Continuous mode
Connected to a self-powered hub. (Note 9)
Connected to a self-powered hub. (Note 9)
Measurement system to PC
26
Specifications
Specification
4.75 V min. to 5.25 V max.
Specification
<100 mA
500 mA max.
4.75 V min. to
5.25 V max.
10 mA max.
500 VDC min.
5V ±5%
2.5 W
100 – 240 VAC
50 – 60 Hz
0.2 A
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