Measurement Computing WLS-TC - Manual (Page 22)

WLS-TC User's Guide Specifications
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Power
Table 11. Power specifications
Parameter Condition Specification
Connected to USB
Supply current 500 mA max
User +5V output voltage range
(terminal block pin 21 and 47) Connected to a self-powered hub. (Note 10) 4.75 V min to
5.25 V max
User +5V output current
(terminal block pin 21 and pin 47) Connected to a self-powered hub. (Note 10) 10 mA max
Isolation Measurement system to PC 500 VDC min
Wireless Communications operation
Supply current 500 mA max
AC Adapter power supply (used for remote wireless communications operation)
Standalone power supply USB power adapter
2.5 Watt USB adapter with
interchangeable plugs
(Includes plug for USA)
Output voltage 5V ±5%
Output wattage 2.5 W
Input voltage 100 – 240 VAC
50 – 60 Hz
Input current 0.2 A
Note 10: 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.
USB specifications
Table 12. USB specifications
Parameter Specification
USB device type USB 2.0 (full-speed)
Device compatibility USB 1.1, USB 2.0
Bus powered, 500 mA consumption max
USB cable type A-B cable, UL type AWM 2725 or equivalent. (min 24 AWG VBUS/GND, min 28
AWG D+/D–)
USB cable length 3 meters max
Environmental
Table 13. Environmental specifications
Parameter Specification
Operating temperature range 0 °C to 70 °C
Storage temperature range –40 °C to 85 °C
Humidity 0 to 90% non-condensing