Measurement Computing WLS-IFC - Manual (Page 12)

WLS-IFC User's Guide Specifications
12
USB +5V voltage
Table 4. USB +5V voltage specifications
Parameter Specification
USB +5V (VBUS) input
voltage range 4.75 V min to 5.25 V max
Power
Table 5. Power specifications
Parameter Specification
Supply current 300 mA max (Note 3)
Note 3: 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 6. USB specifications
Parameter Specification
USB device type USB 2.0 (full-speed)
Device compatibility USB 1.1, USB 2.0
Bus powered, 300 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 m (9.84 ft) max
Environmental
Table 7. Environmental specifications
Parameter Specification
Operating temperature range 0 °C to 70 °C
Storage temperature range –40 to 85 °C
Humidity 0 to 90% non-condensing
Mechanical
Table 8. Mechanical specifications
Parameter Specification
Dimensions (L × W × H) 79 x 75 × 26.5 mm (3.11 × 2.95 × 1.04 in.)