Measurement-computing USB-QUAD08 Bedienungsanleitung PDF herunterladen (Seite 31)

USB-QUAD08 User's Guide Specifications

Power

Table 6. Power specifications

Parameter

Condition

Specification

USB

(+5V) (Note 1)

 Connected to self-powered hub

 Connected to externally-powered root port hub

4.5 V to 5.25 V

480 mA max; 225 mA typ

USER

(+5V) current

4.5 V to 5.25 V; 20 mA max

Encoder supply

External supply of 1.5 A @ 5 VDC fused up to 42.4 V

(50 V

) @ 2 A

Protection diodes (30BQ060, 0.5V

max

drop) protecting against reverse polarity.

Encoder supply fuse

0452002. - Littelfuse 2A NANO2® Slo-Blo® Subminiature Surface Mount Fuse

Note 1: "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. "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. If your laptop PC is constrained to the

100 mA max, use a self-powered hub.

Environmental

Table 7. Environmental specifications

Parameter

Specification

Operating temperature range

0 °C to 60 °C

Storage temperature range

–40 °C to 85 °C

Humidity

0% to 90% non-condensing

Mechanical

Table 8. Mechanical specifications

Parameter

Specification

Dimensions (L × W × H)

245 × 146 × 50 mm (9.6 × 5.7 × 2.0 in.)

USB specifications

Table 9. USB specifications

Parameter

Specification

Device type

USB 2.0 high-speed mode (480 Mbps) if available (recommended), otherwise, USB 1.1

full-speed mode (12 Mbps)

Device compatibility

USB 2.0 (recommended) or USB 1.1

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 (9.84 feet)

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