VI Basic Operations

USB

 

 

 

 

5 Using the DS-L1 when Connected to a PC by a USB Cable

 

 

USB interface boards and hubs

The DS-L1 supports USB 2.0.

If the DS-L1 and the USB interface board are connected in one of the following ways, data is transferred at a rate of 12 Mbps compliant with the USB 1.1 standard.

USB 1.1 interface board

 

DS-L1

 

 

 

 

 

 

 

 

 

 

 

 

USB 1.1 interface board

 

USB 1.1 hub

 

DS-L1

 

 

 

 

 

 

 

 

 

 

USB 2.0 interface board

 

USB 1.1 hub

 

DS-L1

 

 

 

 

 

 

 

If the DS-L1 and the USB interface board are connected in one of the following ways, data is transferred at a rate of 480 Mbps compliant with the USB 2.0 standard.

USB 2.0 interface board

 

DS-L1

 

 

 

 

 

 

 

 

 

 

 

 

USB 2.0 interface board

 

USB 2.0 hub

 

DS-L1

 

 

 

 

 

Make sure that the USB 1.1 interface board and USB 1.1 hub used in the system are compliant with the USB 1.1 standard, and that the USB 2.0 interface board and USB 2.0 hub used in the system are compliant with the USB 2.0 standard.

To avoid unexpected problems, we recommend that the interface board and the DS-L1 be connected in only one hub stage, and not in cascaded hub stages.

NOTE: When multiple units of DS-L1 are connected to a Windows 2000 machine equipped with a USB 1.1 interface board, or a USB 1.1 hub, the DS-L1 units do not operate normally.

If connecting multiple units of DS-L1 is desired, use a USB 2.0 interface board and a USB 2.0 hub, or use Windows XP for the OS.

USB cables

The DS-L1 does not come with a USB cable. Be sure to purchase an appropriate cable that suits the USB standard of the PC or hub that will be used.

•USB 1.1 or USB 2.0-compliant cable when the PC or hub is USB 1.1

•USB 2.0-compliant cable when the PC or hub is USB 2.0

Device operation cannot be guaranteed if nonconforming cables are used.

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