G********d
发帖数: 10250 | | t*****r
发帖数: 2542 | 2 bso，包子
【在 G********d 的大作中提到】
: 想把电脑连到音箱 地方有点大
| p**p
发帖数: 3386 | 3 太远了，5米差不多
【在 G********d 的大作中提到】
: 想把电脑连到音箱 地方有点大
| C*********y
发帖数: 2738 | | C****c
发帖数: 9157 | 5 我记得usb2.0的标准对usb线有长度限制
【在 G********d 的大作中提到】
: 想把电脑连到音箱 地方有点大
| h*********u
发帖数: 10868 | 6 没问题， 我的无线网卡辐射大， 就是用这个接到客厅了
【在 G********d 的大作中提到】
: 想把电脑连到音箱 地方有点大
| G********d
发帖数: 10250 | 7 找到关键了
Maximum Cable Length
The maximum length of a standard USB cable (for USB 2.0 or earlier) is 5
metres (16.4 ft).[34] The primary reason for this limit is the maximum
allowed round-trip delay of about 1,500 ns. If USB host commands are
unanswered by the USB device within the allowed time, the host considers the
command lost. When adding USB device response time, delays from the maximum
number of hubs added to the delays from connecting cables, the maximum
acceptable delay per cable amounts to 26 ns.[34] The USB 2.0 specification
requires cable delay to be less than 5.2 ns per meter (192,000 km/s, which
is close to the maximum achievable transmission speed for standard copper
cable).[35] This allows for a five meter cable. The USB 3.0 standard does
not directly specify a maximum cable length, requiring only that all cables
meet an electrical specification. For copper wire cabling, some calculations
have suggested a maximum length of perhaps 3 m.
估计usb输出到声卡可以成功 | k****t
发帖数: 12697 | |
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