Acomdata hd500fpmm 用户指南
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Cable length up to 4.5 m
Standard FireWire 400 cables use 6-pin connectors at both ends. Cables with
4-pin connectors are also available for connecting FireWire devices to laptop/
notebook computers and other devices that have 4-pin ports.
Standard FireWire 400 cables use 6-pin connectors at both ends. Cables with
4-pin connectors are also available for connecting FireWire devices to laptop/
notebook computers and other devices that have 4-pin ports.
About USB 2.0
USB (Universal Serial Bus) is an interface technology for the serial transmis-
sion of digital data. The original standard (USB 1.1) could transmit data at
speeds of up to 12 Mbps. USB 2.0 has a maximum throughput of 480 Mbps
(60 Megabytes/s) –– that’s up to 40 times faster than USB 1.1.
sion of digital data. The original standard (USB 1.1) could transmit data at
speeds of up to 12 Mbps. USB 2.0 has a maximum throughput of 480 Mbps
(60 Megabytes/s) –– that’s up to 40 times faster than USB 1.1.
Interface transfer rates up to 480 Mbps
480 Mbps is equivalent to 60 Megabytes per second. 480 Mbps is the maxi-
mum rate; data transfer rates will vary depending on a number of factors,
including available CPU resources.
480 Mbps is equivalent to 60 Megabytes per second. 480 Mbps is the maxi-
mum rate; data transfer rates will vary depending on a number of factors,
including available CPU resources.
Master-slave architecture
The computer (the master) dictates data flow to, from, and between attached
USB devices (the slaves).
The computer (the master) dictates data flow to, from, and between attached
USB devices (the slaves).
Cable length up to 5 m.
About FireWire & USB 2.0
FireWire 400
FireWire is a serial data input/output technology developed by Apple
Computer and Texas Instruments. The first FireWire standard was approved
by the Institute of Electrical and Electronic Engineers (IEEE) in 1995. The official
name for FireWire 400 is IEEE 1394a.
Computer and Texas Instruments. The first FireWire standard was approved
by the Institute of Electrical and Electronic Engineers (IEEE) in 1995. The official
name for FireWire 400 is IEEE 1394a.
Interface transfer rates up to 400 Mbps (50 MB/s)
FireWire 400 can transmit data at up to 400 Megabits per second, which is
equivalent to 50 Megabytes per second. FireWire supports both isochronous
and asynchronous data transfers. Isochronous mode provides guaranteed
transmission of data at defined intervals; it’s used when delayed or out-of-
order data frames are unacceptable, such as for capturing digital video. In
asynchronous mode, the intervals between transmissions can vary, and data
can be resent if missed. Asynchronous mode is typically used for routine data
transfers.
FireWire 400 can transmit data at up to 400 Megabits per second, which is
equivalent to 50 Megabytes per second. FireWire supports both isochronous
and asynchronous data transfers. Isochronous mode provides guaranteed
transmission of data at defined intervals; it’s used when delayed or out-of-
order data frames are unacceptable, such as for capturing digital video. In
asynchronous mode, the intervals between transmissions can vary, and data
can be resent if missed. Asynchronous mode is typically used for routine data
transfers.
Peer-to-peer architecture
FireWire devices are host-independent, meaning data transmissions between
FireWire devices on the same bus can take place without input from the host
computer. This independence from the host is one of the reasons FireWire
devices are, on average, faster than USB 2.0 devices in routine day-to-day use,
even though the rated maximum interface transfer for USB 2.0 is higher.
FireWire devices are host-independent, meaning data transmissions between
FireWire devices on the same bus can take place without input from the host
computer. This independence from the host is one of the reasons FireWire
devices are, on average, faster than USB 2.0 devices in routine day-to-day use,
even though the rated maximum interface transfer for USB 2.0 is higher.