Can I connect and disconnect 1394 devices without turning the power off?
Yes. 1394 is “hot pluggable.” That means when you plug in a new device, the 1394 “bus” automatically recognizes it. Similarly, when a device is disconnected, 1394 automatically reconfigures itself. In fact, the standard 1394 cable provides up to 1.5 amps of DC power to keep remote devices “aware,” even when they are turned off.
