Panasonic VDR-M55EB Operating Instructions Manual page 160

Howling:
This phenomenon occurs as follows: when the DVD Video Camera is connected to a device, such as TV,
the audio input to the microphone of DVD Video Camera is amplified and output from the speakers of TV,
and the signal is again input to the microphone. This is repeated to form an endless loop of audio signal,
and the signal is amplified up to the audio output amplitude limit of the device. Howling can be prevented
by changing the positional relationship between the DVD Video Camera and TV, or by turning down the
volume on TV.
Suspending PC:
This function stores the status of a PC before it is turned off. It will restart the work from the status
immediately before the PC was turned off, when the PC is turned on next time.
Video selector:
This device can input multiple audio and video signals, and select the desired audio and video signals
among those input, to output them.
Finalise:
This process makes a DVD-R disc recorded on this DVD Video Camera playable on a DVD player, etc. that
conforms to 8 cm DVD-R: No further recording can be made on a finalised DVD-R disc.
Laser pickup block:
This block emits laser beam to a disc, and then collects the laser beam
reflected from the disc to convert it to an electric signal. The block consists
of a laser, lens, receiving element, etc.
Laser pickup block
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