d. When a cassette is inserted, the tape is partially loaded
automatically and stopped (this state is referred to as the "stop" mode).
The STOP indicator will be on at this time. When the STOP button is pressed
in any operation mode, the tape is partially unloaded and then stopped in
the "stop" mode.
e. The FAST FORWARD button can function in two ways, for fast forward
and forward search. The fast forward is designed to advance the tape at a
high rate of speed. The forward search is designed to advance the tape at a
high rate of speed, 10 times the normal speed, allowing the operator to see
the video as the tape is moving.
f. The REWIND button functions in two ways: for rewinding the tape and
reverse search of the video. When the REWIND button is pressed in the STOP
mode, the tape is rewound with a scrambled picture appearing on the monitor
screen. During rewind the tape is still wrapped around the head drum. When
the REWIND button is pressed while in the play or pause mode, the reverse
search mode is engaged with the tape running at about 10 times the normal
speed. At this time the video signal is recognizable. In both cases, the
REWIND indicator lights up. To release the rewind or search mode, press the
REWIND button again.
g. The PAUSE button has two functions.
When the PAUSE button is
pressed while in the PLAY mode, the video image will be a still picture, and
when in the RECORD mode, the record process is stopped until the PAUSE
button is pressed a second time. It is important to note that when in the
pause mode the tape is not moving but the head drum is. If the pause mode
is left on too long it will damage the tape as well as cause the heads to
become clogged. When the heads are clogged, the recorder cannot record or
play back a clear picture.
h. It is possible to record audio only and not erase the existing
video. The AUDIO DUB button will energize one of the audio record heads and
only record on one head or both as the operator sees fit. To do this the
operator must press the AUDIO DUB button and the PLAY button at the same
time; at this time the PLAY indicator and AUDIO indicator will light up.
i. When recording audio, the operator must first select either audio
channel one or channel two, or both, with the AUDIO METER select switch.
The operator must also turn the AUDIO-1 or AUDIO-2 AUDIO RECORD LEVEL
controls to a proper position, as indicated on the VU meters, to achieve the
proper audio levels. To hear the audio, the operator must turn the AUDIO
MONITOR LEVEL control. In addition to the AUDIO RECORD LEVEL controls there
is an AUDIO LIMITER ON/OFF switch, which provides an automatic gain control.
The only problem with automatic gain controls is that they are always
looking for an audio signal even if none is present.
When this happens,
noise is recorded on the audio.
The side of the recorder may house many input or output connectors in
order to allow audio and video signals to be monitored (fig 1-11).