BEL 6110, Operator'S And Service Manual

5

BEL 6110

Digital Audio Lay-off Recorder

DESCRIPTION

The BEL 6110 is a device that will store audio and time code information in a digital

form. This information can then be replayed synchronised to an incoming time code. The
basic unit contains an 8 Mbyte circular memory which can record up to 42 seconds of
stereo audio. This memory can be increased, to a maximum of 32 Mbyte, providing
recording times of 84 secs and 168 secs respectively. The description below refers to the
8 Mbyte version but it also applies to all versions that differ only in recording times.

The BEL 6110 will initially fill its memory in a linear way and provide a warning on an

LED when the recording is within 5 Seconds of the end of this memory. If recording is
allowed to exceed the memory capacity the unit will enter a circular mode where only the
most recent 42 Seconds of audio is retained. In the follow mode, recording is only allowed
in the presence of a valid time code. When the same time code is subsequently applied to
the unit the audio is replayed in synchronism. The operation of the unit can be controlled
by two push switches. The status of the BEL 6110 is displayed on LED indicators and a
liquid crystal display (LCD). These controls and indicators are duplicated on a remote
control unit. Serial control (RS422) is programmable from the set-up menu.

OPERATION AND FRONT PANEL CONTROLS

There are six front panel controls. From left to right, these are:-

INPUT SENSITIVITY

This control permits the amplitude of the signal entering the unit to be adjusted. For

unity gain, set this control to the centre position. For other settings, with audio and running
time-code present, press the Record switch and adjust the control to provide the desired
level. The Peak Program indicators to the left of this control give a visual indication of
optimum settings. For normal operation, the yellow LED indicators should be on constantly,
with the green LED indicators flashing on peaks.

RECORD SWITCH

Providing there is time-code present, pressing ÒRecordÓ starts recording new audio

with its corresponding time-code. A second press of ÒRecordÓ returns the unit to Follow
mode as does pressing ÒPlayÓ, or interrupting the time-code for example, by stopping or
searching the edit VT. The red LED above the Record switch indicates ÒRecordÓ mode:this
indicator will flash 5 seconds before the memory is full. The amber LED indicators to the
left and right of the record switch indicate the position of the stored audio relative to the
incoming time-code. When the in-coming time-code is ÒbeforeÓ the stored audio, the left
LED will light, when it is locked both LEDs will light and when it is ÒafterÓ only the right LED
will be lit.