Lectrosonics AV 62, Руководство по эксплуатации, Страница: 8 / 20

MONO OUTPUT - Supplies a balanced mono output signal. If an unbalanced signal is desired, simply use the (+) output
and the ground terminal. The (-) terminal should be left unconnected.
MIC INPUTS 1-2 - Accepts balanced or unbalanced signal. Fully balanced differential input, RF filtered.
MIC INPUT GAIN SWITCHES 1-2 - Allow mic input gain to be set. Each pair of dip switches set the gain of the input
preamplifier. 0dB gain, for line level sources, is set when both switches are in the up position. 30dB gain, typically for high
output (electret) microphones, is set when the leftmost switch of the pair is in the up position and rightmost switch is in the
down position. 50dB gain, used for low output (dynamic) microphones, is set when both switches are in the down position.
LINE INPUTS 1-6 - Accepts unbalanced stereo consumer level (-10dBu nominal) signals from CD players, VCRs, multime­
dia sound cards, etc.
INPUT LEVEL CONTROLS - Sets the input gain of the associated program input. Controls both left and right channels
simultaneously.
OPERATING INSTRUCTIONS
Setup of the AV62 consists of choosing rear panel microphone dip switch options, setting rear panel line levels, and
adjusting front panel tone and volume controls. Using the Remote Level Control capability of the AV62 is addressed in the
next section.
1) There are several options which may be set on the AV62 by pressing one of the Program Input Select buttons while
turning on the power to the AV62. These button and their associated functions are listed below:
Program Input Select 1: Sets the AV62 into the single program input mode . This means that the AV62, when in Local
mode (i.e. the Local Mode LED is lighted), may have only one program input active at a time. The single input mode
forces the AV62 to operate as a one-of-six signal switcher as far as program inputs are concerned. For example, if
program input 1 was active and the Program Input Select 3 button is pushed, program input 1 will be muted and
program input 3 will become active.
Program Input Select 2: Sets the AV62 into the multiple program input mode . This means that the AV62, when in
Local mode (i.e. the Local Mode LED is lighted), may have any combination of its six inputs active. The multiple input
mode forces the AV62 to operate as a six channel mixer as far as program inputs are concerned. For example, if
program input 1 was active and the Program Input Select 3 button is pushed, both program input 1 and program input 3
will be active.
Program Input Select 3: Toggles the AV62 between Local Mode and Memory Recall Mode. In Local Mode the Local
Mode LED is lighted, and the Program Input Select buttons or the rear panel remote Line/Memory Select contact
closure inputs determine which program inputs are active (see single and multiple input mode descriptions above). In
the Memory Recall Mode the Local Mode LED is not lighted, and the Program Input Select buttons or the rear panel
remote Line/Memory Select contact closure inputs determine which stored memory (1-6) will be the active memory.
Program Input Select 6: Resets the AV62 non-volatile memory to the factory default settings. The only exception to
this is that the LecNet address is not affected by the reset.
2) Set up the preamplifier gain using the dip switch positions shown on the rear panel. The 0dB position is used for line
level sources like tape players or VCRs. The 30dB position works well for higher output microphones like electrets. The
50dB position is best for dynamic microphones, or electret types where the distance from the talker to the microphone
is more than 3 feet or so. Start with the front panel Mic In level at 12 o’clock (straight up). Adjust the front panel Mono
Mic Out level control until the desired sound reinforcement level is reached. Mono Bass and Treble controls may now
be adjusted for best sound.
3) Set the rear panel Program level controls to the 12 o’clock (straight up) position. Further adjustment of these controls
may be necessary if there is wide variation in level between program sources. Select one of the active program sources
using the front panel Program Input Select pushbuttons. Adjust the front panel Stereo Program Out level control (and
Balance control, if needed) until the desired program level is reached. Mono Bass and Treble controls may now be
adjusted for best sound.
4) The Left and Right Program outputs and the Mono output have a limiter function which can be applied to limit the
maximum output level of these signals. If limiting is desired, adjust the rear panelProgram or Mono limiter control
(starting from fully clockwise) counterclockwise until the appropriate limit LED flashes. This indicates that the output is
in limiting.
The system is now ready for use.
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