omnicron-electronics vlr recorder 用户手册

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FEATURES 
   The Omnicron VLR recorder  
is a versatile solid-state unit  
featuring voice-activated recording. 
This feature permits you to record 
conversations without having to 
turn the recorder on  
and off manually. You can make 
recordings directly from the built-in 
microphone, or you can use an op-
tional interface coupler or cable to 
connect the recorder to telephone 
or radio circuits. 
   Other important features include 
an end-of-tape alarm, review and 
cue capability,
 
digital
 
tape counter, 
and monitor while recording. The 
VLR-4 and VLR-8 recorders in-
clude slow speed drive circuitry. 
The VLR-4 provides up to four 
hours of recording time on each 
side of a tape. The VLR-8 provides 
up to 8 hours per side. Automatic 
level control recording assures the 
best performance with reduced 
back-ground noise and distortion. 
A second recording channel for 
use with the Omnicron Talking 
Clock can be found on models 
VLR-1CT, VLR-4CT, and VLR-8CT. 
The clock provides documentation 
of the time and date each re-
cording takes place. 
   When you reach the end of tape 
in either play, record, fast-forward, 
or fast-rewind, the function keys 
will pop up turning the power off.  
If the End-Of-Tape Alarm switch  
is ON, the recorder will emit a con-
tinuous beep tone from its speaker 
whenever all function keys (Play, 
Review, and Cue)  
are up. 
 
 
PREPARATION FOR USE 
 
AC POWER 
   The recorder uses standard 120-
volt 60 Hz AC power. On the bot-
tom of your recorder you will find 
the AC power cord storage com-
partment.  Remove the cord and 
plug it into an AC outlet. 
 
BATTERY POWER
 
 
   The recorder uses six C-size 
cells. To install batteries, remove 
the lid of the battery compartment 
which is on the bottom of the re-
corder. Insert the six batteries  
to match the polarity of the “+”  
and “-” symbols shown inside of 
the battery compartment. After the 
batteries are installed and seated 
correctly, replace the battery com-
partment lid. 
   Incorrectly inserted batteries will 
not work and could cause damage 
to the batteries and the recorder. 
The recorder will trickle charge re-
chargeable batteries and a built-in 
relay will automatically switch over 
to battery power whenever AC 
power is lost. Non rechargeable 
batteries should be removed prior 
to operating the recorder on AC 
power. 
    Batteries are not required for 
operation on AC power. 
 
 
CASSETTE INSERTION 
   Open the cover of the cassette 
compartment by depressing the 
STOP-EJECT key. Insert the cas-
sette with the tape edge toward 
you and the full reel to the left. 
Now close the cover and the  
recorder is ready to operate. 
 
 
OPERATION 
 
GENERAL  
   You control all tape mechanism 
functions with the push buttons. 
The tape will stop, and power  
is off when all buttons are up.  
Depressing one of the PLAY, 
REVIEW (rewind), or CUE (fast-
forward) buttons turns on the 
power and places the tape re-
corder into the selected mode. 
You can stop the tape by pushing 
the STOP-EJECT key. Depress 
this key again to eject the cas-
sette. The recorder has an auto-
matic power-off circuit. When you 
reach the end of tape, the buttons 
will pop-up and power will turn off.  
A tape COUNTER helps you 
quickly locate recorded material for 
playback. Depress the button next 
to the counter to reset the numer-
als to “000”. 
 
RECORDING 
   When recording, the tape drive 
motor will run only when audio is 
present at one of the recorder's 
audio input sources. You can use 
either the built-in microphone, an 
external microphone, or an auxil-
iary audio source. You will auto-
matically turn off the built-in micro-
phone when you use either  
the external microphone jack 
(MIC), or the auxiliary input jack 
(AUX). Audio fed into the CLOCK 
jack on recorders with the CT  
option goes directly to the time 
track on the recording head and 
will not start the recorder's voice 
activation circuit. You must de-
press both the RECORD and the 
PLAY keys for the recorder to be 
in the RECORD mode. 
 
RECORD LEVEL 
ADJUSTMENT 
   On the bottom of the recorder 
you will find the record level con-
trol. You may increase the record 
level and make weak sounds 
louder by turning this control 
clockwise. If you set the control 
too high, your recordings could  
be distorted and the recorder will 
boost background noise exces-
sively. Line up the blade of a small 
screwdriver with the slot in the 
control. Adjust it up or down as re-
quired for the best sound quality. 
DO NOT FORCE THE CONTROL. 
To set the level correctly, watch 
the Record Level  
indicator light. When you are re-
cording, set the record level ad-
justment only as high as required 
to cause the red light to come on 
during voice peaks. If the light 
does not flash during conversa-
tions, the record level is too low.  
If it is on continuously, the record 
level is too high.