Tascam DA-78HR - Manual (Page 9)

1 - Introduction to the DA-78HR
TASCAM DA-78HR
9
water. Do not use abrasive cleaners or solvents such
as alcohol or thinner.
Avoid subjecting the DA-78HR to jolts, sudden
shocks, etc.
NOTE
— I MP OR TANT
If you have to return the unit for service or repair, use
the original packing materials if possible. If the unit is
to be transported to a recording location, etc., use a
suitable transport case with sufficient shock
protection.
TASCAM does not accept responsibility for damage
resulting from neglect or accident.
1.4.4 Installing the DA-78HR
The DA-78HR may be installed in a standard 19”
rack, occupying 3U of space. Since the DA-78HR is
quite heavy (around between 7 and 8 kg – about
16 lb.), your rack should be strong and stable to take
the weight of the DA-78HR.
The DA-78HR should be mounted with the front
panel vertical.
1.4.5 Electrical considerations
Make sure that your local power supply matches the
voltage requirements marked on the rear panel of the
DA-78HR.
If you are in any doubt concerning the local power
supply, consult an electrician.
Avoid extreme voltage fluctuations. If necessary, use
an input voltage regulator to smooth the power sup-
plied to the DA-78HR.
Do not open the unit to clean inside, or to perform
any internal adjustments. You should not attempt any
cleaning or other maintenance procedures which are
not described in this manual.
You may need to clean the heads occasionally. The
procedure for doing this, and for checking tape error
rates, etc., is given in 11.1, “Head and transport
cleaning”.
1.4.6 Three-core power cord
In order to maintain the best possible audio quality,
the DA-78HR is supplied with a 3-core (grounded)
power cord. DA-78HR should be used with a
grounded power cord, connected to a suitable electri-
cal ground, at all times. If it is not, there is a possibil-
ity that the audio quality will suffer.
1.4.7 Powering the DA-78HR off and on
When powering the DA-78HR off and on, always
wait for five seconds or more between powering the
unit off and turning it on again. If the power is
switched too quickly, the precision power supply
may not provide the power of the proper quality
required for recording.
If power is inadvertently switched off an on quickly,
and the power supply does not respond properly,
switch the unit off again, wait for five or more sec-
onds, and switch it on again.
1.4.8 Condensation
If you use the DA-78HR in a warm place after mov-
ing it from a cold place (for instance, recording on
location), or if there has been a sudden change in
temperature, condensation may occur within the tape
mechanism, with a risk of possible damage to the
unit.
If condensation does occur, you will not be able to
operate the DA-78HR controls, and you will see the
following message on the display
E DEW ( E DEW ).
If you see the above message, leave the DA-78HR
switched on for one or two hours, then switch it off
and on again before starting recording.
If you are going to use the DA-78HR in a location
where you think condensation is likely to occur,
move the DA-78HR into the warmer location about
one or two hours before recording is due to start, and
leave it switched on. Turn the DA-78HR off and then
on again before starting recording.
1.5 Recommended tapes
The DA-78HR is designed for use with Hi8 video
cassettes. You cannot use any other kind of tape with
the DA-78HR.
Always use new tapes, or tapes in the best possible
condition, in order to achieve the best possible results
when recording. Tapes which have been over-used
will not give such good results as new tapes.