Nagra III - Precautions and Safety; Battery Handling and Storage; Physical Protection and Environment; Description of Controls and Mechanism

NAGRA III TAPE RECORDER
INSTR UCTIONS FOR USE
1. PRECAUTIONS TO BE TAKEN
When out of use, turn the tape transport control to its mid position. In the
"ON" position, when not running, there is danger of producing a flat on
the capstan roller . The working surfaces of the fast rewind clutch may
also suffer.
II
When batteries are exhausted, a corrosive liquid may escape and the
containers may corrode. Never leave discharged batteries in the Nagra.
If the machine will not be used for sometime (a few months), remove
the batteries, even if they are not discharged, as a precaution.
Take care that the batteries are inserted into the machine with correct
polarity. Place them in the battery compartment as indicated by the small
diagram on the bottom of the compartment. When an external power supply
is used, always check the polarity very carefully. If it is incorrect, the
motor will run backwards. A special protective circuit is used to prevent
damage to important parts of the Nagra, but even so it is possible that some
electrolytic co ndensers could be damaged.
The Nagra III is very robust, but it is better to take no chance. Protect it
from sand, sea, being dropped, or from mechanical shock. Do not subject
it to rapid changes of temperature, or to the curiosity of unqualified
personnel, and above all, from vibration. For instance, do not carry it
unprotected in the baggage compartment of a car.
II. DESCRIPTION OF CONTROLS AND EXTERNAL MECHANISM
1. Speed and Equalization Selector.
This switch may be operated by a coin in the slot. It Simultaneously
changes speed and equalization, both for recording and play- back. The
following combinations are available:
38,1 cm/sec. = 15"/sec. (CCIR or Ampex)
This speed is normally used in broadcasting studios. The use of it, insured the
best quality; the azimuth adjustmen~ is not very critical, while the response