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1.7 Digital Indicator, Distance Indicator (option)
The digital indicator and distance indicator use the same housing as the display unit.
Refer to the section 1.2 Display Unit for mounting instructions.
1.8
Junction Box (option)
1.8.1
Mounting considerations
The junction box forms a joint between the distribution box and the transceiver unit, and it is
designed to be mounted on a bulkhead. Install it referring to the guidelines below.
•
Keep the junction box away from noise-emitting electrical machinery, for example, electric
generator, radio transmitter, TV, etc.
•
Although the box is splashproof, do not install it in places of high humidity.
•
Avoid installing the box where temperature varies greatly, since moisture may penetrate the
box.
•
The box is generally installed above the draft line of the ship and the transducer cable is run
inside steel conduit. This permits replacement of the transducer without dry docking. Even if
the junction box is installed below the draft line, the conduit is necessary to minimize picking
up of noise. If use of conduit is not possible, install the box as near to the transducer as
possible.
Procedure
Open the box cover, and fix the unit to a bulkhead, referring to the outline drawing at the back of
this manual.
1.9
Dimmer (option)
The optional dimmer, which is designed to comply with the Japan Industrial Standards (JIS
F8852), is used for externally controlling the illumination of the display of the digital/analog
displays. When a dimmer is supplied locally, refer to the interconnection diagram at the back of
this manual for the values of the resistors since they are different depending on the display
(digital or analog) and power supply (115 V or 230 VAC).
To use this equipment for display unit/digital indicator/distance indicator, set the dimmer setting
on the unit menu. For detail, see "3.2 Setting of Unit Menu.
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