3.4Checking Magnetron Heater Voltage

Note: This confirmation/adjustment should only be performed by a qualified service technician.

Magnetron heater voltage is formed on the PTU (1833C)/MD (1823C/1933C/1943C/1953C) Board of the antenna unit, and preadjusted at the factory. Therefore no adjustment is required. However, check magnetron heater voltage for confirmation as follows:

1.Open the antenna unit.

2.Turn on the power. Do not transmit the radar.

3.Connect a multimeter, set to 10VDC range, appropriate position on the MD (1823C), PTU (1833C) or RTB (1933C/1943C1953C) Board in the antenna unit. Refer to the table in below.

4.Confirm that the multimeter indication is appropriately.

 

MODEL1823C

MODEL1833C

MODEL1933C/1943C/1953C

 

 

 

 

Check point

TP804#6 (+) and #4 (-)

TP802#4 (+) and #6 (-) on

J825#4 and #6 (GND) on

on MD Board

PTU Board

RTB Board

 

 

 

 

 

Multimeter indication

7.9 to 8.1 V

7.4 to 7.6 V

7.4 to 7.6 V

 

 

 

 

Adjustment point

VR801 on MD Board

R106 on PTU Board

VR801 on MD Board

 

 

 

 

3.5Navigation Data Source

The NAV SOURCE SETTINGS menu mainly selects the source of nav data. For navigator other than the FURUNO GP-310B/320B, speed averaging and local time offset (to use local time instead of UTC time) are also available from this menu.

1.Press the [MENU] key followed by SYSTEM CONFIGURATION, NAV OPTION and NAV SOURCE SETTINGS soft keys to show the NAV SETUP menu.

POSITION SOURCE

ALL

NAV

SETUP

SPEED AVERAGING*

0060second (s)

 

LOCAL TIME OFFSET*

+00:00

 

TEMP CALIBRATION

+00 F

EDIT

DEPTH CALIBRATION

+00ft

 

 

 

RETURN

* For GPS receiver other than GP-310B/320B.

Nav setup menu

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Furuno 1943C, 1933C, 1833C, 1823C, GD-1900C, 1953C Checking Magnetron Heater Voltage, Navigation Data Source, Nav setup menu

1823C, 1833C, GD-1900C, 1933C, 1953C specifications

Furuno is a well-respected name in marine electronics, renowned for producing high-quality navigation and fish-finding equipment. Among their product line, the Furuno 1943C, 1953C, 1933C, GD-1900C, and 1833C stand out as reliable radar systems, providing exceptional performance and advanced features for both commercial and recreational vessels.

The Furuno 1943C is a powerful 12 kW radar system, boasting a 10.4-inch monochrome display with a user-friendly interface. It is equipped with digital signal processing (DSP) technology that enhances target detection and resolution. The 1943C offers superior target tracking capabilities, even in challenging weather conditions. Its patented Auto Gain Control ensures that small targets are not lost in clutter, making it a favorite among serious navigators.

Moving on to the Furuno 1953C, this model has an impressive 12 kW output and features a high-resolution 15-inch color display. It integrates advanced features such as Automatic Radar Plotting Aid (ARPA) for tracking multiple targets simultaneously, increasing situational awareness and safety on the water. Additionally, the 1953C offers a range of presentation modes, allowing users to customize the display to their specific needs.

The Furuno 1933C is a compact yet efficient radar solution with a 6 kW output and a 10.4-inch monochrome display. This system is highly regarded for its reliable performance and ease of use. Its user-friendly interface makes navigation simple, while features such as Target Analyzer and Echo Trails aid in identifying potential hazards, ensuring safe passage through busy waterways.

The Furuno GD-1900C combines chartplotting and radar in a single unit. With a 10.4-inch color display, it provides clear visuals of radar data as well as navigation charts. The GD-1900C supports various chart formats, including C-MAP and Navionics, allowing boaters to access detailed navigational information. This system is especially useful for those who need both radar and chartplotting capabilities in a space-saving design.

Lastly, the Furuno 1833C is a versatile radar system with a 4 kW output and a 7-inch color display, catering to smaller vessels. It features Furuno's advanced technology, such as a built-in GPS receiver and the ability to overlay radar data on electronic charts. This model is ideal for recreational boaters seeking an affordable yet feature-rich radar solution.

In summary, Furuno’s range of radar systems, including the 1943C, 1953C, 1933C, GD-1900C, and 1833C, demonstrates the brand’s commitment to quality and innovation in marine technology. Each unit incorporates advanced features tailored to meet the diverse needs of boaters, ensuring safe and efficient navigation on the water.