Furuno FR-2135S manual ARP board adjustment, ARP Board 18P9002B

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ARP board adjustment

1.Turn the GAIN, A/C SEA and A/C RAIN controls fully counterclockwise, and then transmit on the 12 nm range.

2.Connect a digital multimeter between TP7(+) and TP6(-) on the ARP Board.

TP7	TP6	R104 R103

Figure 4-6 ARP Board (18P9002B)

3.Adjust R104 on the ARP Board so the multimeter reads between 0.09 and 0.14 VDC.

4.Set controls and switches as below.

GAIN: fully clockwise (max.)

Interference rejector: OFF

Range: 24 nm

Echo stretch: OFF

5.Press [RADAR MENU] [0] [0] [0] [0] open the INITIAL SETTING3 menu.

6.Set the VIDEO SIG field to DIGITAL and press [ENTER].

7.Adjust R103 on the ARP Board so noise just appears on the display.

Too little noise

Proper noise

Too much noise

Figure 4-7 How to adjust noise

8. Set VIDEO SIG to ANALOG and press [ENTER].

4-8

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Contents Back 00080839301 Safety Instructions Use only the specified power cable Table of Contents Equipment Lists Standard SupplyOptional Equipment Name Type Code No Qty RemarksSystem Configuration Scanner Unit Mounting considerationsInstallation precaution for S-band scanner unit ExampleHow to lift scanner unit Attachment of lifting fixtures and collarScanner unit assembling procedure Scanner unit assemblingInstallation of reinforcement ribs Fastening the scanner unit to the mounting platformMounting of scanner unit Mounting procedure Display UnitBefore mounting the display unit Tabletop mountingStay 10 Setting catch to hole in stay Console type mounting Separating the control headDisplay unit modification procedure Separate type control head kit Type OP03-151, No14 Detaching the control head Control head modification procedure Connection of display unit to control head16 How to attach KB fixing plate Attachment of hoodPower Supply Unit This page is intentionally left blank Wiring Fabricating the power cable DPYCY-3.5 JIS cableCable fed from back of display unit default method Leading in cables to the display unitCable fed from outside display unit Cables fed from bottom of display unit console mountConnections RemoveConnectors on the INT Board Connectors on the INT BoardHow to attach NH connector HOW to Attach NH Connector to Signal Cable10 Scanner unit, port side view Fabricating signal cable S03-74 11 Fabricating the signal cable S03-7413 Scanner unit, rear view 15 Fabrication of coaxial cable Changing AC Power Specification of Display Unit When the de-icer is installed18 Power supply unit PSU-004 Tuning Initialization Accessing Menus for Initialization and AdjustmentAdjusting Video Signal Level Restoring default settingsHeading Alignment Picture appears Deviated counterclockwiseAdjusting Sweep Timing Suppressing Main BangAntenna switch in tuning compartment Confirming Magnetron Heater VoltageInitial Setting Menus Scanner unit, stern side viewInitial SETTING1 menu Press Radar Menu 0 0 0Initial SETTING2 menu Initial SETTING3 menuInitial SETTING4 menu OWN Ship Information menuInstallation and connection of the Gyro Converter Board Gyro Converter GC-8INT Board DIP switch, jumper wire settings Connection of external power supplyDefault setting Setting method 1 by gyrocompass specifications Gyrocompass typeSetting method 2 by make and model of gyrocompass JP1 JP2 JP3 JP4 JP5Setting the heading readout on the radar display SW1Installation of the ARP board ARP Board ARP-26ARP board adjustment ARP Board 18P9002BFinal check ARP Board ARP-26RP Board RP-26 Table top/console type10 Display pedestal Separate type control head Necessary parts RP-26-Z-2E Code no13 Display pedestal, front view Performance Monitor PM-50 Necessary parts PM-50 and OP03-150 Code noProcedure Alarm KitNecessary parts OP03-156 Code no 16 Display unit, inside view Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page