BriarTek Orca DF-101 Manuale utente

DF-101 User Manual

and Installation Guide

ORCA DF-101

IS AN

IDENTIFICATION

AND RECOVERY

SYSTEM FOR

NAVY FLEETS

BriarTek, Inc. Technical Support:

(703) 548-7892

Email: support@briartek.com

Web: www.briartek.com

Table of Contents

1.0 DF-101 Introduction ........................................................................ 5

2.0 DF-101 Parts Overview .................................................................... 5

3.0 DF-101 Functions............................................................................ 6

3.1 Power On/Off................................................................................... 6

3.2 Speaker .......................................................................................... 6

3.3 Clear .............................................................................................. 6

3.4 Squelch .......................................................................................... 6

3.5 Dim ............................................................................................... 7

3.6 Signal Strength................................................................................ 7

3.7 Warning.......................................................................................... 7

3.8 Default Settings ............................................................................... 7

4.0 Installation Notes............................................................................. 7

4.1 Display........................................................................................... 8

4.2 Antenna Array ............................................................................... 10

5.0 Small Boat Procedures ................................................................... 13

5.1 Set Up.......................................................................................... 13

5.2 Operation...................................................................................... 13

6.0 General Guidance for Bridge Watchstanders

and Small Boat Personnel ............................................................... 14

7.0 Direction Finder Maintenance.......................................................... 14

7.1 Inspection..................................................................................... 14

7.2 Testing ......................................................................................... 14

7.3 Antenna Element Replacement........................................................ 15

7.4 In-line Fuse Replacement................................................................ 15

7.5 Troubleshooting ............................................................................. 16

8.0 Parts List ...................................................................................... 18

9.0 DF-101 Speciﬁcations.................................................................... 20

10.0 Warranty....................................................................................... 22

1.0 DF-101 Introduction

The DF-101 direction ﬁnder is an interferometer signal processor and provides the

relative bearing to a 121.5 MHz transmission. Each DF-101 consists of a display

unit and an antenna array. This system is mounted on the navigation bridge and

small boat to assist in the location and recovery of an MOB.

2.0 DF-101 Parts Overview

A– Power On/Off (Red) Button I– Warning LED

B– Power On/Off LED J– Signal Strength Indicator

C– Squelch Increase Button K– Numeric Bearing Indicator

D– Squelch Decrease Button L– Speaker (4 Ports)

E– Display Dimmer Button M– Circular Display Bearing Indicator

(36 LEDs)

F– Speaker On/Off Button N– Data Connector

G– Speaker On/Off LED O– Power Connector

H– Clear (Depress Squelch Decrease

[D] & Dim [E] Simultaneously)

P– DF101 Antenna Array

Figure 1. DF-101 Display (Front View)

Figure 2. DF-101 Display (Back View)

3.0 DF-101 Functions

3.1 Power On/Off

The Power On/Off button (A) provides power to the system and restores default

settings. When button is held down for at least one second, the display will perform

a system check to determine that the DF-101 is functioning properly. While it is

performing this check, all LEDs will illuminate. After the system check is complete,

the only remaining illuminated LEDs will be the Power On LED (B), the Speaker

On/Off LED and the Numeric Bearing Indicator (K) will display “---“. Note: the

illuminated Speaker On/Off LED indicates the speaker is off. Press the Speaker

On/Off button to turn on the speaker. Check to ensure the Warning LED (I) is not

illuminated; if the Warning LED is illuminated, service is required. To turn the

direction ﬁnder off, hold down Power button (A) for at least one second; all LEDs will

extinguish.

3.2 Speaker

The speaker (L) provides the audible indication of the received distress signal. The

Speaker On/Off button (F) toggles the speaker on and off. When the Speaker On/Off

LED (G) is illuminated, the speaker is off.

3.3 Clear

Clear (H) is used to clear the DF-101 internal data used to calculate bearing; it

resets to an un-averaged bearing value. Clear the display by depressing the Squelch

decrease button (D) and Dim button (E) simultaneously. When the data is cleared,

the bearing LEDs will illuminate in the same pattern as when the unit is ﬁrst

powered on.

3.4 Squelch

Squelch is used to ﬁlter undesired signals that may be present at or near 121.5 MHz.

These signals are typically found in high trafﬁc areas such as shipping channels, airport

ﬂight paths, and populated areas. It is also used to reduce interference noise from

own ship RF emissions. Increasing squelch will cause a decrease in range of the DF.

Therefore it is recommended that the squelch be decreased when operating away from

high trafﬁc areas in order to maximize system range.

Changing the squelch level: Press and hold the “Squelch +” button (C) or the

“Squelch –“ button (D) to enter squelch mode and increase/decrease the squelch

level. While in squelch mode, a squelch value will be displayed on the numeric

bearing indicator (K) as well as on the LED bearing indicators (M). Values for

squelch are 0-360. Release squelch increase/decrease button when desired squelch

level is achieved. The DF will return to bearing display mode ﬁve seconds after

release of button.

3.5 Dim

The display dimmer button (E) enables the user to dim the display LEDs. The

display has 3 levels of illumination. Push the button to decrease the illumination.

3.6 Signal Strength

The signal strength indicator LEDs (J) indicate the received signal strength on a

graduated scale from 0 to 6 (0 indicating weak/no signal and 6 indicating strong signal).

3.7 Warning

The warning LED (I) alerts the user to a failure in the system. If this LED is

illuminated, ﬁrst turn off power (A) and check to ensure DB-9 data and power cable

connections (N & O) are fully secured. Turn on power (A). If warning LED is still

illuminated, see section 4.0, Maintenance and Troubleshooting procedures.

3.8 Default Settings

Default settings for the DF-101 are:

• Dim – High (brightest) value

• Squelch – Last saved value

• Speaker – OFF

NOTE: The system returns to the default settings when the DF-101 is turned on.

4.0 Installation and Repair Notes

The installation notes provided herein are intended to serve as a guide only. They do

not serve as material required for the certiﬁcation of technicians for the installation,

repair or alteration of the ORCA® MOBI system.

NOTE: When replacing a DF-100 (see ﬁgure 4) with a DF-101, ensure that the

display and antenna are replaced. The DF-101 display does not function with the

DF-100 antenna; the DF-101 antenna does not function with the DF-100 display.

Figure 4. DF-101 display and antenna

4.1 Display

a. General. Display should be mounted in accordance with platform-speciﬁc ship

installation drawings (SIDs) for shipboard installation or BOATALT GEN47B

drawings for RHIB/LCPL installation. For ship installations, the display is typically

mounted near the conning ofﬁcer’s station. On a ship’s small boat, the display is

mounted on the console.

b. Mounting the DF Display. Display bracket should be installed IAW SIDs or

BOATALT drawings. If installing on a RHIB or LCPL, see section 4.1.c. for

attaching the DF display hood.

(1) Mate display to display bracket and attach using M4 fasteners, lock washers

and threadlock provided with the display.

(2) Attach power and data cables to the display. If the display will be installed

on a RHIB or LCPL, waterproof DB9 connectors with extended length gaskets

must be installed on the data and power cables. If replacing a DF-100 with a

DF-101 direction ﬁnder, replace the standard length gasket with the extended

length gasket provided. See ﬁgure 6. Please refer to electrical speciﬁcations in

Section 9.0, DF-101 Speciﬁcations, for connector requirements, cable pin-out

information and power & grounding requirements.

WARNING: Ensure power cable leads are connected correctly. Failure to do so

could result in DF display failure and will void warranty

Figure 5. DF-101 Display Mounting Hole Dimensions

c. Install DF Display Hood. If installing on a RHIB or LCPL, secure rubberized DF

display hood to the display bracket. You will need access to the inside of the

console to perform this.

(1) Remove forward-most bracket securing screw, washers (2) and locknut. See

ﬁgure 7. Set aside screw, washers and locknut in a safe location.

(2) Align the hood securing strap grommet with the hole in the display bracket.

Figure 6. DB9 Gaskets

Figure 7. DF Display Bracket

(3) From the exterior of the console, insert screw with washers (one outside and

one inside console). Secure with locknut on the interior of the console.

(4) Cover DF display with hood. See ﬁgure 9. While the DF display is not in use,

display should remain covered.

Figure 8. DF Display Hood – Figure 9. DF Display Hood –

display uncovered display covered

4.2 Antenna Array

a. General. The antenna array should be mounted IAW platform speciﬁc SIDs or

BOALTALT drawings. In general, the antenna array should be installed at the

highest point possible such as the ship’s mast and away from any obstructions

that would interfere with the DF’s line of sight to the MOB transmitter. In practical

application it is recommended that the antenna array is mounted a minimum of

3’ away from any adjacent objects (i.e., GPS antenna, VHF marine radio antenna,

stanchion, etc…) and located such that adjacent objects are non-planar.

b. Mounting the antenna array.

(1) Place antenna array onto antenna mast. Dimensional requirements for mast

fabrication are located in Section 9.0, DF-101 Speciﬁcations.

(2) Orient antenna array. Position the antenna such that the two opposing

antenna elements facing relative north point parallel to the bow of the vessel

(see ﬁgure 10). Relative north of the antenna array can be indentiﬁed by

locating the raised “N” text on top of the antenna housing and adjacent to the

top, forward looking antenna element. Additionally, there is a small pressure

relief valve on the bottom side of the antenna housing adjacent to the bottom,

forward looking antenna element.

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