_REVISED Gyrocompass install SOW 21P45A84 DEPENDABLE.pdf

REVISED Statement of Work: Gyrocompass, Upgrade

REV RFQ NR 70Z080-21-Q-P45A8400

1. SCOPE

1.1 Intent. This Statement of Work describes the requirements for the Contractor to replace the current SAFRAN BlueNaute Gyro compass with the MK27F Northrop Grumman Fiber Optic Gyro Compass.

1.2 Government-furnished property.

MTI ITEM DESCRIPTION NSN/PN QTY ESTIMATED

COST

($/UNIT)

N Gyrocompass NSN: 6605-01-568-4117

PN: 4800880-1

1 ea. $190,806.00

N Connector Kit NSN: 5935-01-568-4115

PN: 4301242-2

1 ea. $3,066.00

N Installation Kit NSN: 5895-01-568-4116

PN: 4301250

1 ea. $338.00

N **Circuit card assembly NSN: 015954410

PN: 4301251-2

1 ea. $21,771.00

N Data Acquisition System (Synchro transmitter)

NSN: 5865-01-593-8926

PN: BBG-7266E

1ea. $11,961.00

**New or refurbished equipment that the Government may provide for installation in place of existing equipment.

2. REFERENCES

COAST GUARD DRAWINGS

Coast Guard Drawing 618 WMEC 401-007, Rev A, SAFRAN BlueNaute Gyrocompass System

General Arrangement Coast Guard Drawing 618 WMEC 426-003, Rev F, MK27F Gyro Compass Installation Design

Plan Coast Guard Drawing 618 WMEC 426-004, Rev D, MK27F Gyro Compass Installation Wiring

Data (Coed) Coast Guard Drawing 618 WMEC 426-005, Rev A, SAFRAN BlueNaute Gyrocompass Block and Elementary Wiring Diagram Coast Guard Drawing 618 WMEC 441-007, Rev E, INMARSAT B System Block Wiring

Diagram

Coast Guard Drawing 618 WMEC 451-007, Rev E, AN/SPS-78(V) 2 Radar Installation Block Wiring Diagram

Coast Guard Drawing 627 WMEC 184-003, Rev G, I.C. & Gyro Rm Elec. Equip. Foundation Details

Coast Guard Drawing 627 WMEC 401-001, Rev AK, General Arrangement of I.C. and Gyro Room

Coast Guard Drawing 627 WMEC 423-001, Rev AA, Major Maintenance Availability Radio Navigation System Block Wiring Diagram

Coast Guard Drawing 627 WMEC 441-001, Rev BB, Rad Comms Wrg Diag – Intl Rack Wrg Diag & Rack Det

COAST GUARD PUBLICATIONS

Coast Guard Commandant Instruction (COMDTINST) M10360.3 (series), Coatings and Color

Manual Coast Guard Technical Publication (TP) 4036, SWBS 426, Section A, Jun 2019, Gyrocompass

System – Bluenaute – Operating/Maintenance and Spare Parts Manuals Coast Guard Technical Publication (TP) 3719, SWBS 426, Section A, Amendment 1 Apr 2011, Gyro Attitude and Heading Reference System (AHRS) – Model MK27-F Surface Forces Logistics Center Standard Specification 0000 (SFLC Std Spec 0000), 2020, General Requirements Surface Forces Logistics Center Standard Specification 0740 (SFLC Std Spec 0740), 2020, Welding and Allied Processes Surface Forces Logistics Center Standard Specification 3041 (SFLC Std Spec 3041), 2020, Shipboard Electric Cable Test Surface Forces Logistics Center Standard Specification 3042 (SFLC Std Spec 3042), 2020, Shipboard Electrical Cable removal, Relocation, Splice, Repair and Installation Surface Forces Logistics Center Standard Specification 6310 (SFLC Std Spec 6310), 2020, Requirements for Preservation of Ship Structures Surface Forces Logistics Center Standard Specification 0850 (SFLC Std Spec 0850), 2020, General Requirements for Drawing Preparation

OTHER REFERENCES

None

3. REQUIREMENTS

3.1 General.

3.1.1 Order of Precedence. In the event of a conflict between the text of this specification and the references cited herein, this specification must take precedence. However, nothing in this document supersedes applicable laws and regulations unless a specification exemption has been obtained. The Contractor must notify the Contracting Officer (KO) in writing for a resolution of any ambiguity or conflict found in these specifications

3.1.2 Tech Rep. The Contractor must provide the services of a qualified Tech Rep, who is familiar with the Sperry Marine gyrocompass equipment/system, to accomplish the following tasks – on site:

Advise on manufacturer's proprietary information pertinent to the system.

Assist with proper installation methods.

Ensure compliance with manufacturer's procedures and standards during installation, inspection, modification, and calibration of the equipment/system.

3.1.2.1 Ensure that the Tech Rep has a resume of demonstrated experience with the system/equipment stated above.

3.1.2.2 Submit a copy of the Tech Rep’s résumé and a list of references to the to the COR at the Arrival Conference.

3.2 “Red-lined” drawing deliverables. The Contractor must “red-line” the Coast Guard Drawings listed in Section 2 herein to clearly reflect any deviations accomplished during the completion of this work item. Submit a CFR.

3.2.1 Prior to the commencement of work, the Contractor must submit redline drawing to the Coast Guard for approval.

3.2.2 Within 10 calendar days after receiving Coast Guard comments or completion of the availability, whichever occurs first, incorporate all comments and deliver one set of the final red-lined drawings to the

COR.

3.3 Interferences. The Contractor must handle all interferences in accordance with SFLC Std Spec 0000, paragraph 3.3.5 (Interferences).

3.4 Welding and brazing requirements. The Contractor must perform all welding and allied processes, and NDE in accordance with SFLC Std Spec 0740.

3.5 NMEA sentence structure. The Contractor must identify the existing NMEA sentence structure for the seven NMEA repeaters, Autopilot, SIRVSS, Seawatch Data interface unit, AN/SPS-78 Radar prior to disassembling the SAFRAN gyrocompass system. Submit a CFR.

3.6 Equipment removal. The Contractor must remove the exiting SAFRAN Bluenaute Gyrocompass, SAFRAN NMEA distribution panel, SAFRAN power distribution panel (PDP), SAFRAN gyrocompass alarm panel (GAP), SAFRAN alarm control and display (ACDP), SAFRAN buzzer box (2), UPS, SAFRAN NMEA to synchro convertor(s), SAFRAN NMEA to synchro convertor junction box and SAFRAN remote alarm control (RAC) as directed by the Coast Guard Inspector and using the references listed in Section 2 as guidance.

3.6.1 Mandatory Turn-in Item (MTI) removal. The Contractor must turn over the following MTI(s) to the Coast Guard Property Administrator or the Coast Guard Inspector:

SAFRAN NMEA to synchro convertor(s)

3.6.2 Equipment disposition, disposal. Dispose of all remaining SAFRAN gyrocompass system equipment in accordance with all applicable Federal, state, and local regulations.

3.6.3 Foundation modification. The Contractor must modify foundations using TP 3719 (paragraph 8-3) and SFLC Std Spec 0740 as guidance.

3.7 New equipment installation. The Contractor must install all new equipment as directed by Coast Guard Inspector and using drawing listed in Section 2 (References).

3.7.1 Compass installation. Mount Master Compass on newly installed adapter plate using the hardware from the supplied installation kit (NG part #4301250). Conduct physical installation of the master compass in accordance with TP 3719, Chapter 8, sections 8-1 through 8-11.

3.7.2 Electrical work. The Contractor must accomplish all electrical work in accordance with SFLC Std Spec 3042, and test cables in accordance with SFLC Std Spec 3041. Utilize the existing wire ways for new cable runs as much as possible.

3.7.3 Power supply. The contractor must install the new 28VDC power supply and 28VDC Automatic Power Selection Panel as directed by Coast Guard Inspector and using Coast Guard Drawing 618 WMEC 426-003 as guidance.

3.7.4 NMEA. The contractor must install a digital repeater panel/ NMEA distribution panel to distribute the MK27F gyrocompass NMEA data to seven NMEA repeaters, Auto pilot, SIRVSS, Seawatch Data interface unit, AN/SPS-78 Radar and Data Acquisition System (Synchro transmitter) as directed by the Coast Guard Inspector and using Coast Guard drawing 618 WMEC 426-003 as guidance.

3.7.5 Synchro. The contractor must install Data Acquisition System (Synchro transmitter) and connect to MILSTACOM as directed by the Coast Guard Inspector and using drawing 618 WMEC 426-003 as guidance

3.7.6 Bus failure alarm. The Contractor must install a new Bus failure alarm in the pilot house as directed by Coast Guard Inspector and using drawing 618 WMEC 426-003 as guidance.

3.7.7 Equipment compatibility. It is expected that existing repeaters and other connected and support equipment are compatible with the new MK27-F Gyrocompass. Submit a CFR for any incompatibilities found upon installation of new gyrocompass

3.8 Touch-up preservation. The Contractor must prepare and coat all new and disturbed surfaces to match existing adjacent surfaces in accordance with SFLC Std Spec 6310, (Touch-ups and minor coating repairs.)

NOTE

Coast Guard personnel will operate all shipboard machinery and equipment.

3.9 Operational test, post repairs. After completion of work, the Contractor must thoroughly test, in the presence of the Coast Guard Inspector and demonstrate all components of the Gyrocompass system including the seven NMEA repeaters, Autopilot, SIRVSS, Seawatch Data interface unit, AN/SPS-78 Radar and Data Acquisition System (Synchro transmitter) is in satisfactory operating condition. Submit a

CFR.

3.9.1 Refer to paragraph 4.1 (Test memo) for the installation testing procedure.

3.9.2 The Tech Rep must witness a minimum of 4-hour sea-trial test of the gyrocompass system. The sea-trial may occur at a later date than the installation.

4. NOTES

4.1 Test memo. The following Test Memorandum will be used during the operational test after installation

TEST MEMORANDUM

1) TITLE: Northrop Grumman MK27F Attitude and Heading Reference System (AHRS) (Fiber Optic Gyro Compass)

2) PURPOSE: To demonstrate the proper installation and operation of the Northrop Grumman MK27F AHRS as the vessels Gyro Compass System.

3) REFERENCES:

a) Coast Guard drawing 618 WMEC 426-004, Rev D, MK27F Gyro Compass Installation

Wiring Data (Coed)

b) Coast Guard Drawing 618 WMEC 426-005, Rev A, SAFRAN BlueNaute Gyrocompass

Block and Elementary Wiring Diagram

c) Coast Guard Technical Publication (TP) 3719, SWBS 426, Section A, Amendment 1 Apr

2011, Gryocompass (Northrop Grumman Document #JA17-8182 MK-27F GYRO ATTITUDE AND HEADING REFERENCE SYSTEM (AHRS) Operation & Service Manual)

4) ATTACHMENTS:

a) MK27-F GYRO INSTALLATION CONFIGURATION DATA RECORD (BLANK)

b) MK27-F GYRO INSTALLATION CONFIGURATION DATA RECORD (WITH

RECOMMENDED CONFIGURATION DATA)

5) REQUIRED TEST EQUIPMENT:

The following is a list of the required test equipment needed for the equipment test:

a) Digital Multimeter (DMM) with valid calibration certification.

b) Bit Test Plug p/n 4600382 (supplied with gyro compass equipment).

6) PREPARATION:

A) Using Ref’s a and b, check all interconnecting cabling for proper installation. This will include proper marking of the cabling (cable tags), proper strapping of the cables within existing cable runs when applicable, and proper termination IAW the wiring data furnished in ref b.

Conducted by _____________

B) Verify with Multimeter the proper AC voltage (120 VAC 60 Hz Nominal) will be found at the 28VDC power supply on input terminals 14 and 15.

Conducted by _____________

C) Verify with Multimeter the proper AC voltage (120 VAC 60 Hz Nominal) will be found at the Data Interface System power input terminal.

Conducted by _____________

D) Verify with Multimeter the proper AC voltage (120 VAC 60 Hz Nominal) will be found at the Steering Alarm Panel on terminals TB1-13 and TB1-12

Conducted by _____________

E) Verify with Multimeter the proper DC voltage (24VDC Nominal) will be found at the 28VDC Automatic Power Selection Panel on terminals IN-1 (+), TB1-6 (-) and IN-2 (+), TB1-7 (-). This voltage is supplied by the vessel’s emergency battery supply.

Conducted by _____________

F) Verify with Multimeter the proper DC voltage (24VDC Nominal) will be found at the Master Compass on terminals J1-A (+), J1-B (-). This voltage is supplied by the 28VDC Automatic Power Selection Panel.

Conducted by _____________

G) Verify with Multimeter the proper DC voltage (24VDC Nominal) will be found at the Data Interface System on terminals.

Conducted by _____________

H) Verify with Multimeter the proper DC voltage (24VDC Nominal) will be found at the Bus Failure Alarm on terminals TB1-1 (+), TB1-2 (-).

Conducted by _____________

I) Verify with Multimeter the proper DC voltage (24VDC Nominal) will be found at the Steering Alarm Panel on terminals TB1-4 (+), TB1-5 (-).

Conducted by _____________

J) Verify with Multimeter the proper DC voltage (24VDC Nominal) will be found at the Steering Alarm Panel on terminals TB1-4 (+), TB1-5 (-).

Conducted by _____________

K) The installing activity must read and understand the content of Chapter 1 (General Information) and Chapter 2, (Operation) of the MK-27F Gyro Compass operations and service manual (reference (c)).

L) Proceed to Chapter 8 of reference (c). Insure that the physical installation of the gyro compass was carried out IAW paragraphs 8-1 through 8-11 of Chapter 8.

M) The installing activity must read and become familiar with the procedure set forth in section 8-12 of reference “c”. This particular installation will be utilizing serial input #1 for GPS Data and serial input #2 for Speed Log Data. One stream of NMEA data (HDG) will be sent to the Transmission Unit. The outputs will not be used at this time. They will be available for future use. This particular installation will be using an external signal reference for the 60 HZ Synchro signal.

N) Attached documents contain a copy of a blank “MK27-F GYRO INSTALLATION CONFIGURATION DATA RECORD” and a copy of the same document with recommended/suggested settings. The installing activity must fill out all pertinent information as required by the installation, make a copy and leave onboard vessel with the ship’s representative.

These documents will contain required data needed when utilizing the SETUP procedure of the MK27-F Gyro.

7) ENERGIZING AND SETUP MODE

A) Following the procedure outlined on page 8-11 of reference (c), perform the following:

1) Locate and refer to the “CONFIGURATION DATA RECORD” specific to the installation being performed.

2) Loosen the gyro top cover screws. Open top cover for access to the SETUP button, (see paragraph 2-2.5 and Figure 2-2 of reference “c”). It will be used to enter the Off-Line Mode and to save the configuration data.

3) Verify that signals are available from the ship’s speed log and GPS receiver, if fitted.

4) On the gyro, set Power Switch (S1) to ON (up position).

5) Inside the gyro, locate the SETUP button and press the SETUP button once during the 45-second startup period.

6) Observe that the Off-Line Mode menu is displayed.

>EDIT SETUP

RECALL SETUP

SAVE SETUP

SIMULATE / VIEW I/O

7) Use the UP <key> (↑) or DOWN <key> (↓) to highlight the EDIT SETUP menu.

>EDIT SETUP

RECALL SETUP

SAVE SETUP

SIMULATE / VIEW I/O

8) Use the RIGHT <key> (→) to select the EDIT SETUP menu. Observe that the following menu is displayed.

>SERIAL

SYNCHRO

SYSTEM ALIGNMNET

OTHER

9) Refer to the menus in Table 8-10 on page 8-20 of reference (c) to view the Operator selections/options available. Enter the configuration data for the MK27-F Gyro installation by using the Keypad keys to move between menus and sub-menus and to make selections and assign values for each selection and use the RIGHT <key> (→) to enter the data for the selection highlighted. If necessary, return to a menu or sub-menu to change or correct data.

Record the configuration selections on the blank MK27-F GYRO INSTALLATION CONFIGURATION DATA RECORD sheet. (in attachment 1)

B) SERIAL MENU

1) SERIAL menu is used to configure the four (4) ports at connector J4. Each port can be configured independently for baud rate, output messages, (maximum of 3 per port) and message rate for each message. Incompatible message rates and baud rates are not allowed.

Higher baud rates may be necessary to support higher message rates or multiple sentences in the message. Setting the output baud rate also sets the input baud rate for each port (i.e. the input’s baud rate defaults to the output port’s baud rate setting). Refer to table 3-2 in Reference (c) for a list of options available. In this particular installation, set Serial Port #1 to 4800 baud with output MSG to include HDT, ROT and XDR. These outputs will not be used initially, but are intended for future expansion when needed.

LEVEL 1 MENU

>SERIAL

SYNCHRO

SYSTEM ALIGNMENT

OTHER

LEVEL 2 MENU

>#1BAUD 4800 MSG

#2 BAUD 4800 MSG

#3 BAUD --- ---

#4 BAUD --- ---

LEVEL 3 MENU

PORT #1 ID RATE

>MSG 1 MESSAGEID1 10

MSG2 MESSAGE ID2 100

MSG3 NONE

BAUD Rate: 4800, 9600, 19200, 38400, 57600 or 115200 baud.

MESSAGEID cannot be accessed unless baud rate is chosen. MESSAGEID options are ATT, HDG, PRP, ROT or XDR.

MESSAGE Rate: 1, 2,10,25,50 or 100 (Hz).

PORT # changes according to port chosen.

Conducted by _______________

C) SYNCHRO MENU

1) SYNCHRO menu is used to independently configure each of the 2 synchro channels at connector J2, for heading, roll or pitch synchro output. Synchro scaling from 1X to 360X is available (e.g. 2X, 36X, 180X, etc.). Refer to paragraph 3-9.1 and Table 3-1 of reference (c).

In this particular installation set Channel 1 to H (Heading) and 1X Speed and set Channel 2 to H (heading) and 36X Speed.

LEVEL 1 MENU

SERIAL

>SYNCHRO

SYSTEM ALIGNMENT

OTHER

LEVEL 2 MENU

HRP SPD

Channel #1 >H 1X Channel #2 R 36X

HRP: H = Heading, R = Roll, P = Pitch SPD = Synchro Scaling = Any value from 1X to 360X Display drops leading 0’s (e.g. 001X => 1X).

(a) Set Synchro output #1 to Heading (H) and output to X1 Speed.

Conducted/Verified by_______________

(b) Set Synchro output #2 to Heading (H) and output to X36 Speed

Conducted/Verified by_______________

D) SYSTEM ALIGNMENT MENU

1) SYSTEM ALIGNMENT menu allows entry /change of the mechanical mounting offsets selected at installation (i.e. the orientation of the gyro if it was not positioned with its front-rear azimuth marks in line with the ship’s centerline and if the roll and pitch of the mounting surface were not exactly 0 degrees). Since the MK-27F Gyro can be mounted at any angle to the ship’s centerline, the HDG entry in the SYSTEM ALIGNMENT menu is used to correct for the mounting position as it deviates from the fore-aft centerline (or heading) of the ship. The value entered is subtracted from the gyro heading; e.g. if the gyro is mounted facing starboard the heading offset should be increased by +1 degree. Roll and pitch offsets are aligned similarly; the offset modifies the roll or pitch output. In STANAG 4222 convention, (see OTHER menu), the offset is subtracted from the roll and pitch, and in US NAVY convention it is added to the roll and pitch. Heading is not affected by the selection of STANAG 4222 or US NAVY convention.

NOTE

In typical installations of the gyrocompass for navigation use, the roll and pitch offsets are left at zero.

NOTE

If roll and pitch offsets are used, the offsets should be entered in the following order to ensure correct alignment with the ship axes: HDG first, then PITCH, then ROLL last.

NOTE

For alignment (entering offsets) references, the side of the gyro with the connectors is the forward (0000) side of the gyro and the side of the gyro with the display is the aft (1800) side of the gyro. This is important when entering offsets (alignment) into the gyro.

a) After the gyro is in the ALIGNED state, the actual heading, roll and pitch are displayed next to these offset entries. This allows real-time adjustment of the heading, roll or pitch error. The change to ALIGNED state occurs approximately 12- 15 minutes after power up. However, the gyro error determined before two (2) hours after power-up is not as accurate as after the gyro is fully settled which occurs within not later than two (2) hours after gyro power-up.

NOTE

Verify the gyro alignment (offset) using the settled gyro heading compared to the ship’s true heading. It is best to let the MK27F Gyro settle at least two (2) hours before checking the gyro error (MK27-F Gyro heading compared to reference (master gyro) heading). If gyro error is out of specification, change the system alignment values (offsets) as required to eliminate the gyro error.

LEVEL 1 MENU

SERIAL

SYNCHRO

>SYSTEM ALIGNMENT

OTHER

LEVEL 2 MENU

OFFSETS ACTUAL

HDG >+000.00 ± xxxx.x PITCH +000.00 ± xxxx.x ROLL +000.00 ± xxxx.x

OFFSETS: Known differences from centerline and Roll / Pitch axis.

ACTUAL: Gyro shows current heading, Roll and Pitch values (after (ALIGNED).

Maximum Heading offset is 179.90. Maximum Roll and Pitch offset allowed is 1800.

Conducted/Verified by _______________

E) OTHER MENU

1) OTHER menu contains the means for operator to set the Rate Of Turn (ROT) filter time constant (in seconds), the roll and Pitch convention (US NAVY or STANAG 4222) and to see (read only) the software version (part number and revision letter) of the software that is installed in the gyro.

LEVEL 1 MENU

SERIAL

SYNCHRO

SYSTEM ALIGNMENT

>OTHER

LEVEL 2 MENU

ROT TC > xxx.x SEC

SIGNTYPE STANAG 4222

VERSION XXXXXXXX

ROT TC (Rate of Turn Time Constant) = xxx.x (SEC = seconds) SIGNTYPE = Either US NAVY or STANAG 4222 sign convention.

VERSION = Software version installed in gyro (p/n and revision letter)

2) ROT Filter Time Constant The typical formula for Rate of Turn time constant is as follows: ROT Time Constant = ship’s length (feet) / 1.69 x Cruising Speed (knots) Yypical values might be 8 – 10 seconds for a tug, 14 seconds for a DDG, 35 seconds for a large tanker, and 45 seconds for a large ore carrier. It is suggested that the operator enter a value that will match the ship’s response so that there is not any higher frequency noise, motion, or vibration effects in the rate of turn output. The default setting is 1.0 seconds.

Conducted/Verified by______________

3) Roll and Pitch Sign Convention:

The Roll and Pitch sign convention options are as follows:

US NAVY: Positive pitch is Bow Down, Positive Roll is Starboard Up.

STANAG 4222: Positive Pitch is Bow Up, Positive Roll is Port Up.

The gyro alignment (offsets) for Roll and Pitch polarity reverse when the convention is changed.

Also refer to SYSTEM ALIGNMENT menu.

4) After all configuration data has been entered and checked, exit back into the Off-Line Mode menu using the LEFT <key> (←). (Note: The key may need to be pushed several times depending on where you are in the sub-menus). Observe that the following OFF-Line Mode menu is displayed.

>EDIT SETUP

RECALL SETUP

SAVE SETUP

SIMULATE / VIEW I/O

5) Use the UP <key> (↑) or DOWN <key> (↓) to highlight the SAVE SETUP menu.

EDIT SETUP

RECALL SETUP

>SAVE SETUP

SIMULATE / VIEW I/O

6) Use the RIGHT <key> (→) to select the SAVE SETUP menu. Observe that the following is displayed. The “PUSH” will be blinking to alert the operator that action is required.

PUSH

SETUP BUTTON

AND WAIT FOR

CONFIRMATION

7) Inside the gyro, locate the SETUP button and press the SETUP button once.

8) Observe that ‘SAVING” is displayed and blinking which confirms that the configuration data is being saved.

SAVING

9) After a few seconds the following (see below) will be displayed which confirms that the configuration data has been saved into the gyro’s memory.

THE SETUP HAS

BEEN SAVED

10) Use the LEFT <key> (←) to exit the displayed menu and return to the following Off-Line Mode menu.

EDIT SETUP

RECALL SETUP

>SAVE SETUP

SIMULATE / VIEW I/O

11) On the gyro, set Power Switch to OFF (down position).

Conducted and/or Verified by _______________

8) OFF-LINE TESTING

A) The following steps are recommended for performing OFF-Line testing

1) On the gyro, set the power switch to On, (up position).

2) Inside the gyro, locate the SETUP button and press the SETUP button once during the 45-second startup period.

3) Observe that the Off-Line Mode menu is displayed.

>EDIT SETUP

RECALL SETUP

SAVE SETUP

B) WRAP I/O TEST CONNECTION J4

1) A wrap test is recommended of the serial ports at connector J4 to confirm that the gyro can output and receive input messages at the pins common to J4.

2) The following steps provide guidance for conducting this connector J4 wrap test. Also refer to paragraph 5-5.3.1.3 and table 5-3 of reference (c) for a description of the menus and Operator selections. ATTENTION: In order to perform the serial wrap I/O test, BIT test Plug (p/n 4600382) must be connected to connector J4 or J4 must be jumpered in accordance with the wiring information provide in paragraph 5-5.3.1.3 and Table 8-5 of reference (c).

3) While in the Off-Line Mode menu, use the UP <key> (↑) or DOWN <key> (↓) to highlight the SIMULATE /VIEW I/O menu

EDIT SETUP

RECALL SETUP

SAVE SETUP

>SIMULATE / VIEW I/O

4) Use the RIGHT <key> (→) to select SIMULATE / VIEW / I/O menu. Observe that the following menu is displayed which includes WRAP I/O menu

> SIMULATE OUTPUTS

VIEW INPUT PORTS

WRAP I/O

TEST ALARM RELAY

5) Using the UP <key> (↑) and DOWN <key> (↓), highlight the WRAP I/O menu.

SIMULATE OUTPUTS

VIEW INPUT PORTS

>WRAP I/O

TEST ALARM RELAY

6) Use the RIGHT <key> (→) to select WRAP I/O menu. Observe that a display similar to the following is displayed showing PASS / FAIL status of the wrap test for each of the 4 output and input ports at connector J4.

PORT 1 10/10 PASS

PORT 2 10/10 FAIL

PORT 3 10/10 PASS

PORT 4 10/10 FAIL

If any port fails the test, troubleshoot the problem. Refer to paragraph 5-3.4 of reference “c”.

7) Use the LEFT <key> (←) several times as necessary to exit the displayed menu and return to the following Off-Line Mode menu.

>EDIT SETUP

RECALL SETUP

SAVE SETUP

SIMULATE / VIEW I/O

8) Disconnect the BIT Test Plug p/n 4600382 from connector J4 or remove the jumpered wires from connector J4 that were used to run the wrap test and re-connect proper connector.

Items a thru h Conducted by _______________

C) SIMULATED OUTPUT TEST

The following steps provide guidance for outputting simulated data from the MK27-F Gyro.

Refer to table 5-3 of reference (c) for a description of the menus and Operator selections that are described here.

1) Connect the ship’s interface cable plug P4 to the gyro connector J4 to transmit serial data to the ship’s equipment if not currently connected.

2) Confirm that external equipment that uses outputs from the gyro is energized, operating properly and is correctly interfaced to the gyro.

3) While in the Off-Line Mode menu display, use the UP <key> (↑) or DOWN <key> (↓) to highlight SIMULATE / VIEW I/O menu

EDIT SETUP

RECALL SETUP

SAVE SETUP

>SIMULATE / VIEW I/O

4) Use the RIGHT <key> (→) to select SIMULATE / VIEW I/O menu. Observe that the following menu is displayed which includes SIMULATE OUTPUTS.

>SIMULATE OUTPUTS

VIEW INPUT PORTS

WRAP I/O

TEST ALARM RELAY

5) Using the UP <key> (↑) and DOWN <key> (↓) highlight the SIMULATE OUTPUTS menu.

>SIMULATE OUTPUTS

VIEW INPUT PORTS

WRAP I/O

TEST ALARM RELAY

6) Use the RIGHT <key> (→) to select SIMULATE OUTPUTS menu. Observe that the following menu is displayed.

HDG ±XXX.XO

ROLL ± XX.XO

PITCH ± XX.XO

VALID XXX TYPE XXX

7) Using the Keypad keys (also see paragraph 2-2.2 of reference (c)) enter the value of Heading (HDG), Roll and Pitch that are desired simulated outputs. Assign YES to the VALID selection. Enter SIN or FIX for the TYPE selection.

Reference information:

HDG: Sign (+ or -) and Heading angle (3 digits) is entered. Note: A maximum of

±1800 can be entered so any entered heading in the range of 0000 and 1800 is output as a true heading and any entry in the range of -0000 and

179.90 is output as a corresponding true heading of 3590 and 180.10. Example:

An entry of -470 produces a simulated output of 3130

ROLL: Sign (+ or -) and Roll angle (2 digits) PITCH: Sign (+ or -) and Pitch angle (2 digits) VALID: YES or NO (assigned condition for output data). Serial Outputs: If VALID is set to NO, then messages are sent will null fields. If VALID is set to YES, then messages are sent with Operator entered simulated data marked as valid. Synchro/Step outputs: If VALID is set to NO, then Synchro/Step outputs are not changed. If VALID is set to YES, then Synchro/Step outputs corresponding to the Operator entered simulated values are output.

Note: Alarm relay (A3K1) is used to set outputs to VALID or INVALID.

INVALID outputs should not be used for navigation purposes. Refer to paragraph 3-9.4 of reference (e).

TYPE: OFF (no output), SIN (sine wave output), or FIX (Constant/fixed output).

To access TYPE, when cursor is at far left of bottom line, press DOWN <key> (↓) to move to TYPE, the press RIGHT <key> (→) to get XXX option:

OFF (no output), SIN (sine wave output), or FIX (constant or fixed output).

a) After the last selection has been made, exit that line of the menu using the RIGHT <key> (→). This activates the final simulated output.

b) Check the external equipment to confirm that the selected simulated output is being received by the external equipment.

c) To change simulated output data, use the Keypad keys to highlight and then to change the desired selection. Exit the selection lines using the RIGHT <key> (→) to activate the simulated output.

d) After simulated outputs testing is complete, use the LEFT <key> (←) to exit the displayed menu and return to the following Off-Line Mode menu. Exiting the SIMULATED OUTPUTS menu halts all simulated outputs from the gyro (i.e. sets alarm Relay (A3K1 to OFF)

EDIT SETUP

RECALL SETUP

>SAVE SETUP

Items a thru k Conducted by _______________

D) TEST ALARM RELAY

While in the Off-Line Mode the operation of the alarm Relay (A3K1) can be checked by toggling it ON and OFF and then checking external equipment to confirm that the alarm from the gyro changes accordingly. This particular installation does not include an alarm connected to this relay, however, conduct the test to verify internal operation. The circuit will be designated for future use if needed.

The following steps provide guidance for testing the alarm Relay (A3K1). Refer to paragraph 5-5.3.1.4 of reference “c” for a description of the menus and Operation selections that are described here.

1) Confirm that the external equipment which uses the alarm output from the gyro is energized, operating properly and is correctly interfaced to the gyro.

2) While in the Off-Line Mode menu display, use the UP <key> (↑) or DOWN <key> (↓) to highlight SIMULATE /VIEW I/O menu.

EDIT SETUP

RECALL SETUP

SAVE SETUP

>SIMULATE / VIEW I/O

3) Use the RIGHT <key> (→) to select SIMULATE / VIEW I/O menu. Observe the following menu is displayed when includes TEST ALARM RELAY.

>SIMULATE OUTPUTS

VIEW INPUT PORTS

WRAP I/O

TEST ALARM RELAY

4) Using the UP <key> (↑) and DOWN <key> (↓) highlight the TEST ALARM RELAY menu.

SIMULATE OUTPUTS

VIEW INPUT PORTS

WRAP I/O

>TEST ALARM RELAY

5) Observe that the following menu is displayed. Where “XXX” is either ON (No Fault condition or OFF (Fault condition).

RELAY IS XXX

>TOGGLE RELAY

6) Use the UP <key> (↑) and DOWN <key> (↓) to highlight the TOGGLE RELAY selection. Use the RIGHT <key> (→) to toggle the relay between ON (No Fault = VALID outputs) position and the OFF (Fault = INVALID outputs) position. Check external equipment to confirm that the equipment is receiving the correct alarm.

(contact closure or VALID/INVALID output indications in the serial message) output from the gyro.

7) After the alarm relay test is complete, use the Left <key> (←) to exit the displayed menu and return to the following Off-Line menu which sets the alarm Relay to OFF.

>EDIT SETUP

RECALL SETUP

SAVE SETUP

SIMULATE / VIEW I/O

8) On the gyro, set Power Switch to OFF (down position). Close and secure the top cover of the gyro.

Items a thru h Conducted by _______________

This completes MK27-F Gyro setting-to-work providing that no abnormal conditions remain uncorrected. The gyro is ready for normal operation. (See table 2-1 of reference “c” for Start Up in On-Line Mode.

9) ACCEPTANCE/REJECTION CRITERIA

DEVIATION, IF ANYAND AUTHORITY:

REMARKS:

TEST/INSPECTION CONDUCTED:

TEST CONDUCTOR DATE TEST SUPERVISOR/QC VERIFICATION

EQUIPMENT USED SERIAL NO. CALIBRATION DATE

PROJECT STAFF ACCEPTANCE/REVIEW

DATE:__________USCG YARD-___________________

Title w/ Cutter Class

ATTACHMENT #1

Vessel Name/Hull:

MK27-F Gyro part Number: 4800880-1 or 4800880-2 (circle one) Serial Number:

Software version: Part Number 4301229 Version/Revision:

Alignment Offsets Sign Angle (Degrees)

Heading Roll Pitch

Maximum Heading Offset allowed is 179.9 degrees Sign Convention: US Navy: positive Pitch is Bow Down, Positive Roll is Starboard Up.

STANAG 4222: positive pitch is Bow Up, positive Roll is Port Up. Heading angle is measured in a horizontal plane, increasing in a clock-wise direction.

Connector J1: +_____ VDC Available (+24VDC Required) Connector J2 (input): External Synchro Reference Voltage Available: Yes / No (circle one) Characteristics (if yes): ____VAC ______HZ _______ Phase Allowed input Synchro Reference Characteristics:

115 VAC, 400 Hz, 1 Phase for MK27-F Gyro version p/n 4800880-1 or 115 VAC, 60 Hz, 1 Phase for MK27-F Gyro version p/n 4800880-2 Connector J2 (Output) Channel H/R/P Scaling (Speed) Synchro reference

Two Channels: H (Heading), R (Roll), or P (Pitch) 25 ma/channel, 2VA Max/channel Scaling (Speed) Available: 1X to 360X Synchro reference characteristics; internally Generated: 115 VAC, 400 Hz, 1 Phase, 50 watts Max for version p/n 4800880-1 OR Externally Generated: 115 VAC, 1 Phase, 400 Hz for version p/n 4800880-1 or 60 Hz for version p/n 4800880-2

Connector J3: STEP Output Connected: Yes / No (circle one) Connector J3: Alarm output Connected: Yes / No (circle one) Connector J4:

I/O Port Baud Rate Message ID Message Rate Notes Input 1 Same as Output 1 Input 2 Same as Output 2 Input 3 Same as Output 3 Input 4 Same as Output 4 Output 1 Output 2 Output 3 Output 4

Input Messages Available: From GPS: GNS, GGA, GLL and from Log: VTG, VBW, VHW Output Messages Available, HDT, ROT, XDR, PRP, ATT (Maximum 3 per port) Baud Rates Available: 4800, 9600, 19200, 38400, 57600, 115200 baud 91 Rate/Port Message Rates Available for Output messages: 1, 2, 10, 25, 50, 100 Hz (1 Rate/Message

Vessel Name/Hull: AS REQUIRED MK27-F Gyro part Number: 4800880-1 or 4800880-2 (circle one) Serial Number:

Software version: Part Number 4301229 Version/Revision:

Alignment Offsets Sign Angle (Degrees)

Heading Roll Pitch

Maximum Heading Offset allowed is 179.9 degrees Sign Convention: US Navy: positive Pitch is Bow Down, Positive Roll is Starboard Up.

STANAG 4222: positive pitch is Bow Up, positive Roll is Port Up. Heading angle is measured in a horizontal plane, increasing in a clock-wise direction.

Connector J1: + 24_ VDC Available (+24VDC Required) Connector J2 (input): External Synchro Reference Voltage Available: Yes / No (circle one) Characteristics (if yes): 110VAC ______HZ 60 1 Phase Allowed input Synchro Reference Characteristics:

115 VAC, 400 Hz, 1 Phase for MK27-F Gyro version p/n 4800880-1 115 VAC, 60 Hz, 1 Phase for MK27-F Gyro version p/n 4800880-2 Connector J2 (Output) Channel H/R/P Scaling (Speed) Synchro reference

1 H X1 110 VAC 60 HZ

2 H X36 110 VAC 60 HZ

Two Channels: H (Heading), R (Roll), or P (Pitch) 25 ma/channel, 2VA Max/channel Scaling (Speed) Available: 1X to 360X Synchro reference characteristics; internally Generated: 115 VAC, 400 Hz, 1 Phase, 50 watts Max for version p/n 4800880-1 OR Externally Generated: 115 VAC, 1 Phase, 400 Hz for version p/n 4800880-1 or 60 Hz for version p/n 4800880-2

Connector J3: STEP Output Connected: Yes / No (circle one) Connector J3: Alarm output Connected: Yes / No (circle one) Connector J4:

I/O Port Baud Rate Message ID Message Rate Notes Input 1 4800 GGA, GLL, (GP37) Input 2 4800 VBW (SRD-500) Input 3 N/A Input 4 N/A Output 1 4800 HDT, ROT, XDR Output 2 Output 3 Output 4

Input Messages Available: From GPS: GNS, GGA, GLL and from Log: VTG, VBW, VHW Output Messages Available, HDT, ROT, XDR, PRP, ATT (Maximum 3 per port) Baud Rates Available: 4800, 9600, 19200, 38400, 57600, 115200 baud 91 Rate/Port Message Rates Available for Output messages: 1, 2, 10, 25, 50, 100 Hz (1 Rate/Message

ATTACHMENT #2