WI 0405 REFERENCE TV-DTS SYSTEM PERFORMANCE SPECIFICATION TEST SHEET.docx

DOCX document 32 KB Posted Jul 22, 2021

Attached to: USNS ARCTIC REGULAR OVERHAUL DRY DOCKING 2022 Federal contract opportunity
Solicitation number: N3220521R4207
Issued by: Department of the Navy Military Sealift Command

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Written by GovTribe AI · Dec 28, 2023

This document contains a performance specification test sheet for a marine stabilized TV-DTS antenna system. It outlines inspection and testing procedures to verify proper operation of below deck equipment, above deck equipment, control and RF cabling, and system parameters. Performance tests include determining compass offset, recording system parameters from the ADE and IMU, powering up and verifying software and basic operation, testing axis operation of the pedestal and IMU, operational configuration including satellite selection and acquisition, and requirements for findings, observations and signatures upon completion.

The related federal contract opportunity is a pre-solicitation notice seeking sources for the regular overhaul and dry docking of the USNS ARCTIC in January 2022 to be conducted by the Department of the Navy Military Sealift Command.

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TV-DTS SYSTEM PERFORMANCE SPECIFICATION TEST SHEETS

SHIP:

Date of Inspection: _____________ Location of Ship: _____________

MARINE STABILIZED TV-DTS ANTENNA SYSTEM

System S/N

BELOW DECKS EQUIPMENT (BDE)

BDE Location:

(Comp. Name/Number)

ABOVE DECK EQUIPMENT (ADE)

ADE Location (Deck):

EQUIPMENT SERIAL NUMBER

Antenna Control Unit (AL-7200-3M) Uninterruptible Power Supply _______________ Servo Driver Unit (AL-7200-2-SDU) Inertial Measurement Unit (AL-7200-IMU) X/Y Pedestal (AL-7204-1) Radome (17-0502) Base (17-1347) Reflector (96732/Q) C-Band Feed Assy (18-0300)

C LNB

Filter C LNB (Spare) Ku-Band Feed Assy GPS Antenna Interlock Assembly SDU/IMU Cable __________

SYSTEM PARAMETERS

AL-7200-IMU-Mk _______________

IMU PPR

IMU X Offset IMU Y Offset

X MTR PPR NUM

Y MTR PPR NUM

X DEN

Y DEN

X RG. Offset Y RG. Offset X RG. Scale Offset Y RG. Scale Offset Z RG. Scale Offset

Pedestal PPR Pedestal X Offset Pedestal Y Offset

1.0 SYSTEM STATUS (SAT/UNSAT – If UNSAT, see Comments)

1.1	INITIAL SYSTEM EXAMINATION
A.	Below Deck Equipment (BDE)
ACU Condition:		ڤ SAT ڤ UNSAT
Software Version:		ڤ SAT ڤ UNSAT
Satfile Updated:		ڤ SAT ڤ UNSAT
B.	Above Deck Equipment (ADE)
Pedestal Condition:		ڤ SAT ڤ UNSAT
SDU Condition:			ڤ SAT ڤ UNSAT
IMU Condition:			ڤ SAT ڤ UNSAT
C.	Control & RF Cabling
Control Cables:		ڤ SAT ڤ UNSAT
Rack Jumpers:			ڤ SAT ڤ UNSAT
RF Cables:			ڤ SAT ڤ UNSAT

1.2 INSPECTION COMMENTS: _____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

2.0	SYSTEM GROOM
A.	BDE Modifications & Upgrades
	LCD/TFT Front Panel Cleaning		ڤ SAT ڤ UNSAT
	Software Upgraded				ڤ SAT ڤ UNSAT
	Satellite Database Update		ڤ SAT ڤ UNSAT
	Filters Cleaned				ڤ SAT ڤ UNSAT
B.	ADE Modifications & Upgrades
	IMU (Desiccant &/or Belt Replacement)	ڤ SAT ڤ UNSAT
	SDU (Desiccant Replacement)		ڤ SAT ڤ UNSAT
	X/Y Pedestal					ڤ SAT ڤ UNSAT
	GPS Antenna					ڤ SAT ڤ UNSAT
	C-Band Filter Assembly			ڤ SAT ڤ UNSAT
	Antenna Tripod Alignment			ڤ SAT ڤ UNSAT
	Interlock Assembly				ڤ SAT ڤ UNSAT

3. PERFORMANCE TEST

The following test will be conducted to verify the proper operation of the TV-DTS equipment as a functional system.

Code		Description
SAT		Installed-Acceptable
UNSAT	Unacceptable-Requires correction
N/A		Not Applicable

3.1 EQUIPMENT TEST AND VERIFICATION

The test results must demonstrate that each test scenario has been completed and is in compliance with the stated objective. Indication of “satisfactory” for each test will constitute a successful test scenario.

3.2	DETERMINE COMPASS OFFSET (Difference between ship’s heading and System Zero).
Offset:			____
Gyro Interface Type:		____

3.3	RECORD FOLLOWING FROM ADE
IMU X Offset		____
IMU Y Offset		____
IMU PPR			____
RG-X				____
RG-Y				____
RG-Z				____
Pedestal X		____
Pedestal Y		____
Pedestal PPR		____

3.4 POWER UP SYSTEM ڤ SAT ڤ UNSAT

Open the ACU front-panel door and turn ON the power switch. Ensure that the Banner/Self-Test screen appears for a period of 10 seconds. (A 10-to-0 countdown is displayed).

3.4 .1 SOFTWARE VERIFICATION

List installed system application software with version information in the space below.

Software Version: ________

3.4.2 ACU Power-Up

Ensure that after the self-test procedure is successfully completed, the display switches automatically to the Basic Operation screen. Verify the following:

A. Compass reading corresponds to Ships Heading. ڤ SAT ڤ UNSAT B. GPS reading is accurate for Ships Present

	Location.		ڤ SAT ڤ UNSAT
C. Current mode is Standby.		ڤ SAT ڤ UNSAT
D. IMU Status is Unlocked.		ڤ SAT ڤ UNSAT

3.4.3 System Axis Operation

A. From the Basic Operation Screen press the “O” key to go to Operation Screen.

B.	Enter Password. (Operation Screen Appears).	ڤ SAT ڤ UNSAT
C.	Select “M” for MAINTENANCE SCREEN.		ڤ SAT ڤ UNSAT
C.	Select “S” for SELECT WINDOW			ڤ SAT ڤ UNSAT Select Pedestal – X.				ڤ SAT ڤ UNSAT
F.	Go to Configure mode and Verify:
1.	Encoder Offset					____
2.	Encoder PPR					____
G. Go to MOD					ڤ SAT ڤ UNSAT
H.	Select Slew.						ڤ SAT ڤ UNSAT
J.	Slowly, Slew X-axis NEG and POS.		ڤ SAT ڤ UNSAT

(Checking movement of X-axis).

K.	Select Encoder Initialization, and Verify:
1.	Zero Flashing						ڤ SAT ڤ UNSAT
2.	Positions Changes					ڤ SAT ڤ UNSAT
3.	Flashing Zero disappears				ڤ SAT ڤ UNSAT
L.	Ensure Antenna is in 0:0 Position for X-axis.	ڤ SAT ڤ UNSAT	Select Pedestal –Y.					ڤ SAT ڤ UNSAT
N.	Go to Configure mode, and Verify:
1. Encoder Offset						____
2. Encoder PPR						____
O.	Go to MOD							ڤ SAT ڤ UNSAT
P.	Select Slew.							ڤ SAT ڤ UNSAT
Q.	Slowly, Slew Y-axis NEG and POS.			ڤ SAT ڤ UNSAT

(Checking movement of Y-axis).

R.	Go to MOD					ڤ SAT ڤ UNSAT
S.	Select Encoder Initialization and Verify:
1. Zero Flashing				ڤ SAT ڤ UNSAT
2. Position Changes			ڤ SAT ڤ UNSAT
3. Flashing Zero disappears		ڤ SAT ڤ UNSAT
T.	Ensure antenna is in 0:0 position for X and Y-axis (ZENITH). Select IMU Alignment and verify.	ڤ SAT ڤ UNSAT
1. Inclinometer X or RG-X		____
2. Inclinometer Y or RG-Y		____
3. RG-Z					____
V.	Select IMU-X.
W.	Go to Configure mode, and Verify:
1. Encoder Offset			____
2. Encoder PPR				____
X. Go to MOD					ڤ SAT ڤ UNSAT
Y. Y.	Select Slew.				ڤ SAT ڤ UNSAT

(Checking movement of X axis).

Z. Slowly, Slew X axis Neg. and POS.	ڤ SAT ڤ UNSAT
AA. Go to MOD		ڤ SAT ڤ UNSAT

BB. Select Encoder Initialization and Verify:

1.	Zero Flashing			ڤ SAT ڤ UNSAT
2.	Position Changing		ڤ SAT ڤ UNSAT
3.	Flashing Zero disappears	ڤ SAT ڤ UNSAT
CC. Select IMU-Y.			ڤ SAT ڤ UNSAT

DD. Go to configure mode and Verify:

1. Encoder Offset					____
2. Encoder PPR					____
EE. Go to MOD						ڤ SAT ڤ UNSAT
FF. Select Slew.					ڤ SAT ڤ UNSAT
GG. Slowly, Slew Y axis NEG and POS.			ڤ SAT ڤ UNSAT (Checking movement of Y axis).
HH. Go to MOD						ڤ SAT ڤ UNSAT
II.	Select encoder Initialization and Verify:
1.	Zero Flashing					ڤ SAT ڤ UNSAT
2.	Position Changing				ڤ SAT ڤ UNSAT
3.	Flashing Zero disappears			ڤ SAT ڤ UNSAT
JJ. Ensure IMU is in 0:0 position for X and		ڤ SAT ڤ UNSAT

Y axis.

KK. Press the “Esc” key and return to the operation screen. ڤ SAT ڤ UNSAT

3.5	OPERATIONAL CONFIGURATION
A.	Press the “T” key for System Configuration.	ڤ SAT ڤ UNSAT Compass Setup
1.	Select correct Gyro type.				________
2.	Enter Compass Offset.					________
3.	Enter Filter value (normally 1)			ڤ SAT ڤ UNSAT
C.	Press the “S” key to select a Satellite.		ڤ SAT ڤ UNSAT
D.	Select desired Satellite. (Listed below are satellites

with receivers normally supplied to copy signal) C band 21.5 Deg. West AFRTS Ku Band 100 Deg. West DSS C Band 180 Deg. West AFRT

E.	Select Desired Tracking Channel.		________
Select “M” to go to Maintenance Screen.		ڤ SAT ڤ UNSAT
Select “S” to Select Receiver.			ڤ SAT ڤ UNSAT

Verify the following:

1. Tuner Used		________
2.	Channel Frequency	________

(Calculate frequency required for selected Satellite and Channel)

3.	LNB Voltage		DISABLED
4.	Band Width (18 MHz)	ڤ SAT ڤ UNSAT
5.	Band (C or Ku).	C- BAND

I. Verify correct feed assembly on the antenna (C-Ku). ڤ SAT ڤ UNSAT

3.6	SATELLITE ACQUISITION
3.6.1	AUTOMATIC OPERATION
A.	Press the “O” key and Select Restart and Verify:

1. System Performing an Automatic Restart.

a. System Mode: Encoder Initialization is being performed. (Last up to 40 Seconds).

1. Antenna (X and Y axis) is moved to the 0:0 (ZENITH) Position.

2. IMU Achieves 0:0 Position.

b. System Mode: Changes to IMU Initialization. (Lasts 240 - 360 Seconds). IMU Status chances from unlocked to locked.	System mode will then change to Point-to –Satellite, then to acquire if a an AGC signal is achieved above the set threshold mode will then change to Step-track. If a picture was achieved on the TV at this time the system offset is relatively close. Perform the following checks to fine tune the Compass offset.
c.	Mode: select Point-to-Satellite.

Verify the following:

1.	Antenna Target	Az. = _____, El. = _____
2.	Antenna position changes in Azimuth and

Elevation. When Antenna Target is achieved,

Antenna Stops.			ڤ SAT ڤ UNSAT
d.	AGC level			_____
e.	Change mode to STEP-TRACK system should search for the Highest AGC level at the selected tracking frequency. The AGC reading should be above the threshold setting if not reset threshold to 2 to 3 dB below AGC if a picture has be received.
f.	Picture on TV Monitor present.	ڤ SAT ڤ UNSAT

(Press menu on Power-Vu for system status)

1. Record BER			_____
2. Record Signal Level		_____
3. Record AFC			_____
3.7	AUTOMATIC RESTART
A.	After achieving a satisfactory picture on the monitor.

1. Change system to Auto Restart mode.

2. Determine a new stow position if required X = ____ AND Y =_____

3. Verify operation and settings for the following modes in both C and Ku band operation:

a. Step-Track

b. Search

c. Box Scan

4. Verify the following system settings

a. Satellite Database set for

(1) C and Ku operation

(2) Minimum elevation 10 Deg

b. GPS default location set to present ships location

5. Save: System, Maintenance, and Operation.

6. Stow Antenna.

7. Back-Up configuration to 3.5” floppy disk.

8. Restart system and verify Automatic Operation sequence from Basic Operations screen.

a. Mode:	Encoder initialization (40 seconds)
b. Mode:	IMU initialization (240-360 seconds)

c. IMU Status: IMU locked

d. Mode:	Point-to Satellite
e. Mode:	Acquire
f. Mode:	Step-track
9. Picture/Lock Achieved		ڤ SAT ڤ UNSAT
10. Antenna Deviation.			_____

4.0 FINDINGS/OBSERVATIONS:

FE Name:	_________________________
FE Signature:	_________________________

[Additional Comments on Back of Inspection Sheet]

File details come from the government source that posted it. Updated Jul 22, 2021.