Sea Tel 9797B-70 C-Band TX/RX, Installation And Operation Manual

Table of Contents 

vii

7.

MAINTENANCE AND TROUBLESHOOTING .............................................................................................................................. 7-1

7.1.

W

ARRANTY 

I

NFORMATION

 .......................................................................................................................................................................... 7-1

7.2.

R

ECOMMENDED 

P

REVENTIVE 

M

AINTENANCE

 .......................................................................................................................................... 7-1

7.2.1.

Check ACU Parameters........................................................................................................................................................... 7-2

7.2.2.

Latitude/Longitude Auto-Update check ......................................................................................................................... 7-2

7.2.3.

Heading Following..................................................................................................................................................................... 7-2

7.2.4.

Azimuth & Elevation Drive .................................................................................................................................................... 7-2

7.2.5.

Test Tracking ................................................................................................................................................................................ 7-2

7.2.6.

Visual Inspection  -  Radome & Pedestal ....................................................................................................................... 7-2

7.2.7.

Mechanical Checks ................................................................................................................................................................... 7-2

7.2.8.

Check Balance ............................................................................................................................................................................. 7-2

7.2.9.

Observe Antenna Initialization ........................................................................................................................................... 7-3

7.3.

T

ROUBLESHOOTING

 ....................................................................................................................................................................................... 7-3

7.3.1.

Theory Of Stabilization Operation .................................................................................................................................... 7-3

7.3.2.

Antenna Initialization (Series 97B & Series 00 ) ........................................................................................................ 7-3

7.3.3.

Troubleshooting using DacRemP ...................................................................................................................................... 7-4

7.3.4.

Antenna Loop Error Monitoring ......................................................................................................................................... 7-5

7.3.5.

Reference Sensor Monitoring ............................................................................................................................................. 7-6

7.3.6.

Open Loop Rate Sensor Monitoring ................................................................................................................................. 7-7

7.3.7.

Fine Balance and Monitoring Motor Drive Torque .................................................................................................. 7-8

7.3.8.

Open Loop Motor Test ......................................................................................................................................................... 7-10

7.3.9.

To Disable/Enable DishScan ............................................................................................................................................. 7-10

7.3.10.

Satellite Reference Mode ................................................................................................................................................... 7-11

7.3.11.

To Read/Decode an ACU Error Code 0008 (Pedestal Function Error): ...................................................... 7-11

7.3.12.

Remote GPS LAT/LON Position: ....................................................................................................................................... 7-14

7.4.

M

AINTENANCE

 ............................................................................................................................................................................................. 7-15

7.4.1.

C-Band Circular Tx Polarity change .............................................................................................................................. 7-15

7.5.

A

LIGNING THE DROP

-

IN FEED

,

 OF THE 

A

NTENNA

 .................................................................................................................................. 7-18

7.5.1.

Balancing the Antenna ......................................................................................................................................................... 7-19

7.5.2.

To Adjust Tilt: ............................................................................................................................................................................ 7-19

7.5.3.

To Reset/Reinitialize the Antenna: ................................................................................................................................. 7-20

7.6.

P

EDESTAL 

C

ONTROL 

U

NIT 

C

ONFIGURATION 

(

XX

97B

&

 XX

00) ......................................................................................................... 7-21

7.6.1.

To configure the PCU; .......................................................................................................................................................... 7-21

7.6.2.

MODEL CONFIGURATION NUMBERS ......................................................................................................................... 7-21

7.7.

A

NTENNA 

S

TOWING 

P

ROCEDURE

 ............................................................................................................................................................. 7-21

8.

9797B-70 TECHNICAL SPECIFICATIONS .................................................................................................................................. 8-1

8.1.

A

NTENNA 

R

EFLECTOR

 ................................................................................................................................................................................... 8-1

8.2.

F

EED 

A

SSEMBLIES

 .......................................................................................................................................................................................... 8-1

8.2.1.

C-Band TXRX Feed Assembly .............................................................................................................................................. 8-1

8.3.

RF

E

QUIPMENT

 .............................................................................................................................................................................................. 8-1

8.4.

N

ORSAT 

3000

S

ERIES  

C-B

AND 

LNB ....................................................................................................................................................... 8-1

8.5.

P

EDESTAL 

C

ONTROL 

U

NIT 

(PCU) .............................................................................................................................................................. 8-2

8.6.

144”

R

ADOME 

A

SSEMBLY

 ........................................................................................................................................................................... 8-2

8.7.

U

NLIMITED 

A

ZIMUTH 

M

ODEMS 

(3

C

HANNEL

) ....................................................................................................................................... 8-2

8.8.

S

TABILIZED 

A

NTENNA 

P

EDESTAL 

A

SSEMBLY

 ........................................................................................................................................... 8-3

8.9.

E

NVIRONMENTAL 

C

ONDITIONS 

(ADE) ..................................................................................................................................................... 8-4

8.10.

C

ABLES

 ............................................................................................................................................................................................................. 8-4

8.10.1.

Antenna Control Cable (Provided from ACU-MUX) ................................................................................................. 8-4