Table of Contents
viii
12.2.
L
ATITUDE
/L
ONGITUDE
A
UTO
-U
PDATE CHECK
..................................................................................................................................... 12-1
12.3.
S
HIP
H
EADING
–
G
YRO
C
OMPASS
F
OLLOWING
C
HECK
....................................................................................................................... 12-1
12.4.
A
ZIMUTH AND
E
LEVATION
D
RIVE
........................................................................................................................................................... 12-1
12.5.
F
OUR
Q
UADRANT
T
RACKING
T
EST
.......................................................................................................................................................... 12-1
12.6.
B
LOCKAGE
S
IMULATION
T
EST
.................................................................................................................................................................. 12-2
13.
MAINTENANCE AND TROUBLESHOOTING ........................................................................................................................... 13-1
13.1.
W
ARRANTY
I
NFORMATION
....................................................................................................................................................................... 13-1
13.2.
R
ECOMMENDED
P
REVENTIVE
M
AINTENANCE
....................................................................................................................................... 13-1
13.2.1.
Check ACU Parameters ....................................................................................................................................................... 13-1
13.2.2.
Latitude/Longitude Auto-Update check ..................................................................................................................... 13-1
13.2.3.
Heading Following ................................................................................................................................................................. 13-1
13.2.4.
Azimuth & Elevation Drive ................................................................................................................................................. 13-2
13.2.5.
Test Tracking ............................................................................................................................................................................ 13-2
13.2.6.
Visual Inspection - Radome & Pedestal ................................................................................................................... 13-2
13.2.7.
Mechanical Checks ................................................................................................................................................................ 13-2
13.2.8.
Check Balance .......................................................................................................................................................................... 13-2
13.2.9.
Observe Antenna Initialization ....................................................................................................................................... 13-2
13.3.
400MH
Z
M
ODEM
C
ONFIGURATION
..................................................................................................................................................... 13-3
13.4.
400
MH
Z
LED
INDICATORS
.................................................................................................................................................................... 13-4
13.5.
400
MH
Z
M
ODEM
S
IGNALS
.................................................................................................................................................................... 13-4
13.5.1.
Pedestal M&C ........................................................................................................................................................................... 13-4
13.5.2.
Radio M&C ................................................................................................................................................................................. 13-5
13.5.3.
Channel Identification ........................................................................................................................................................ 13-5
13.6.
T
ROUBLESHOOTING
400MH
Z
M
ODEM
C
OMMUNICATION
F
AULTS
............................................................................................... 13-6
13.6.1.
400MHz Modem Queries: .................................................................................................................................................. 13-6
13.6.2.
Modem Query Methods ..................................................................................................................................................... 13-6
13.6.3.
Isolating a 400 MHz Modem Fault Procedure: ...................................................................................................... 13-9
13.7.
T
ROUBLESHOOTING
................................................................................................................................................................................. 13-11
13.7.1.
Theory Of Stabilization Operation .............................................................................................................................. 13-11
13.7.2.
ST-21 Series Dual C-Band OR Quad Ku-Band TVRO RF Flow ..................................................................... 13-12
13.7.3.
Antenna Initialization (ST-21 Series) ......................................................................................................................... 13-12
13.7.4.
Antenna Loop Error Monitoring ................................................................................................................................... 13-13
13.7.5.
Reference Sensor Testing ................................................................................................................................................ 13-14
13.7.6.
Reference Sensor Monitoring ........................................................................................................................................ 13-15
13.7.7.
Open Loop Rate Sensor Monitoring ........................................................................................................................... 13-16
13.7.8.
Open Loop Motor Test ...................................................................................................................................................... 13-17
13.7.9.
To Disable/Enable DishScan® ....................................................................................................................................... 13-17
13.7.10.
Satellite Reference Mode ................................................................................................................................................. 13-17
13.7.11.
To Read/Decode an ACU Error Code 0008 (Pedestal Function Error): ................................................... 13-18
13.7.12.
Remote GPS LAT/LON Position: .................................................................................................................................... 13-21
13.8.
M
AINTENANCE
......................................................................................................................................................................................... 13-22
13.8.1.
Balancing the Antenna ...................................................................................................................................................... 13-22
13.8.2.
Remote Tilt: ............................................................................................................................................................................. 13-23
13.8.3.
To Reset/Reinitialize the Antenna: .............................................................................................................................. 13-24
13.9.
P
EDESTAL
C
ONTROL
U
NIT
C
ONFIGURATION
-
ST
XXX
-21
S
ERIES
............................................................................................... 13-25
13.9.1.
To configure the PCU; ........................................................................................................................................................ 13-25
13.9.2.
MODEL CONFIGURATION NUMBERS ...................................................................................................................... 13-25
13.10.
A
NTENNA
S
TOWING
P
ROCEDURE
......................................................................................................................................................... 13-26
Summary of Contents for ST88-21 C/Ku-Band TVRO
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