User's Manual
Table Of Contents
- Section 1 Introduction
- 1.1 Purpose of This Manual
- 1.2 General Description
- 1.3 General Specifications
- Section 2 Installation / Initial Turn-On
- 2.1 Introduction
- 2.2 Installation Checkboxes
- 2.3 Transmitter Cabinet Placement
- 2.4 Transmitter AC Connection
- 2.5 Signal and Ground Connections
- 2.6 Interlock Connections
- 2.7 3 Port Patch Panel
- 2.8 Motorized RF Switch Connections
- 2.9 Install PA and PS Modules
- 2.10 Initial Turn-On
- 2.11 Parallel Remote Control Connections
- 2.12 Remote Status Outputs, J15 & J16
- Section 3 Operation/ Adjustments
- 3.1 Introduction
- 3.2 Transmitter Control Panel
- 3.3 Graphical User Interface (GUI)
- 3.4 GUI Home Page
- 3.5 Drive Chain Main Menu
- 3.6 Power Amp Main Menu
- 3.7 Output Main Menu
- 3.8 Power Supply Main Menu
- 3.9 System Main Menu
- 3.10 GUI Menu Structures
- Section 4 Theory of Operation
- 4.1 Introduction
- 4.2 Block Diagram Descriptions
- 4.3 Transmitter Control System
- 4.4 Transmitter RF System
- 4.5 Power Supplies
- Section 5 Replacement Procedures
- 5.1 Introduction
- 5.2 PA Module Removal
- 5.3 PA Module Pallet Replacement
- 5.4 Power Supply Module Replacement
- 5.5 Circulator Removal/Replacement
- 5.6 Blower Assembly Removal
- Section 6 ISP (In-System Programming)
- 6.1 Introduction
- 6.2 Installing the ISP Program
- 6.3 ISP Procedures
- Section 7 Parts List
- 7.1 Parts List Index
10/19/07 888-2687-001 5-3
WARNING: Disconnect primary power prior to servicing.
Section 5 Replacement Procedures
Ranger ™ Mobile Series
5.3 PA Module Pallet Replacement
The phase and gain of the individual pallet amplifiers in the PA Module are tightly
controlled in manufacturing allowing field replacement of the individual pallets using a
“PA Pallet Replacement Kit”. The PA Modules are designed to cover a specific
frequency range or BAND within the UHF DTV spectrum. The PA Modules for each
band have a different part number and so do the Pallet Replacement Kits. See Table 5-1.
The tools required for the replacement include:
• Safety glasses
• Soldering iron
• Sn63Pb37 solder (Harris Part# 086-0004-054)
• Alcohol and a piece of cotton cloth
• Phillips screwdriver
• 7/64” size Allen wrench with torque indicating mechanism (15 inch pounds)
The Pallet replacement procedure is as described below:
!
WARNING:
THE DIAMOND PA MODULES ARE DESIGNED TO HANDLE VERY HIGH TEMPERA-
TURES AND MAY BE EXTREMELY HOT, UP TO 90
O
F (50
O
C) ABOVE ROOM TEM-
PERATURE. DO NOT TOUCH THE MODULES WITH BARE HANDS AFTER THE
TRANSMITTER HAS BEEN RUNNING, ESPECIALLY IN HIGH AMBIENT TEMPERA
-
TURE ENVIRONMENTS. SPECIAL GLOVES HAVE BEEN PROVIDED IN THE REAR
OF THE CONTROL CABINET OR CAN BE OBTAINED FROM HARRIS, PART #099-
0006-483 OR GRAINGER ITEM #4JF36.
STEP 1 Using the protective gloves, remove the PA module from the
Transmitter.
STEP 2 Place the module on the bench with the lid up.
Table 5-1 PA Pallet Replacement Kit Part Numbers
Replacement Kit Part # Channels (Frequency Band)
994-9782-002 42 - 58 (636 - 741MHz)
994-9782-003 59 - 78 (736 - 860MHz)
994-9782-004 14 - 26 (470 - 550MHz)
994-9782-005 27 - 41 (547 - 638MHz)