Axcera CHV400BTD, Technical Manual, Page: 3 / 87

Innovator CHV400BTD ATSC Transmitter Table of Contents
Technical Manual, Rev. 0 i January 7, 2010
Table of Contents
Introduction ......................................................................................................1
Manual Overview ............................................................................................1
Assembly Designators .....................................................................................1
Safety ...........................................................................................................1
Contact Information........................................................................................3
Return Material Procedure ...............................................................................3
Limited One Year Warranty for Axcera Products..................................................4
Unpacking and Installation ................................................................................ 11
Unpacking ................................................................................................... 11
Installation .................................................................................................. 11
Tray Slide Installation ................................................................................ 12
AC Input Connections ....................................................................................... 13
Input and Output Connections ........................................................................... 14
Initial On Site Turn On Procedure....................................................................... 17
Typical System Operating Parameters ................................................................ 18
Typical Problems, Indications and Causes in CHV200B Tray................................... 19
LCD Display and Front Panel LED Indicators ........................................................ 19
System Remote Connections ............................................................................. 21
LCD Front Panel Screens................................................................................... 22
Operation Screens ........................................................................................ 24
Set Up Screens ............................................................................................ 31
System Description .......................................................................................... 37
(Optional) Innovator CHVB Series Web Ethernet Interface .................................... 41
(Optional) Innovator CHVB Series SNMP Ethernet Interface................................... 47
Circuit Descriptions of Boards in the CHV200B System ......................................... 49
(A1) 8 VSB Demodulator Board (1308275) - Only used with BRD operation ......... 49
Overview.................................................................................................. 49
Microcontroller Functions............................................................................ 49
Jumper and DIP Switch Settings.................................................................. 49
(A2) Digital Modulator Board (1304883), Part of the Digital Modulator ................ 50
w/Power Conditioner (1309629) ..................................................................... 50
SMPTE-310 Input ...................................................................................... 50
Channel Coder .......................................................................................... 50
Analog Output Section ............................................................................... 50
Pilot Frequency Generation......................................................................... 50
Voltage Requirements................................................................................ 51
(A3) IF Pre-Corrector Board (1308796) ........................................................... 51
Pin-Diode Attenuator Circuit ........................................................................ 52
In Phase and Quadrature Corrector Circuits .................................................. 52
Frequency Response Corrector Circuit .......................................................... 53
ALC Circuit ............................................................................................... 53
Input Fault and Modulation Fault Circuitry .................................................... 54
±12 VDC, +6.8 VDC, and VREF needed to operate the Board ......................... 55
(A4) Frequency Agile Upconverter Board (1309695) ......................................... 55
(A5) ALC Board, Innovator CX Series (1308570) .............................................. 56
(A6) Amplifier Assembly (1313959) – Used in the CHV20B Tray ......................... 57
(A6-A1) VHF HB Pre-Driver Assembly (1313899) .......................................... 57
(A6-A2) 50 Watt Amplifier Pallet, Italmec (1313484) ..................................... 58
(A6) 200 Watt Driver Amplifier Assembly (1313912) – Used in the CHV200B ....... 58
(A6-A1) 50 Watt Amplifier Pallet, Italmec (1313484) ..................................... 58
(A6-A2) 500 Watt Amplifier Pallet, Italmec (1313581) ................................... 58
(A7) Output Metering Detector Board (1313747) .............................................. 58
(A8) Control Card, Innovator CX (1312543) ..................................................... 59