Table of Contents
Advertisement
OPTIMOD
Problems and Possible Causes ................................................. 5-2
RFI, Hum, Clicks, Or Buzzes .................................................................................. 5-2
Poor Peak Modulation Control .......................................................................... 5-2
Audible Distortion On-Air..................................................................................... 5-2
Audible Noise On-Air ........................................................................................... 5-3
Shrill, Harsh Sound ................................................................................................ 5-3
System Receiving 6200's Output Will Not Lock ................................................ 5-4
System Will Not Pass Line-Up Tones at 100% Modulation................................ 5-4
Tones at the Legally-Required Modulation Level ........................................ 5-4
General Dissatisfaction with Subjective Sound Quality.................................. 5-4
Excessively Loud Commercials (DTV applications)......................................... 5-4
Inconsistent Levels (DTV applications)............................................................. 5-5
Incorrect Lip Sync (DTV Applications)............................................................... 5-5
Troubleshooting IC Opamps..................................................... 5-5
Technical Support ...................................................................... 5-6
Factory Service........................................................................... 5-6
Shipping Instructions .................................................................. 5-7
Specifications ............................................................................. 6-2
Circuit Description ...................................................................... 6-6
Overview ............................................................................................................... 6-6
12.288MHz Oscillator and System Clocking ..................................................... 6-6
1
Microprocessor and Power Monitoring Circuit ................................... 6-8
2
RAM, ROM and EEPROM ........................................................................ 6-9
3
Data Latches, Tri-State Data Buffers and Address Decoders ........... 6-9
User Control Interface and LED Display Circuits .............................................. 6-9
1.
Remote and RS-232 Interfaces ............................................................ 6-10
2.
Switch Matrix and LED Indicators ........................................................ 6-10
3.
LED Meter Circuits.................................................................................. 6-10
I-5
Advertisement
Table of Contents
