User manual
Table Of Contents
- User Manual
- Starlink SL9003Q
- Digital Studio Transmitter Link
- WARRANTY
- SL9003Q Manual Dwg # 602-12016-01 R: G Revision Levels:
- Using This Manual - Overview
- Section 1 System Features and Specifications
- Section 2 Quick Start
- Section 3 Installation
- Section 4 Operation
- Section 5 Module Configuration
- Section 6 Customer Service
- Section 7 System Information
- Table of Contents
- List of Figures
- List of Tables
- 1 System Features and Specifications
- 2 Quick Start
- 3 Installation
- 4 Operation
- 7.1 Introduction
- 7.2 Front Panel Operation
- 4.3 Screen Menu Navigation and Structure
- 7.4 Screen Menu Summaries
- 4.4.1 Meter
- 4.4.2 System: Card View
- 4.4.3 System: Power Supply
- 4.4.4 System: Info
- 4.4.5 System: Basic Card Setup
- 4.4.6 Factory Calibration
- 4.4.7 SYSTEM: UNIT-WIDE PARAMS
- 4.4.8 System: Date/Time
- 4.4.9 System: Transfer
- 4.4.10 System: External I/O (NMS)
- 4.4.11 Alarms/Faults
- 4.4.12 Radio: Modem Status (QAM)
- 4.4.13 Radio TX Status
- 4.4.14 Radio RX Status
- 4.4.15 Radio TX Control
- 4.4.16 Radio RX Control
- 4.4.17 Radio Modem (QAM) Configure
- 4.4.18 Radio TX Configure
- 4.4.19 Radio RX Configure
- 4.4.20 Radio Modem/TX/RX Copy Function
- 4.5 Intelligent Multiplexer PC Interface Software
- 4.6 NMS/CPU PC Interface Software
- 5 Module Configuration
- 6 Customer Service
- 7 System Description
- 8 Appendices
- Appendix A: Path Evaluation Information
- Appendix B: Audio Considerations
- Appendix C: Glossary of Terms
- Appendix D: Microvolt – dBm – Watt Conversion (50 ohms)
- Appendix E: Spectral Emission Masks
- Appendix F: Redundant Backup with TP64 and TPT-2 Transfer Panels
- Appendix G: Optimizing Radio Performance For Hostile Environments
- Appendix H: FCC APPLICATIONS INFORMATION - FCC Form 601
- Starlink SL9003Q & Digital Composite - 950 MHz Band
Section 4: Operation 4-23
Moseley SL9003Q 602-12016 Revision G
SPCTR
NRML Spectrum Normal or Invert
FLTR
xx % Nyquist filter
INTRL
x Interleave Depth
4.4.12.2 QAM Demodulator Status - Receiver BER Screens
Function Settings Summary
BER Post
0.00E-00 Post-FEC (Forward Error Correction) Bit Error Rate since
last “ENTER” reset
BER Pre
0.00E-00 Pre-FEC (Forward Error Correction) Bit Error Rate since
last “ENTER” reset
# Bits
0.0000E+00 # of Bits counted since last “ENTER” reset
# Errors
0.0000E+00 # of Errors counted since last “ENTER” reset
Interpreting BER
BER (Bit-Error-Rate or Bit-Error-Ratio) is a useful measure of reception quality,
analogous to signal-to-noise ratio used in analog systems. It is the ratio of error bits
received to data bits transmitted. This is an averaged value calculated as the total
number of uncorrectable received errors (#Errors) divided by the total number of error-
free received bits (#Bits) from the time the counters were last reset by pressing
<ENTER>.
The "Post-BER" provides the error-ratio after error correction has been applied. This is
the operational error performance of the radio. An error displayed here is one that the
audience may see or hear. Perceptually a listener will not detect single error
occurrences at a post error rate of 1e-10, or about one error per hour. Typically a
properly aligned link should anticipate error free link performance ("Post-BER" of
0.00E+00) under normal conditions.
The "Pre-BER" provides the error-count before error correction has been applied. This
provides a secondary indication for trouble-shooting and alignment purposes. The
effects of various impairments normally repaired by error-correction will be seen here.
Note: “Pre-BER” may indicate a static (non-zero) error rate under normal operation,
depending QAM mode, especially in the higher QAM modes of operation such as 32
QAM and 64 QAM resulting from transmitter power amplifier IMD. This is normal.