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
7-4 Section 7: System Description
Moseley SL9003Q 602-12016 Revision G
7.6.1. Audio Encoder
COMPRESSED
LINEAR
FIFOs
COMPRESSED
LINEAR
FIFOs
24576
OSCs
33868.8
SPDIF
AES/EBU
R
L
AUDIO
MUX
TC
INPUT
Inter nal
TL
16
1024
1024 1536
32 384
XTAL
13107.2
PLL
DDSDDS X2
ENCODER
SOURCE
S81
CLOCK
MUX
16384
CLIP
GEN
CLIP LEDs
R6
R
L
I_M2
I_M5
I_M3
I_M4
M7,M8
M4,M5,M6
M1,M2,M3
1024 1536
ZEROES
R1,R2,M3
DATA
CLOCK
Analog Input Daughter card
FRAME
SYNC
LINEAR
TL
TC = TRUNK COMPRESSED
= TRUNK LINEAR
R3
MUX
DECODE
ADDRESS
MUX ADDRESS
A2-A9
TRUNK
TRUNK
MUX
MUX
Front Panel
COMPRESSED
MODEM
LINEAR
MODEM
RS-232
TRANSLATOR
ASYNC TO
SYNC
CONVERTER
L & R
DIGITAL
AUDIO
AUX ASYNC
DATA
D1-D5,D7,R5
A/D
GENERATOR
SINE
R
L
D/
A
Front
Panel
Bargraph
R6
LEVEL
XLATORS
RATE
CONVERTER
SAMPLE
S52
Figure 7-2 Audio Encoder Block Diagram
The Audio Encoder module directly receives and decodes the AES/EBU digital audio into a
digital stereo audio data stream. Optionally, the analog audio inputs can be used (located on
the Analog Input daughtercard), and these inputs are converted to 16 bit digital stereo data.
The SRC (sample rate converter) passes the digital audio data stream to a data multiplexer
while synchronizing/converting the incoming sample rate (30-50 kHz) to the internal sample rate
clock (32, 44.1, 48 kHz selectable). For example, data could be provided by a CD player at
44.1 kHz, while the internal sample rate to be transmitted across the link is at 32 kHz (the
default rate).
The digital audio is optionally compressed (using MPEG) in the Audio Encoder module to allow
for higher bandwidth efficiency (more audio channels per RF channel) at the expense of aural
masking compression disadvantages. However, some users may require the compression
algorithm for existing system compatibility.
Sine wave and “zeroes” test signal generators are available on the card (switch selectable) for
system testing. The stereo D/A converter transforms the signal back to analog for use in
monitoring the signal from the front panel. This conveniently allows for level monitoring of the
digital AES/EBU audio inputs on the bar graph.