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Audio Precision ATS-1 User Manual
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Power
Cord
Connector
and
Line
Voltage
Selector
The
power
cord
connection
and
line
voltage
verification
is
described
on
page
2-1.
The
fuse
information
and
changing
the
line
voltage
selection
is
covered
in
Appendix
A.
3
Operation
Generator
Output
and
Analyzer
Input
connectors
Operational
Overview
3-40
ATS-1 Dual
Domain
User's
Manual
74
76
Table of Contents
Table of Contents
4
Safety Information
8
Safety Symbols
9
Scope of this Manual
10
Description
10
Related Documentation
11
Introducing the ATS-1 Dual Domain
11
Filter Shapes
15
Identification of Features and Options
17
IMD Option
17
Connector Panel Options
17
Optional Filters
17
Options Label
18
Block Diagrams
19
Analog Section
19
Digital Section
21
Analog Generator Output Circuit
24
Analog Analyzer Input Circuit
26
Getting Started
28
Connecting Mains Supply Voltage
28
Rackmounting
29
Concepts and Terminology
29
Analog Vs. Digital
29
Balanced Vs. Unbalanced
30
Self Test
31
Operational Overview
36
Front Panel Controls and Connectors
36
FUNCTION Keys
36
FREQUENCY Controls
37
AMPLITUDE Controls
37
INPUT Keys
38
OUTPUT Keys
38
Dual Domain User's Manual
38
INSTRUMENT MODE Keys
39
RECALL/SAVE Key
39
Soft Keys
39
LCD Display
39
Dbr Zero Key
40
GPIB Status Indicators
40
CONTRAST Control
40
MONITOR Operation
40
POWER Switch
41
Setup Panel
45
Screen Saver
46
Controlling the Generators
47
Generators Overview
47
Generator Control Modes
48
Analog Generator Mode (A:GEN)
50
Digital Audio Generator Mode (D:GEN)
51
Digital Sample Rate Generator Mode (D:RATE)
52
Digital Jitter Generator Mode (D:JIT)
53
Analog Generator Loading
54
Digital Status Bits
55
Controlling the Analyzer
57
Analyzer Overview
57
Analog and Digital Modes
58
Input Selection Keys
59
FUNCTION Keys
60
Units
61
Analog Amplitude Units
62
Is It Dbm or Dbu
64
Analog Power Units
65
Time and Frequency Units
66
Phase Units
67
Digital Time Units
67
Digital Amplitude Units
68
Generator Output and Analyzer Input Connectors
69
Digital Inputs and Outputs
70
Reference Input
71
Monitor Outputs
73
GPIB Interface
74
Power Cord Connector and Line Voltage Selector
75
External Connections
76
Analog Inputs and Outputs
76
XLR Connector Panel
80
Unbalanced Connections with the XLR Connector Panel
81
Unbalanced Stereo Connections
83
BNC Connector Panel
84
Function Descriptions
87
Amplitude
87
Noise
89
Level
90
THD+N (Total Harmonic Distortion Plus Noise)
92
Understanding THD+N
96
Surprises and Pitfalls in THD+N Measurements
98
What Signal Is Dominant
98
Selecting Bandwidth
98
Changes with Frequency
102
Changes with Amplitude
103
THD+N at 100% (or 0 Db)
104
Isolating Sources of THD+N
105
Sinad
106
Phase
108
IMD
111
Ratio
113
W+F (Wow and Flutter)
115
W+F (Wow and Flutter)
116
XTALK (Crosstalk)
118
AC Mains (Power Line Monitor)
120
Gen Load
122
Jitter
124
Digital I/O
127
Data Check
130
Status Bits
133
Bargraphs
136
Sweeps
138
Starting the Sweep
141
Continuous Sweeps
141
External Sweeps
142
Printing
142
Saving and Recalling Setups
147
Printing Saved Data
149
Applications Notes
151
Frequency Response of Amplifiers, Mixing Consoles, Etc
151
Audio Transmission Link Testing
151
Analog Tape Recorder Alignment and Performance Verification
153
Record-Reproduce Mode
153
Compact Disc Players
155
Appendix A - Changing Mains Voltage Selection
157
Checking the Selected Line Voltage
157
Changing the Line Voltage Selection
158
Checking the Fuse Block Orientation
159
Changing the Fuse Block Orientation
160
Checking the Fuses
161
Appendix B - Rackmounting
163
Fixed Rack Mount
164
Slide Rack Mount
165
Appendix C - Performing Internal Changes
167
Opening the Case
167
Changing to Alternate Connector Panels
168
Swapping Speaker and Connector Panels
169
Option Filter Installation
172
Monitor Source Selection
173
Appendix D - Specifications
175
Index
189
4
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Audio Precision ATS-1 Specifications
General
Brand
Audio Precision
Model
ATS-1
Category
Test Equipment
Language
English
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