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Quadrus EZ Reader User’s Manual 6-7
Symbol Quality
Unused Error Correction
Definition:
The correction capacity of Reed-Solomon decoding is expressed in the
equation, e + 2d < d - p, where e is the number of erasures, t is the number
of errors, d is the number of error correction code words, and p is the
number of code words reserved for error detection.
The Unused ECC (Error Correction Code) parameter tests the extent to
which regional or spot damage in the symbol has eroded the reading safety
margin that error correction provides. (ISO/IEC 15415) Unused ECC grade
is defined in this way:
A (4.0) if UEC > .62 B (3.0) if UEC > .50
C (2.0) if UEC > .37D (1.0) if UEC > .25
F (0.0) if UEC < .25
If enabled, the unused ECC is appended to the symbol data according to
the ISO/IEC 15415 Symbol Quality Output Mode setting.
Serial Cmd: <K709,symbol contrast,print growth,axial non-uniformity,unused ecc>
Default: Disabled
Options: 0 = Disabled 1 = Enabled
- Quadrus EZ Reader 1
- User's Manual 1
- Disclaimer 2
- Latest Manual Version 2
- What Is Covered? 3
- What Is Excluded? 3
- Limitation of Liability 3
- Table of Contents 4
- Introduction 5
- Chapter 5 Symbologies 5
- Chapter 6 I/0 Parameters 5
- Chapter 7 Symbol Quality 5
- About the Quadrus EZ Reader 9
- Host Communications 9
- Highlighting 10
- Warning and Caution Summary 11
- Approvals 12
- 1 Quick Start 13
- AUX PORT 14
- Step 2 — Connect the System 15
- Parting Line 16
- Focal distance 16
- Step 4 — Install ESP 17
- Step 5 — Select Model 18
- TCP/IP (Ethernet) 19
- Locate by EZ Button 20
- Locate by ESP 21
- Step 8 — Calibrate Settings 22
- Testing by EZ Button 23
- Testing by ESP 23
- Testing by Serial Command 23
- Step 10 — Applications 24
- Video Output Option 26
- 2 Communications 27
- Communications by ESP 28
- RS-232/422 Host Port 30
- Data Bits, Host Port 31
- Host Port Protocol 32
- Point-to-Point with RTS/CTS 33
- Polling Mode D 33
- User Defined Point-to-Point 33
- User Defined Example 34
- From Host 34
- Multidrop 35
- User Defined Multidrop 35
- Host 422 Status 36
- RS-232 Auxiliary Port 37
- Auxiliary Port Mode 38
- Transparent Mode 39
- Half Duplex Mode 40
- Full Duplex Mode 41
- Daisy Chain Mode 42
- Command Processing Mode 43
- Daisy Chain ID Status 44
- Daisy Chain ID 44
- Daisy Chain Autoconfigure 45
- Daisy Chain Reader Number 46
- Daisy Chain Reader ID 46
- Gateway Address 48
- IP Address Mode 48
- Primary TCP Port 48
- Preamble 50
- Postamble 51
- Response Timeout 52
- LRC Status 53
- Aux Port System Data Status 54
- 3 Read Cycle 55
- Read Cycle by ESP 56
- Read Cycle Serial Commands 57
- Read Cycle Setup 58
- Multisymbol 59
- Multisymbol Separator 60
- Trigger Mode 61
- Continuous Read 1 Output 62
- External Trigger Level 63
- External Trigger Edge 64
- Serial Data 65
- Serial Data or External Edge 65
- Trigger Filter Duration 66
- External Trigger State 66
- Serial Trigger 67
- End of Read Cycle 69
- Read Cycle Timeout 70
- Active Camera 71
- Capture Mode 72
- Timed Capture 73
- For CCD: 74
- For CMOS: 74
- Triggered Capture 75
- Continuous Capture 76
- Capture Timing 77
- Time Between Captures 78
- Dual Camera Switching 79
- Rapid Capture Mode Examples 80
- Internal 81
- Switching by Timeout 82
- Store Noread Image 84
- 4 Symbologies 85
- Symbologies by ESP 86
- Symbologies Serial Commands 87
- Check Digit Status (Code 39) 92
- Fixed Symbol Length (Code 39) 93
- Full ASCII Set (Code 39) 94
- Code 128 95
- Check Digit Output (BC412) 96
- Fixed Symbol Length (BC412) 97
- Interleaved 2 of 5 98
- EAN Status 101
- Separator Status (UPC/EAN) 102
- Separator Character (UPC/EAN) 103
- Supplementals Type (UPC/EAN) 103
- Pharmacode 104
- Direction (Pharmacode) 105
- Bar Width Status (Pharmacode) 105
- RSS Expanded 106
- RSS Limited 107
- Fixed Symbol Length (PDF417) 109
- Codeword Collection (PDF417) 110
- MicroPDF417 111
- Composite 112
- Narrow Margins 113
- Symbology ID 114
- Background Color 115
- 5 I/0 Parameters 117
- I/O Parameters by ESP 118
- I/O Parameters 119
- Symbol Data Output 120
- Good Read 121
- When to Output Symbol Data 122
- Noread Message 123
- Linear Symbologies: 124
- Bad/No Symbol Qualification 126
- Start/Stop Status 127
- 2D Symbology Qualification 128
- Disabled 130
- Bad/No Symbol Output 130
- Object Qualification 130
- Enable Both 130
- Orientation Value 133
- Read Duration Output 134
- Output Indicators 135
- Green Flash Mode 136
- Green Flash Duration 137
- LED Configuration Mode 138
- Serial Verification 139
- Control/Hex Output 140
- Video Output 141
- Live (Video Output) 142
- Trigger Image Mode 143
- Image Frame 143
- Image Output 144
- File Format (Image Output) 145
- JPEG Quality (Image Output) 145
- Image Captioning 146
- Synchronous Trigger 148
- Application Notes 149
- EZ Button 150
- Load IP Database (EZ Button) 151
- Save for Power-On (EZ Button) 151
- EZ Button Modes 151
- EZ Button Operation 153
- Active State (Input) 154
- Output 1 Parameters 155
- Trend Analysis 156
- Symbol Quality 156
- Diagnostic Warning 156
- In Read Cycle 156
- Output State (Output 1) 157
- Pulse Width (Output 1) 157
- Output Mode (Output 1) 157
- Trend Analysis (Output 1) 158
- Trend Analysis Mode 159
- Output on Symbol Contrast 161
- Output on Print Growth 161
- Symbol Contrast Threshold 162
- Print Growth Threshold 163
- Unused ECC Threshold 163
- Output on Dot Center Offset 164
- Output on Cell Fill 164
- Output on Dot Ovality 165
- Output on Angle of Distortion 165
- Dot Center Offset 165
- Cell Fill 166
- Dot Ovality Threshold 166
- Angle of Distortion Threshold 166
- Diagnostics 167
- Output 2 Parameters 168
- Output 3 Parameters 170
- 6 Symbol Quality 173
- Symbol Quality by ESP 174
- Overview of Symbol Quality 175
- Total Read Time 176
- Symbol Quality Separator 176
- Data Matrix 177
- Axial Non-Uniformity 178
- Print Growth 178
- Unused Error Correction 179
- Grading Symbol Quality 180
- Pixels per Element 181
- ECC Level 181
- Matrix Size 181
- Quiet Zone 181
- Inkjet/Direct Symbol Quality 182
- Dot Ovality 184
- Angle of Distortion 184
- Static Symbol Quality Outputs 185
- 7 Matchcode 187
- Matchcode by ESP 188
- Matchcode Serial Commands 188
- Overview of Matchcode 189
- Matchcode Type 190
- Sequential Matching 191
- Match Start Position 192
- Match Length 193
- Wild Card Character 194
- Sequence On Noread 195
- Sequence On Mismatch 196
- Sequence Step 197
- Match Replace 198
- Mismatch Replace 199
- New Master Pin 200
- 8 Diagnostics 201
- Diagnostics by ESP 202
- Diagnostics Serial Commands 202
- Counts (Read Only) 203
- External Camera Message 204
- Connect Message 205
- Over Temperature Message 206
- Service Message 207
- 9 Camera Setup 209
- Camera Setup by ESP 210
- Camera Setup Serial Commands 210
- Calibrate 211
- Capture and Decode 212
- Test (Video Capture) 212
- Evaluation 213
- Histogram 214
- Line Scan 215
- Region of Interest (ROI) 216
- Region of Interest by ESP 217
- Top (Row Pointer) 218
- Left (Column Pointer) 218
- Height (Row Depth) 219
- Width (Column Width) 219
- Dynamic Setup 220
- Calculator 221
- CCD Image Sensor 222
- CMOS Image Sensor 223
- Contrast (CMOS) 224
- Offset (CMOS) 224
- Illumination Source 225
- Thresholding 226
- Image Processing Settings 227
- Image Processing Timeout 228
- Hollow Mode 229
- Mirrored Image 230
- Other Camera Parameters 231
- IP Database 233
- IP Database by ESP 234
- IP Database Serial Commands 235
- Overview of IP Database 236
- Operation of IP Database 236
- Rapid Capture Mode 237
- Continuous Capture Mode 237
- IP Database Window 238
- CCD Image Sensor Database 240
- Threshold Value 241
- Processing Mode 241
- Narrow Margin Status 241
- Contrast 243
- Threshold Mode 243
- Request Database Settings 246
- Request All Database Settings 246
- Terminal 247
- Terminal Window 248
- Find Function 249
- Editing a Macro 250
- Terminal Window Menus 251
- Utilities 253
- Utilities Serial Commands 254
- Read Rate 255
- Counters 256
- Good Read/Match Counter Reset 257
- Mismatch Counter 257
- Mismatch Counter Reset 257
- Device Control 258
- Master Database 259
- Master Symbol Database Size 260
- Enter Master Symbol Data 261
- Request Master Symbol Data 262
- Request New Master Status 263
- Delete Master Symbol Data 263
- Firmware 264
- Firmware Verification 265
- Request Checksum 266
- Sensor Type 267
- Bar Code Configuration 268
- Defaulting/Saving/Resetting 269
- Customer Default Parameters 270
- Microscan Default Parameters 270
- Reader Status Requests 271
- Y-Modem Upload Image 272
- Calibration 272
- Image Library Request 272
- Autodiscrimination 272
- 13 Unique Item Identifiers 273
- Overview of IUID and UII 274
- UII Mode Features 276
- UII Mode by Serial Command 277
- Error Messaging 278
- Valid Formats 280
- Output Format 281
- Output Format Serial Commands 282
- Output Format Status 283
- Format Assign 284
- Format Extract 285
- Format Extract by ESP 286
- Format Insert 287
- Format Insert by ESP 288
- Output Filter Configuration 289
- Filter Number 290
- Symbology Type 290
- Length 291
- Wildcard 291
- Placeholder 291
- Database Index 292
- Ordered Output Filter 293
- Ethernet 295
- Step 1 —Setup 296
- Step 2 —Preliminary Steps 297
- Assigning a Network Address 298
- Step 4 —Ethernet Application 302
- Primary (Command) TCP Port 303
- Video TCP Port 303
- Image File Transfers 304
- Appendices 305
- General Specifications 306
- Electrical Specifications 308
- Host 25-pin Connector 308
- Optoisolator Outputs 309
- Isolated Reader 310
- Secondary Relay 310
- Optoisolator Inputs 311
- Appendix C — Quadrus EZ DPM 312
- Appendix D — Quadrus EZ FLEX 313
- IB-150 Kit 314
- IB-151 Ethernet/USB Interface 315
- Interface 316
- Serial Command Format 322
- Serial Command Status Request 323
- Appendix G — ASCII Table 324
- Data Matrix Symbology 326
- Pixels and Resolution 328
- Field of View and Lenses 330
- Single Capture 332
- Multiple Captures 333
- Appendix L — Object Detector 334
- Appendix M — Operational Tips 335
- Appendix N — Embedded Menus 336
- Ethernet 337
- Polling Sequence 338
- Select Sequence 339
- Multidrop Communications 340
- Multidrop Addresses 340
- Glossary of Terms 346
- Hyperlink Index 347
- Dot Ovality 6-12 351
- Offset (CMOS) 9-16 358
- Output on Dot Ovality 5-49 358
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