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OMR Definitions
7-4 MS-9 Scanner User’s Manual
OMR Definitions
OMR. Symbology that is composed of a series of fields (or “placeholders”) of uniform
width that are either empty or contain a mark (a bar also of uniform width) in their cen
-
ters. A cell with a mark is equivalent to a binary 1, an empty cell is represented by a
binary 0. Typical OMR symbols contain from 8 to 32 fields.
Gate Bar. The first bar in the OMR symbol relates to the decoding direction.
Cell. (Sometimes referred to as a “field.”) The area in which a mark is present or
absent. The cell is wider than the mark.
Bar or Mark. A bar which can be present inside a cell.
Test Pattern. OMR symbol used to calibrate the scanner during initial setup.
The sketch above shows a 9 cell OMR symbol with 9 bars. The dashed outline of the
fields serves as a visual demonstration and is not visible when printed. The first cell
always contains a gate bar which serves to locate the symbol. The last cell can contain
a parity bar.
OMR Test Symbol
Bars (marks)
9 Cells (not visible)
Cell
width
Bar width
Gate bar
Bar height
- MS-9 Scanner 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
- Chapter 7 OMR 5
- Chapter 8 I/0 Parameters 5
- Chapter 9 Diagnostics 5
- Chapter 10 Laser Control 5
- Chapter 11 Terminal Mode 6
- Chapter 12 Utilities 6
- List of Figures 7
- List of Tables 8
- About the MS-9 Scanner 9
- About This Manual 10
- Host Communications 10
- Approvals 11
- Safety Labels 11
- Warning and Caution Summary 12
- Quick Start 13
- Step 1 — Hardware Required 14
- Step 2 — Connect the System 15
- Step 3 — Install ESP 16
- Step 4 — Select Scanner Model 17
- Step 5 — Autoconnect 18
- Chapter Quick Start 19
- Step 7 — Test for Read Rate 20
- By Serial Commands 21
- By Embedded Menu 21
- Configure the Scanner 22
- Using ESP 23
- Setup Mode 24
- Application Mode 25
- Pulldown Menus 26
- Chapter 2 Using ESP 27
- Making Changes in ESP 29
- Send/Receive Options 30
- Communications 31
- Communications by ESP 32
- RS-232/422 Host Port 33
- Host Protocol 34
- Point-to-Point with RTS/CTS 35
- Polling Mode D 35
- User Defined Point-to-Point 36
- Chapter 3 Communications 37
- Host RS-422 Status 38
- RS-232 Auxiliary Port 39
- Aux Port Mode 40
- Transparent Mode 41
- Half Duplex Mode 41
- Full Duplex Mode 43
- Daisy Chain ID 44
- Preamble 45
- Postamble 46
- LRC Status 47
- Response Timeout 48
- Intercharacter Delay 48
- Read Cycle 49
- Read Cycle by ESP 50
- Read Cycle by Serial Command 51
- Multisymbol 52
- Chapter 4 Read Cycle 53
- Trigger Mode 54
- Continuous Read 1 Output 55
- External Trigger Level 56
- External Trigger Edge 57
- Serial Data 58
- Serial Data or Edge 58
- Trigger Filter 59
- Duration 59
- External Trigger State 59
- Serial Trigger 60
- End of Read Cycle 61
- Timeout or New Trigger 62
- Read Cycle Timeout 63
- Good Decode Reads 64
- Scanner Setup 65
- Automatic Gain Control (AGC) 66
- Video Settings 67
- Laser Setup 68
- Symbologies 69
- Symbologies by ESP 70
- Symbologies by Serial Command 71
- Code 39 Status 72
- Check Digit Status (Code 39) 72
- Symbol Length (Code 39) 73
- Full ASCII Set (Code 39) 74
- Code 128 75
- Interleaved 2 of 5 76
- Chapter 5 Symbologies 77
- Codabar Status 78
- Symbol Length (Codabar) 79
- Check Digit Type (Codabar) 80
- UPC/EAN Status 81
- EAN Status 81
- Separator Status (UPC/EAN) 82
- Separator Character (UPC/EAN) 83
- RSS Expanded 84
- RSS Limited 85
- RSS-14 Status 86
- Narrow Margins 87
- Symbology Identifier 88
- Background Color 89
- Autodiscriminate 90
- Matchcode 91
- Matchcode by ESP Menu 92
- Matchcode by Serial Command 92
- Overview of Matchcode 93
- Using Master Symbols 93
- Matchcode Type 94
- Sequential Matching 95
- Match Start Position 95
- Match Length 96
- Wild Card 96
- Sequence On Noread 97
- Sequence On Mismatch 98
- New Master Pin 100
- (Optical Mark Recognition) 101
- Chapter Contents 101
- OMR Setup by ESP Menu 102
- OMR Setup by Serial Command 102
- OMR Description 103
- OMR Definitions 104
- Chapter 7 OMR 105
- OMR Setup 106
- Number of Fields 107
- Trigger Delay Type 108
- Number of Scans 108
- Gate Bar Location 109
- Trigger Delay 109
- Output Style 109
- Static Test 110
- Dynamic Calibration 111
- Calibration Data 112
- Auto Frame Status 113
- Average Bar Width 113
- Average Cell Width 113
- Leading Margin 113
- Scan Count 114
- Laser Control 115
- I/0 Parameters 117
- I/O Parameters by ESP 118
- Symbol Data Output 119
- When to Output Symbol Data 121
- Noread Message 122
- Beeper Status 123
- Partial Output 124
- Serial Verification 125
- Operation Command Output 126
- Output 1 Parameters 127
- Active State 128
- Pulse Width 128
- Output Mode 129
- Trend Analysis Mode 130
- Trigger Evaluation Period 131
- Number to Output On 131
- Decodes per Trigger 131
- Output 2 Parameters 132
- Output 3 Parameters 132
- Quality Output 133
- Diagnostics 135
- Diagnostics by ESP Menu 136
- Diagnostics by Serial Command 137
- Power-on 138
- Hours Since Reset 139
- Warning Messages 140
- Laser High 141
- Laser Low 142
- Chapter 9 Diagnostics 143
- High Temperature Threshold 144
- Low Temperature Threshold 145
- Lifetime Hours 146
- Laser Control by ESP Menu 148
- Laser On/Off 149
- Laser Framing 150
- Laser Off Time 151
- Laser On Time 152
- Terminal Mode 153
- Terminal Window 154
- Find Function 155
- Editing a Macro 156
- Terminal Window Functions 157
- Utilities 159
- Utilities by ESP Menu 160
- Utilities by Serial Command 161
- Read Rate 163
- Counters 165
- Counters by Serial Command 166
- Device Control 167
- Master Database 169
- Enter Master Symbol Data 170
- Chapter 12 Utilities 171
- Request Master Symbol Data 172
- Delete Master Symbol Data 173
- Firmware 174
- By Serial Command 175
- Autodiscrimination 177
- Scanner Status Requests 178
- Appendices 179
- General Specifications 180
- FIS Options 181
- LED Indicators 182
- Electrical Specifications 184
- Optoisolator Outputs 185
- Output Circuit Examples 185
- Optoisolator Inputs 187
- IB-131 Interface Module 188
- Scanner to IB-131 189
- Multidrop 190
- Daisy Chain 190
- Serial Configuration Commands 192
- Serial Utility Commands 194
- Serial Command Status Request 195
- Appendix F — ASCII Table 196
- Appendix G — Embedded Menus 198
- Defaulting 199
- Initialize 200
- Initializing 202
- Loss of Communications 202
- Appendix I — Test Decode Rate 203
- Scan line 205
- Figure A-11 Angled 206
- Picket Fence 206
- Appendix K — Operational Tips 208
- Configure the Scanner for 210
- Polling Sequence 212
- Select Sequence 213
- Multidrop Communications 214
- Glossary of Terms 216
- MS-9 Scanner User’s Manual 222
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