HandHeld Entertainment SV Series Manual do Utilizador Página 101
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Quick Check® SV Series User’s Guide 7 - 1
7
ISO Parameter Grade Thresholds
ISO parameter fail thresholds are set in the SV Series by commands requiring
numeric settings that correlate to the parameter calculations. Following are
descriptions of how the numeric calculations are divided into letter grades per the
ISO Bar Code Quality Specification.
Conversion of letter scan grade to numeric grade
A=4, B=3, C=2, D=1, F=0
Conversion of numeric symbol grade to letter symbol grade (used in aver-
aging)
3.5 < A < 4.0
2.5 <
B < 3.5
1.5 <
C < 2.5
0.5 <
D < 1.5
F < 0.5
R
min
A < .5 x R
max
F > .5 x R
max
Modulation
A > .70
B >
. 60
C >
.50
D >
.40
F < .40
Symbol Contrast
A > 70%
B >
55%
C >
40%
D >
20%
F < 20%
Decodability
A > .62
B >
.50
C >
.37
D >
.25
E < .25
Minimum. Edge Contrast
A > 15%
F < 15%
Defects
A < .15
B <
.20
C <
.25
D <
.30
F > .30
- User’s Guide 1
- Disclaimer 2
- Canadian Notice 3
- Statement of RoHS Compliance: 4
- Cautions 4
- Enclosure Description 5
- Table of Contents 7
- Chapter 5 - Scanner Setup 8
- Distance and Angle 10
- Quick Check SV Series 11
- ScanView Software 12
- Laser Beam 12
- Control Panel 13
- + 5 VDC Power Input 14
- Sync Inputs 14
- Edge Sync Mode 16
- Envelope Sync Mode 16
- Communication Sync Commands 17
- Output Ports 17
- System Displays 18
- Serial Port Connector 19
- Symbology Identifier Table 22
- System Requirements 25
- PC Communication Port Setup 26
- Select Graphs 27
- Toggle Display Updating 29
- Toggle Additional Results 29
- Download New Firmware 29
- Port Configuration 29
- Initialize the Com Port 29
- Zoom In 30
- Erase Current Session Data 30
- Reflectance Profile 30
- Transmit SV Commands 31
- Report an Analysis 31
- Session Mode 31
- Session Mode Notes 31
- Reflectance Profile Mode 32
- Bar Code Analysis Screen 32
- Bottom Panel 33
- Graph Display Area 34
- Right Panel 34
- Reflectance Profile Screen 35
- Scanner Setup 37
- Scanner Positioning 38
- Bar Code Travel Direction 39
- Good Reflectance Profile 42
- Picket Fence Direction 43
- Calibration 44
- SV Command Language 49
- A value of 00 clears (dis 52
- Diagnostic Commands – D 53
- Label Setup Commands – L 59
- Note: See 62
- (page 6-17) 62
- Table of Analysis Parameters 67
- Table of Action Parameters 69
- System Control Commands – S 72
- Checking SV Status with ~HT 73
- Mode 00 (~LV00) 78
- Mode 01 I/O operation 79
- Mode 01 LED Operation 79
- Mode 02 I/O operation 81
- Mode 02 LED Operation 82
- Mode 12 I/O operation 84
- Mode 12 LED Operation 85
- Mode 16 I/O operation 87
- Mode 16 LED Operation 88
- I/O operation 90
- LED Operation 91
- Mode 20 (~LV20) 100
- Reference Decode 102
- Technical Specifications 103
- ± .25 volt 104
- Operation Modes 105
- Parameters Analyzed 106
- Maintenance/Customer Support 109
- Product Service and Repair 110
- Limited Warranty 111
- Introduction 113
- Setting the Proper Scan Angle 114
- Calibration Hints 117
- Hand Held Products, Inc 120
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