HandHeld Entertainment SV Series How to Set Up Single Scan Operation, Checking SV Status with ~HT

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The major trade-off to the single scan feature is only one bar code at a time can be analyzed in the beam vs. up to 4 codes in picket fence mode in the standard system. The major disadvantage to this method in cases where only a single scan is used for evaluation of a bar code is there is a higher probability that the analyses may not be accurate because part of the scan could be at the upper or lower edges of one or more of the elements in the code. Therefore if most of the analyses are being calculated with a single scan, this type of operation is recommended for measuring print trends in high volume, high speed applications where some small percentage of analyses that randomly indicate an unusual low grade can be filtered out.

In the case the bar code is in the laser beam for more than a single scan, all the scans gathered are averaged in the symbol analysis just like standard SV operation.

The special single scan operation is enabled only in Ladder Orientation mode. Picket fence Orientation mode operation is not affected. The travel direction of the codes can be either picket fence or ladder. The reason for using ladder mode is it limits the number of codes that can be simultaneously analyzed in the beam to a single code.

How to Set Up Single Scan Operation

Three commands that set up the operation are ~SB1 and ~LS01 and ~Hnx (x can be 2, 3, 4, or 5). The SV must also be placed in "Ladder" mode and the code must be in the ladder zone to be scanned and analyzed.

~SB 1 (~SB0 is the normal setting) enables the system to let the initial scan of a code pass to the analysis algorithms rather than wait for one of the next two scans to be a duplicate before the code is allowed to be analyzed.

Note: The ~SB1 setting may not update the horizontal bar code position in the report transmission. Therefore if the horizontal position is needed during setup, set ~SB0 temporarily to see the position, then set ~SB 1 for 1 scan operation.

~LS01 allows the initial scan to be reported as a 1 scan average in case the code leaves the beam before a second scan is detected.

~Hnx is a command that programs the number of consecutive scans that do not detect a bar code that cause the code to exit the beam and be reported. The standard system operation is fixed at 5. ~Hnx can be programmed for 2, 3, 4, or 5 scans. A lower number will allow a higher duty cycle, but it may also be less stable if a code is static in the laser beam, therefore causing multiple reports.

Note: Especially when setting up with a static code in the beam, or operating in picket fence orientation, make sure the code passes through the programmed ladder zone.

Checking SV Status with ~HT

The normal way of checking system status is with the ~HT command. The newer commands ~SB and ~Hn are not displayed with the standard ~HT command. In order to display the additional commands, set command ~De1 to allow the alternate ~HT reply.

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Contents User’s Guide Disclaimer FCC Class B Compliance Statement Statement of Agency ComplianceCanadian Notice SV Series Use with UL-listed Equipment Statement of RoHS ComplianceLaser Beam Enclosure Description Laser SafetyPage Table of Contents Scanner Setup ISO Parameter Grade Thresholds Technical Specifications Chapter a SV Series Setup Hints Scanning Distance and Angle Introduction Quick Check SV SeriesScanView Software SV Series Model SpecificationsLaser Beam SV100Connector Reset ButtonControl Panel Sync Inputs + 5 VDC Power InputIsolated Sync Input Diagram Envelope Sync Mode Edge Sync ModeOutput Ports Communication Sync CommandsIndicator LEDs 1 Power/Sync LEDSystem Displays Calibration LEDSerial Port Specifications Serial Port ConnectorSerial Port Pin-out Serial Port Transmission FormatPos Chars Parameters + or indicating sign of avg. max. bar Symbology Identifier Table UPC-A Quick Check SV Series User’s Guide ScanView Software Installation ScanView Installation and SetupSystem Requirements PC Communication Port Setup Software Operation Warnings Setup MenuTitle Bar Screen Display Menu Bar Screen DisplayStatic Codes Mode Select SymbologiesMoving Codes Mode Ladder Mode and Picket Fence ModeSupport Menu Advanced MenuAbout Menu Item All Data Points, Last 64 Data Points Speed Button Bar Screen DisplayZoom Erase Current Session DataSession Mode Transmit SV CommandsSession Mode Notes Modes Of OperationAnalysis Screens Reflectance Profile ModeBar Code Analysis Screen Bottom Panel Bar Code Analysis ScreenGraph Display Area Bar Code Analysis Results for a Previous Bar CodeRight Panel Reflectance Profile Screen Color CodingReflectance Profile Screen Scanner Setup Scanner Positioning Bar Code Travel Direction SV Scanner/Verifier Setup ProcedureBar Code Travel Speed Considerations Quick Check SV Series User’s Guide Quick Check SV Series User’s Guide Good Reflectance Profile Bad Reflectance Profile Picket Fence DirectionSetting Ladder Mode Scanning Length Using ScanView Software Picket Fence Bar Code Positioning SpecificationsCalibration Ladder DirectionProcedure Adjusting Scanner Gain and Offset Desired Signal Amplitude and Placement Quick Check SV Series User’s Guide Data Match Commands B SV Command LanguageCheck for specific data ~BCa##bc…bbb……mmm……bbb…… etc. up to 32 characters max~ Brnbb .. + Define increment or decrement data check ExamplesDecrementing Examples Incrementing ExamplesDiagnostic Commands D Relationship Between ~BC and ~Br CommandsGet the Scan Rate Example return using ScanView Hardware Configuration Commands H~HB# ~HO# Operational Mode Example return using ScanView inputted ~HB5Display the verifier parameters ~HQ# Transmission ModeQuick Check SV Series User’s Guide ~Hdx01nnn Sets scanner gain or offset ~LA## Overall passing grade Label Setup Commands L~LD## Passing percent decode ~LE# ~LFxy Analyze special subsymbology parameters~LL ~LI# Include the specified symbology for a labelQuick Check SV Series User’s Guide ~LQ# Enable or Disable Port Activations by Partial Decodes ~LT# Sync Input Source ~LS## Set minimum number of scans for valid read~LX# Sync Type ~LV## Output Interface Mode~LZ## Set Number of Codes per Label i.e., per sync period ~OS# Set Transmission Data Format Output Mode Selection Commands O~PBpiiaaabbb Port barcode decision block parameters Output Port Setup Commands PIDs Analysis Low High Units Parameters Value PCS IDs Description Low Value High Value ~PPpiiaaa Port action parametersPort State PASS/FAIL Parameters Indicator Digit Value ~PR#### Port/LED reset stateIndicator System Control Commands SChecking SV Status with ~HT How to Set Up Single Scan OperationDisable Verification Execute the calibration procedureEnable Verification ~SK# Communication SyncOperation Description Set the number of scans for Software Commanded Read Mode~SN### Raster Check~Sh## Set the high target reflectance value for calibration Reset the System~Sl## Set the low target reflectance value for calibration Data Transmission Example ~Ssxy Command Example~Stx Program Command Indicator Header Mode 00 ~LV00~Stx Command Example ~St5 Output Interface Modes DescriptionsMode 01 I/O operation Mode 01 ~LV01Mode 01 LED Operation SV Commands Important to Mode Mode 02 I/O operation Mode 02 ~LV02~LV02 Mode 02 LED Operation~LQ0 Mode 12 ~LV12 Mode 03 ~LV03Mode 12 I/O operation ~LV12 Mode 12 LED Operation~LDxx Mode 16 I/O operation Mode 16 ~LV16~LV16 Mode 16 LED Operation~PP801xxx ~PB811xxxyyy Operation Mode 17 ~LV17LED Operation SV Commands Important for Mode~LV17 ~PB815xxx000 Mode 18 ~LV18 LED Operation ~LV18 ~PB806xxx000 Mode 19 ~LV19 ~LV19 ~LDxx Mode 20 ~LV20 ISO Parameter Grade Thresholds Reference Decode Qcolvsv Series Product Specifications Technical SpecificationsParameter Specification Scanning Performance-SV Series Model PowerScanner Options SyncSync Mode Moving Bar Codes SymbologiesOperation Modes OutputsParameters Analyzed Sync Mode Stationary Bar CodesNo Sync Free Scan Operation Quick Check SV Series User’s Guide Quick Check SV Series User’s Guide Maintenance Maintenance/Customer SupportCleaning Technical AssistanceOnline Technical Assistance For Further Information Product Service and RepairJapan MalaysiaOnline Product Service and Repair Assistance Limited WarrantyQuick Check SV Series User’s Guide Setting the Proper Scan Distance Session Mode Screen Showing the X Dimension Measurement Setting the Proper Scan AngleButton Example of Good Scan Profile Examples of Scan Profile Parameters Out of Range Calibration HintsQuick Check SV Series User’s Guide Page Hand Held Products, Inc
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