Unitech MS839 User manual

Handheld Scanner
- MS839L -
User’s Manual
Version 1.1

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Table of Contents
Chapter 1
Overview..........................................................................................................1
Introducing the MS839 ............................................................................1
Chapter 2
Keyboard Interface...........................................................................................3
Installation ...............................................................................................3
Installation without keyboard or laptop computer.....................................4
Installed as an USB Interface..................................................................5
Operating Parameters.............................................................................5
Chapter 3
RS232 Serial Interface.....................................................................................7
Installation ...............................................................................................7
Operating Parameters.............................................................................8
Serial TTL................................................................................................9
Chapter 4
Terminal Interface ..........................................................................................11
Installation .............................................................................................11
Operating Parameters...........................................................................12
Chapter 5
Setup .............................................................................................................13
Barcode Menu Setup.............................................................................13

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Setup Procedures .........................................................................13
Barcode Length Setting.................................................................14
Code ID Setting.............................................................................15
Preamble (Prefix) and PostambIe (Suffix).....................................16
Quick Setup...........................................................................................17
Batch Setup...........................................................................................17
Scanner Configuration Manager Software.............................................19
Factory Default Setting..........................................................................20
Chapter 6
Pin Assignment..............................................................................................21
TTL, Wand Emulation............................................................................21
Keyboard Interface................................................................................21
RS232 Interface ....................................................................................22
Appendix A
Examples.......................................................................................................23
Quick Setup Sheet.................................................................................23
Function Codes .....................................................................................26
Function Codes for PC..................................................................26
Setup Menu...........................................................................................28
Device Selection and Default: Group 1.........................................28
Beeps and Delays Group 2...........................................................29
Keyboard Wedge Settings Group 3...............................................31
RS232 Settings Group 4...............................................................34
Scanner Port: Group 5..................................................................35
Define Code ID Group 5................................................................37

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Code 39 Group 6 ..........................................................................38
I 2 of 5 Group 6.............................................................................39
EAN 128 Group 6..........................................................................41
Code 128/Code 93/MSI Code Group 7.........................................42
Code 11/Codaber Group 7............................................................43
UPC/EAN Code Group 8...............................................................44
Supplement Code Group 8 ...........................................................46
Dump Setup Strings Group 9........................................................46
DataBar (RSS), Limited, Expanded Group 10...............................47
Full ASCII Chart.....................................................................................49
Barcode Chart .......................................................................................56
Appendix B
Worldwide Support.........................................................................................57

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1
Chapter 1
Overview
Introducing the MS839
As a keyboard scanner supports most of the popular PCs and IBM terminals.
As a RS232 serial scanner sends data by using RS232 communication protocol.
The communication speed (baud rate) ranges from 300 bps to 38400bps.
As a RS232 terminal interface, systems with ANSI ASCII communication
environment such as UNIX, XENIX are installed between a host computer and
a terminal and supports full duplex and block communication modes.
As a wand emulation scanner, the output of the scanner emulates a wand
scanner output. Two output formats are supported. Code 39 format and Native
Code 39 format, the scanner always outputs the same data contents but with
Code 39 what symbology. Native scanner the same contents and symbology
as the scanned label.
The scanner supports the following bar code symbologies:
Code 39 Standard and Full ASCII Codahar
UPC/EA.N with supplement codes UCC/EAN128
Interleaved 2 of 5 Code 32 (Italian pharmacy)
Standard 2 of 5 Code 93
MSI code Code 128
Plessey code China Postal Code
(Toshiba Code)

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3
Chapter 2
Keyboard Interface
As a keyboard Interface, the scanner is actually installed between a PC (or
terminal) and a keyboard. See Figure for reference. The scanner sends data to
the host device by emulating the keyboard input and acts like an extension of
the keyboard.
Installation
This scanner can be installed easily by following the installation guide
illustrated below. Before you start the installation, locate a "Y" type cable in the
package.
Installation procedures:
1) Plug the modular (RJ45) connector of the "Y" cable into the bottom of the
scanner until you hear a click sound.
Installed as a Keyboard Interface
2) Turn off your PC or terminal.
3) Unplug the keyboard from the PC or terminal.
4) Plug the keyboard into a connector of the Y cable that mates with it.
5) Plug the remaining connector of the "Y" cable into the keyboard port of
your PC or terminal.
6) Power up your PC or terminal you press the switch the beam should be
out from the scanner.

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7) If nothing happens at step 6, check all cable connections first and
make sure your PC or terminal has been powered. Contact
technical support if.
8) Unless the scanner has been prior installed for the PC/terminal, user may
have to select a proper device number from Group 1 of Appendix D.
9)
The Default setting of this scanner is IBM PC/AT and PS/2. If you like
to make sure that you have the right selection, you may scan the
following label.
Installation without keyboard or laptop computer
The scanner has the capability to answer the keyboard inquiry made
by PC to avoid " Keyboard Error " message when keyboard is not present.
This implementation is useful to the applications where keyboard
entry is not necessary. You may scan the following label to enable
this feature. (Some of the laptop computers may not work
properly with this feature. Please contact your local vendor for
further support.)

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Installed as an USB Interface
You can install the scanner with the USB interface cable to work with either PC
or iMac USB port. See Figure 1.1 for reference. Your operating system may
require the original setup CD to install the driver with initial setup.
Installed as an USB Interface
The factory default setting should work with either PC or iMac USB interface; you may
also scan the following label to make sure you get the right device setting.
Operating Parameters
There are some operating parameters that can be configured to work for
different applications.
Intercharacter Delay
Intercharacter delay is the time period that the scanner will wait before
transmitting the next character after the first character was sent. If data sent by
the scanner was incorrect or missing characters, a longer intercharacter
delay may solve the problem.
Interblock Delay
lnterblock delay is the minimum time interval between two adjacent scanning.
If the processing speed of your host device is slower than your scanning
speed, a longer interbIock delay may ensure the data integrity.

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Function Code
The scanner can emulate function and other special keys on the keyboard by
scanning some pre-defined labels. Appendix B includes those labels for
special keys on PC, Macintosh, and IBM terminals. As an option, you may also
print these labels by printing their corresponding Code 39 characters (in
brackets) to work with scanner.
Caps - Lock
This parameter tells the scanner the current Caps-Lock status of the keyboard
so that the character transmitted by the scanner is in correct case.
Auto Trace (For PC AT/XT only):
In Auto Trace mode, the scanner will keep track of the Caps-Lock status
automatically. For some PCs, the scanning performance may he
compromised because of the auto tracing. If the scanning performance is
poor (or can not scan), or the scanner cannot output the upper/lower case
characters correctly, try to select one of the next two choices instead of
auto tracing.
Lower Case:
When the keyboard is in the unshifted state (Cap Lock is not pressed),
select "Lower Case".
Upper Case:
When keyboard has the CapLock key on, select "Upper Case".
Alt Key Mode
"ALT Key Mode" is a choice in the language selection. Sending characters by
ALT key plus keys on the numeric keypad is a feature in MS-DOS. When
selecting "ALT Key Mode", the scanner sends out the native ASCII
combination codes to represent each character of the bar code scanned. If
your system accepts ALT key sending, you can enable this mode and ignore
selections of the "Upper/Lower Case" and "Language".
You may find these settings on the Appendix D page D2 and D3.

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Chapter 3
RS232 Serial Interface
Installation
To use the scanner as a RS232 serial interface, a RS232 interface cable and
a power adapter are required. See chapter 1 for cable pinout and
adapter specification. Figure 2 shows an installation diagram for your
reference.
Installation procedures:
1) Make sure the scanner's cable has the right connector and pinout for the
RS232 port of the host device. If the pinout is different from device,
swapping pins is necessary to achieve proper communication.
2) If the host device has power output at RS232 interface port, the scanner
can be powered by connecting that power line to pin 9 of the scanner
connector. If there is no power at RS232 port, adapter is needed Plug the
adapter into the DB type connector at the end of the interface cable.
Installed as a Serial Interface
3) Plug the DB type connector the interface cable into host's RS232 port and
power up the device.
4) When the scanner is powered, a long beep sound indicates the scanner is
ready to use.

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Operating Parameters
Device Type
Baud Rate, Parity and Data Bit:
These parameters set the scanner's communication protocol that must be
matched by the host. The default setting for the serial interface is 9600 baud rate,
none parity, and 8 data bit.
Baud Rate can be 300, 600, 1200, 2400, 4800, 9600, 19200, or 38400
bps.
Parity can be even, odd, space, mark, or none.
Data Bit can be 7 or 8 long.
The scanner may not support settings with Data Bit as 7 and Parity as none
combination. Such combination is treated as 7 data bits with MARK parity.
Handshaking:
The scanner supports CTS/RTS handshaking as an option. The hardware
handshaking is supported on character-by-character basis.
During the communication, the scanner will stop sending data until the CTS is
valid within time specified by the Time Out parameter. During this time-out
waiting period:
If CTS is valid.
If CTS is not valid, the scanner sounds an error beep and discards the
current buffered data.
BCC Character:
BCC check character is calculated for entire data stream by using "Exclusive
OR" method. it is sent after data stream for data verification.
Time Out:
You can adjust the Time Out duration for handshaking and ACK/NAK protocol
to fit applications.

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Serial TTL
This scanner supports serial TTL interface, which follows the RS232
communication data format but with TTL voltage output ranged from OV to
5V.

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Chapter 4
Terminal Interface
Installation
To install the scanner as a terminal interface, you need a DB25 RS232 cable, a
terminal wedge "Y" cable and an AC adapter. See Figure 3 for reference.
Installed as a Terminal Wedge
Installation procedures:
1) Power off the terminal and unplug the communication cable at terminal
side.
2) Install the interface cable as shown in Figure 3. The "Y" cable provided in
Figure 3 is for terminals with female connector on communication port. If
there is a male connector on your terminal, you need a converter to
change that male to female and another converter to change the female
to male on host connector.
3) When the scanner is powered, a long beep sound indicates that the scanner
is ready to use.

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Operating Parameters
Parameters Baud Rate, Parity and Data Bit:
These parameters set the scanner's communication protocol which the same
setting by the host. The default setting for the terminal interface is 9600 baud
rate, none parity, and 8 data bit.
Baud Rate can be 300, 600, 1200, 2400, 4800, 9600, 19200, or 38400
bps.
Parity can be even, odd, space, mark, or none.
Data Bit can be 7 or 8 long.
The scanner may not support settings with Data Bit as 7 and Parity as none
combination. Such combination is treated as 7 data bits with MARK parity.
Data Direction:
This setting is only for the terminal wedge and corresponds to the terminal
communication mode. If the terminal has:
"Full Duplex" mode, set the data direction to "Send to Host".
"Half Duplex" mode, set to "Send to Host and Terminal".
"Block" mode, set to "send to Terminal".

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Chapter 5
Setup
The scanner interface can be configured to fit the user's specific application.
Configuration parameters are stored in a non-volatile memory, which is retained
even if power is lost.
Barcode Menu Setup
The setup menu in Appendix C contains eight groups:
Group 1: Device selection.
Group 2: Beep and delay.
Group 3: Keyboard and Wand Emulation.
Group 4: RS-232 Settings.
Group 5: Scanner port.
Group 6: Code 39,1 2 of 5, S 2 of 5 and Code 32.
Group 7: Code 128, Code 93, Code 11, Codabar, and MS.
Group 8: UPC/EAN
Group 9: Dump setup
Setup Procedures
For most parameters, proceed the following steps for the setting:
1) Locate a group that contains the parameter to be changed.
2) When you hear beep, the new setting will have been defined or updated
into the memory processor.
Default parameters are indicated in bold type and underlined characters. The
character font is BLACK.CD = Check Digit.
CDV = Check Digit Verification.

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Most settings require only a single bar code, but a few need several different bar
codes to be scanned in order to completely define a setting. They are:
Double Verification:
Step 1: Scan Double Verification from Group 5
Step 2: Scan one digit
Step 3: Scan Double Verification
Min Length / Max Length
Step 1: Scan MIN LENGTH or MAX LENGTH.
Step 2: Scan two digits from Appendix E.
Step 3: Scan MIN LENGTH or MAX LENGTH.
NOTES:
1. If you hear three times of beeps, please re-operate.
2. If you operate improperly, reset the scanner and re-scan.
Barcode Length Setting
The following example illustrates how to set Code 39 with a minimum length
of 5 and a maximum length of 20:
 Scan "Enter Group 7"
 Scan "Fl" to select Code 39
 Scan "MIN LENGTH" to enter minimum length setting
 Scan "0 " and "5" to select length 5. (Appendix E)
 Scan -MIN LENGTH" to end minimum length setting
 Scan "MAX LENGTH" to enter maximum length setting
 Scan "2" and "0" to select length 20. (Appendix E)
 Scan "MAX LENGTH" to end maximum Length Setting
 Scan "Exit" to end setup