Honeywell 20205 Manual

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Resetting the Standard Product Default Settings:
Current Application Work Group
If you aren’t sure what programming options are in your image scanner, or 
you’ve changed some options and want the standard product default settings 
restored, scan the 
Standard Product Default Settings: Current Application 
Group bar code below.
The Menu Commands starting on page 10-6 list the factory default settings for 
each of the commands (indicated by an asterisk (*) on the programming pages).
Note: Scanning this bar code also causes both the image scanner and the base 
to perform a reset and become unlinked.  Refer to Linking Image 
Scanner to Baseon page 1-5 for additional information.
Note: If your image scanner is in multiple image scanner mode and you scan 
either the current or all application group default bar code, you will hear 
up to 30 seconds of beeping while all image scanners are re-linked from 
the base and the settings are defaulted to * settings.  The default interface 
is keyboard wedge and the default image scanner mode is single image 
scanner locked link mode.
Resetting the Standard Product Default Settings: 
All Application Work Groups
The following bar code defaults all of the work groups to the factory settings.
The Menu Commands starting on page 10-6 list the standard product default 
settings for each of the commands (indicated by an asterisk (*) on the program-
ming pages).
Standard Product Default Settings: 
Current Application Group
 Standard Product Default Settings:
All Application Groups 
						

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Using the Image Scanner with Bluetooth Devices
The 3820/3820i image scanner may be used either with the 2020 base or with 
other Bluetooth devices.  Scanning the Non-Base Bluetooth Connection bar 
code below allows the image scanner to be used with other Bluetooth devices 
(e.g., PDA, PC - Bluetooth USB Adapter).  After you scan the bar code below, 
follow the instructions supplied with your Bluetooth device to locate the image 
scanner and connect to it.  If you go out of range with your image scanner, the 
image scanner automatically reconnects to the Bluetooth device.   If you want to 
relink to the 2020 base, refer to 
Override Locked Image Scanneron page 1-6 
or Resetting the Standard Product Default Settings: All Application Work 
Groupson page 1-11.
Note: The multiple work groups option is not available when you are using the 
imager with Bluetooth devices other than the 2020 base.
Changing Bluetooth PIN Code
Some devices require a PIN code as part of the Bluetooth security features.  
Your image scanner’s default PIN is 1234, which you may need to enter the first 
time you connect to your PDA or PC.  The PIN code must be between 1 and 16 
characters.  To change the PIN, scan the bar code below and then scan the 
appropriate numeric bar codes from the Programming Chart inside the back 
cover of this manual.  Scan Save to save your selection.
Note: Refer to Minimizing Bluetooth/ISM Band Network Activitybeginning on 
page B-1 for additional Bluetooth/ISM information.
Out-of-Range Alarm
Duration
If your image scanner is out range of the base, an alarm sounds from both your 
base and image scanner.  To activate the alarm options for the image scanner 
or the base and to set the alarm duration, scan the appropriate bar code below 
Non-Base BT Connection
Bluetooth PIN 
						

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and then set the time-out duration (from 0-3000 seconds) by scanning digits on 
the Programming Chart inside the back cover, then scanning Save.  Default = 0 
sec (no alarm).
Note: If you are out of range when you scan a bar code, you will receive an error 
beep even if you do not have the alarm set.  You receive the error beep 
since the data could not be communicated to the base or the host.
Alarm Sound Type
If you have set the out-of-range alarm enabled, you may change the alarm type 
for the image scanner or base by scanning the appropriate bar code below and 
then scanning a digit (0-7) bar code and the Save bar code on the Programming 
Chart inside the back cover of this manual.  
Default = 0.  Set the sound type to fit 
your application.
Data Accumulation Mode
Scan the bar codes below to turn data accumulation (batch) mode on and off.  If 
data accumulation mode is on, bar code data is stored when the image scanner 
is out of range of the base and transmitted once the image scanner is back in 
range.
Base Alarm Duration
Image Scanner Alarm 
Base Alarm Type
Image Scanner Alarm Type
Data Accumulation Mode On
* Data Accumulation Mode Off 
						

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Batch Mode Transmit Delay
Sometimes when accumulated scans are sent to the host system, the transmis-
sion of those scans is too fast for the application to process.  To program a 
transmit delay between accumulated scans, scan one of the following delays.
Note: In most cases, a short (250 ms (milliseconds) delay is ideal; however, 
longer delays may be programmed.  Contact Technical Support (page 
15-1) for additional information.
Beeper and LED Sequences and Their Meaning
The 3820/3820i contains LEDs on the top of the unit to indicate its power up, 
communication, and battery status.  Simply stated, red LED = error; green 
LED = success of any type.  The unit’s audible indicators have meaning as well: 
3 beeps = error; 2 beeps = menu change; 1 beep = all other successes.
The table below lists the indication and cause of the LED illumination and beeps 
for the 3820/3820i.
* Batch Mode Transmit Delay Off
(No Delay)
Batch Mode Transmit Delay Short
(250 ms)
Batch Mode Transmit Delay Medium
(500 ms)
Batch Mode Transmit Delay Long
(1000 ms) 
						

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3820/3820i LED Sequences and Their Meaning
2020 LED Sequences and Their Meaning
The base contains a red LED that indicates the status of the unit and verifies its 
communication with the host system and a green LED that indicates image 
scanner battery charge condition.LED Indication Beeper Indication Cause
Normal Operation
Red Flash None Battery low
Green Flash 1 beep Successful communi-
cation or linking
Red, blinking 3 beeps Failed communication
Menu Operation
Green Flash 2 beeps Successful menu 
change
Red, blinking 3 beeps Unsuccessful menu 
change 
						

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The tables below list the indication and cause of the LED illumination and beeps 
for the 2020.
Note: Charging only occurs with external power applied to the 2020 or 12 volt 
Host power.
Basic Operation of the Cordless System
Cordless Base
The cordless base provides the link between the cordless image scanner and 
the host system.  The base contains an interface assembly and an RF commu-
nication module.  The RF communication module performs the data exchange 
between the cordless image scanner and the interface assembly.  The control 
assembly coordinates the central interface activities including: transmitting/
receiving commands and data to/from the host system, performing software 
activities (parameter menuing, visual indicator support, power-on diagnostics), 
and data translation required for the host system.
The base also is the image scanner battery charger with the external 9VDC 
power source applied.  Once you place the image scanner into base, the base 
green LED responds according to the Charge Status Indicator table above.
The base can be powered by the Host (parasitic power mode).  If the base is in 
parasitic power mode without the 9VDC power source, the base will still func-
tion, but will not charge the battery.System Condition System Status Indicator (Red LED)
Power On/System Idle LED is on
Power On/Diagnostic Error Blink LED for long duration, pulsing indefinitely
Receiving Data (2020 only) Blink LED for short duration in multiple pulses.  
Occurs while transferring data to/from the RF 
module or the Host port.
Base requests status from 
its own Bluetooth radioBlink LED once (occurs approx. every 30 sec-
onds)
Charge Condition Charge Status Indicator (Green LED)
Image Scanner inserted 
into baseThree flashes
>80% charged On continuously
30% to 80% charged Slow flash, 1 second on, 1 second off

						

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RF (Radio Frequency) Module Operation
The cordless system uses a state-of-the-art two-way Bluetooth radio to transmit 
and receive data between the image scanner and the base.  Designed for point-
to-point and multipoint-to-single point applications, the radio operates using a 
license free ISM band, which sends relatively small data packets at a fast data 
rate over a radio signal with randomly changing frequencies, makes the cord-
less system highly responsive to a wide variety of data collection applications 
and resistant to noisy RF environments.  Bluetooth Class 2 power level provides 
range of 33 feet (10m) depending on the environment.
Cordless Image Scanner
The cordless image scanner enables fast and accurate bar code scanning using 
a non-contact linear image scanner. 
The image scanner is comprised of a linear image scanner, a decode/control 
assembly, and an RF communication module.  The scan engine performs the 
bar code image illumination and sensing.  The decode/control assembly coordi-
nates the central communication activities including: capturing and decoding 
the bar code image data, performing software activities (parameter menuing, 
visual indicator support, low battery indication), and data translation required for 
the host system.  The RF communication module performs the data exchange 
between the image scanner and the base.
System Conditions
The components of the cordless system interact in specific ways as you associ-
ate an image scanner to a base, as you move an image scanner out of range, 
bring an image scanner back in range, or swap image scanners between two 
cordless systems.  The following information explains the cordless system oper-
ating conditions.
Linking Process
Once an image scanner is placed into the base, the image scanner’s battery 
charge status is checked, and software automatically detects the image scan-
ner and links it to the base depending on the selected link mode.
Image Scanner Is Out of Range
The cordless image scanner is in communication with its base, even when it is 
not transmitting bar code data.  Whenever the image scanner can’t communi-
cate with the base for a few seconds, it is out of range.  If the image scanner is 
out of range and you scan a bar code, the image scanner issues a triple beep 
indicating no communication with the base.  In addition, your image scanner 
and base can sound an alarm if programmed to emit an alarm.  See Out-of-
Range Alarmon page 1-12.
Image Scanner Is Moved Back Into Range
The image scanner re-links if the image scanner or the base have been reset or 
out of range.  If the image scanner re-links, you will hear a single chirp when the 
re-linking process (uploading of the parameter table) is complete.  
						

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Out of Range and Back into Range with Data Accumulation Mode 
On
The image scanner may store a number of symbols (approximately 500 UPC 
symbols, others may vary) when out of range and then send them to the base 
when back in range.  You will not hear a communication error beep in this mode, 
but you will hear a short buzz when you pull the trigger if the radio communica-
tion is not working.  Once the radio connection is made, the image scanner pro-
duces a series of beeps while the data is being transferred to the base.
Communication Between the Cordless System and the Host
The cordless image scanner provides immediate feedback in the form of a 
“good read” indication (a green LED on the image scanner and an audible 
beep) after a bar code is scanned correctly and the base has acknowledged 
receiving the data.  This is possible since the cordless system provides two-way 
communication between the image scanner and the base.
When data is scanned, the data is sent to the host system via the base unit.  
Confirmation from the host system or the base indicates that the data sent was 
received by the host.  The cordless image scanner recognizes data acknowl-
edgement (ACK) from the base unit.  If it cannot be determined that the data 
has been properly sent to the base, the image scanner issues an error indica-
tion.  You must then check to see if the scanned data was received by the host 
system.
Connecting the Base When Powered by Host 
(Keyboard Wedge)
A base can be connected between the keyboard and PC as a “keyboard 
wedge,” plugged into the serial port, or connected to a portable data terminal in 
wand emulation or non decoded output mode.  The following is an example of a 
keyboard wedge connection:
1. Turn off power to the terminal/computer.
3) Base sends 
data to host
1) 
Good 
Read
2) 
ACK f
rom
 
base 
						

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2. Disconnect the keyboard cable from the back of the terminal/computer.
3. Connect the 
appropriate 
interface cable 
to the base and 
to the terminal/
computer and 
keyboard.  Make 
sure the cables 
are secured in 
the wireways in 
the bottom of 
the base and 
that the base 
sits flat on a 
horizontal 
surface.
4. Turn the terminal/computer power back on.
5. Program the base for the keyboard wedge interface.  See Keyboard Wedge 
Connectionon page 1-21.)
6. Verify the base operation by scanning a bar code from the Sample Symbols 
in the back of this manual.
Note: Without using the 9-volt external, power supply, the base only uses 
enough power from the host to operate the interface.  The image 
scanner’s battery is not charged when in this mode.  Using the 9-volt, 
external power supply allows the image scanner’s battery to be charged, 
and no power is drawn from the host. 
						

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Reading Techniques
The image scanner has a view finder that projects a bright red aiming beam that 
corresponds to its horizontal field of view.  The aiming line should be centered 
horizontally over the bar code; it will not read if the aiming line is in any other 
direction. 
 
The best focus point for reading most code densities is about 5 inches (12.7 
cm) from the unit.  To read single or multiple symbols (on a page or on an 
object), hold the image scanner at an appropriate distance from the target, pull 
the trigger, and center the aiming line on the symbol.
Resetting the Standard Product Defaults
If you aren’t sure what programming options are in your image scanner, or 
you’ve changed some options and want the factory settings restored, scan the 
Standard Product Default Settings bar code below.
The Menu Commands starting on page 10-6 lists the factory default settings for 
each of the commands (indicated by an asterisk (*) on the programming pages).
Note: Scanning this bar code also causes both the image scanner and the base 
to perform a reset and become unlinked.  Refer to Linking Image 
Scanner to Baseon page 1-5 for additional information.
Good Read
Bad ReadBad Read
Standard Product Default Settings