Two Technologies TechTerm TT1R2 Product manual

Document 15776(1.0.0.0)
TechTerm®
Technical Reference Manual

ii
TechTerm Technical Reference Manual
Document Number: 15776(1.0.0.0)
Date of Last Revision: November 19, 2008
Copyright © 1998 – 2008, Two Technologies, Inc.
All rights reserved.
Printed in the United States of America
Copyrights and Trademarks
The 2T logo and TechTerm are registered trademarks of Two Technologies, Inc.
Other products or company names mentioned herein may be the trademarks or registered trademarks
of their respective companies.
Reproduction Rights
This manual contains proprietary information. Permission to reproduce or otherwise use portions of the
material presented herein is explicitly given to Two Technologies OEMs incorporating the TechTerm
into their products. Please note that this publication contains material that may not be appropriate for
disclosure to some end users and that Two Technologies assumes no responsibility for technical
support burdens incurred, or any other consequences of OEM documentation decisions.
Changes and Addendum
Since Two Technologies is continuously improving the functionality and quality of its products, certain
information may not be included in this manual at its time of release. As a result, Two Technologies
may provide changed material as separate sheets included with this manual or separately in the form of
a change package, as it deems necessary.
Contact Information
Two Technologies, Inc.
419 Sargon Way
Horsham, PA 19044
Phone: [phone]
Fax: [phone]
Web: www.2T.com
To contact Two Technologies by e-mail:
•Sales: [email protected]
•Customer Service: [email protected]
•Technical Services: [email protected]
•Repair Services: [email protected]

Document 15776(1.0.0.0) iii
Warranty Information
Seller warrants that the product specified in this agreement are free of defects in materials and
workmanship, and shall conform to the latest specifications published prior to Buyer’s acceptance of the
agreement for a period of three years.
Product specifications as defined supersede previous specifications and are complete. Any parameter
that is not specifically defined in the specifications is expressly excluded from the warranty. This
warranty does not apply to any product which have been subject to misuse, accident, alteration, or if
the unit has been serviced by anyone other than an authorized representative of Seller.
Seller’s sole obligation to Buyer for products failing to meet specifications shall be, at Seller’s discretion,
to repair or replace the non-conforming device.
After receiving a Return Authorization (RA) number and a mailing address from Seller, a defective unit
covered under this warranty may be returned freight prepaid. Any replacement or repaired product
shall carry only the unexpired term of the warranty plus any the period required for repair.
If Buyer has been expressly designated as an Original Equipment Manufacturer (OEM) by Seller, the
warranty period shall commence upon the earlier date of (i) delivery to Buyer’s first customer, or (ii)
180 days from the original date of shipment by Seller. In the events that products for which: (a) Buyer
has title and, (b) have never been used, and (c) have been in the Buyer’s possession for more than 180
days and, (d) have an unaltered date code attached, may for an established fixed fee which will not
exceed ten percent (10%) of the original purchase price, have the date code updated by the Seller and
thereby reestablish those products with a new warranty.
THE FOREGOING WARRANTY AND REMEDIES ARE EXCLUSIVE AND ARE MADE EXPRESSLY
IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED, EITHER IN FACT OR BY
OPERATION OF LAW, STATUTORY OR OTHERWISE, INCLUDING WARRANTIES OR
MERCHANTABILITY AND FITNESS FOR USE. TWO TECHNOLOGIES NEITHER ASSUMES NOR
AUTHORIZES ANY OTHER PERSON TO ASSUME FOR IT ANY OTHER LIABILITY IN
CONNECTION WITH THE SALE, INSTALLATION OR USE OF ITS PRODUCTS AND TWO
TECHNOLOGIES MAKES NO WARRANTY WHATSOEVER FOR PRODUCTS NOT
MANUFACTURED BY TWO TECHNOLOGIES.
TWO TECHNOLOGIES SHALL NOT BE LIABLE FOR DAMAGES DUE TO DELAYS IN DELIVERIES
OR USE AND SHALL IN NO EVENT BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL
DAMAGES OF ANY KIND, WHETHER ARISING FROM CONTRACT, TORT OR NEGLIGENCE,
INCLUDING, BUT NOT LIMITED TO, LOSS OF PROFITS, LOSS OF GOODWILL, OVERHEAD OR
OTHER LIKE DAMAGES.
To maintain your warranty and to avoid creating hazards, only qualified personnel should perform
authorized modifications to Two Technologies’ products. Two Technologies cannot assume
responsibility for any condition affecting the proper operation of this equipment that may result from
unauthorized modifications.
Product Returns
If, after inspection, you note any product damage or discrepancies, please contact us promptly within
five days of receipt. If the exterior of the package shows obvious signs of damage, please contact your
carrier directly.
All items returned to Two Technologies require a Return Material Authorization number (RMA). Please
contact Two Technologies’ Service department to request an RMA number.

iv
Regulatory Notices
FCC Compliance
This equipment has been tested and found to comply with the limits for Class A digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference when the equipment is operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if not installed in accordance with the
instruction manual, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference, in which case the user will be
required to correct the interference at his or her own expense.
Canadian Compliance
This digital apparatus does not exceed the Class A limits for radio noise emissions from digital
apparatus set out in the Radio Interference Regulations of the Canadian Department of
Communications
Le présent appareil numérique n’émet pas de bruits radioélectrique dépassant les limites applicables
aux appareils numériques de la class A prescrites dans le Règlement sur le brouillage radioélectrique
édicté par le ministère des Communications du Canada.
Certifications
CENELEC
EMI Standards
•EN55022: 1998 (CISPR22, Class A) Information Technology
EMC Standards
•EN50082-1: 1997, General Immunity Part 1
Safety Standard
•EN60950: 2000 Safety of Information Technology Equipment
Warnings
Changes or modifications to this unit, which are not expressly approved by the party responsible for
regulatory compliance, could void the user's authority to operate the equipment.
Electrostatic Discharge (ESD)
Electrostatic discharge (static electricity) can have unpredictable
adverse effects on any electronic device. Although the design of the
TechTerm incorporates extensive ESD-related precautions, ESD can
still cause problems. It is good practice to discharge static by
touching a grounded metal object before inserting cards or
connecting devices.

Document 15776(1.0.0.0) v
Product Selection Guide
The TechTerm is an ASCII terminal for use with computers, properly equipped instruments and
industrial machinery.
Standard configuration includes a membrane keypad, twisted nematic liquid crystal display and
modular interface connection, but other configurations are available. A suffix applied to the model
number identifies the configuration as shown below:
TT1 Transient Voltage Suppressor
TVS
RTV Seal
RTV
Cable
Blank = Modular Connector
PW = Permanent Wire
DE9 = DE9 Permanent Wire
Case Color
BK = Black
GY = Gray
BU = Blue
YL = Yellow
Case Style
NSG = No Speaker Grill
Power Supply
1 = 5V
2 = 7.5 to 12V 1
H = 9.5V to 28V 2
Interface
R2 = RS-232
R4 = RS-422
RT = CMOS/TTL
Keypad Type
Blank = Membrane
EK = Elastomeric
KL = Backlit Keypad 3
# Keys
15, 20, 30, 32, 45
Display Type
Blank = Twisted Nematic
N = Supertwist
NL = Supertwist LED Backlit
NEL = Supertwist Backlit
VFD = Vacuum Fluorescent Display 3
TVFD = Ext. Temp. VFD 3
Type
Blank = Line-Powered
B = Battery
1. A linear regulator (7805A) with a minimum input of 7.5 V and a maximum voltage of 28.0 V that dissipates one watt
of power thereby limiting maximum permissible input voltage according to current draw of terminal.
2. A switching type voltage regulator with a minimum input of 9.5 V and a maximum voltage of 28.0 V. Since input
voltage is not dependent on the terminal’s current draw, it is suitable for all options.
3. Not available on battery units

vi
Power Requirements
Power Supply Options
Depending on the current draw requirements, the terminal may require the use of different power
supplies. Use the configuration number listed below (see previous page) to determine the correct power
supply:
•"-1"—requires connection to a 5-volt ± 5% regulated power source.
•"-2"—requires connection to a power source between 7.5 and 12 VDC that can source adequate
current. However, depending on a unit's total current draw, an input of up to 28 VDC may be
applied. See chart on next page.
•"-H"—requires connection to a power source between 9.5 and 28 VDC that can source
adequate current. However, input voltage is not dependent on a terminal’s current draw and
may be used with all terminal options.
Calculating Total Current Draw
The table below summarizes the current draw requirements for the TechTerm in various configurations
(measured at its interface connector). Values listed are approximate due to variations in individual
components—actual values may vary.
Current Draw for Basic Configuration
Configuration Description Draw
TT1R2 Base Unit with RS-232 35 mA
TT1R4 Base Unit with RS-422 33 mA*
Current Draw for Options
NL LED Supertwist Backlit Add 185 mA
NEL/TEL Supertwist Backlit/Extended Temperature Backlit Add 45 mA
VFD/TVFD Vacuum Fluorescent Display/Extended Temperature VFD Add 300 mA
KL Backlit Keypad Add 80 mA
Operational Current Requirements
Handshake Low Add 3 mA
Handshake Floating (not connected) Add 1 mA
*Worse case measurement, based on 4000 feet of cable, terminated with a 120-Ohm resistor.
To calculate the total current draw for your terminal configuration:
1. Read the model number on the back of your terminal.
2. Using the model number and the table above, add the current draw for each option to that of
the base unit.
Example 1—TT1NEL45R2:
RS-232 Option 35 mA
Supertwist Backlit Display 45 mA
Calculated Total Current 80 mA
RS-232 Option 35 mA
Vacuum Fluorescent Display 300 mA
Calculated Total Current 335 mA

Document 15776(1.0.0.0) vii
Determining the Maximum Input Voltage Allowed
The maximum input voltage allowed is based on a unit’s current draw.
To determine the maximum input voltage allowed based on current:
3. Calculate the maximum current draw using the table on the previous page.
4. On the following chart, locate the Calculated Total Current on the Calculated Operating
Current axis of the chart, and then move to the top of Operating Voltage range.
5. Look at the corresponding Maximum Input Voltage Allowed where the intersection occurs to
find the maximum useable voltage for your terminal configuration.
Restricted Input Voltage vs. Current Draw
7.5
8.5
9.5
10.5
11.5
12.5
13.5
14.5
15.5
16.5
17.5
18.5
19.5
20.5
21.5
22.5
23.5
24.5
25.5
26.5
27.5
4003703403102802502201901601301007040 Calculated Operating Current (mA)
Maximum Input Voltage Allowed
Using Example 1 and the chart above, the 80 mA drawn by the TT1NEL45R2 intersects with
17.5 volts. If the maximum supply voltage to the terminal is greater than 17.5 VDC, it requires
a -H power supply configuration.
Using Example 2 and the chart above, the 335 mA drawn by the TT1VFD45R2 intersects with
8.0 volts. If the maximum supply voltage to the terminal is greater than 8.0 VDC, it requires a -
H power supply configuration.
To clarify, if your system is supplying 12.0 VDC, the power is acceptable for the TT1NEL45R2
(Example 1), but not for the TT1VFD45R2 (Example 2). Applying 12.0 VDC to the
TT1VFD45R2 (Example 2) will damage it.
Operating
Volta
g
e
Example 1
80 mA, 17.5 VDC
Example 2
335 mA, 8.0 VDC

viii
Contents
Chapter 1. OVERVIEW...................................................................................................................... 1
About this Manual ...................................................................................................................................1
Symbols and Conventions ..................................................................................................................1
About Two Technologies ........................................................................................................................2
About the TechTerm ................................................................................................................................2
TechTerm Features...............................................................................................................................2
Chapter 2. OPERATION .................................................................................................................... 5
Controls and Indicators...........................................................................................................................5
Cable and Power Connections................................................................................................................6
Internal Communication Devices ......................................................................................................6
Signal and Pin Assignments ...............................................................................................................6
Connecting the Terminal.....................................................................................................................8
Power .........................................................................................................................................................8
Line-Powered Units .............................................................................................................................8
Battery-Powered Units ........................................................................................................................9
Keypad Operation..................................................................................................................................11
Display Operation..................................................................................................................................11
Cursor Position...................................................................................................................................11
Operating Modes....................................................................................................................................12
Host Control............................................................................................................................................12
Chapter 3. MANUAL CONFIGURATION ............................................................................................. 13
Introduction ............................................................................................................................................13
Parameter Menu Settings ......................................................................................................................13
Baud Rate ............................................................................................................................................13
Data Bits...............................................................................................................................................13
Parity....................................................................................................................................................13
Display PE ...........................................................................................................................................14
Repeat ..................................................................................................................................................14
Echo......................................................................................................................................................14
Handshake ..........................................................................................................................................14
Self-Test ...............................................................................................................................................14
Power Saver ........................................................................................................................................15
Parameter Menu Summary...............................................................................................................15
Changing Parameter Settings ...............................................................................................................16
Loading Factory Default Settings.........................................................................................................17
Restricting Access...................................................................................................................................17
Chapter 4. KEY PROGRAMMING...................................................................................................... 19
Introduction ............................................................................................................................................19
Defining Function Keys.........................................................................................................................20
Chapter 5. HOST COMMANDS ........................................................................................................ 21
Introduction ............................................................................................................................................21
Escape Commands.................................................................................................................................21
Cursor Up............................................................................................................................................21
Cursor Down ......................................................................................................................................21
Cursor Right........................................................................................................................................22
Cursor Left ..........................................................................................................................................22

Document 15776(1.0.0.0) ix
Cursor Home & Clear Display ......................................................................................................... 22
Enable Underscore Cursor................................................................................................................ 22
Disable Underscore Cursor............................................................................................................... 22
Cursor Home ...................................................................................................................................... 22
Erase Display ...................................................................................................................................... 22
Erase Cursor to End of Display........................................................................................................ 22
Erase Cursor to End of Line.............................................................................................................. 22
Long Bell.............................................................................................................................................. 23
Erase Entire Line ................................................................................................................................ 23
Click ..................................................................................................................................................... 23
Alert ..................................................................................................................................................... 23
Enable Blinking Cursor ..................................................................................................................... 23
Disable Blinking Cursor .................................................................................................................... 23
Short Bell ............................................................................................................................................. 23
Enable Key Click ................................................................................................................................ 23
Disable Key Click ............................................................................................................................... 23
Cursor Position................................................................................................................................... 24
Return Terminal Identifier String .................................................................................................... 24
Escape Command Summary ............................................................................................................ 25
Control Code Commands ..................................................................................................................... 25
Chapter 6. TROUBLESHOOTING.........................................................................................................27
Appendix A. SPECIFICATIONS .......................................................................................................31
Appendix B. ASCII CHARACTER SET .............................................................................................34
Appendix C. KEYPAD HEX OUTPUT VALUES.....................................................................................174H37
73H INDEX ..............................................................................................................................................175H39

x
List of Figures
Figure 2-1: TechTerm Controls and Indicators ........................................................................................5
Figure 2-2: Modular Interface Connector..................................................................................................6
Figure 2-3: 1210 Series Modular Cable ......................................................................................................7
Figure 2-4: PCAT Modular Connector ......................................................................................................7
Figure 2-5: Cable Connections.................................................................................................................... 8
Figure 2-6: Battery Orientation.................................................................................................................10
Figure 2-7: Standard Keypads ..................................................................................................................11
Figure 3-1: Parity Error Symbol................................................................................................................14
Figure A-1: TechTerm Case Dimensions.................................................................................................33
List of Tables
Table 2-1: TechTerm Controls and Indicators ..........................................................................................5
Table 2-2: Interface Devices ........................................................................................................................6
Table 2-3: Modular Interface Connector Signal and Pin Assignments .................................................6
Table 3-1: Parameter Menu Summary.....................................................................................................15
Table 4-1: Function Key Values................................................................................................................19
Table 5-1: Host Command Summary ......................................................................................................25
Table 5-2: Control Codes ...........................................................................................................................25
Table B-1: ASCII Character Set and Conversion Codes ........................................................................35
Table C-1: 45-Key Keypad Hex Output Values......................................................................................193H37
92HTable C-2: 30-Key Keypad Hex Output Values......................................................................................194H38
93HTable C-3: 20-Key Keypad Hex Output Values......................................................................................195H38

TECHTERM TERMINALS
Document 15776(1.0.0.0) 1
CHAPTER 1
OVERVIEW
About this Manual
Intended for authorized developers with prior knowledge of hand held PC application
development, this manual describes the advanced features, operations and interface
capabilities of Two Technologies’ TechTerm terminals. It is not for use by end-users.
Unless otherwise stated, the operational characteristics described herein correspond to
factory default configurations and settings as shipped from Two Technologies with a
standard 45-key keypad.
Because TechTerm terminals are highly customizable products with several optional
configurations and special keypad layouts, this manual only describes standard features and
operation. For custom configurations and special options, consult the appropriate
supplemental manual or addendum.
It is beyond the scope of this manual to provide operating system tutorials or information
about commercial or customized TechTerm application programs and connected equipment.
This information should be available in the manuals that accompany those products.
Wherever used herein, the term “TechTerm” applies to all models (except as noted).
NOTICE
The information contained in this manual applies only to TechTerm terminals manufactured after
May 2001 (Serial Number HH184408 and above).
Because newer models contain additional functions not found on previous models, use of these
functions on older terminal may cause unexpected results.
Symbols and Conventions
Unless otherwise noted, this manual uses the following format conventions to distinguish
elements of text:
•New terms used in this manual initially appear in Italics, for example: host.
•Names of keys as shown on a keypad appear in bold type, for example: CTRL.
•Names of parameter values appear in uppercase letters, for example: ENABLE.
•Esc represents the ASCII escape character in Escape commands, for example: Esc [4n.
•A lowercase “h” appearing after a number denotes a hexadecimal value, for example: 1Bh.

Overview
2
About Two Technologies
Two Technologies has been producing rugged hand held and panel mount terminals and
computers for over fifteen years. By implementing state of the art design and manufacturing
techniques, we revolutionized hand held terminals and computers inside and out. Today, Two
Technologies offers over a dozen cost-effective solutions serving virtually every market.
About the TechTerm
Specifically designed for industrial applications, the TechTerm is a rugged and fully
functional ASCII terminal with selectable operating parameters and fifteen menu-
programmable function keys. Parameters and function key definitions are stored in non-
volatile memory.
Commands issued by the host device can directly control the TechTerm’s cursor movement,
cursor style and signal tones from the built-in speaker.
TechTerm Features
Two Technologies offers the TechTerm with the following features. You can find additional
information regarding specifications in Appendix A.
Power
The TechTerm is available as a line-powered or battery-powered unit. Line-powered units
use a 7.5-12 VDC linear regulator. A 5 VDC (±5%) transformer and optional 9.5-28 VDC
switching regulator are also available, depending on current draw.
Battery-powered TechTerms come equipped with a push-button power switch, low-battery
indicator and a rechargeable Nickel Metal Hydride (NiMH) battery. Operating time on a full
charge is up to 40 hours, depending on use. Battery-powered TechTerms can also operate on
six AA alkaline batteries
Display
TechTerms come with a standard 80-character monochrome liquid crystal display that
features the standard U. S. ASCII character set as dark characters on a light background.
A supertwist nematic display is available for applications that require a greater viewing
angle. For applications where ambient light is insufficient, backlit supertwist and LED
Backlight supertwist displays are available for line-powered units. Other display options for
line-powered units include a Vacuum Fluorescent Display (VFD) and an extended
temperature VFD.

TECHTERM TECHNICAL REFERENCE MANUAL
Document 15776(1.0.0.0) 3
Keypad
Securely framed and clamped into place, the keypad surface provides excellent splash
resistance and prevents curling or peeling of the keypad overlay. Keypad layouts include 45,
30, and 20 keys available with standard or custom graphics and 32 and 15 keys available with
custom graphics. Keypads can be made from your choice of elastomeric or membrane
material.
Switches and Indicators
You can program up to fifteen function keys (keyboard dependent) with single characters
and save in non-volatile memory.
Battery-powered TechTerms have an On/Off switch and a low battery indicator.
Interface Options
Interface options for the TechTerm include RS-232, RS-422 or CMOS/TTL protocols.
Communication (up to 9600 bps) with a host device is through a modular 6-pin connector.
Durability
Like all Two Technologies' products, the TechTerm is remarkably rugged. The case consists
of Cycolac ABS, one of the most durable, chemical-resistant materials available on the market
today.

TECHTERM TERMINALS
Document 15776(1.0.0.0)
5
CHAPTER 2
OPERATION
Controls and Indicators
Figure 2-1 describes the possible components and indicators found on the front of a
TechTerm as shown in Table 2-1.
Figure 2-1: TechTerm Controls and Indicators
+()<>
ABCDE
-!_[]
FGHIJ
/&:;?
KLMNO
*
@
PQ
=#
RS
^$
TU
%.
WX
ESCBACKSP
Z
SPACE
'
"
V
Y
ENTER
CTRL
SHIFT
BAT
LOW
Table 2-1: TechTerm Controls and Indicators
Item Control/Feature Description
1 Display 4 Rows of 20 (5 x 7 pixel) characters
2 Low Battery Indicator Battery-powered unit only
3 Power Switch Battery-powered unit only
4 Keypad 45-key keypad (standard)
5 Modular Interface Connector Supplies communication and power
1
5
2
4
3

Operation
6
Cable and Power Connections
Internal Communication Devices
The following table lists the internal interface devices used in the TechTerm.
Table 2-2: Interface Devices
Interface Manufacturer Device
RS-232 Linear Technology LT1281
RS-422 Linear Technology LTC490
Signal and Pin Assignments
Modular Interface Connector
Figure 2-2 depicts the standard six-pin modular interface connector found on the TechTerm.
Table 2-3 describes its signal and pin assignments.
Warning: Use the six-pin modular receptacle for compatible serial devices only. Despite its
physical similarity to modular telephone connectors, it is not compatible with
telephone lines or signals. Connecting the terminal to a telephone line will damage it
and void the warranty.
Figure 2-2: Modular Interface Connector
123456
Table 2-3: Modular Interface Connector Signal and Pin Assignments
Pin RS-232/CMOS/TTL RS-422
1 + Supply to terminal + Supply to terminal
2 Handshake-In to terminal + Data-In to terminal
3 Handshake-Out from terminal + Data-Out from terminal
4 Data-In to terminal - Data-In to terminal
5 Data-Out from terminal - Data-Out from terminal
6 Common Common
Viewed facing

TECHTERM TECHNICAL REFERENCE MANUAL
Document 15776(1.0.0.0) 7
Standard Accessory Cables
Standard modular cables (1210-7 and 1210-15) that mate with the terminal’s modular
interface connector and Two Technologies’ PCAT wired adapter are available as optional
accessories. These cables will reverse the signal output from the terminal (see illustration
below). Non-reversing modular cables (1210-7-NR and 1210-15-NR) are also available.
Figure 2-3: 1210 Series Modular Cable
Blue
Yellow
Green Red
Black
White
Yellow
Green
Blue
Red
Black
White
White)
Red)
Black)
Green)
Yellow)
Blue)
Blue)
Yellow)
Green)
Black)
Red)
White)
PCAT Wired Adapter
The PCAT modular connector enables connection to a host device as well as supplying a
connection for a power supply.
Figure 2-4: PCAT Modular Connector
6 Pin Modular Jack Female DE 9 Connector
Common 1
Data Out 2
Data In 3
Handshake Out 4
Handshake In 5
+5V Out 6
Pin 1
Pin6
Pin 9 Pin 5
Pin 1 Pin6
PowerSocket
Blue Pin 1 (Black) Handshake In
Yellow Pin 2 (Yellow) Data Out
Green Pin 3 (Green) Data In
Red Pin 4 (Black) Handshake In
Black Pin 5 (Blue) Common
White Pin 6 (Red) Handshake Out
Pin 7 (Jumper)
Pin 8 (Jumper)
Pin 9 RI
Note: Pin descriptions assume connection through a Two Technologies’ 1210 series modular
cable to the terminal’s modular connector.

Operation
8
Connecting the Terminal
To connect the terminal to a host device using Two Technologies parts:
1. Plug one end of a 1210 modular cable into the modular connector on the bottom of
the terminal. Plug the other end into the PCAT adaptor.
2. Plug the PCAT adapter into the host device.
Power
Line-Powered Units
To supply power to a line-powered TechTerm:
1. Plug one end of a 1210 modular cable into the modular connector on the bottom of
the terminal. Plug the other end into the PCAT adaptor.
Figure 2-5: Cable Connections
Bottom of Unit
Modular Cable
PCAT Adapte
r
Power Supply/
Battery Charger
2. Using a Two Technologies’ power supply (such as a Two Technologies 1226-1 linear
power supply for units with a -2 power supply configuration), plug the power
supply connector into the PCAT adapter and then plug the power supply into a 120
VAC 60 Hz power outlet.
3. The terminal should turn on and a blinking cursor should appear on the display. If
the terminal does not turn on, refer to the Troubleshooting section of this manual for
help.

TECHTERM TECHNICAL REFERENCE MANUAL
Document 15776(1.0.0.0) 9
Battery-Powered Units
Battery-powered TechTerms come equipped with a rechargeable Nickel Metal Hydride
(NiMH) battery that has exceptional charge life without the “charge memory” characteristic
of conventional nickel cadmium batteries. Partially discharged batteries or extended periods
with the charger left connected will not adversely affect battery life or performance.
Operating time on a full charge is up to 40 hours, depending on use. The time required for a
full charge depends on the initial state of the battery. With the terminal off, this time should
not exceed eight hours. Battery-powered TechTerms can also operate on six AA alkaline
batteries.
Battery-powered TechTerms also have a low battery indicator, which indicates that there is
approximately one hour of operating power remaining. A built-in power saver will turn off
battery-powered TechTerms after ten minutes of inactivity. Any key press or character
received by the TechTerm will reset the power-saver timer.
To turn on battery-powered units, press the On/Off switch. The terminal should turn on and
a blinking cursor should appear on the display. If the terminal does not turn on, refer to the
Troubleshooting section of this manual for help.
Charging the Unit
Because the internal battery charger senses several conditions, including temperature, you
should charge the unit away from any known or potential heat sources. Units exposed to
temperatures in excess of 90 degrees Fahrenheit during the charge cycle may experience
incomplete charging and reduced operating time per charge.
To recharge the Nickel Metal Hydride (NiMH) battery pack, plug the Two Technologies’
power supply/battery charger (Part # 13799) into the PCAT adapter and then plug the power
supply/battery charger into a 120 VAC 60 Hz power outlet.
Changing Batteries
To change batteries:
1. With the unit face down, pull the battery cover retaining clip up from its recessed
slot and turn the clip in a counter clockwise motion.
2. Lift the cover up and remove the batteries. If the unit contains a battery pack, use the
tab on the battery pack to lift up and then out.

Operation
10
3. Insert the new batteries or battery pack into the unit using the orientation shown in
Figure 2-6.
Figure 2-6: Battery Orientation
Batter
y
Compartmen
t
NiMH Battery Pack
Retaining
Clip
TOP
PLEASE RECYCLE
BOTTOM
CAUTION:
R ISK OF EXPL O SIO N I F BAT TER Y
IS R EPL AC ED BY AN IN C O RR EC T
TYPE. D ISPO SE O F U SED BAT T ER IES
AC CORDING TO THE INSTRUCTIONS.
Tab
4. Close the battery cover and turn the battery cover retaining clip clockwise to lock the
cover.