Glossary - 7
PCMCIA.
Personal Computer Memory Card Interface Association. See
PC Card
.
Percent Decode.
The average probability that a single scan of a bar code would result in a successful decode. In a
well-designed bar code scanning system, that probability should approach near 100%.
PING.
(Packet Internet Groper) An Internet utility used to determine whether a particular IP address is online. It is used to
test and debug a network by sending out a packet and waiting for a response.
Print Contrast Signal (PCS).
Measurement of the contrast (brightness difference) between the bars and spaces of a
symbol. A minimum PCS value is needed for a bar code symbol to be scannable. PCS = (RL - RD) / RL, where RL is
the reflectance factor of the background and RD the reflectance factor of the dark bars.
Programming Mode.
The state in which a scanner is configured for parameter values. See
Scanning Mode
.
Q
Quiet Zone.
A clear space, containing no dark marks, which precedes the start character of a bar code symbol and follows
the stop character.
QWERTY.
A standard keyboard commonly used on North American and some European PC keyboards. “QWERTY” refers
to the arrangement of keys on the left side of the third row of keys.
R
RAM.
Random Access Memory. Data in RAM can be accessed in random order, and quickly written and read.
Reflectance.
Amount of light returned from an illuminated surface.
Resolution.
The narrowest element dimension which is distinguished by a particular reading device or printed with a
particular device or method.
RF.
Radio Frequency.
ROM.
Read-Only Memory. Data stored in ROM cannot be changed or removed.
Router.
A device that connects networks and supports the required protocols for packet filtering. Routers are typically used
to extend the range of cabling and to organize the topology of a network into subnets. See
Subnet
.
RS-232.
An Electronic Industries Association (EIA) standard that defines the connector, connector pins, and signals used to
transfer data serially from one device to another.
S
Scan Area.
Area intended to contain a symbol.
Summary of Contents for Symbol DS3408
Page 1: ...Symbol DS3408 Product Reference Guide ...
Page 2: ......
Page 3: ...Symbol DS3408 Product Reference Guide 72E 68456 08 Revision A April 2009 ...
Page 6: ...iv DS3408 Product Reference Guide ...
Page 16: ...xiv Symbol DS3408 Product Reference Guide ...
Page 20: ...xviii Symbol DS3408 Product Reference Guide ...
Page 48: ...3 8 Symbol DS3408 Product Reference Guide ...
Page 62: ...4 14 Symbol DS3408 Product Reference Guide ...
Page 68: ...5 6 Symbol DS3408 Product Reference Guide ...
Page 92: ...6 24 Symbol DS3408 Product Reference Guide ...
Page 138: ...8 22 Symbol DS3408 Product Reference Guide ...
Page 144: ...9 6 Symbol DS3408 Product Reference Guide ...
Page 166: ...11 14 Symbol DS3408 Product Reference Guide ...
Page 168: ...12 2 Symbol DS3408 Product Reference Guide ...
Page 254: ...13 86 Symbol DS3408 Product Reference Guide ...
Page 264: ...14 10 Symbol DS3408 Product Reference Guide ...
Page 290: ...15 26 Symbol DS3408 Product Reference Guide Numeric Keypad continued 7 8 9 Cancel ...
Page 336: ...15 72 Symbol DS3408 Product Reference Guide Send ALT Characters continued Send Alt Send Alt ...
Page 357: ...Advanced Data Formatting 15 93 Alphanumeric Keyboard Space Dash ...
Page 358: ...15 94 Symbol DS3408 Product Reference Guide Alphanumeric Keyboard continued ...
Page 359: ...Advanced Data Formatting 15 95 Alphanumeric Keyboard continued ...
Page 360: ...15 96 Symbol DS3408 Product Reference Guide Alphanumeric Keyboard continued _ Underscore ...
Page 362: ...15 98 Symbol DS3408 Product Reference Guide Alphanumeric Keyboard continued 6 7 8 9 A B C ...
Page 363: ...Advanced Data Formatting 15 99 Alphanumeric Keyboard continued D E F G H I J ...
Page 364: ...15 100Symbol DS3408 Product Reference Guide Alphanumeric Keyboard continued K L M N O P Q ...
Page 365: ...Advanced Data Formatting15 101 Alphanumeric Keyboard continued R S T U V W X ...
Page 367: ...Advanced Data Formatting15 103 Alphanumeric Keyboard continued d e f g h i j ...
Page 368: ...15 104Symbol DS3408 Product Reference Guide Alphanumeric Keyboard continued k l m n o p q ...
Page 369: ...Advanced Data Formatting15 105 Alphanumeric Keyboard continued r s t u v w x ...
Page 370: ...15 106Symbol DS3408 Product Reference Guide Alphanumeric Keyboard continued y z ...
Page 380: ...A 10 Symbol DS3408 Product Reference Guide ...
Page 388: ...B 8 Symbol DS3408 Product Reference Guide ...
Page 389: ...Appendix C Sample Bar Codes Code 39 UPC EAN UPC A 100 123ABC 0 12345 67890 5 ...
Page 391: ...Sample Bar Codes C 3 PDF417 Data Matrix Maxicode ...
Page 392: ...C 4 Symbol DS3408 Product Reference Guide QR Code US Postnet UK Postal ...
Page 396: ...D 4 Symbol DS3408 Product Reference Guide ...
Page 426: ......
Page 427: ......