Barcode Label Printers
Glossary G
Browse through our glossary to find out definitions for bar coding and RFID terms.
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| Glossary Term | Definition |
| GAIN dBi | Antenna gain, expressed in decibels referenced to a theoretical isotropic radiator. |
| GAIN dBic | Antenna gain, expressed in decibels referenced to a theoretical isotropic radiator that is circularly polarized. |
| GATEKEEPER | Software that performs two important functions to maintain the robustness of the network: address translation and bandwidth management. Gatekeepers map LAN aliases to IP addresses and provide address lookups when needed. |
| GATEWAY | Optional element in an H.323 conference. Gateways bridge H.323 conferences to other networks, communications protocols, and multimedia formats. Gateways are not required if connections to other networks or non-H.323 compliant terminals are not needed. |
| GENERAL TRADE ITEMS | Items that are not specifically made for one customer. |
| GHz | International unit for measuring frequency is Hertz (Hz), which is equivalent to the older unit of cycles per second. One Gigahertz (GHz) is one billion Hertz. Microwave ovens typically operate at 2.45 GHz. |
| GSM | The Global System for Mobile Communications standard for worldwide wireless communications on wide area networks (WANs). |
| GLOSS | Characteristic of the surface which causes it to reflect light at a given angle. |
| GPRS | General Pack Radio Service. A technology for providing reasonably high bandwidth wireless networking. Sometimes referred to as 2.5 G. |
| GTAG | "Global Tag", is an international initiative jointly sponsored by the Uniform Code Council and EAN International to create an open standard for RFID use within retail and the supply chain. |
| GTIN | Global Trade Item number: A proposed 'replacement' of EAN13 and UPC numbers (since the latter is expected to run out of available numbers by 2007). A 14 digit item number is proposed, offering more marking flexibility than its predecessors. |
| GUARD BARS | Bars that are at both ends and center of a UPC and EAN symbol, that provide reference points for scanning. Guard bars are similar in function to start and stop characters. |