Multitech MT2834BL Specifications download pdf (Page 219)

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GLOSSARY

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Alarm Handler: The Alarm Handler is a component of the VRC

software. Whenever the VRC Site Manager receives an alarm,

the Alarm Handler will inform you of the alarm.

Capture: A capture is a snapshot of the current readings on a

VRC2500 unit. Information collected by a capture event includes

the current state of the link loss, command output activity, and

meter input readings. Captures are stored in the VRC unit until a

user connects to the unit and downloads them to the connected

PC, where they are stored in the VRC Database. A VRC unit will

handle 192 captures before discarding the oldest capture in order

to store the next one.

Command Relay Unit: The Command Relay Unit is a device that

provides isolation between the VRC's I/O unit's solid-state open

collector outputs and the site equipment that requires relay

switching for operation.

Database: The database is a storage device that keeps the data

for all the VRC2500 sites and units. If the user has multiple sites

and units, only one database is needed to receive all data. The

VRC database is compatible with Microsoft Access software.

Data Browser: Allows the user to sort, gather, and print the

captured data from the VRC2500 unit(s). The Data Browser

interfaces directly with the database to receive all of the shown

data. The database can be stored on the local PC or on a

network drive.

Dedicated Telephone Line: Also known as a leased-line. A

dedicated line is a telephone line that is leased from the

telephone company for reserved use. No dialing is required to

connect via a dedicated telephone line. When connected to a

VRC2500 system using a two or four-wire modem, a dedicated

line operates in the same manner as a direct serial connection.

DIP Switch: Miniature rocker switches used by many modems for

configuration purposes.

DTMF: Dual-tone multi-frequency (Touch-tone™) for dialing on a

telephone system.

Glossary

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Multitech MT2834BL Specifications Page 219