Barnett Engineering B1277-HSPA, Руководство по установке и эксплуатации

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GLOSSARY PAGE 38
Digital Input – an input type that, when asserted, generates an alarm
condition.
Dipole Antenna – an RF antenna with a simple structure. The dipole
antenna included with the Cv3 is intended for indoor use only and has
limited range.
Directory – a list of callout instructions that are executed sequentially
when an alarm occurs. Each directory line may specify a telephone
number to call, a radio transmission with paging tones, a mobile number to
send a text message to, or an email address to receive alarm
announcements.
DTMF – Dual Tone Multiple Frequency; a series of audible tones used for
remote command and control of equipment. a.k.a. touch-tone.
Group – a means of having the alarms created by some inputs respond
differently than the others. By default, Groups are not used and all alarms
are treated the same. If groups are created, inputs may be individually
assigned to the group where separate acknowledge and interrogate codes
are defined and the directories used have unique lists of callout
instructions.
GSM – Global System for Mobile Communications - a mobile telephony
standard used by carriers such as AT&T Mobility, T-Mobile, and Rogers
Wireless.
HSPA – High Speed Packet Access (HSPA), is a family of high-speed 3G
digital data services provided by cellular carriers worldwide that use the
GSM technology
Hysteresis – a dead zone around a low and high alarm setpoint that
requires the input to change sufficiently after creating an alarm before the
level is recognized as being normal again. The hysteresis value should be
set larger than the natural short term variations found on an analog input.
Interval Input – an input type that measures the amount of time the input
has been asserted. Each time the input is asserted, the count is reset to
zero. When the input is de-asserted, the measured value is maintained
until the next measurement begins.
Intrusion Input – an input type that provides a time delay and the ability
to enable (arm) and disable (disarm) an alarm using a DTMF code. An
alarm condition detected on this input remains until the disarm code is
received.