Abus SECVEST Installer Manual page 23

CC/CV battery charging method
The IU charging method, also known as CCCV for con-
stant current constant voltage, combines the constant
current charging method with the constant voltage charg-
ing method. In the first phase of charging, a constant cur-
rent that is limited by the charger is used for charging.
Compared to the standard constant voltage charging
method, this limits the otherwise high initial charging cur-
rent. When the battery's selected cut-off voltage is
reached, the system switches from current to voltage reg-
ulation and continues charging at a constant voltage dur-
ing the second charging phase, with the charging current
automatically decreasing as the level of the battery's
charge increases. As a criteria for terminating the charge,
it is possible to define a minimum charge current for lith-
ium-ion batteries.
Chip key/proximity keyfob
Electronic "key" for quick access to the building without
code entry.
CLIP
Calling Line Identification Presentation
Coding of wireless signals
Ensures secure transmission of signals without manipula-
tion or tampering between the alarm panel and its com-
ponents.
Contact ID, CID
Protocol for transmitting data to an ARC/ESCC.
DD243
British requirement for sequential alarm confirmation.
DHCP
The Dynamic Host Configuration Protocol (DHCP) is a
communications protocol in computer technology. It facili-
tates the assignment of the network configuration to cli-
ents through a server.
DHCP makes it possible to automatically integrate a
computer into an existing network without having to con-
figure it manually. The client usually only has to be set to
obtain the IP address automatically. When the computer
starts on the network, it is automatically assigned an IP
address, subnet mask, gateway and DNS server by the
DHCP server. Without DHCP some additional settings
are required depending on the network to which the com-
puter is connecting.
Display
Display field on the alarm panel for operating and config-
uring the panel.
DNS
The Domain Name System (DNS) is one of the most im-
portant services in many IP-based networks. Its main
task is to respond to name conversion requests.
The DNS works like a telephone directory enquiries cen-
tre. The user knows the domain (the "friendly" computer
name on the IP network), such as "example.org". The
user sends this domain as the query. The URL is then
converted by the DNS into the associated IP address (the
"connection number" on the IP network), e.g. an IPv4 ad-
dress in form 192.168.2.21 and directs it to the correct
computer.
Introduction
23