Gasboy CFN Islander II - Manual (Page 21)

CFN Series System
2-10 03/07/03
CRT/PRINTER (OPTIONAL)
Description
The CRT terminal is used for communication to and from the Islander. A CRT/printer combination
can be used as a logger for providing hard-copy printouts of action at the site or as an
interrogation device to extract information from the system via the system’s commands. A CRT
can be directly connected to the Islander, connected via short haul modems, or connected via
telephone modems.
Location
The CRT/printer should be located in a clean, office-type environment. Do not install over a
hazardous location. CRT/printer combinations supplied by GASBOY have an operating
temperature range of 32
o F to 104 o F, 10% to 95% relative humidity, non-condensing. Locating the
CRT/printer in a dirty environment may cause premature failures.
MODEMS (OPTIONAL)
Description
There are two types of modems (internal and external) that can be used for communication to the
Islander where distance or conditions will not permit direct connection to the unit. When an
internal modem is installed, remote port communication is routed through the modem in place of
being wired at the terminal block in the post. See Section 3, Phone Modems for details. Modems
to be used for dial-out to a bank network require a dedicated phone line.
Location
When an external modem is used with the system, it is recommended the modem be located in an
office-type environment. However, if this is not possible, it should be housed in a protective
enclosure. Do not install over a hazardous location. External modems supplied by GASBOY have
an operating temperature range of 32
o F to 104 o F.
When ordered, the internal modem is mounted inside the Islander at the factory. Power for the
modem is supplied by the Islander.
POWER CONDITIONER (OPTIONAL)
Description
A Listed power conditioner should be used when there is an unstable source of power. Poor
power conditions are a key cause to system malfunction or failure. When used, the power
conditioner helps provide clean power to the Islander and other CFN devices. The power
conditioner provides transient and common mode protection for the CFN system, although it
cannot totally compensate for extremely poor power conditions.
Location
The power conditioner should be located near (within 50 feet of) the Islander, but not in or above a
hazardous area. It must be located in an area protected from direct contact with weather (typically
near the system circuit breakers). The unit is designed for an operating temperature range of 0
o F
to 104 o F.