Q The CCTV equipment service requirement seems to be moving over to more computer-based diagnostics and service aids. What real benefit does this give the installer/service provider, and what special programs are needed?
AComputers are gradually becoming standard issue of equipment for engineers across the security industry. Engineers who work on access control and tagging systems have been using them daily for some time now, both for commissioning and service purposes. Outlay for a laptop PC may seem high when compared to standard tools, but the convenience and efficiency quickly proves it a valid expense.
A computer can prove invaluable when using CCTV equipment that is programmable via a serial port – most can provide a debug output via the port for troubleshooting purposes.
When programming this type of equipment, the entire set-up can be saved to a file for records purposes. In the event of a serious failure or a system reset, the programming information can be downloaded to the machine in a very short time. The other option is for the engineer to manually enter all commands, assuming that some sort of record was kept in the first place. I suspect that most engineers have been in this position with no product manual and no program record and spent long periods of time getting equipment back-up.
When caught on-site with no information, if you have a PC set up for Internet use you can connect to most manufacturers' websites and download a host of manuals or relevant technical information.
Some CCTV equipment also has the ability to provide remote diagnostics via either a modem, network or Internet and I can foresee more and more equipment appearing which may be programmed and diagnosed by network, and in particular over the Internet.
TCP/IP-based equipment is beginning to appear in increasing amounts in the access control/CCTV market and communications with this type of equipment are easy via local network or Internet using a simple addressing system. All remotely accessible equipment is useful for engineers, particularly when covering emergency call-outs, as remote access may at least save them a journey or allow them to estimate what spares will be needed. On the software side of things, not very much is required. If you have a Windows operating system there are already programs provided which are very useful.
PROGRAMMING PACKAGES
Terminal/HyperTerminal can be used to communicate with equipment via a local or remote serial connection. The only real problem with these packages is the fact that you can only use a direct serial connection at rates of up to 38,400 baud.
Telnet is a terminal-type application designed for TCP/IP addressable equipment. It allows remote or local terminal sessions via a network or even the Internet.
A DOS-based FTP program is also provided by Microsoft with Windows. This can be used for file transfers on TCP/IP-based equipment both locally and remotely via a network or the Internet. However, this is hard to use if you are not totally familiar with DOS commands.
Windows FTP programs are common and cheap to buy, typically around £25.
Other useful TCP/IP utilities are also included but they take us off the immediate subject.
The only other thing you really need is a good selection of serial leads, gender changers and D-type connectors for making custom leads.
Source
Security Installer
