Many MW DXers have one or more JAGUAR setups "always on", monitoring the MW dial around the clock. JAGUAR is designed for continuous operation and, for example, YASLOG can collect data about MW conditions all the time. However, because every environment is vulnerable and uninterrupted operation is rare as there can be power cuts, Windows updates, hardware problem, JAGUAR crashes, an extra guardian angel called LIFESAVER is in place to put JAGUAR back on its feet when issues occur.
The tiny program called LIFESAVER.exe is included in JAGUAR's full-installation package. Do not start this program manually, just keep it in your JAGUAR folder if you want a 24/7 operation. LIFESAVER can recover from Perseus power breaks, hardware and I/O exceptions, program crashes and hang-ups even if they happen while recording. Therefore, no UPS is needed if you just run JAGUAR on a laptop. Create a shortcut to LIFESAVER.exe and move it to the Windows start-up folder if you want a secured 24/7 operation, including an automatic JAGUAR start-up after a Windows reboot.
Important: you must use a shortcut to LIFESAVER.exe, not the program itself!
LIFESAVER.exe and/or JAGUAR.exe write a row to an event log when issues are detected. You will find the log in the JAGUAR folder (as LIFESAVER.LOG). There is a special case when JAGUAR cannot continue processing without automated restart: for some reason, the bit stream from the Perseus hardware to the file buffer may be interrupted for a period of time, and JAGUAR hangs until restarted. You can simulate this case with JAGUAR.exe and PERSEUS.exe by unplugging the USB connection cable for a short while and then plugging it back and see what happens. In this case, LIFESAVER will wake up the Perseus connection to JAGUAR as soon as possible.
Make sure that you have placed the shortcut to LIFESAVER.exe into the Windows start-up folder.