Setting The Clock - ETC Express Quick Manual

Setting the clock

If you plan to run real time programs from your LPC, you must first set the
time and date configuration of its real time clock. If your real time program
references sunrise or sunset, you must also set the astronomic functions
of your real time clock (the astronomic clock). Latitude, longitude and time
zone values for cities located around the globe are given in the Time and
location appendix of the Express User Manual.
You can set the time and date configuration of the LPC's real time clock
in either of two ways, both of which require you to attach a video monitor
to the LPC. One way is to attach a Remote Focus Unit to the LPC. The
second way is to take advantage of the LPC autocontrols. You can also set
the astronomic clock when using an RFU, but not when using the LPC
autocontrols. Astronomic clock settings, however, are needed only if your
real time programs reference sunrise or sunset.
If you need to set the LPC astronomic clock, you can perform those
settings in either an Express console or in Expression Off-Line. They
become part of the system configuration components which can then be
read into the LPC from a showfile. See Reading a showfile, page 7, for
information about reading a showfile's system configuration components.
NOTE: Clock settings are retained in LPC memory even if the power is
temporarily removed. Once set, you should not need to reset the clock,
but you may need to revise the setup later if, for example, power is
removed for a long time or you need to set the astronomic clock.
Express LPC QuickGuide, v.3.1 11