Lehigh DTM-MA, Manual

Page: 10 / 46


low: a low level or pulse means the 'on' state. For daylight sensors, 0v means sensor is
reporting maximum light.
Input signal port:

All port names must be unique across the whole system.

gpi1 through gpi8: input signal is a general purpose input. If this input is used to trigger
Emergency, the signal type must be 'mntd' or 'mom2'.

occ1 through occ8: input signal is an occupancy sensor input. This signal type must be 'mntd'
or 'mom2'.

day1 through day8: input signal is a daylight sensor input (EM only). This signal type must be
'anlg'.

none: select this if the port is not used.
2.1.3 Tables for timeclocks
2.1.3.1 Location table
Location needs to be set so that the station can determine the sunrise and sunset times for timeclock
events. Location is expressed in latitude and longitude degrees (GPS coordinates). You only need
whole degrees, such as 40 North and 75 West. There are several ways to easily determine this:
•
On a smartphone, compass, weather or GPS apps may provide this information.
• In an internet browser, search for your city's GPS coordinates. For example, type “Allentown
PA GPS coordinates” into a Google search.
•
See Appendix 6.2 for a list of GPS coordinates by USA city.
2.1.3.2 Time table
The time zone is expressed as an offset from Coordinated Universal Time (UTC). For example, if you
are in the Eastern Time zone, your UTC time is -5 hours, regardless of whether or not you are in DST.
If you want the station to automatically adjust for Daylight Saving Time, enable DST on this screen.
When Daylight Saving Time is enabled, the station will automatically change the time – 1 hour ahead
at 2:00 AM on the second Sunday in March and 1 hour back at 2:00 AM on the first Sunday in
November.
2.1.3.3 Holidays table
At the start of every year, the station loads a new set of default holidays, as shown in Appendix 6.3.
These can be changed as needed, repeated yearly. There are 25 holidays that can be defined. Holidays
can be used to specify when a Timeclock event occurs.
6