Regency
®
Model 4724 Control Expander Installation Manual (P/N 150596-02, Rev. A)
Revised 8/98
39
TEST TIME:00:00
Enter (in military time) the time of day that you wish to send a Test Report to the central sta-
tion.
Example: “6:00 PM” is “18:00” in military time.
LINE FRQ:60
Enter the power line frequency used to keep system time (requires the Model 4181 Power Line
Interface). To disable POWER LINE SYNC, enter
0
.
NOTE
Standard power line frequencies are 60 Hz in the USA and 50 Hz in Europe.
TIME CALB.
This option is used to calibrate real time. It has been preprogrammed at the factory to be within
one minute per year.
Normally you do not need to adjust the clock. However, it is possible that conditions at an
installation could cause the clock to drift. If the clock is off by more than two seconds in one
week, use the RTCAL option of the built-in programmer (Menu 11) to adjust.
NOTE
RTCAL is not in the menu for the 5540 downloading software.
1.
To calibrate RTCAL, you must know how many seconds per day (or week) the clock
gains or loses. (If you know the seconds per week, divide by 7 to get the second per day.)
2.
Multiply the per day number of seconds that the clock gains or loses by 6.07 to get the
adjustment factor.
3.
If the clock is fast (gains time), subtract the adjustment factor from the current value of
RTCAL.
4.
If the clock is slow (loses time), add the adjustment factor to RTCAL.
5.
If the resulting number is less than zero, add 256 to get the new value for RTCAL.
If the resulting number is greater than 255, subtract 256 to get the new value for RTCAL.
CENTURY:00
Enter the century (
1 9
or
2 0
).
SERVICE ON: 00/00
On this date, the SERVICE message (System Message #8) will appear. The message is cleared
by entering and exiting a program mode (such as Set Time).
8.13 Key Options (Menu 12)
STATION:#1
Select the touchpad for which you wish to program options.
NOTE
Station 0 options are not used. Begin programming with Station 1.
LOCATION#1
Enter the location text for Touchpad 1. Touchpad locations are used to annunciate panic key
alarms. The procedure for entering text is explained in Section 7.5 of this manual.