MTC-600 for Multiple Time Zone Clocks
OPTION 940009-01
This Master clock is designed to use the output circuits to correct Wired-Synchronous wall clocks for different Time
zones. These Time Zones may have different Daylight savings Time dates.
Programming of this MTC-600 is similar to a standard master clock. The differences are;
1. Holiday programming is not used.
2. The duration time is the difference between the master time and the time zone time. This may be set between
1 and 23 hours.
3. The On Time and Off Time are programmed as the DST dates for the Time Zone of each channel.
Programming is accomplished as follows:
1. The first step after installation is to do a bulk memory erase. This clears the memory and sets up information used
to calculate the DST dates.
STEP
1
2
3
4
5
6
PRESS
MODE
MODE
MODE
MODE
CANCEL
INDICATION
PROGRAM CONTROL
Duration
Begin, Month, Date
Erase
Erase
COMMENT
Enter Security Access Code
Display will display :88 then return to normal time
Return to normal operation
2. The next step is to program the number of hours to add to the master time for each time zone. The master clock
only adds time to adjust for time zones. Examples:
a. The Master is in New York. Circuit 1 is for London. In January neither New York or London are on DST. At
1:00 P.M. in New York, it is 6:00 P.M. in London or 5 hours ahead. 5 would be entered as the duration for
circuit 1.
b. The Master is in New York. Circuit 2 is for Houston. At 2:00 P.M. in New York it is 1:00 P.M. or 23 hours
ahead (technically 1 hour behind) in Houston. 23 would be entered for circuit 2.
STEP
1
2
3
4
5
6
PRESS
MODE
CIRCUIT
AHEAD/
BACK
ENTER
CANCEL
INDICATION
PROGRAM CONTROL
Duration
COMMENT
PROGRAM CONTROL
Select Circuit to be programmed
Set the number of hours for the Time Zone
The display will blank momentarily
Return to normal operation
You may program all 6 circuits by repeating steps 3 -5.
You may review the programmed hours by pressing the Review button during the above procedure. The Review LED
will light and the programmed hours will be displayed. During the Review procedure, a time may be canceled by
pressing the CANCEL button. To exit the Review mode, press the REVIEW button a second time. The Review LED
will extinguish.
P.O. Box 1108 - Owasso, OK 74055
www.midwest-time.com
MASTER TIME CLOCKS AND SYSTEMS
Phone: (918)272-9430 FAX: (918)272-9441
sales@midwest-time.com
TIME MEASURE AND CONTROL IS OUR BUSINESS
3.The next step is to program the DST dates for time zones for each channel. No entry or a cancelled date
indicates that the particular time zone does not use Daylight Saving Time. If a particular channel is to follow the
master for DST dates, then 1: 1 is entered for the beginning and ending dates.
a. London's dates are March 27, 1994 and October 23, 1994. The dates programmed would be 3:27 and 10:23.
b. Houston's dates are the same as New York. The dates programmed would be 1: 1 and 1: 1.
c. Tokyo does not use daylight saving time. The dates would be left blank or cancelled.
STEP
1
2
3
4
5
6
7
8
9
10
PRESS
MODE
MODE
CIRCUIT
AHEAD/
BACK
ENTER
SELECT
AHEAD/
BACK
ENTER
CANCEL
INDICATION
PROGRAM CONTROL
Duration
Begin, Month, Date
COMMENT
Enter Security Access Code
Select the circuit to be programmed
Set the Beginning month and date
The display will blank momentarily
End, Month, Date
Set the Ending month and date
The display will blank momentarily
Return to normal operation
You may program all 6 circuits by repeating steps 4 - 10 and using the SELECT and CIRCUIT buttons to
select the proper circuit and Beginning or Ending dates.
DSC-300-115
with
Time Zone
Option
940009-01
New York
Houston
Denver
Los Angeles
Tokyo
London
Zurich
Black
White
Red
MTC-600
115
VAC
SWP Out
115 Run
Common
Circuit 1
Circuit 2
Circuit 3
Circuit 4
Circuit 5
Circuit 6
Secondary Clocks May Be
DSC-400-115, DSC-300-115, or DSC-200-115
DSC-400-24, DSC-300-24, or DSC-200-24
DSC-406-115 or DSC-306-115
DSC-406-24 or DSC-306-24
ASC-10-xxx
ASC-12-xxx
MidWest Time Control, Inc.
P.O. Box 1108 - Owasso, OK 74055
www.midwest-time.com
Phone: (918)272-9430
FAX: (918)272-9441
sales@midwest-time.com