MC22LV SERIES
– MASTER CLOCKS
REV 3/17/15
APPLIED TECHNICAL SYSTEMS
PAGE 5
FRONT PANEL DESCRIPTION
ALPHANUMERIC DISPLAY - Used for displaying time, day, date, and output status, and for
displaying information during programming or reviewing stored programs. In the normal mode of
operation, the display will be in the TIME DISPLAY, showing the day, time, and which relays are
activated.
KEYBOARD - Many keys serve multiple functions. Those keys are clearly labeled with their
functions to the side and top of the key. They cannot be used incorrectly, as the display will
AUTO PROMPT the user as to which key to press.
AM ON KEY [1] - Used for setting the time to AM when in the TIME SET or PROGRAMMING
MODES and for entering the MANUAL CONTROL MODE.
PM KEY [2] - Used for setting the time to PM when in the TIME SET or PROGRAMMING
MODES.
TIME KEY [3] - Used for entering the TIME SET MODE.
ANNUAL KEY [A] - Used for entering the ANNUAL PROGRAMMING MODE and for stepping
through the stored ANNUAL PLAN for review. The ANNUAL PLAN contains the schedule for the
alternate BASIC PLANS in calendar schedule form.
BASIC KEY [B] - Used for entering the BASIC PLAN - PROGRAMMING MODE and for stepping
through the stored BASIC PLANS for review. The BASIC PLANS contain the daily timed events
instructions.
CLEAR KEY [C] - Used for clearing the ANNUAL PLAN and/or BASIC PLANS.
DATE KEY [D] - Used for entering the SET DATE MODE for entering date or reviewing the date.
EXIT KEY [#] - Used for exiting any of the SET TIME, SET DATE or PROGRAM MODES.
OFF KEY [0] - Used for setting the pulse to OFF when in the PULSE PROGRAMMING MODE.
ENTER KEY [*] - Used for entering all commands or for stepping through any SET TIME, SET
DATE or PROGRAM data entry.
DST KEY [7] - Used for entering the SET DAYLIGHT SAVINGS TIME PROGRAM MODE.
DAY KEY [4] - Used for setting the day in the SET DAY and PROGRAM MODES. Also used for
entering the SET DAY MODE.
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