5000/5100 Series Digital Analog Clocks Installation and Operation Manual
11
Chapter 1: DAC-5000 Series Digital Analog Clocks
•
CCW
This button moves the selected hand counter-clockwise
one unit. When the time is set, press the
MANUAL SET
button (a
fourth time) and release it at the exact time that the clock is to be
set. The clock will now return to normal time keeping with the
second hand advancing one second after the
MANUAL SET
button
is released.
•
CW
Press this button to move the selected hand clockwise one
unit. When the time is set, press the
MANUAL SET
button (a
fourth time) and release it at the exact time that the clock is to be
set. The clock will now return to normal time keeping with the
second hand advancing one second after the
MANUAL SET
button is released.
Use Offset
The
USE OFFSET
function allows the addition of a user programmed
constant offset to the user bits of a standard timecode. Therefore, the
availability of a timecode generator capable of programming the user
bits of the timecode is essential.
This function is generally used when it is desired to simultaneously
provide GMT and local time with two clocks being fed the same
timecode.
The
USE OFFSET
function is selected by closing the control mode
switch SW4 of the rear panel. Six bits of data are used to specify the
offset. The six bits are divided into two three bit sections. The first three
bits follow the unit minutes at bits 36, 37 and 38 of the timecode. The
second three bits follow the unit hours data at bits 52, 53 and 54. The
minimum offset allowed is 30 minutes. This can be incremented in 30
minute periods until reaching 23 hours and 30 minutes which is the
maximum offset allowed.
