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5000/5100 Series Digital Analog Clocks Installation and Operation Manual
Chapter 2: ADC-5100 Series Analog Digital Clocks
Local offsets (hand position offsets) are still in effect while using the
auxiliary offset. The hand positioning local offsets are totally
transparent to the input timecode’s user bit offset.
If input timecode is removed while
USE OFFSET
is selected, the clock
will retain the time with the offset added, not the original time.
Timecode Generator Mode (Master Clock)
The ADC Series Clocks can also function as real time timecode
generators, essentially operating as master clocks. In this mode, the
clock will be accurate to 4 seconds per month. (The
MTG-3901, CSD-3901/3902, and CSD-5300 master clocks are
accurate to 1 second per year.)
To configure the ADC as a timecode generator, an internal connector
must be transposed so that the rear panel speaker-type connectors
become the timecode output terminals.
To do this, remove the 10 screws along the outside edge of the clock.
Carefully lift the rear panel from the chassis taking care not to disturb
the cables connected to the motor assembly. (If the cables become
disconnected, the time shown on the hands may become offset from the
real time, in which case, see
“Clock Setting” on page 26
.)
Follow the two wires from the speaker-type terminals to their connector
on the PC board. The connector, attached at point P1, must be removed
and reversed. Normally, the wires on the connector are located near the
corner of the board at pin 1. Reversing this will relocate the wires on the
connector to pin 10. When completed, return the rear panel chassis and
re-fasten the 10 screws.
After completing this process, the rear speaker-type connectors will
output real time timecode when DIP switch SW4 is set to the
INTERNAL
position.
To set the time, see
“Clock Setting”
.
Clock Setting
When shipped from the factory, the hands are set to 12:00. The clock’s
internal microprocessor has been re-set to memorize this hand position,
and the internal battery has been electronically disabled to preserve
battery life during storage and shipping.
