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D-8000 / Jan 2003
M E T E R B R I D G E
2) Press the MODE button until the hour digits blink. Depress the SET button
until the desired hour is displayed.
3) Press the MODE button until the minute digits blink. Depress the SET button
until the desired minute count is displayed.
4) Press the MODE button until the second digits blink. Depress and hold the
SET button; the seconds display will hold at "00". When the current time
catches up to the display, release the SET button. The clock will start
counting. Hit the MODE button once more to place the clock into working
mode.
Capacitor Backup
With the meterbridge open note the super capacitor at C20. This super
capacitor is self charging. Note that the super capacitor does NOT light up the
clock display; it powers the clock crystal to keep it from losing count (it will
do this for about one hour).
Operational Modes
The standard factory default clock configuration is crystal-controlled, 12
hour mode, stand-alone operation. However, the clock will operate either
from the internal crystal controlled time base or from an ESE master (TC-89,
autodetect) signal. Because crystal time bases are subject to drift over time,
Wheatstone recommends operating the clock in the ESE slave mode for those
applications where the exact time is critical. Connect an ESE master at
connector CT6 (Pin 1 - Signal, Pin 2 - Shield).
The clock can also be synchronized to external 60Hz or 1Hz signals. To
synchronize to a 60Hz signal, connect the signal to CT3 pin 1, using CT3 pin
2 as the ground reference, and enable synchronization to 60Hz by turning SW7
position 3 on (SW7 position 2 should be off). To synchronize to a 1Hz signal,
connect the signal to CT4 pin 1, using CT4 pin 2 as the ground reference, and
enable synchronization to 1Hz by turning SW7 position 2 on (SW7 position
3 should be off).
Standard operation is 12 hour mode, but the clock can be switched to
24 hour mode by turning SW7 position 1 on.
For operation in areas with low ambient light, the display can be dimmed
by turning SW7 position 4 on.
D-8000 / Feb 2006
Summary of Contents for D-8000
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