
ClockOne Right side:
The Sensor 3.5mm jack accepts an optical sensor or contact
closure to ground. Low illumination or open contact condition
displays green digits.
High illumination (such as when a tally light is on) or a closed
input contact (such as from another clock or tally digit) causes the
display digits to turn red.
The ADJ dial adjusts the sensitivity of the light sensor.
Like the TallyOne, the Repeat 3.5mm jack provides a contact clo-
sure to ground when digit display is red. This output can be used
to drive the sensor input on another device such as a Digit Tally
or another clock, allowing daisy chaining of multiple devices from
a single optical sensor or contact closure source.
Time of day can be set by pushing the SET lever toward you. Once
the clock digit blinks, you can now change that digit by pushing
the lever in the opposite direction. Once your digit is set, pull the
lever toward you again to move to the next set of digits. Repeat
the process until your clock is set.
ClockOne Left side:
LTC (Longitudinal Time Code) input is a standard XLR3 female
that accepts a balanced or unbalanced signal between 50 mV
and 2 Vpp. Pin 1 is ground, a balanced signal is applied between
pins 2 and 3, and an unbalanced signal may be applied between
either pin 2 or pin 3 and ground.
The DC power input jack accepts a standard 2.1mm plug, with
center positive. Input power is nominally 12VDC at 1.2 amps
maximum.
ClockOne:
Note: If you are daisy chaining together a clock and a tally, the sensitivity of the light sensor is controlled by the unit that has
the sensor device connected to it. All secondary devices are slaves to the first device.