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34
3.6.4
Power
There are two power inputs that can take a standard barrel connector with the output
diameter 5.5 mm and internal diameter 2.1 mm. The provided power supply can be
plugged in either of these two connectors. The other connector is used to link the power
supply to another 8743-CL Controller/Driver. See the Accessories Section 2.4 for
information on the Power supply link cable.
Use the power switch to turn the unit ON and check the LED status as described in Section
3.4.
3.6.5
Picomotor Interfaces
Each 8743-CL can drive up to 2 Picomotors, one motor at a time. Before connecting,
inspect the Picomotor cables, connectors and generally their integrity. The Picomotors will
receive high voltage pulses that can be dangerous if wires are exposed. Contact New
Focus if you see any problems.
The 8743-CL will support both Open-loop and Closed-Loop Picomotors. The modular
RJ-22 connectors on the 8743-CL provide the drive voltages to both types. Closed-Loop
Picomotors have an additional High-Density DB-15 connector that provides the required
feedback signals. The feedback signals typically include I/Q position, limit sense, index
position, and / or home position information, depending upon the type of Closed-Loop
Picomotor.
Do not connect anything else to the 8743-CL outputs. The Controller/Driver is designed to
handle only New Focus standard Picomotors. If the output is shortened or otherwise
misused, an internal component will open and the unit will have to be serviced.
3.7
Mounting the unit
8743-CL may be set on a table top.
While not required, the 8743-CL can be bolted to the table top in either horizontal or
vertical orientation.
Under conditions of extreme usage, the case temperature of the Model 8743-CL may
exceed the levels considered safe by various international safety conventions. If such use
is anticipated, the user must position, or block access to, the unit so that the unit cannot be
accidentally touched.
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