Laser Diode Connections And Shielding - Newport 6000 Operation And Maintenance Manual

Chapter 4
Except for MOPA modules, pins 4 and 5 of the 9-pin D-connector are the negative
output, and pins 8 and 9 are the positive output current connections. These pins are
jumpered to provide greater contact area for the output connection.
We also recommend the use of the 9-pin D-connector for your interface rather than
binding posts, or loose wires. This will insure the best connection.
4.4.1

Laser Diode Connections and Shielding

Laser Diode Driver Module Operation
Whenever external connections are made to the output at
pins 4 and 5, and 8 and 9, these connector leads should be
jumpered to ensure the greatest laser diode safety.
Before connecting the laser diode to the module, be sure
that the LASER ENABLE is in the OFF position. Before
turning on the laser output, be sure that the current limit
and voltage compliance limit have been correctly set.
The cable connections to the laser must be secure to avoid
an open circuit, should they be jostled or bumped. Should
an open circuit occur during laser operations, the laser
output will normally be turned off automatically.
Except for MOPA modules, special circuits in the laser
module are present for detecting intermittent contacts and
connections. These circuits detect the abrupt change in
current that occurs when the output circuit is opened, and
the 6000 will generate an E-503 error.
Experience indicates that should an open circuit occur
during laser operation, the laser may be damaged.
Therefore, secure cabling is important.
NOTE
CAUTION
NOTE
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