Arroyo Instruments LaserSource 4200 Series Manuel d'utilisateur télécharger pdf (Page 19)

4200 Series LaserSource User’s Manual · Page 19

Connecting to the LaserSource

A laser diode is very sensitive to electro-static discharge (ESD), over-voltage,

and over-current conditions. When connecting a laser to the LaserSource,

make sure proper ESD procedures are taken. In addition, it is critical that the

proper current limit and voltage limit be set for the laser diode. Exceeding the

laser diode’s rated current or voltage can damage or destroy the laser diode,

and the LaserSource’s hardware protection features can only protect the laser

diode if these limits are properly set.

The Laser anode and cathode outputs are electrically isolated from ground, as

are the photodiode inputs. In addition, the photodiode inputs are optically

isolated from the laser outputs, ensuring complete electrical isolation of the drive

circuit and photodiode measurement circuit.

Arroyo Instruments carries two cables specifically designed for this application.

Part number 1220 is a two meter cable designed for use with Arroyo

Instruments mounts, such as the 202 and 204 Butterfly LaserMounts, and has

DB-9 connectors on both ends, one male and one female. For custom

NOTE

While connecting to only one of the DB-9’s cathode

(pins 4 and 5) and anode (pins 8 and 9) connections is

required, you should connect cathode to both pins 4

and 5, and anode to both pins 8 and 9 to provide the

best connection through the DB-9 connector.

NOTE

Connections to the LaserSource and the laser diode

fixture must be secure. Tighten any screws on the DB-9

connectors, and make sure all connections are in good

condition. Poor or intermittent connections can damage

or destroy the laser diode.

CAUTION

The interlock connections must be kept isolated from all

other connections and from earth ground. Failure to do

so may damage the instrument.

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Arroyo Instruments LaserSource 4200 Series Manuel d'utilisateur Page 19