Lightwave Communications LDX-3232 Manual do Utilizador descarregar pdf (Página 27)

OPERATION

Connecting to the Laser

04_06 LDX-3232 11

CHAPTER 2

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grounds in the circuit. Multiple earth grounds may provide circuit paths that induce

spurious currents in the photodiode feedback circuit and output leads.

Note: Cable connections to the laser must be secure! Loose connections can cause

momentary open circuits that can damage the laser.

Figures 2.1 - 2.4 show the possible configurations of connecting laser diodes and

photodiodes with the LDX-3232 High Compliance Laser Current Source.

Figure 2.1 Common Laser Cathode - Photodiode Cathode

Figure 2.2 Common Laser Cathode - Photodiode Anode

Figure 2.3 Common Laser Anode - Photodiode Cathode

+

-

+

Bias

LDX-3232 Current Source

OUTPUT

7

6

9

5

3

P. D. L. D.

Earth Ground

+

-

+

Bias

OUTPUT

7

6

9

5

3

P. D. L. D.

Earth Ground

LDX-3232 Current Source

+

-

+

Bias

OUTPUT

7

6

9

5

3

P. D. L. D.

Earth Ground

LDX-3232 Current Source

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