Agilent-technologies 83438A Manual de usuario descargar pdf (Pagina 25)

2-5

Making Measurements

Performing Stimulus-Response Measurements

To characterize a passive device

Turn on the optical spectrum analyzer and the Agilent 83438A, and allow them

to warm up for 1 hour.

Use a fiber optic cable to connect the Agilent 83438A’s output to the input of

the optical spectrum analyzer.

On the optical spectrum analyzer, press

INSTR PRESET

AUTO MEAS

and then

AUTO ALIGN

On the optical spectrum analyzer, use the

START

and

STOP

keys to set the proper

wavelength range.

Press

REF LEVEL

, and set the reference level to –10 dBm.

Press

SENS,

and set the sensitivity to –70 dBm. You can increase the sensitivity

beyond this value if needed.

If you are measuring a deep-notch filter, more sensitivity may be required.

Perform the following steps:

Press

Amptd

, and then

CHOP On

so that

is underlined.

Press

BW,Swp

SWPTIME AutoMan

, and set the sweep time to 50 seconds.

These steps cause the optical spectrum analyzer to compensate for the

effect of stray light inside the analyzer’s monochromator.

Press

State

instr modes

, and then

STM/RESP

Press

STORE THRU->B,

and then

NORM On Off

to normalize the response.

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Agilent-technologies 83438A Manual de usuario Pagina 25

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