Setting Power Reference Level - VeEX FX87 User Manual

Dwdm tunable laser source

Table of Contents

Select a wavelength by pressing the

button to confirm the choice. The new wavelength then appears in the top right corner of the

display. To keep the previous wavelength effective, select a wavelength and then press the

button (EXIT).

If the fiber under test carries a signal with WaveID details, select [AUTO]. Then FX87 determines

the wavelength automatically.

If the [AUTO] option is selected for a signal without WaveID or a modulated

signal, the wavelength value goes blank, and the measurement results are NOT

valid.

8.3.1 Setting Power Reference Level

To measure the fiber under test span loss, first set a reference level for each test wavelength.

For that press the

|F3|

• REF SET command: sets the current power value as the reference level. To do

that, make sure the cursor is at REF SET and press the

a result, the value onscreen changes to --.--dB (see the Figure below). The

reference level value is also saved to the device memory.

FX87 DWDM Tunable Laser Source User's Manual

|Up|

button (MORE), then

Selecting a reference option for PM measurement

and

|Down|

buttons, then press the

|F2|

(REF). The resulting screen is shown below:

|Shift/Enter|

button. As

Page 18 of 39

|F1|

Table of Contents