EXFO FVA-60B, Руководство пользователя

Страница: 12 / 37

FVA-60B
5
3 Operating the FVA-60B
Variable Optical
Attenuator
Calibrating the Unit
For optimum performance, the unit should be calibrated before each test session.
To calibrate the unit:
1.
Power on the unit.
2. Press shift/exit , then CALIBRATE . The internal motor runs for a few seconds
(adjusting attenuation to minimum) and the working marker is displayed.
To check the minimum insertion loss for a particular wavelength, select the
wavelength and perform a calibration. The value displayed after calibration is the
minimum insertion loss at the selected wavelength.
Note: Performing a calibration sets the FVA-60B to Absolute mode.
Using the Absolute Mode
The Absolute mode displays the current wavelength and attenuation settings. It is
selected by default when powering on the FVA-60B. If the unit was scanning (setting
a new attenuation value) when it was powered off, the scan will be completed at
power-up.
Note:
The attenuation value is the actual insertion loss between the input and
output ports including connectors.
dB
nm
Wavelength
Attenuation
FVA-60B
5
3 Operating the FVA-60B
Variable Optical
Attenuator
Calibrating the Unit
For optimum performance, the unit should be calibrated before each test session.
To calibrate the unit:
1.
Power on the unit.
2. Press shift/exit , then CALIBRATE . The internal motor runs for a few seconds
(adjusting attenuation to minimum) and the working marker is displayed.
To check the minimum insertion loss for a particular wavelength, select the
wavelength and perform a calibration. The value displayed after calibration is the
minimum insertion loss at the selected wavelength.
Note: Performing a calibration sets the FVA-60B to Absolute mode.
Using the Absolute Mode
The Absolute mode displays the current wavelength and attenuation settings. It is
selected by default when powering on the FVA-60B. If the unit was scanning (setting
a new attenuation value) when it was powered off, the scan will be completed at
power-up.
Note:
The attenuation value is the actual insertion loss between the input and
output ports including connectors.
dB
nm
Wavelength
Attenuation
FVA-60B
5
3 Operating the FVA-60B
Variable Optical
Attenuator
Calibrating the Unit
For optimum performance, the unit should be calibrated before each test session.
To calibrate the unit:
1.
Power on the unit.
2. Press shift/exit , then CALIBRATE . The internal motor runs for a few seconds
(adjusting attenuation to minimum) and the working marker is displayed.
To check the minimum insertion loss for a particular wavelength, select the
wavelength and perform a calibration. The value displayed after calibration is the
minimum insertion loss at the selected wavelength.
Note: Performing a calibration sets the FVA-60B to Absolute mode.
Using the Absolute Mode
The Absolute mode displays the current wavelength and attenuation settings. It is
selected by default when powering on the FVA-60B. If the unit was scanning (setting
a new attenuation value) when it was powered off, the scan will be completed at
power-up.
Note:
The attenuation value is the actual insertion loss between the input and
output ports including connectors.
dB
nm
Wavelength
Attenuation
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com