WA-1150 and WA-1650 Wavemeter Operating Manual
2 Front Panel Controls and Screens
EXFO Burleigh Products Group Inc. (09042-M-00 Rev C)
2-5
Table 2-2. Display Screen Information
Parameter
Description
Avg
Displays the number of previous measurements used to calculate the running
average. Calculation of the average wavelength and power uses the same average
value. On the Main and Wavelength screens, you can toggle the average between
Off and the numeric value set using the Measurement setup screen.
Off indicates averaging is not used.
Numeric value (2, 4, 8, 16, 32, 64, or 128). Change the numeric value on the
Measurement setup screen.
Vacuum/Std. Air
Identifies the medium in which the measurement occurs as standard air (15
°
C, 760
mm Hg and 0% relative humidity) or vacuum. You can change the medium to
vacuum on the Main and Wavelength screens.
Poffs
Displays the power offset value applied to subsequent power measurements. These
values enable you to obtain accurate power readings when you place an attenuator
external to the instrument. If you enter a power offset value equal to the external
attenuator, the instrument automatically displays the correct power. This is useful if
the signal input power exceeds the maximum allowed input of 10 mW (10 dBm).
Off indicates a power offset is not used.
Numeric value (1, 2, …, 20 in dB units). You cannot change the type of units.
Change the numeric value on the Measurement setup screen.
Power Units
The current laser power displayed in the selected units. You can change the type of
units on the Main or Power display screen. The options are dBm and mW or (
µ
W).
If mW or
µ
W are selected, the Power Autorange feature automatically sets units to
mW or
µ
W depending on input power.
Reset
Restarts calculations of Current - Start and Max - Min. When actuated, it zeros
elapsed time, then displays the start and current values.
Error Message
Indicates an error message, if any. See Appendix C for messages and corrective
action.
Wavelength Units
The current wavelength displayed in the selected units. You can change the units on
the Main or Wavelength display screen. The units are nm and GHz.
If an error has occurred, this area displays a status message.
See Appendix C for messages and corrective action.
Presence indicates that an exception has occurred. Check the status screen or read
the status byte. See Appendix C for messages and corrective action.
Setup Screens
The setup screens provide information that affects the display of measured values and
calculation of values. Each screen is summarized below and described in more detail in
the tables that follow. Access the setup screens by pressing
Setup
on the instrument
front panel and toggling the key to move through the choices.
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