Optimize Input Polarizer; Toggle Mainframe Local-Lockout Status; Zero External Power Meters - Agilent Technologies 86038B User Manual

Optimize Input Polarizer

Toggle mainframe local-lockout status

Zero external power meters

Agilent 86038B Photonic Dispersion and Loss Analyzer, Second Edition
Allows manual activation of the procedure to find the optimum
input polarizer position, performed at the center of the current
measurement wavelength range. This procedure aligns the
polarizer with the input polarization from the tunable laser.
During normal measurement procedures, this is activated
automatically as needed during normalization measurements.
Manual activation can be used for diagnostic purposes,
especially if the setup seems to deliver insufficient optical
power. In that case, this optimization can be applied before
using the Real-Time Port Monitor. Manual use will cause the
current normalization measurement to become invalid, if a new
position is selected. If the position found is within 3° of the
previous setting, the old setting and normalization data will be
maintained. (A normalization measurement can be saved to
reload after testing the change of parameters.)
This command can be used to allow or lock out manual "local"
access to the 8164B display and user interface. When local
access is locked out, the 86038B software expects exclusive
control of the instruments and does not reduntantly resend the
settings, which allows faster measurements. Disabling the
display also helps prevent accidental interruption of system
operations from front panel buttons. When local access is
allowed, pressing "Local" causes the instrument display to be
shown and front panel buttons to be activated.
If power meter modules are installed in the 8164B mainframe
for Option 400, then this command activates the Zero correction
function of the modules to remove electrical offsets. This should
be used after the instruments are warmed up and before
starting making measurements requiring high dynamic range.
The tunable laser will be deactivated during this measurement.
Make sure that no other light sources are entering the power
meters. Details to this function are found in the Lightwave
Measurement System User's Guide.
103