Measurement Operations & Settings Signal Conditioning
168 Agilent 8163A/B, 8164A/B & 8166A/B Mainframes, Fifth Edition
Status Commands
The instrument status model can be c ontrolled, and its current state
queried, using commands from the SCPI STATus subtree. All the STATus
commands available for the 8156A attenua tor are supported by the
81560A/1A/6A/7A modular attenuator fa miliy except:
STATus:OPERation:PTRansition
STATus:OPERation:NTRansition
STATus:QUEStionable:PTRansition
STATus:QUEStionable:NTRansition
There are new status bits available to query the current modular
attenuator state.
User Calibration Data
The user calibration mode of the 8156A overrides th e attenuator’s built-in
wavelength calibration table, so al lowing user defined wavelength
compensation. Since the 81560A/1A/6A/7A modula r attenuator family
features an improved factory calibra tion process, so this user calibrat ion
feature (page 123) is not supported.
The 81560A/1A/6A/7A modular attenuator fami ly includes a user
configurable offset function. If you enab le this feature, the module’s
internal wavelength compensation rem ains active and you are able to
compensate for additional external wavelength-dependent losses within
the measurement setup by creating a wavelength/of fset table. For
additional information, refer to our Appli cation Note "Variable Optical
Attenuator in BER Test Applications", part number 5988-3159EN.