Filter
Top Products
Page 92 OmniTek XR User Guide, Software Release 2.3
Graticule Type
The graticule for the PPMs may be changed from DBFS to alternative calibrations
corresponding to different meter types (Nordic, BBC etc.). The required meter type is
selected from a drop-down list of Graticule options. Note: The settings for the reference
levels, alarm trigger points etc. automatically switch to the ones conventionally associated
with the selected meter type, though you can then make any adjustments to these levels
that you require. The range of the graticule and the meter ballistics are also automatically
adjusted to reflect those of the selected standard.
The scope of the different graticules supported is shown in the following diagram:
Error Detection
Four potential error levels are defined – Clip, Over, Silence and Mute. For each error
type, a level is defined at which the associated error will be logged (and an alarm
sounded if enabled) if this level is maintained for a particular length of time (also defined
within the dialogue).
The levels and the timeout set here also affect the logging and SNMP modules, which
used to record details of the errors encountered (see page 121).
The settings made may be stored as part of an overall system configuration file, and are
also saved when the application is closed and re-loaded on subsequent start-up.
Note: The settings in this part of the dialogue automatically change to pre-defined standard
values when a different meter type is selected as the graticule type. It is therefore
important to ensure that the required graticule type is selected before making any
adjustments to these Error Detection settings.
Reference Levels
The two reference level settings control the position of the red and yellow markers
alongside the individual PPM meter displays and the points in those displays at which the
colour used for the meter bar changes from green to yellow and from yellow to red.
Note: These levels are also automatically set to pre-defined standard values when a different
graticule type is selected, so again it is important to ensure that the required graticule
type is selected before making any adjustments to these reference levels.
Ballistics
The values set in this part of the dialogue control the speed at which the meters respond
to changes in meter level. The Integration value sets the time the PPM takes to rise to
within 2dB of the peak value, while the Decay Time setting controls the time the PPM
takes to fall by the specified percentage.