5-15
CH 5/ Start Menu
Frequency,
voltage and
current settings
(continued)
Action... Result...
STEP 3: Tracking allows users to
set parameters to monitor changes
in frequency.
Voltage Class:
Check to select the power system
that define the voltage range of
distribution of the monitored
system.
• Standard voltage range is 16-
440 Hz.
• Fast voltage range is 16-65 Hz.
• Internal uses the nominal
frequency when making
measurements where no
reference signal is available.
NOTE: Always enter a nominal
frequency that matches your
line frequency. This ensures
that if the 4400 loses external
sync, it will have a
corresponding internal sync.
Sync Channel:
Check to specify the external sync
mode to show which channel the
signal is connected to. See page
5-16 for more details on
frequency synchronization.
• Ch A Volts: When set to Ch A,
the 4400 attempts to sync to an
incoming voltage signal.
• Ch D Volts: When set to Ch D,
the 4400 only attempts to sync
to voltage Ch D.
Tracking Range:
The Min and Max refer to the
range of frequencies that the
phase locked loop will “hunt” if
sync is lost. See page 5-16 for
more details on frequency
tracking.
•Press OK to accept new
frequency tracking settings.
•Press Cancel to quit and return
to Nominal Values screen.
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