Dranetz Visa Guia do Utilizador descarregar pdf (Página 93)

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-

PowerVisa 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 PowerVisa 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 PowerVisa attempts to sync

to an incoming voltage signal.

• Ch D Volts: When set to Ch D,

the PowerVisa 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.

MARK110c

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