PPA45xx Quick User Guide
Page 25
Phase Convention
Measurements of Phase can be expressed in one of
three formats:
-180⁰ to +180⁰
Commonly used in circuit analysis
0⁰ to -360⁰
Commonly used in power applications
0⁰ to +360⁰
Select as required
Keyboard Beep
Audible sound when keys are pressed
Disabled
Audible sound disabled
Enabled
Audible sound activated
Autozero
Autozero
Periodically re-zero’s input to prevent drift, useful for
long periods of DC analysis
Manual
Unit will only zero inputs if “Zero” is pressed by user
Program 1-6 Direct
Load
Program 1-6 may be recalled with a direct press of
the function keys (POWER, INTEG etc)
Disabled
Function will be disabled
Enabled
Function will be enabled
Zoom 2 High
Resolution
The data displayed in zoom 2 may be displayed to
one digit greater resolution than normal, this is
particularly useful when measuring phase at power
line frequencies
Disabled
Function will be disabled
Enabled
Function will be enabled
Independent Ranging
This allows the user to set different scale factors and
select independently internal / external shunts
separately on each phase
Disabled
Function will be disabled
Enabled
Function will be enabled
Low Value Blanking
Low value blanking will zero to display values under
the following conditions
Input Signal Peak
< 45% of RNG 1
< 25% of RNG 2
< 15% of all other ranges
Disabled
Function will be disabled
Enabled
Function will be enabled