Standard Measurements - Ametek CSW5550 User Manual

User Manual

3.14 Standard Measurements

Standard measurements are always available through the MEAS key on the front panel. These
measurements are spread across two to four screens to enhance readability. Switching between
these screens can be done by successively pressing the MEAS button on the front panel. This
will cause the screen to cycle through all available measurement screens.
3.14.1 CSW Series Measurements
For CSW Series, the following four measurement screens are available:
Mode
VOLTAGE
CURRENT
FREQUENCY
POWER
VA POWER
PEAK CURR
POWER FACT
CREST FACT
VOLT THD
CURR THD
INST PK CURR
PHASE
The CSW Series has a fourth measurement screen for harmonics and trace analysis
measurements. This subject is covered in the next chapter.
Measurements are always running in the background. When the user selects a measurement
screen for display, the AC source first updates all the measurement parameters before
displaying the requested screen. This process may take up to a second. Consequently, pressing
the MEAS key may not always bring up the selected screen immediately. There will be a
perceptible delay. This will prevent the screen from appearing with invalid or blank readouts.
The measurement method for voltage and current will depend on the power source operating
mode. The following table shows the return value type (rms or average) and method of coupling
when the measurement command is initiated with a different extension at various operating
modes (AC, DC or AC + DC).
Measurement
Extension
and Coupling
Coupling
CSW Series
MEASUREMENTS 1
AC rms voltage
AC rms current
Frequency
Real power
MEASUREMENTS 2
Apparent power
Highest AC current
Power factor
Crest factor
MEASUREMENTS 3
Voltage distortion
Current distortion
Instantaneous peak
current
Phase angle
AC
AC rms
DC rms
AC
AC
DC Voltage
DC Current
Power
Highest DC current
found
Highest DC current
Operating Mode
DC
rms
rms
DC
California Instruments
DC AC+DC
AC rms voltage
AC rms current
n/a Frequency
power Apparent power
Highest AC
found current found
n/a Power factor
n/a Crest factor
n/a Voltage distortion
n/a Current distortion
Instantaneous
found peak current
n/a Phase angle
AC + DC
rms
average
DC
n/a
89