Measuring Power; Selecting A Power Head (Sensor); Making A Power Measurement - Keysight 53147A Operating And Programming Manual

Measuring Power

The Keysight 53147A/148A/149A can measure signal power in the power and
frequency ranges listed in the specifications in Chapter 4. The power
measurement, which is shown in a dedicated area of the display, includes a digital
readout and an analog representation. The display, which can be configured to
show power in units of dBm or Watts, is auto-ranging when set to measure in
Watts.

Selecting a Power Head (Sensor)

There are a number of Keysight power heads that can be used with the Power
Meter in this instrument. Choosing the appropriate power head is a matter of
matching the head's characteristics to the signal to be measured.
Before you can make any power measurement, you must determine which power
head (sensor) to use for the measurement, select the power head in the
instrument's menu (see
Meter to use the appropriate calibration factor for the frequency of the signal. The
five power head models that have pre-recorded calibration-factor tables in the
instrument's non-volatile memory are listed under
(HEAD)"
You can also modify the data points (frequency/calibration-factor data pairs) in
the preconfigured calibration-factor tables, add data points to these tables, and
add up to three custom tables for power heads that are not included in the
instrument's menu. Instructions for modifying and adding data points in
calibration-factor tables are provided in
Tables"

Making a Power Measurement

When you turn the Power Meter on, you must always zero and calibrate it with the
power head connected before making any measurements. If you are using a
different model power head than the one used the last time the Power Meter was
used, you must also set the power head model in the instrument's menu. As part
of the measurement sequence, you must input either the frequency of the signal
you intend to measure or the power factor for that frequency (from the table
provided with the power head).
Keysight 53147A/148A/149A Operating and Programming Guide
"Using the Menu"
on page 121.
on page 97.
Operating Your Instrument
on page 113), and configure the Power
"Power Head Selection
"Modifying and Adding Calibration Factor
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