Keysight N9927-90001 User’s Guide 357
Pulse Measurements Mode – Option 330
Supported Power Sensors
Supported Power Sensors
Pulse measurements are made using any of the Keysight U2020 X-Series USB
Peak Power Sensors.
Zeroing of the U2020 X-Series USB Peak Power Sensors is performed
automatically at power up, every 5 seconds, and prior to measuring low level
signals.
Switching between Pulse Measurement Mode and Power Meter Mode
NOT Supported - Using a single USB Peak Power Sensor and switching
between Power Meter Mode and Pulse Measurement Mode. Both modes
will attempt to program the sensor, which could cause one or both modes
to hang, or at least report inaccurate data.
Supported - Using one U2000A Average Power Sensor connected to the
top USB port for Power Meter Mode, and one Peak Power Sensor
connected to the bottom USB port for Pulse Measurement Mode.
How to Connect the Power Sensor
Connect your Power Sensor to one of the FieldFox USB ports.
A sequence of status lights are displayed on the base of the power sensor.
— Green blinking light indicates the power sensor is communicating or
self-tests are being performed. Because the FieldFox is usually
communicating with the power sensor when it is connected, this is the
normal mode of operation.
— Amber light indicates Zeroing is being performed.
— Red light indicates an error has occurred with the power sensor. Refer to
power sensor documentation.
— No light indicates the FieldFox is not communicating with the power
sensor. This is the case when in Hold mode or when NOT in Pulsed
Measurement Mode.
Use an attenuator between the DUT and the power sensor when
measuring power levels that are higher than +20 dBm. The attenuator
value can be subtracted from the measurement using the Offset feature,
discussed in “Relative and Offset Power Measurements” on page 342.
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