Power Meter Settings - Agilent Technologies FieldFox N9912A User Manual

CAUTION
How to Connect the Power Sensor
Connect your U2000 Series Power Sensor to one of the USB ports.
NOTE 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 on page
110.
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
 Amber light indicates Internal Zeroing is being performed.
 Red light indicates an error has occurred with the power sensor. Refer to
 No light indicates the FieldFox is not communicating with the power sensor.

Power Meter Settings

Select Power Meter Mode before making any setting in this section.
How to select Power Meter Mode
 Press Mode_.
 Then
Zeroing
The Agilent USB Power Sensors perform Internal Zeroing automatically. Because
the U2000 series power sensors have an internal switch, Internal Zeroing does
NOT require that the power source be turned OFF.
For highest measurement accuracy, when measuring power levels below –30
dBm, External Zeroing should be performed.
During External Zeroing, the power source MUST be turned OFF or the power
sensor disconnected from the power source (device under test). Power is OFF
when power sensor measurements are below –60 dBm. When power higher than
this is detected at the sensor, a warning message is shown on the FieldFox and
External Zeroing will not proceed.
How to perform External Zeroing
 Press Cal 5 .
 Then
108
Please observe the damage level of your U2000 Series Power Sensor.
Typical damage levels of the U2000 Series Power Sensor are:
+25 dBm (320 mW) average
+33 dBm peak (2 W) <10μs
+5V
are being performed. Because the FieldFox is usually communicating with the
power sensor when it is connected, this is the normal mode of operation.
power sensor documentation.
This is the case when NOT in Power Meter Mode.
Power Meter.
External Zero.
N9912A FieldFox User's Guide