Agilent Technologies N9913A User Manual page 26

Caution Power Level settings in this mode will NOT change Power Level settings in other
modes. To help prevent damage to your DUT, use caution when changing modes
with your DUT connected to the FieldFox test ports.
How to set Output Power
 Press Meas Setup 4.
 Then
 Then
Interference Rejection
Use this setting when you suspect that other signals in the area are interfering
with a measurement. Interference may look like a spike or lack of stability in the
measurement trace. While monitoring a measurement at a specific frequency,
toggle this setting between ON and OFF. If the measurement result decreases
while ON, then there is an interfering signal in the area. Continue to make
measurements with Interference Rejection ON. However, this will slow the
measurement speed.
Once enabled, up to SIX sweeps may be required before the interfering signal is
neutralized.
This setting can be changed at any time without affecting calibration accuracy.
How to set Interference Rejection
 Press Meas Setup 4.
 Then
 Then choose from the following:
26
Power
Output Power
High (Default setting) Sets output power to the maximum achievable power
o
at all displayed frequencies. Output power is NOT FLAT across the displayed
FieldFox frequency span. Please see the FieldFox Specifications (page 232)
for expected power levels.
Low Sets output power to approximately –45 dBm, FLAT across the
o
displayed FieldFox frequency span.
Man Set output power to an arbitrary value, FLAT across the displayed
o
FieldFox frequency span. If flattened power can NOT be achieved, a warning
message and beep occurs. To achieve a flattened output power, reduce the
power level or stop frequency.
Then press
Power Level
o
Then enter a value using the numeric keypad, the ▲|▼ arrows, or the rotary
o
knob.
Press Enter.
o
Interference Rejection [current
No interference rejection and fastest possible sweep speed.
Off
o
Minimum The lowest level of Interference rejection.
o
The medium level of Interference rejection.
Medium
o
The highest level of Interference rejection.
Maximum
o
setting].
FieldFox User's Guide