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10 

Spectrum Analyzer (SA) Mode 

SA measurements require NO calibration. 
 
Check for a Compressed Measurement 
1.

 

Using a marker at the signal peak, make note of the 
signal power level. 

2.

 

Increase the RF Attenuation level by 5 dB. 

 

If the signal level does NOT change, then NO 
compression exists. This indicates that the signal is in 
the linear region of the receiver.  

 

If the signal level DOES increase with more 
attenuation, then compression DID exist. Set the RF 
Attenuation value at the setting when further 
increases no longer result in an increase in the 
displayed power level.   

Set RF Attenuation 
1.

 

Press 

Preset

 then 

Preset

   

2.

 

Press 

Mode

 then 

SA

  

3.

 

Press 

Scale/Amptd

 then 

RF Atten

  

 

Auto

  

RF Attenuation is set by adjusting the Ref 

Level.   

 

Man

  Change the RF Attenuation level manually. 

Display up to four types of traces 
SA settings are applied to all traces. 

1.

 

Press  

Trace   6

 then 

Trace 1,2,3,4

 repeatedly to 

select a trace number to display.   

2.

 

Then 

State

 to select a trace type. 

 

 

Summary of Contents for FieldFox N9927-90002

Page 1: ...n and LED 1 Battery Usage 2 Measure Return Loss CAT 3 Measure 1 Port Cable Loss CAT 4 Measure DTF CAT 5 Measure S Parameters NA 6 Multi Trace Configurations NA 8 Calibration CAT NA VVM 9 Spectrum Anal...

Page 2: ...Save files to these devices for quick download to a PC USB Power Sensor For making Power Meter measurements Opt 302 Battery charger or extra battery The Power Button and LED To turn power ON briefly...

Page 3: ...he FieldFox display as much as possible Briefly press the power button to switch to Stand by mode when not being used Press again to restore power All current settings are preserved The FieldFox will...

Page 4: ...UT 2 Select Preset then Preset Returns the FieldFox to known settings 3 Select Mode then CAT Cable and Antenna Test 4 Then Return Loss Default measurement 5 Press Freq Dist and enter Start and Stop fr...

Page 5: ...ss Sweep 3 then Min Swp Time Increase the sweep time until a stable trace is visible on the screen 6 Press Cal 5 then follow the calibration prompts 7 Connect the DUT cable to be tested to the FieldFo...

Page 6: ...to Fault 5 Press Freq Dist then Stop Distance and enter the length of the DUT 6 If a diplexer or other filter is in the measurement path press Meas Setup then select Frequency Mode Bandpass Then pres...

Page 7: ...surement Requires Opt 122 OR Press Trace 6 then Num of Traces then select a Multi trace configuration Learn more on page 8 3 Press Freq Dist then either Start and Stop or Center and Span to enter a fr...

Page 8: ...cale Manually enter a scale per division to view specific areas of the trace Ref Level Manually set the value of the reference line Ref Position Manually set the position of the reference line Values...

Page 9: ...such as format markers and limit lines are applied to the ACTIVE trace in the same manner as when a single trace is present To select a multi trace configuration Press Trace 6 then Num Traces Then ch...

Page 10: ...or Power Level is changed When using a phase stable jumper cable or adapter to connect the DUT to the FieldFox These should be high quality components Press Cal 5 then follow the prompts During a Quic...

Page 11: ...increase with more attenuation then compression DID exist Set the RF Attenuation value at the setting when further increases no longer result in an increase in the displayed power level Set RF Attenu...

Page 12: ...hich allows you to use the arrows to increment the channel number by the specified value 5 Then Back and Center Start or Stop Channel 6 Press Measure 1 then Channel Measurements and choose from the fo...

Page 13: ...e choose where in the FieldFox data flow that data is recorded RawMeas is easiest Record Interval sets the amount of time to wait between individual trace recordings Segment Count sets the number of t...

Page 14: ...ed from the measurement using Offset as follows Select Offset Press Scale Amptd then Offset On Off Then Offset Val Enter a value by which the power meter display is offset A positive value compensates...

Page 15: ...d USB Saves Recalls files to or from a USB Flash drive 2 Then File Type State Saves ALL FieldFox instrument settings and calibration for ALL Modes to an sta file Trace State Saves the current trace al...

Page 16: ...Manufacturing Part Number N9927 90002 Print Date October 1 2014 Supersedes June 12 2012 Keysight Technologies Inc...

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