54 Keysight N9927-90001 User’s Guide
CAT (Cable and Antenna Test) Mode
1-Port Cable Loss Measurements
A 2-port Insertion Loss measurement is usually more accurate than a 1-port
Cable Loss measurement. However, to perform a 2-port Insertion Loss
measurement, both ends of the cable must be connected to the FieldFox.
How to make a 1-port Cable Loss Measurement
1.
Press
Preset
then
Preset
.
2.
Then
More
then
Cable Loss (1-Port)
3.
Connect the cable to be tested.
4.
Press
Freq/Dist
and enter
Start
and
Stop
frequency values of the
measurement.
5.
Press
Sweep 3
then
Min Swp Time
. Increase the Sweep Time until a stable
trace is visible on the screen. The amount of time that is required increases
with longer cable lengths. Learn more in the
Supplemental Online Help
:
http://na.support.keysight.com/fieldfox/help/SupHelp/FieldFox.htm
6.
Remove the cable to be tested.
7.
Press
Cal 5
, then
QuickCal
or
Mechanical Cal
. Mechanical Cal.
8.
Follow the prompts to perform calibration at the end of the jumper cable
or adapter. Learn more about Calibration in
9.
Connect the cable to be tested.
10.
Connect a LOAD at the end of the cable to be tested. This limits the
reflections to faults that are located in the cable under test.
11.
Press
Trace 6
then
Math and Memory
then
Data->Mem
to store the trace
into Memory.
12.
Remove the LOAD and leave the end of the cable to be tested open.
In high-loss conditions, a Cable Loss measurement becomes ‘noisy’ as the
test signal becomes indistinguishable in the FieldFox noise floor. This can
occur when measuring a very long cable and using relatively high
measurement frequencies. To help with this condition, use High Power
(
) and Averaging. (
QuickCal is only available on N991xA/2xA/3xA models.
Low-level standing waves (also known as ‘ripple’) which may be visible in
reflection measurements, can hide the actual loss of the cable. Steps 10
through 13 can minimize the ripple. Perform the measurement with and
without steps 10 through 13 and choose the method with the least amount
of ripple.
Содержание N9913A
Страница 6: ...6 ...
Страница 56: ...56 Keysight N9927 90001 User s Guide CAT Cable and Antenna Test Mode 2 Port Insertion Loss Measurements ...
Страница 82: ...82 Keysight N9927 90001 User s Guide TDR Time Domain Reflectometry Option 215 TDR Measurement Settings ...
Страница 106: ...106 Keysight N9927 90001 User s Guide NA Network Analyzer Mode NA Mode Settings ...
Страница 142: ...142 Keysight N9927 90001 User s Guide Calibration for NA CAT and VVM Modes Calibration Method Summary ...
Страница 202: ...202 Keysight N9927 90001 User s Guide SA Spectrum Analyzer Mode Channel Measurements ...
Страница 262: ...262 Keysight N9927 90001 User s Guide IQ Analyzer IQA Option 351 CPU2 Only Other Features Available ...
Страница 286: ...286 Keysight N9927 90001 User s Guide Interference Analyzer SA Mode Option 236 Record Playback SA Option ...
Страница 292: ...292 Keysight N9927 90001 User s Guide Reflection Mode SA Models Option 320 Reflection Mode Settings ...
Страница 316: ...316 Keysight N9927 90001 User s Guide Frequency Offset Using Power Sensor FOPS Option 208 FOPS Settings ...
Страница 332: ...332 Keysight N9927 90001 User s Guide Pulse Measurements Mode Option 330 Pulse Measurement Settings ...
Страница 346: ...346 Keysight N9927 90001 User s Guide VVM Vector Voltmeter Mode Option 308 A B and B A Measurements ...
Страница 370: ...370 Keysight N9927 90001 User s Guide AM FM Metrics SA Only and Option 355 Interpreting AM FM Metrics Error Messages ...
Страница 444: ...444 Keysight N9927 90001 User s Guide Noise Figure Mode Option 356 CPU2 Only Troubleshooting ...
Страница 470: ...Data Analysis Features All about Scale Settings 470 Keysight N9927 90001 User s Guide ...
Страница 528: ...528 Keysight N9927 90001 User s Guide Working with the Lithium Ion Battery Lithium Ion Battery Disposal ...
Страница 544: ...544 Keysight N9927 90001 User s Guide Safety Considerations Certification and Compliance Statements ...
Страница 546: ...546 Keysight N9927 90001 User s Guide Connector Care Review ...
Страница 548: ...548 Keysight N9927 90001 User s Guide Connector Care Review ...
Страница 550: ...550 Keysight N9927 90001 User s Guide Specifications Data Sheet ...
Страница 553: ...553 Keysight Handheld Analyzers N99xxA User s Guide D Korean Battery Safety Translation ...
Страница 554: ...554 Keysight N9927 90001 User s Guide Korean Battery Safety Translation ...
Страница 555: ...555 Keysight Handheld Analyzers N99xxA User s Guide E Keysight Software End User Licensing Agreement EULA ...
Страница 556: ...556 Keysight N9927 90001 User s Guide Keysight Software End User Licensing Agreement EULA ...
Страница 557: ...Keysight N9927 90001 User s Guide 557 Keysight Software End User Licensing Agreement EULA ...
Страница 558: ...558 Keysight N9927 90001 User s Guide Keysight Software End User Licensing Agreement EULA ...
Страница 565: ......