E7000L SitePROFILER
Handheld Cable/Antenna Analyzer
50
6-1
Setting Up a VSWR Measurement
The following is a step-by-step guide for preparing to conduct a VSWR measurement using the E7000L
SitePROFILER cable analyzer.
Procedure:
1.
To set the instrument in the cable analyzer mode, press the
Menu
button to view the measurement
mode desktop. Tap the
Cable & Antenna
softkey.
2.
Tap the
Measurement
main menu softkey to open the Measurement menu on the right side of the
display. Under the
Standard
submenu, select
VSWR
.
a.
To determine which measurement is best for your needs, please refer to the Introduction of
this chapter.
3.
Tap the
Freq/Dist
main menu softkey. Under the
Frequency
submenu, set your desired Start and
Stop frequencies. There are two ways to accomplish this.
a.
Manually enter the desired start frequency by tapping
Start Freq
and using the arrow keys,
data keypad, or rotary knob. Press Enter to confirm. Repeat for
Stop Freq
.
b.
Open the
Signal Standard
submenu and tap
Select Signal STD.
Double-tap your preferred
signal standard on the list to select it and return to the submenu, then select the signal type
by tapping
Uplink, Downlink
, or
Downlink
.
4.
If “ON” appears under Calibration Status on the left-hand side of the display, continue to step 5.
Otherwise, you will need to calibrate the instrument. See Chapter 3 — Calibrating the E7000L.
5.
Tap the
Amplitude
main menu key and use the
Top
and
Bottom
softkeys to set the amplitude scale.
A general guideline for best measurement results is to set Top to 60dB and Bottom to 1dB, or simply
tap
Full Scale
or
Auto Scale
.
6.
Press the
Sweep
(#3) datakey to open the Sweep submenu. Tap
Data Points
to select the resolution
of your measurement. You may choose 130, 259, 517, 1033, or 2056 data points.
a.
The default setting is 259. The higher the setting, the longer it will take to complete a sweep.
7.
In the Sweep submenu, tap
RF Immunity
to toggle interference rejection between
High
and
Low
depending on your measurement needs.
6-2
Making a VSWR Measurement
Once you have set the desired parameters (as covered in Section 6-1), the instrument is ready to perform
the VSWR measurement.
Procedure:
1.
Connect the antenna or cable feedline to the RF Out port on the instrument, using a test port
extension cable if necessary.
2.
The measurement trace will appear on the instrument display in real time.
3.
For best results, allow the instrument to perform several sweeps in Continuous mode.
For details on analyzing the measurement results, please refer to Chapter 16 — Markers and Limit Lines.
Saving the Measurement:
When you have conducted a successful measurement and wish to save the results for later viewing or
analysis, press the
Save
button to the top-right of the display. VSWR measurements will save as .SWR files. For
more details on naming and saving files to the instrument or USB, see Section 17-2.
