Setting Up A Return Loss Measurement; Making A Return Loss Measurement - Deviser SitePROFILER User Manual

E7000L SitePROFILER
Handheld Cable/Antenna Analyzer
5-1

Setting Up a Return Loss Measurement

The following is a step-by-step guide for preparing to conduct a return loss 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 Return Loss.
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 Uplink + 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 0dB and Bottom to 60dB, or simply
tap Full 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.
5-2

Making a Return Loss Measurement

Once you have set the desired parameters (as covered in Section 5-1), the instrument is ready to perform
the Return Loss 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. Return loss measurements will save as .RTL files.
For more details on naming and saving files to the instrument or USB, see Section 17-2.
48