Yes, only for the 'B' and 'C' units and MS2711/A/B. Turn the unit off - hold down the SYS key and turn the unit on - as soon as the screen starts to display, release the SYS key. The display should show ERASING SETUPS FROM EPROM, ERASING CALS FROM FLASH, ERASING ALL SWEEPS. NOTE: This will also erase the InstaCal information from the S113C, S114C, S331C and S331C models.
In wide spans, the MS2711B can take many measurements for every display point. If a very narrow signal is being received and average detection mode is on, only a few of the measurement points would see the signal; the rest would see the noise floor. The average of those will cause a display that is less than the actual signal level.
Dynamic attenuation cannot compensate for the "zero beat" that exists in all spectrum analyzers. Increase the starting frequency such that the zero beat is no longer visible.
The reference level offset should always be equal to whatever loss or gain is added externally. If you add an attenuator, the RL offset should be negative. If you add gain, the RL offset should be positive. In this case, the RL offset = -30
The MTBF (Avg.) for the MS2711B is 88,475 Hrs.
Yes. Turn the unit off - Hold down the Escape/Clear key and turn the unit on - as soon as the screen starts to display, release the Escape/Clear key. The display should show FACTORY DEFAULTS SETTINGS. This will not erase any stored setups or plots.
Refer to the Hand Held Spectrum Analyzer Users Guide, Field Measurement chapter for a detailed explanation of these Adjacent Channel Power Ratio and Channel Power measurement functions and examples.
ACPR stands for Adjacent Channel Power Ratio. This is a Spectrum Analyzer measurement. It is a measure of the amount of adjacent channel power that leaks to within the channel of interest. The Users Guide provides extended information on these functions.
Attenuation, RBW and VBW can all be automatically coupled or manually coupled. When automatically coupled, the attenuation changes as the reference level is changed, the RBW changes as the span is changed and the VBW changes as the RBW is changed. When they are manually coupled they can be changed independently. The "*" after the parameter indicates that it is manually coupled.
More than likely, there is a large signal outside of your measurement span causing the pre-amp to saturate. The pre-amp is a broadband amplifier, with no tuning or filtering before its input. This is why we recommend the pre-filters in the optional accessories.
All model "C" units have the external connector for power monitoring, but power monitor is an option (#5) and must be installed at the time of ordering or the unit must be returned for an upgrade. You will also need a power detector, which is an accessory. Check your users guide for a list of Anritsu Power detectors available for your unit.
Download your free update via the Internet. The software tools help menu has a direct link to the Anritsu Download site where this can be found. Or go directly to "http://www.us.anritsu.com/sitemastersoftware" Handheld Software Tools. Or call 1-800 ANRITSU and ask for Site Master Support.
Yes. If you are testing the line with the antenna attached, there is a good chance that the Site Master could be damaged by ESD. This happens because ESD gets onto the center conductor through the antenna's elements. It is safe to test with a load or short because there is no path for the ESD to get onto the center conductor.
An integrator failure is typically caused by excessive RF power to the input of the Sitemaster. Different Sitemaster models have different damage levels that they can tolerate and newer models have improved immunity to overpower conditions. See the appropriate user manual for the damage level for your particular unit. One common way this overpower condition can be caused is by a high powered interfering carrier when testing with the antenna attached at a co-locate site. If the power level of the interference is too high it could cause damage to the Site Master. To find out if damage has occurred, disconnect the Site Master from the coax under test and if the integrator failure still occurs then there may be damage to the unit. To prevent this type of situation, check the power level on the antenna first using a power meter or power monitor (Options 29 or 5) to see if any power is present on the antenna before sweeping it.
This is a problem with the database operations. It is caused when more than 2 lines of information have been added into the Plot Description field even if the extra lines are blank. To fix this, select the Record then select Edit. Place the cursor at the end of the 2nd line of the Plot Description field. Left-click and hold down the mouse button and scroll down. The cursor will now be below the 2nd line. Press the Delete key on the keyboard to remove the extra lines. The cursor should now be at the end of the 2nd line. Either select another record or select Done. To prevent this from happening on the initial entry of Plot Descriptions, try to remember not to press the Enter key when done with the 2nd line entry.
It is normal for the display contrast to change with temperature. Use the contrast adjust to compensate.
Not usually. The cable used is very critical in making accurate, repeatable measurements. The cable must be 'phase stable'. Many are, including all that are sold with the Site Master. This type phase and loss of this type of cable does not change much as it is flexed and therefore produces consistent measurements when used with your Site Master.
The SiteMaster can be used immediately without any warm up time, however the temperature inside the box will rise quite fast in the first 5 minutes of operation and then much slower after that. If you don't want to wait, you can calibrate and make measurements immediately. However you may need to recalibrate as the box warms up, the SiteMaster will warn the operator if the temperature change requires another calibration.
A return loss measurement is like using a SWR meter, it is a quick pass/fail type of measurement. DTF is used to identify where a problem occurs, your knowledge of the installation will indicate the type of problem. For example, a large spike in the middle of a main feed line indicates a problem. In some areas of the USA, cables make excellent target practice and bullet holes are common. A large spike typically indicates an open or short of some type. Somewhere in the middle, a crushed cable, ignoring the antenna.
One thing, on long cable runs, you can use either VSWR or RL in DTF. For short cable runs, like jumpers, VSWR sometimes makes it easier to interpret the display.
Software Tools provides several methods of exporting a graph for use in other applications. The Copy and Paste method will work for all MS Windows compatible programs. In addition, the File, Export function can save your Graph in a Windows Meta File format .WMF or to Text. The text file contains the data behind the graph for import into any spreadsheet.