Figure 36 IM Order Selection WindowThe user is at liberty to record the peak IM level of a test point at any time during the active frequency sweep.Alternatively, if the set measurement interval is allowed to expire, the user will have the option to save the peak result tothe test report.1.9.3 Spectrum Monitor ModeThe Spectrum Analyzer mode offers an added analysis tool and is especially useful in detecting external interferenceintroduced in the instrument’s RX band. When the application starts up, a sweep is automatically initiated to detectinterferers in the RX band of the instrument. In the default state, the two TX test tones will remain off, but the user alsohas the option for turning them “on”. When “on” the operator will see all intermodulation products that fall within thereceive band as well as wide band interference of whichever nature. A peak hold feature identifies the worst case valuemeasured during each sweep.The features offered by this mode are as follows:• Adjustable sweep step size• A peak level marker highlights the peak IM level and at what frequency this measurement was taken• The option to have the RF on or off in this modeOperating Manual | The Battery Operated Intermodulation Test System54
