The velocity factor (VF) is a fundamental property of the RF cables in the system under test, which affects the speed atwhich signals travel through the system. The velocity factor varies from cable to cable, but its value is always greater thanzero and less than or equal to one.If the system under test contains multiple cables of different velocity factors, the velocity factor of the longest cable shouldbe chosen for the VF setting.8.2.1.14 Test Point LabelThe user-changeable Test Point Label appears at the top left-hand corner of the application window. This label will appearin the test report when the associated test point is recorded. The default label is “Top of Rack”.8.2.1.15 Config Lock (iQA only)The “Config Lock” icon shows whether the configuration mode is accessible or not.8.2.1.16 Button BarThe button bar is the main user-instrument interface.8.2.1.17 HPA TemperatureThis temperature display area doubles as an alarm status indicator. As soon as an instrument alarm is triggered it willshow an alarm message in red text in place of the temperature display. Press on the alarm message and the alarmscreen will be displayed. The description of an alarm can be seen by pressing on the specific alarm indicator. The HPAtemperature alarm is activated at 70°C and a soft cut-out occurs at 75°C, until temperature is restored to below 70°C.8.2.2 iPA ANalysis Window (Local Control)Figure 18 RTF Analysis Window - Basic Display Mode (Default) With Instrument Under Local ControlFigure 19 RTF Analysis Window - Basic Display Mode (Default) Under Remote Control8.2.3 iPA Analysis Window (Remote Control)Select DistanceGraph Display ModeSelect DistanceGraph Display ModeNetworkSettingsGeo TagIndicatorTone Powerand SettingsCalibration29© 2017 Infinite Electronics, Inc., All Rights Reserved.
