Operating Manual R&S SMIQ - Volume 1 - Rohde & Schwarz

Test ProceduresSMIQ5.3 Test Procedures5.3.1 Display and KeyboardChecking the displayChecking the keyboard Switch instrument on. The basic menu is displayed after several seconds. Rotate contrast control (lefthand potentiometer below the display). The contrast is varied from dark to bright. Rotate brightness control (righthand potentiometer). The brightness of the backlighting is varied. Press keys and check response at the display.5.3.2 Frequency5.3.2.1 Frequency SettingTest equipment Frequency counter (Table 5-1, item 1)Test methodMeasurementThe frequency setting is checked using a frequency counter whosereference frequency is synchronized with that of the SMIQ. SMIQ setting:- test frequency unmodulated,- level 0 dBm The measured values must be exact within the framework of thecounter resolution.Recommended test frequencies:CW test frequency Module under test Counter resolution839.1, 839.15, 839.5 MHz Digital synthesis 0.1 Hz840 to 940 MHz in 10 MHz steps Step synthesis 0.1 Hz800, 850, 1000, 1100, 1200, 1300, 1400, 1490 MHz Harmonics of summing circuit 10 Hz450.1, 750 MHz Divider and harmonic filter of IQ converter 10 Hz10, 449 MHz Output mixer of IQ modulator 10 Hz1501, 2200, 2500, 3300 MHz Doubler with filters IQCON 10 Hz3750 MHz, 4400 MHz, 5550 MHz, 6400 MHz Frequency extension 10 HzVM test frequencies, max. level500, 800, 1801, 2200, 3300 MHz Doubler with filters IQCON 10 Hz1125.5555.03 5.8E-9