IE-33 Signal Generator IE-33 INTRO OVERVIEW KEY FEATURES Calibration RTA  -LF Zoom / Frequency Detect  -Subtract / (F)STC / NIC  -NC / NR  -Averaging  -Sampling / Memory  -PC Transfer / IvieXLS SPL Monitor Seat-to-Seat Strip Chart Polarity Scope Signal Generator Volt Meter Time-Based Measurements  -Strip Chart  -RT-60  -Delay SPECIFICATIONS ACCESSORIES FAQ DOWNLOADS The IE-33 has a built-in signal generator capable of generating sine, square and triangle waves along with pink and white noise. Output is via the iPAQ's 3.5mm headphone jack. The scroll bard allow a user to adjust frequency.