Frequency Frequency Range: 0.15 MHz to 500MHz Frequency Resolution displayed:100kHz (4 Digit) Center Frequency Range: 0 to 550 MHz Accuracy: ±100kHz Stability (Drift): <150kHz / h Span: Zero span; 50kHz/Div to 50MHz/Div in steps of 1-2-5-10 Accuracy: ±10% Marker Resolution (Frequency):4digits Marker Accuracy: ±(0.1% span + 100kHz) ResolutionBandwidth,RBW(-3dB):20kHz,250kHz Video Bandwidth, VBW: 4kHz, 400kHz SWT (fixed): 23ms      Amplitude Measurement Range: -100dBm to +13dBm Displayed Average Noise Level: 103dBm (250kHz RBW) Frequency Response: ±2 dB (Relative to 250 MHz, ATTN 10 dB) Input Attenuator Range: 0dB to 40dB, 10dB steps Accuracy (reference level): ±2 dB Maximum Safe Input Level Attenuator setting 20db: +20 dBm (0,1W) Attenuator setting 0dB: +10 dBm DC: ±25 V Display Range: 80 dB, 8 Divisions Scale Units: dBm Reference Level: -27,-17, -7, +3 and +13dBm Res. Bandwidth Switching Uncertainty: ±1dB Spurious responses: Intermodulation (3rd Order): 75 dBc (2 Signals, 27 dBm each, Frequency distance>3MHz) Harmonic Distortion (2nd, 3rd): < 75 dBc Absolute Amplitude Accuracy: ±2.5 dB      Tracking Generator (only HM5006) Output Frequency Range: 0.15MHz to 500MHz Output Power Level: -50dBm to +1dBm (in 10dB steps and var.) Output attenuator: 0 to 40dB (4 x 10dB steps) Output attenuator accuracy: ±1dB Output flatness: (150kHz to 500MHz)±1.5dB Spurious Outputs: Harmonic Spurs<20dBc Non-Harmonic Spurs <20dBc Output impedance: (Conn.):50 Ohm /(BNC Female)      Miscellaneous AM-Demodulator Ear Phones Probe Power 6V (Close Field Probes)      General Information Display: CRT 6 inch, 8 x 10 div. intern. graticule Trace rotation: Adjustable on front panel Line voltage: 115 / 230V ±10%, 50-60Hz Power consumption: approx. 20W Operating ambient temperature: 10°C..+40°C Protective system: Safety Class I (IEC 1010-1) Cabinet: W 285, H 125, D 380 mm Weight: approx. 7kg