BK Precision 5MHz, 1 Channel Function Generator with Digital Display, Model 4011A [Boletos de turismo] [manuscrito], 1943 Memoria Chilena, Biblioteca. The BK Precision Model 4011A Function Generator is a versatile signal source which combines several functions into one unit. Additionally, the instrument provides the added convenience of a built in frequency counter. This permits more accurate determination of output frequency than is possible with a simple calibrated dial. Coarse and fine tuning controls permit precision settability of the output frequency. High stability assures that the output frequency does not drift. Features: 0. 5 Hz to 5 MHz Sine, Square, Triangle, Pulse, & Ramp output Coarse and Fine tuning 4 digit LED display Variable duty cycle Variable DC offset Variable amplitude output plus 20dB attenuator 20Vpp output into open circuit (10Vpp into 50 s) cUL certified Specifications: Frequency Characteristics Waveforms: Sine, Square, Triangle, Pulse, Ramp Range: 0. 5 Hz to 5 MHz in 7 ranges Resolution: 4 digits Tuning Range: Coarse, 10: 1 Fine 5% of coarse setting Variable Duty Cycle: 15: 85: 15 cont. variable Operating Modes: Normal, VCG Output Characteristics Impedance: 50 10% Level: 20 V p p open circuit, 10 V p p into 50 Amplitude: Variable, 20 dB range typical Attenuation: 20 dB 1 dB DC Offset: Preset 0. 1 V typ Variable: 10 V open circuit 5 into 50 Distortion: 3% @ 1 kHz Flatness: 5% (. 45 dB) Symmetry: 0. 5 Hz to 100 kHz 2% Risetime (Into 50 ): 20 nS Linearity 98% to 100 kHz, 95% to 2 MHz TTL Output Level: 0. 8 V to 2. 4 V Rise Time (0. 8 V to 2. 9 V): 20 nS Duty Cycle: 50% typical CMOS Output Maxi. Frequency: 2 MHz Level: 4 V to 14 V 0. 5 p p cont. variable Rise Time: 120 nS Input VCG Input Voltage: 0 10 V 1 V causes a 100: 1 frequency change Impedance: 10 k 5% Frequency Counter INT Accuracy: Time base accuracy 1 count Time Base Accuracy: 10 PPM (23C 5C) General Display: 4 digit LED AC Input: 120 230 VAC 10%, 50 60 Hz, Internal jumper selectable Dimensions (H x W x D): 4. 5 x 11. 75 x 10. 375, (114 x 298 x 264 mm) Weight: 4 lbs, (1. 8 kg)