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The Instek GFG-8219A 3 Mhz Function Generator With Counter output waveforms are Sine, Triangle, Square, Ramp, TTL and CMOS. It has External Voltage Controlled Frequency (VCF) Function, Duty Cycle Control with Signal Inversion Capability, Variable DC Offset Control and a Two-Step (-20dBx2) and Variable attenuator. The Instek GFG-8219A has a built-in 6 Digit Counter with INT/EXT Function up to 150 MHz and INT/EXT AM/FM Modulation. Specifications. Frequency Range: 0.3 Hz to 3 MHz (7 Range). Amplitude: > 10 Vpp (into 50 ohm load). Impedance: 50 ohm ±10%. Attenuator: -20 dB ±1 dB x 2. DC Offset: <-5V to >5V (into 50 ohm load). Duty Control: 80% : 20% : 80% to 1MHz Continue variable. Sine Wave Distortion: <=1%, 0.3 Hz to 200 kHz THD <=35 dB below fundamental in all range (Specification applied from MAX. to 1/10 level). Sine Wave Flatness: < 0.3 dB, 0.3 Hz to 300kHz, < 0.5 dB, 300 kHz to 3 MHz. Triangle Wave Linear: >= 98% 0.3 Hz to 100 kHz, 95% 100 kHz to 3 MHz. Square Wave Symmetry: ±2%, 0.3 Hz to 100 kHz. Square Wave Rise or Fall Time: <= 100 nS at maximum output (into 50 ohm load). Sweep/Rate: 100 : 1 ratio max. and adjustable. Sweep/Time: 0.5 sec. to 30 sec. adjustable. AM Depth: 0 to 100%. AM MOD. Frequency: 400 Hz (INT), DC to 1 MHz(EXT.). FM Deviation: 0 to ±5%. FM MOD. Frequency: 400 Hz (INT), DC to 20 kHz(EXT.). Frequency Counter Range: 0.3 Hz to 3 MHz (5 Hz to 150 MHz EXT.) Frequency Counter Accuracy: Time base accuracy 1 count.
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