The AV-151A series of high-voltage function generators allow sine, square, and triangle waveforms to be generated at amplitudes to +/- 500V and frequencies to 3 kHz, into loads of 100 kilohms and higher.
VOUT (max): ±500V
Frequency: 0.3 Hz - 3 kHz
Impedance: ≥ 100kΩ
Max. Gain: 250