Wavetek 143 Function generator 20 MHz.
The Wavetek 143 Function Generator has a bandwidth of 0.0001Hz to 20MHz (10 ranges); Waveforms: sine, square, triangle, positive square, negative square, TTL sync pulse and DC. Step attenuator accuracy: 0.3 dB per 20 dB step at 2 kHz.
Function Output: Sine, Square,Triangle selectable and variable to 30Vp-p (15Vp-p into 50Ω); Offset: ±15Vdc (7.5Vdc into 50Ω), 80db attenuator.