The PM5100 has 4 ranges, from 15 Hz to 150 kHz. The output voltage is 1mV to 10V. The output signal is a sine wave. There are two outputs: one with a 600 Ω and one with a 15 Ω impedance. The valve line-up is:
Actually, I didn't plan to buy this generator. It was offered to me by an amateur from whom I bought a Philips transistorised LF generator. It looked in good condition, only the leather of the handle on top was falling apart.
When I tried it, it just worked. So I can use it if I want. But I don't. I like the GM2317 better, and the transistorised PM5126 I bought at the same occasion, is more practical.