Doepfer

Hi
I've just fired up my new A-156 Quantiser module for the first time.
Can anyone help me get this running please ? - I plugged into the CV-
in socket an output from a VCO, and plugged the CV-out socket into my 
mixer without any other stuff connected. I took it from the brief 
desription I found on the web, that I should get a quantised signal - 
All I get is a sound like from a ring-nodulator. If I tune the 
frequency up and down I can hear it rising and falling in the middle 
of a lot of noise and ring-mod-like harmonics - but no quantisation. 
The same applies when I plug it into Quantiser 2. With the lack of 
any instructions I'm a bit puzzled. Is this module faulty I ask 
myself. Can anyone tell me some simple patches to test it before I 
start to panic ?
Thanks - 
Richard