[Boatanchors] HP312B info

[Ispoulin at aol.com]

Good Morning; I just acquired a Hewlett-Packard 312B selective volt meter  
and noticed there is a input probe small male cannon plug on the front panel.It  
is 7-pin Deutsch plug. There are also 2 bnc connectors marked Bridged and  
terminated,that seem to correspond to the input-mode switch .To use this as a  
receiver,Where do i connect the antenna and do i need the input probe?  
Appreciate any info  as i have no manual.  Thanks,Al,W1TUK