[Collins] Collins filters...

[Pete Williams]

  G'day.... I'm doing filter response curves of a selection of Collins stand
alone  mechanical filters ---- 250, 500 and 455kHz  using my HP
8601/8601Asweeper combination.
Display is on a oscilloscope via a diode detector.
I would appreciate knowing how best to terminate and or resonate  input and
output to achieve a more realistic response......a non terminated
input/output shows ringing which doesn't appear to be  function of too fast
a scan rate.
Collins must test them... question is how   !
Thanks 
Pete VK3IZ