At 6/30/2008 08:53, you wrote: >The pad is only used during testing to isolate mismatch between the >signal generator and spectrum analyzer and the device under test - not >to be left in permanently. At WACOM it was standard practice to use a >10 dB pad between the test equipment and the device under test. This is
...what I typically use. I tried removing the pad on my spectrum analyzer's input after tuning up a 440 pass can, & it pulled the pass response enough to add about half a dB of loss to the target frequency. The tracking generator input doesn't pull as badly, but it's still noticeable. Bob NO6B
