hi Chad.
they typically take both (and VGA too).
With SDI, I use a Quantum Data 701A, to set basic levels, then switch over to my QD 780 or Accupel 5000 and HDMI. First thing I do is ensure that SDI matches HDMI. Sometimes you can calibrate 1 input with HDMI then copy them over to the SDI input. ALWAYS VERIFY that you are decoding correctly, RGB, vs 422, (with correct black levels).
THXvideotech sells the Quantum Data 701A. Email sales@thxvideotech.com if youd like a price quote.
