Calibrating for two sources - BRay and Directv. Two calibrations or just one?

When I last had my SharpVision MKII projector calibrated it was done by an ISF professional who used his calibration disk on my BR player. I assumed this would be very accurate for BR movies but always wondered if it was accurate for my Directv signal. Are the two incoming signals technically different so that two separate calibrations are needed or are they close enough so that only one calibration is necessary?