Hi there
This particular type of accelerometer module gives analog voltage output corresponding to X, Y and Z axis' orientation. Its really simple to get these voltages over a CRO, just connect the positive part (red one) of CRO probe-wire with the output of module and make their ground common by connecting black part of CRO probe-wire to GND pin of module. After making some adjustments with the knobs, in CRO, you'll be able to see the analog voltage over the screen.
Good luck 