Unconditionally skip the next half-words.
The 4-bit SRC2 field contains the Skip Length, a signed integer (between -8 and 7) that indicates how many half-words must be skipped (from the instruction's opcode address).
Because it is unconditional, the SRC1 field is ignored, as well as the optional immediate field.
This is one of the instructions of the SKIP group, see also : SZ/SNZ, SO/SNE/SNO/SE, SS/SNS.