A multicarrier signal, which includes a temporal succession of symbols formed by a set of data elements, each of said data elements modulating a carrier frequency of the signal. The strip of material includes an offset portion formed on each end. Also provided is a pharmaceutical composition that comprises a compound of general formula, wherein A is CH or N, R1, R4 and R5 are independent from each other H, an aliphatic group, an alicyclic group, an aromatic group, an arylaliphatic group, and an arylalicyclic group comprising 0-3 heteroatoms. The engagement element can then enter into engagement with the bar when the holder forms different angles with the latter and constitutes a support for the holder which retains the latter in an angular position occupied relative to the bar. Thus operation of the pump may be reprogrammed, for example, to change the calibration factor or the operation mode or to change irrigation depending on the patient group to undergo surgery. The device further includes a control circuit which controls the potential of the bit line connected to the memory cell from which the binary data is read, in accordance with a result of error correction of the binary data.