TC reported train encountered wheel slip/slide indication while departing MRB2. No other abnormaliti es reported ~~~~~ 3537 TC reported train encountered WSS departing MRB2. No other abnormalities reported CE:T254(3538) check n found car having W/s/s during final braking at all stations. Wsp Axle1-4 (active).  3537 & 3538 tacho impedance check - OK. Found 1537 BCU wheel diameter setting was incorrect.    Reset 1537 wheel diameter from 797 to 850 - Done.  Chan GF/Alan 43894