An ink supply system for an ink jet printer, particularly a continuous ink jet printer, has a docking station where one of more disposable cartridges of ink or solvent are releasably connectable to the printer. The feedblock has a flow adjuster comprising a plurality of independently rotatable adjustment segments. The integration causes the portions of the cross correlation corresponding to the user subchannels to average substantially to zero, so that the pilot channel signal correlation is the primary contribution to the signal used to characterize the channel to establish the coefficients of the adaptive filter for the receiver. The phase comparator compares the first divider output signal with a first reference signal during the transient recovery duration. In response to receiving the inquiring device BD_addr, the master device provides the inquiring device with an AM_addr. The gate and drain of the JFET are coupled to the interface bonding pad and the source of the JFET is coupled to the substrate.