ey lower than, betzeen, or greater than the above mentioned time base points, If lower, the bi-directional switch is stepped "up" a decade (which may be a scale~of-ten division of the upper c ocade of a channel or a chengo of channel), If greater, the bi-directional switch is switched "down" a decade. If between, no action occurs, 3.3.4 Doso Rate Computer This section receives a channeled pulse train from the channel Identification Section, A scale«of=two chain driven in line synchronization is started by each pulse after a fixed time delay, and is stopped by the succeeding pulse, The binary pattern then has stored a count of timing oscilletor cycles and adds to n divider (by relcying) a pattern of parallel resistors proportional to the binery count, so thet the bottom conductsnce of the divider is proportional to the whole pulse separation time, The divider then presents to a potentiometer recorder a voltage proportional to inverse pulse separation time and thus to dose rate, The recorder chronograph pen is signalled by the channel Identification Section at docade chenges end indicates by chart margin merkings the scale factor, A similar relay bank sets up another divider net which presents to another recorder a voltage proportional to the maintisse of the logarithm of dose rete vith cherecteristics obtained fron the Channel Identification Section, 3.3.5 Corputer The Dose Computer employs four banks of telephone minor switches: a l0-switch cescade counting bank, » 6eswitch trensfer bank, a 3-switch linesr readout bank, and a S5eswitch logarithmic read- out benk, The counting bank is fed on switches 1, 3, 5 ond 7 by data readers reading channels 4, B, C and D end thus sums dose as a count of Channel 4 base increments, The transfer bank selects decade scale factor so as to confine the dose summation to the pen range of the dose recorder, The linear rendout benk accepts the dose summation from a level of the counting bank determined by the current level of the transfer bank; the whole bank is in turn stepped up as required by the readout bank, The readout bank sets up a resistance divider which feeds a voltage to the linear dose recorder proportional to the count on the readout bark and so to the appropriately sceled total dose. Three Significant figures are avnileble. The logarithmic readout bank accepts dose summation in the same wey as the linecr, but sets up a logarithmic divider which presents o voltage to the recorder proportional over any five decades of deta to the logarithm of total dose, 3.3.6 Function Recorder Time Base Drive an ST. > Ton LOViS fr AL One operation recorder has bcen converted to serve as a logarithmic time plotter. A linear digital tine base running in pover 5 (OG