Since the total conversion time per event is about 318 m s the sample and hold circuit must hold for about 1.5 m s. The sequencer selects the sample and hold voltage to be analyzed and activates the appropriate linear gate. The sequencer timing is shown in figure 3. The requirement for redundancy mentioned earlier adds complication to the experiment. To reduce this impact it is desired to combine the redundancy implementation with a power switching circuit which reduces the average power dissipation of both sets of redundant circuits to essentially zero.
Volts are presently available for experiment power.
Special voltages can be made available if necessary. Schedule A flight parts order will be placed on July 1, 1974. It is desired that long lead items be defined by then. Furthermore, an order will be placed for parts which are expected to be used in large quantity. The tables below show the preferred resistor value guide.