







i r - 1 



Pulse to 

 Analogue 

 Conversion 









n n n j 



1 *l v d.c. j . 



>^ 



vco 



- 



\ | M .,„_ 



Meters | 



M 







! 





ts 





LTLTLT 





" 



^ 









L 









Dual 

 Overlapping ] 

 Pulses | 





_* 





s 













Calibration 

 Circuitry 





Time- 

 Constant 

 Selection 





Bj 













^ 























i r 





U 





A J 



1 













+ I5vd.c. 



Trans- 

 mitter 



1 r 



^ ,0 

























Antenna 





Signal 

 Generator 





















— " 











I_ 

 r 



. _ §J 









Voltage 

 Regulators 























■> 



n 



sumX 



A/ 







v a.c. 

























r» ! 



_ yj 



L. 



to 5 v d.c. *™* 



sure 

 sducer 





















Tran 



Figure 16. Generalized schematic of onboard electronics (letters 

 refer to enlarged schematics in Appendix) . 



33 



