Mteroscopte Structures of Wind Waves 
Al 
Signal a Threshold 
Schmitt trigger of as 
Q 
T/H Amplitude "Height" 
T/H Amplitude "Time" 
(a) Pulse Shape and Timing Diagram of Pulses Passing Various Stages of Pulse Conditioner 
TRRIALVIJED DCARHAIIT ~~ 
| ANALYZER-READOUT 
Coincidence 7285Ch | 
G -Channe 
\ ee ——“ Pulse height 
| | '  anaiyzer | 
j A 
: = Oscilloscope; i 
| y x-y recorder; | 
| (when used) or punched tape | 
ee =— : ee 
[ SIGNAL | PULSE CONDITIONING | 
| Photomultiplier tube | CIRCUIT | 
(S-4} =a 
| Q Electrometer | Comporator | 
q p amplifier x 
| 3 free | 
| O | Teack/halder Ephone | 
| omplitten switcn No. | 
| 2 
| | Electronic | 
| l switch No. I 
) ' 
SSS = | t 
| 
| Schmitt 
| trigger | 
voltage i 
power | | 
I 
bakes | 5 psec 5 psec { 
Monostable Monostable 
! T T) | 
1 ‘ 
eae ee ED NG Se Pee 
(b) Block Diagram of Optical Instrument 
FIGURE 4 - ELECTRONICS OF OPTICAL INSTRUMENT. 
1463 
