. Basic methods for the calibration of sonar equipment. 140 COMPUTATION FROM TEST DATA LOG QJy^JieVnj'^ TTCT STATION I WiTTM; PROJECT Nn OOP nATF /Z- Zb^V-f rnpiF< TO STATION FILE AND N. Y nFRrF Z _SHEET NO. H_ IMD£)t TEMP TRANSMITTING | FREQUENCY-KC RECEIVING [] Run No TIME CM- AVAIL POWER SINGLE, RANGE, or MID BAND BjndW ^9 ^f^' za ZSO so 2 /? 8L B ff 9W fK%10 " " " " " 5-9o />T} 6 QB*III e-^ " " 5f- ^ CO G C zzr 9-50 â C4>-1^. T^VK^ 4-^^ O-IIO ^ /^ 20 V-K CI R C ir 9:50 o^M= a^M/t U^n II ^ /y 20 S R BL D 3r m-so 2to QB'*lll F^ /oo Ii5 ICO 10
. Basic methods for the calibration of sonar equipment. 140 COMPUTATION FROM TEST DATA LOG QJy^JieVnj'^ TTCT STATION I WiTTM; PROJECT Nn OOP nATF /Z- Zb^V-f rnpiF< TO STATION FILE AND N. Y nFRrF Z _SHEET NO. H_ IMD£)t TEMP TRANSMITTING | FREQUENCY-KC RECEIVING [] Run No TIME CM- AVAIL POWER SINGLE, RANGE, or MID BAND BjndW ^9 ^f^' za ZSO so 2 /? 8L B ff 9W fK%10 " " " " " 5-9o />T} 6 QB*III e-^ " " 5f- ^ CO G C zzr 9-50 â C4>-1^. T^VK^ 4-^^ O-IIO ^ /^ 20 V-K CI R C ir 9:50 o^M= a^M/t U^n II ^ /y 20 S R BL D 3r m-so 2to QB'*lll F^ /oo Ii5 ICO 10-Co -Tfl 6 3Ag9 f?o' 2(,t 250 Â¥â 6X R R £ 3a: V7I <ofo '0:fS M c£4^ t^ ^. lArr ^ â â â 0-/50 A IS 0 7X R G £ ^i-TV* -r'dzM^ y^iSm- â /J5« Vio 0-/SD P lf< â 0 ff / ' Utc rto .«) 'RH £sPon; kruz m: rN, a D-Pa rrERh pM jMhn It No SE. NA-NO SE AG'TAT N IPR OJ CUR, I -PRC J VLT ,3 & 2 PROJ R Figure 4. Sample log sheet covering calibialioii of QB No. 111 tiaiisducci. age was applied to the receiving line troiii a very low impedance, ohm, as shown in (a) of Figine 7; this same \oltage was then applied to the receiving TRANS LINE Z =135 OHMS. BATTERY SUPPLY -e- T REC LINE CIRCUIT FOR li=135ClHMS 3A HYOROPHI 3A HYDROPHONE Figure 5. Circuit used in obtaining reference receiving response chart. 3A89 Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Office of Scientific Research and Development. National Defense Research Committee. Washington, D. C.
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