° .:_ 3 ¸ : ': _ H( L ..,
"/
6. Hold tile 215-35 Poak-Ilold Meter (215 I_lus PH-35) ill the
sl_nle Wily [IS Lhe 215 when lllIl[¢]llg nleflsttrenlents. (Sea inliL_'tlctiol'_s
far 215 Sound Level Meter.)
7, Aftt_r making a nlozLstlrenlellt, record the result and depress
the ro._o[ ])Litton to prellare for the next illt._lSurenlent. If the illlptll-
sivo SotInd hlts cll|lsed the m_2t_.r to go beyond full scale, press the
+lOdB button on tile si¢le of the instrunlent and take the reading
again, addillg 10dB to tile indicated reading.
NO'rl,_
When using tile peak-hold module, sot the weighting sel* i
ector on the 215 to "A" scale or "LIN", depending on
the meastlroment being nlade. Ustl_lIly "_." sgll]o is llsed
for FAST peak-hold, while LIN response is used for
OSIIA IMPACT. 'I'h[_ peak.hold will not functiml oil the
EXT. position.
CALIBRATION
The PH-35 is calibrated lit tile foolery and with proper care
should retain its accuracy. It is recommended. Iiowt_yer. as wJth all i
sound nlelisttrhlg instrtlrtlents, that, the calihration I)e chocked ])eriod-
icaIly with a sound calibrator. Proceed [Is follows:
I, Check the calil)ration oil the 215 Sound Level Meter as
outlined ill the 215 instructimls, with tile weighting selector set
properly for the nlelLstlrenlent to be m;ide.
2, Attach tile PH-35 to the 215, If you are using tile CA-12,
110dB Calibrator, set tile dB RANGE switch oil the 215 to i00dB
and the ON-OFF-BAT switch to ON,
3. SoL mode switch oil PII-35 to either I,'AST or I[':C {Not
IMPACT). Depress and hold the RESET I)utton, hlsert the micro-
phone into the calibrator coupler [is in the 215 calibration procedure.
The reading on tile PI 1-35 shoukl be full sc[lle (110dB) as on the 215.
NOTE
If the mode switch is set to the IMPACT position, tile
meter will read 3dB higher than tile FAST or IEC nlode
because tile absoIltte l+etlk level is being read rather than
the rms valtle.
,I. It there is stone wlriaLioa in tim readings, insert the smaIl
screwdriver in the hole o,1 tile right side of tile PII-35 module helow
tile +lOd B hutton, and slowly adjust tile slotted pot until the PI 1-35
reading is tile same as tile 215 residing.
5, The 215-35 is now calibrated and reacly for use,
22
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