Service Manual
AT235
28
4
As of 2020, CIR33 is discontinued as a AD629 accessory. Hence, this information is applicable for previously purchased transducers only
5
Please note that this set-up
does not
refer to DD45 or DD65 v1
CIR 33
Fig. 46
Equipment needed for calibrating the CIR 33
•
Measuring amplifier
•
Acoustical IEC 60318-5 (IEC 126) coupler, fitted with eartip
10
•
Frequency counter
•
Correction values for coupler
From the AUD menu, select Transducer Calibration.
Place the transducer on the 2cc IEC 60318-5 (IEC 126) coupler
(fig. 46)
DD65 V2
Fig. 47
Equipment required:
•
Measuring amplifier
•
Acoustical IEC 60318-3 (IEC 303) coupler
•
Frequency counter
•
Correction values for coupler
•
Spacer for HDA200 to coupler IEC 60318-3 (IEC 303)
From the AUD menu, select
Transducer Calibration.
Place the transducer on the 6cc IEC 60318-3 (IEC 303) coupler
(fig. 47)
