zamproject
Well-known member
- Joined
- May 11, 2010
- Messages
- 1,502
Hello
I received a B&K 2230 from university clearance.
Obviously the unit was not used since long time, but after battery housing mess (leak and chain connector for the 4x1.5V destroyed) I was able to power it on via an external PSU
I have no idea If the unit still calibrated, and I have none of external B&K generator to check.
Service manual offer a calibration with internal oscillator, BUT I need to know a "Ko" factor of the microphone which is given in the initial documentation for each mic, and I don't have it...
Basically the calibration is done by setting "cal" to internal and adjust meter to read 94dB+Ko
Did someone have any idea of the magnitude of this Ko given with 2230 meters ?
I won't bother for a small factor and just cal to read 94dB, but if the factor can go from -10 to +10 I may have issue...
Best
Zam
I received a B&K 2230 from university clearance.
Obviously the unit was not used since long time, but after battery housing mess (leak and chain connector for the 4x1.5V destroyed) I was able to power it on via an external PSU
I have no idea If the unit still calibrated, and I have none of external B&K generator to check.
Service manual offer a calibration with internal oscillator, BUT I need to know a "Ko" factor of the microphone which is given in the initial documentation for each mic, and I don't have it...
Basically the calibration is done by setting "cal" to internal and adjust meter to read 94dB+Ko
Did someone have any idea of the magnitude of this Ko given with 2230 meters ?
I won't bother for a small factor and just cal to read 94dB, but if the factor can go from -10 to +10 I may have issue...
Best
Zam