Rane BB 22 handleiding
Handleiding
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BB 22 Application Information
Conversion Ratio
e casual observer would think to convert -10 dBV to +4 dBu, you would
need 14 dB of gain. e casual observer would be wrong. You only need 12
dB of gain. e reason is not only do you change levels, you also change refer-
ence levels—from dBV to dBu. e rst (dBV) references everything to 1.0
volt, while the second (dBu) references everything to 0.775 volts (this comes
from the old power reference of 0 dBm, which equaled 1mW into 600 Ω,
which equaled .775 volts).
Driving Impedances
Some people wrongly feel you cannot use a transformer to convert between
-10 dBV and +4 dBu because of low impedances. is is not a problem as long
as you use them to interconnect equipment with at least 15k ohms input imped-
ance. Since most professional products have input impedances of 20 kΩ or
greater (50k and 100 kΩ are not uncommon), this should never be dicult.
A 15 kΩ load winds up looking like 1 kΩ to the equipment with the -10 dBV
output (due to transformer action). is may seem excessively low, but is not
in practice. e maximum transformer output level of +24 dBu occurs with
an input level of +10 dBV, which equals 3.16 volts. And 3.16 volts driving 1
kΩ only requires 3.16 milliamps, which is a very modest requirement for any
-10 dBV equipment to deliver.
Wiring
e BB 22 follows AES/ANSI/IEC standards of pin 2 positive and pin 3
negative. Note the shields (commons) of the RCA jacks are not tied together.
is provides better ground isolation of the unbalanced units. A positive sig-
nal applied to the tip of the RCA jack causes a positive signal to appear on pin
2 of the XLR, and vice-versa if signal direction is reversed.
Signal Direction
Signal can be converted through the channels either direction. e only prob-
lem arises in the gender of the XLR connector. e solution requires same-sex
XLR adaptors or special cables.
WARNING: is product may contain chemicals known to the State of
California to cause cancer, or birth defects or other reproductive harm.
Bekijk gratis de handleiding van Rane BB 22, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Rane |
| Model | BB 22 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 2463 MB |
