BRUEL & KJAER 2305 - Specification

when the Transformer has an open INPUT terminal and is located in th e
most unfavourable position in the field.
The transformer ratio 1:1 can, if necessary, be adjusted by a potentiometer
ADJUSTMENT accessible at the boltom . The Transformer is corre ctly pre· '
adjusted at the factory .
Int. Load
Ext. Load
Input
output
16 182(
Fig . 4.11. Diagram of Transformer circuit.
Frequency Range:
Transformer Ratio:
Input Impedanee:
Balance: (approx.)
SPECIFICATION
10 Hz (cls)-20 kHz ( kc fs ) within ± 0.2 dB
1 : 1
20 kil approx . with INPUT IMP. in position
"20 kil"
600 Q± 2 % with INPUT IMP. in position
"600 Q" or "600 Q ~ "
Common mode signal rej e ction :
(Measured in phantom circuit)
80 dB at 200 Hz (cis)
60 dB at 2 kHz (kcfs)
40 dB at 20 kHz (kcfs)
Maximum Input Voltage: 1.6 V f Hz ( ci s) up to a ma ximum of:-
100 V with INPUT IMP. in position " 20 kil"
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