Bird Technologies 4331 - Manual (Page 53)

Maximum Counterclockwise
Frequency (MHz) Sensitivity
(Fully Clockwise) 4 Full Turns
From Max.
Position 7 Full Turns
From Max.
Position
2 69 (Approximate dB
attenuation) (Approximate dB
attenuation)
10 57
25 46
50 42
75 39
100 36
200 31
300 38
400 34
500 30
600 29.5
700 29
800 28.5 36
900 28 35.5
1000 35
Note: It is important to decouple the RF sampler as indicated above for
frequencies above 200 MHz. The basic specifications of this instrument will
be maintained with the above settings for the RF sampler. Decouple or turn
counterclockwise beyond the above settings as much as possible, when
possible.
Table 1
Model 4431 Coupling Data
Maintenance
39