BRUEL & KJAER 2010 Instructions And Applications page 55

SELECTIVITY CONTROL position Automatically selected bandwidth
(Hz)
1000
Hz 100 316
1000
316
Hz 31.6 100
316
100
Hz 10
31.6 100
31.6 Hz 3.16 10
31.6
10 Hz 3.16 3.16 10
3.16 Hz 3.16 3.16 3.16
EFFECTIVE AVERAGING TIME
Automatically selected averaging
selected
time (sec.)
0.1 sec 1 0.3 0.1
0.3 sec 3
1
0.3
1 sec 10 3 1
3 sec
30 30 3
10 sec
100 100 10
30 sec 100 100 30
100
sec 100 100 100
Switch-over frequency Hz
(x1, log scale)
200
2K
Switch-over frequencies xO, x 1 and x 10 according to range.
Table 5.4. Selected EFFECTIVE AVERAGING TIME and BANDWIDTH
with 8 & T PROGRAM selector in position "8 & T Var. 4"
The actual bandwidth and effective averaging time in use at a particular
instant are indicated by the appropriate light in the cluster surrounding the
switches. The switch-over frequencies are indicated on the scale by black
spots, and are separated by half decades for programmes 1 and 2. Six
frequency ranges are defined as follows.
P
1
2Q- 63
p2 63- 200
p3
20Q- 630
p4 630- 2000
P
5
200o- 6300
p6 630Q-20000
The ranges given are for the switch position "log x1."
For programmes 3 or 4, the switch-over frequencies are separated by a
decade.
Programme 3 combines the ranges P
2
and P
3
and alsoP
4
and P
5 .
This
gives a total of four ranges.
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