BRUEL & KJAER 2209 - Page 47

dB
/
-2
f---f-
t--r-
-,/
1/
c.i
t--/ l -~~.,
1----- Q. ....
,,
~; "/.
r--
k
kfl
~
8. -4
Kl
a:
~ -6
· ~
~ -8
I ,//
1111.'
-10
Ill~
1111
-12
....
,
!-'
,
I
J.~
'(~
IJ
"
r
~ - ~
~ - ~
~
~~r-
It)
,,
: r-
~
IIIII
_ll
IIIII ~I
r1111 I II
1001'
1m
Impulse Duration (sec.)
,
10m 100m
172087
Fig.4.23. "Peak Hold" response of the meter showing the optional
responses for the "Peak Hold" mode
c
(nF)
500
400
300
200
100
70
50
40
30
20
~
~
/
v
/
~
"
~
v
~
/
~
v
~
/
~
v
"
'(
4 5 (m sec)
172086
Fig.4.24. Optional Charge Capacitor vs. Time Constant, for "Peak" rectifier
.. 0.2
0.5 0.4 0.5 0.7
2
3
45