Table of Contents
Advertisement
When using the Level Recorder Type 2305, or 2307 with the calibrated
recording paper QP 1124, the relationship between paper travel and fre-
quency indication, f Hz is:
x
=
50 log
1 0
(f/1 0)
where x is the distance in mm travelled from the 10Hz line.
Therefore:
dx
df
50
21.7
=
-f- log
1 0
e
=
-f-mm/Hz
The scanning speed
S
=
P/(dx/df) Hz/sec
where P is the paper speed in mm/sec.
u
el
"E
E
-g
Q)
a.
(/)
.....
Q)
a.
co
a..
3
E
3.10-
1
::J
E
·x
~
10-
1
3
.10-
2
I
I
3.10-
4
I
2 3.16
1
1o 20
6 .3
(4)
Analysis Frequency Limit (Hz)
171464
Fig.9. 1. Selection of maximum paper speed for less than 5% statistical error
83
Advertisement
Table of Contents
