Philips PM5324 Instruction Manual page 40

40
Table 2 Checki ng table freque ncy modu lator
S cale pointer
Button M Hz
t o ( M H z )
( 802/. . )
( i ndicated sca le)
pressed
. 4 -
. 5
1 0.3 - 1 1 . 1 1 0.7
1 0.3
1 1 . 1
75 - 1 1 0 96
7 5
1 1 0
3.5.9. C H E C K I N G TH E M O D U L A T I O N
Check the modu lation modes. accord i ng to table 3.
Table 3 Checking table for a. m . and f. m .
Sca l e poi nter
Press button
M H z t o mark
(802/ . . )
. 4 - . 5 0.46
1 0. 7
1 0. 3 - 1 1 . 1
-
96
30 80
of scale
7 5 - 1 1 0
7 5 - 1 1 0 97
3.5.9. 1 . Checking with a modulation depth- and frequency sweep measu r i ng i n strument
- Con nect the measu ring i nstrument - e.g.
- Supply a signal of 1 k H z , 2 V r . m .s. via connector L F I N
- Determ i n e the modu l ation data accord ing to table 3 a nd compare the resu lts with the l i m i t val ues
If such a measuring instrument is not ava i l able check accord i ng to 3 . 5.9.2 a nd 3 . 5.9.3
3.5.9.2. C hecking the frequency modulation according the principle of frequency ma rks
- Check the data of l i nes 5,
- External modu lation voltage 2 V r . m . s .
F requency sweep
L'1
2 f
kHz
0.46 40 ± 1
0.4
� 25
0 . 5 <, 5 8
600 ± 1 5
� 5 1 0
<, 690
600 ± 1 5
� 2 1 0
<, 1 1 1 0
Modul ation
Press mode
button depth
(803/ . . ) %
AM I NT . 30 ± 5
AM E XT. > 80
AM I NT. 30 ± 5
AM E XT. > 80
FM I N T.
FM EXT.
AM I NT. 30 ± 1 0
AM E XT. > 80
AM I N T. 30 ± 1 0
AM E XT.
> 75
FM I N T.
F M E XT.
type 2006 Bruel
6, 1 1 and 1 2 of table 3 in accordance with
Adj usti ng Asymmetry
(L'lf l - L'lf2 )
el ement
on unit 1 k H z
<, 7
607
check
<, 50
609
check
<, 1 00
608
check
F req ue ncy
sweep L'l f
k H z
25 ± 5
7 5 ± 1 5
2 5 ± 5
7 5 ± 1 5
&
Kjaer - to output H F OUT
the description g iven in sub-para 3 . 5 . 8 . 2