2.3.4.2.
Checking and adjusting the band·pass curve of
an
f.m. receiver
2.3.4.2. 1 .
Connection of the measuring instruments
( F ig.
16)
- Connect the i ndicator to resistor R3 of the demodulator via a
O.l·Mn
resistor
- Connect the Y·input of the oscilloscope to resistor R3 via a
O.l-Mn
resistor
- Connect the X-i nput of the osci l loscope with connector
1
kH z/SWEEP OUT of the P
M
5324
- Set the h.f. generator to
10.7
MHz
- Depress button WOB.
- Set the controls of the oscilloscope 'for horizontal and vertical sh ift and horizontal ampl ification i n such a
way that the l i ne on the screen is symmetrical with respect to the vertical central axis of the graticu le.
(AB
=
B e, Fig. 1 7). Poi nt B i n the screen will now represent a frequency of 1 0. 7 M H z .
During adjustment, this setting may not be changed.
II
I
II
If
1
1
]:3 1"
PM 5324
1 kHz/SWEEP
OUT
RF
OUT
Fig.
16.
Dynamic adjustment of an f.m. receiver
Fig.
17.
Frequency scale
Indicator
(e.g. PM 2'031
D
PM 3110
MA,8211
���-----
200kHZ ------���
Fig.
18.
IF band·pass curve
23
Summary of Contents for PM5324
Page 1: ...HF Generator 100kHz 110MHz PM5324 9452 053 240 1 9499 450 05511 730801 1 01 ...
Page 15: ...14 Fig 4 Front view Fig 5 Rear view ...
Page 43: ...Fig 33 Front view with item numbers Fig 34 Bottom view ...
Page 44: ...44 Fig 35 Top view Fig 36 Left side view ...
Page 45: ...45 0 0 0 0 1 ji I I MAB225 Fig 37 Scale dri ve n ...
