Philips PM 5326 Instruction Manual page 27

3.3.5.2. Multi-purpose instruments
can be used a s indicators of rectified currents of demodulators in AM and FM receivers and a s limiters
with FM receivers and TV sets.
Fig. 3.3-9
Connection to AM, FM demodulators or FM limiter
3.3.5.3. For determining the gain of the I F stage
in AM receivers, the HF signal must be decoupled. This can be achieved by means of a voltage divider
probe (ratio of
10 : 1, for example) with low detuning and damping. The resonant circuit probe,
described before, is also suited.
Fig. 3.3-10 Determination of gain of an AM stage