Philips PM 5330 Handbuch Seite 83

PM 5330 CHARACTERISTICS
5 - 3
5.4.2.2 Internal Modulation Oscillator
Procedure:
-
Connect oscilloscope respectively counter/timer to PM 5330 MOD OUTPUT socket
(rear panel)
-
Set instruments to input impedance 1 MSS.
Generator settings:
RF ON, RF frequency 15 MHz, Vernier OFF, Modulation ON,
AM depth (m = 30 %) , Level -7 dBm, AM internal mode 1 kHz
Test result: Output voltage (pp) = 1 V ±100 mV
Frequency
= 1 kHz ± 30 Hz
5.4.2.3 Amplitude Modulation (AM), external
Procedure:
-
Connect function generator PM 5132 to PM 5330 MOD INPUT,
apply sine wave signal 1 kHz, 0.8 V (pp)
-
Set modulation analyzer to P~P
Generator settings:
RF ON, Frequency 15 MHz, Vernier OFF, Modulation ON, Level -7 dBm,
AM external mode
Test result:
m = 80 % ±5
5.4.2.4 Frequency Modulation (FM), internal
Test equipment:
- Modulation analyzer, e.g. Rhode &Schwarz FAM/B resp. FMAB
- Function generator, e.g. PM 5132
Procedure:
-
Connect PM 5330 RF OUTPUT to modulation analyzer
-
Set analyzer to filter bandwidth 30 Hz - 20 kHz and P2P
Generator settings:
RF ON, RF frequency 95 MHz, Vernier OFF, Modulation ON, Level -7 dBm,
FM internal 1 kHz (Deviation ±25 kHz)
Test result: Deviation ±25 kHz ±0.5 kHz