AM_FM_Signal_Generator 电路图.pdf

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1、AM/FM Signal Generator Type PGS-21 digital frequency readout - frequency range 64 kHz - 130 MHz - output voltage 64 kHz - 30 MHz range 1 fXV -1 V 30 M H z-130 MHz range 1M V -0.5V - AM and FM modulation - internal modulation frequencies 400 Hz, 1 kHz and 4 kHz - external AM modulation 20 Hz - 20 kHz

2、 external FM modulation 20 Hz - 60 kHz maximum modulation depth 90% - maximum deviation 100 kHz - composite stereo modulation capability digital frequency measurement of external signals in 20 H z-130 MHz range APPLICATIONS The type PGS21 Signal Generator is a laboratory-grade instrument providing a

3、 source of sinusoidal voltage,amplitude- or frequency-modulated, with adjustable amplitude and frequency. The output voltage can be amplitude-modulated in a frequency range from 20 Hz to 20 kHz, or frequency-modulated in a frequency range from 20 Hz to 60 kHz, from an external generator. The output

4、can also be frequency-modulated by a composite stereo signal. The instrument enables external signal frequency to be digitally measured in the range from 20 Hz to 130 MHz. The PGS-21 Generator is intended for testing and alignment of electronic circuits in the frequency range from 64 kHz to 130 MHz.

5、 RadioFans.CN 收音机爱 好者资料库 SPECIFICATIONS Frequency Range Accuracy Stability short-term long-term Voltage Output voltage /open circuit/ stepwiselv adjustable in 10 db steps, and continuously, within each 10 dB range, in frequency ranees 64 kHz - 30 MHz 30 M H z-130 MHz Output voltage setting accuracy

6、when adjusted for meter FSD 64 kHz - 30 MHz 30 M H z-130 MHz Source impedance VSWR for voltages above 100 mV Voltage level change when tuning from 1 MHz reference Nonlinear distortion AM MODULATION Rated modulation depth Modulation depth setting accuracy External modulation frequency range Maximum m

7、odulation frequency to carrier frequency relation Carrier frequency 64 kHz - 125 kHz 125 kH z- 250 kHz 250 kH z-500 kHz 0.5 MHz - 1 MHz 1 MHz - 130 MHz Modulated output signal envelope distortion FM MODULATION Rated deviation range Frequency MHz 65-130 32-65 64 kHz - 130 MHz in 11 subranges 0,00591

8、0.01% per 15 min 0,1% per 3 hours 1 AtV -1 V 1 /V-0,5 V 1 dB - 1 (JV 1,5 dB - 1,5 MV 50 Ohms 1,5 1 dB 5% 5 - 90% 10% with respect to FSD 20 H z-20 kHz Maximum modulation frequencv 3 kHz 5 kHz 10 kHz 15 kHz 20 kHz -5 7-6 FrekHznCy 500-1000 250-500 125-250 64-125 K i- 7 t9i-lO Deviation setting accura

9、cy External modulation frequency range Maximum modulation frequency- - carrier frequency relation Carrier frequency relation 64 kHz - 125 kHz 125 kHz - 250 kHz 250 kH z-500 kHz 0,5 MHz - 1 MHz 1 MHz - 2 MHz 2 MHz - 4 MHz 4 MHz - 8 MHz 8 MHz - 130 MHz Modulation distortion Modulation Voltage Generato

10、r Modulation frequency Frequency accuracy 15% ofFSD 20 Hz - 60 kHz Maximum modulation frequency 2 kHz 4 kHz 7 kHz 10 kHz 14 kHz 20 kHz 30 kHz 60 kHz 2% with maximum deviation Stereo Modulation Stereo encoder drive modes: - Lf. signal from internal or external generator applied to L channel input, -

11、Lf. signal from internal or external generator applied to R channel input, - Lf. signal from internal or external generator, having identical frequency, level and phase, applied to both L- and R channel inputs simultaneously, - Lf. signal from internal or external generator, having identical frequen

12、cy and level but opposite phase, applied one to L-, the other to R channel input simultaneously, - l.f. signals from external generator, having different frequencies, applied to L- and R channel inputs, - 19 kHz pilot carrier signal Pilot signal frequency Pilot frequency accuracy Maximum deviation b

13、y stereo signal Deviation by pilot signal Channel separation at 1 kHz Spurious Effects Amplitude modulation effect on frequency Frequency deviation with modulation switched off 19 kHz 2 Hz 50 kHz. 5 kHz - 35 dB 15% Frequency deviation due to the presence of AM Amplitude modulation with modulation sw

14、itched off Amplitude modulation due to the presence of FN RF radiation. A voltage induced in coil, 2 turns 25,4 mm in diameter, spaced by 25,4 mm from the generator, measured with a microvoltmeter having 50 Ohm internal resistance with frequency counter on with frequency counter off External Generat

15、or Frequency Measurement Measurement nngc Gate time Measurement accuracy Input voltage 100 H z-5 MHz 20 Hz - 130 MHz Standard /clock/ frequency Standard frequency stability Frequency display Ambient Temperature Range Supply Voltage Power consumption Dimensions /incL parts protruding beyond cabinet/

16、Weight 0,005% 0,001% of minimum subrange frequency 0 ,02% of minimum subrange frequency 2% 5% 3/JV 1 MV f =20 H z-130 MHz t =1 ms, 10 ms, 100 ms, 1 s e /autoranging + . , + 1 st x fx- g fst=standard frequency A f = relative error of standard f t frequency generator 100 mV - 1 V 300 mV - 1 V 1 MS f 5

17、-10 per 24 hours 7 - segment +5 +20+40C 220V - 10%; 50 Hz 60 VA height 142 mm width 446 mm depth 455 mm 15 kg 400 Hz, 3% 1 kHz, 4 kHz The manufacturer reserves rights for changes in above specifications after development of prototypes. Manufacurtr: Zakad Opracowa i Produkcji zopan Aparatury Naukowej Z O P A N 03*301 W araw a, ul. Salingradzka 29/31 4. MEIRNEX TT- FOREIGN TRADE ENTERPRISE “METRONEX MYSIA 2, 00-950 WARSZAWA. POLAND P.O. BOX: 198, TELEX: 81 44 71 PHONE: 110-371 Ltd. RadioFans.CN 收音机爱 好者资料库