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In Poland we have manufacturer of those: http://www.ambm.pl/index.php/urzadzenia-kontrolno-pomiarowe/dd1a.html
Freq range:: 0.1Hz-160MHz
Tuning step: 0.1Hz, 1Hz, 10Hz, 100Hz do 10MHz
Output amplitude: 50R/10k: 1mVpp ÷ 1Vpp / 2mVpp ÷ 2Vpp
Tuning step of amplitude: 1mV, 10mV, 100mV lub 0.5, 1, 3, 6, 10dB
Inequality: max -1dB / -4dB
Freq accuracy: -3...+5 ppm
Output impedance: 50R +/-10%
Artifacts and noise: 0.1Hz ÷ 20MHz: < -55dB
(related to 1Vpp / 50R) 20MHz ÷ 100MHz: < -45dB
100MHz ÷ 150MHz: < -40dB

It is AM/FM modulated 470Hz, FM deviation can be adjusted from 1kHz to 50kHz in 1kHz steps.

Nice piece of equipment, I own one and I like it a lot.
Mike

[QUOTE="sp5it, post: 442436, member: 10249"] In Poland we have manufacturer of those: [url]http://www.ambm.pl/index.php/urzadzenia-kontrolno-pomiarowe/dd1a.html[/url] Freq range:: 0.1Hz-160MHz Tuning step: 0.1Hz, 1Hz, 10Hz, 100Hz do 10MHz Output amplitude: 50R/10k: 1mVpp ÷ 1Vpp / 2mVpp ÷ 2Vpp Tuning step of amplitude: 1mV, 10mV, 100mV lub 0.5, 1, 3, 6, 10dB Inequality: max -1dB / -4dB Freq accuracy: -3...+5 ppm Output impedance: 50R +/-10% Artifacts and noise: 0.1Hz ÷ 20MHz: < -55dB (related to 1Vpp / 50R) 20MHz ÷ 100MHz: < -45dB 100MHz ÷ 150MHz: < -40dB It is AM/FM modulated 470Hz, FM deviation can be adjusted from 1kHz to 50kHz in 1kHz steps. Nice piece of equipment, I own one and I like it a lot. Mike [/QUOTE]

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