Radiometric devices >> modulation meters

SK3-47

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Measurer SK3-47 (SK347, SK3 47, ck3-47, ck347, ck3 47)
For the precise measurement of AM signals of different transmission equipment and test oscillators.
Carrier frequency range: 0.15 MHz to 500 MHz (in the mode of AM), 4 MHz-1000 MHz (FM mode)
Modulating frequency range 0.03 kHz-60kHz.
Sensitivity: 50 mV (0,15-4 MHz and 250-500 MHz), 30 mV (4-250 MHz), 300 mV (500-1000 MHz).
Measurement range:
1-500 kHz frequency deviation;
AM 1 ratio to 100%.

Modulation measurer SK3-47 is designed for precise measurement of AM signals of different transmission equipment and test oscillators.
The presence of digital readout of the measured values, indicating a continuous adjustment to the frequency of the input signal and its level, frequency-locked loop oscillator and oscillator frequency setting the built-in frequency counter considerably reduces the measurement time.
Thanks to the automatic stabilization of a wide dynamic range, low distortion introduced by the transportation mechanism meter SK3-47 in the measured signal with the demodulation is possible to accurately analyze the envelope of the signal from external devices - spectrum analyzers, ISI, oscilloscope connected to the woofer output.
The presence of the instrument measurer SK3-47 switchable low-frequency band tract allows you to analyze the signal at the optimal signal / noise ratio.
Preselection mode output provides a measurement input deadbeat coefficient AM in the presence of harmonics of the carrier frequency.
 
Basic data
Carrier frequency range: 0.15 MHz to 500 MHz (in the mode of AM), 4 MHz-1000 MHz (FM mode)
Modulating frequency range 0.03 kHz-60kHz.
Sensitivity: 50 mV (0,15-4 MHz and 250-500 MHz), 30 mV (4-250 MHz), 300 mV (500-1000 MHz).
Measurement range:
1-500 kHz frequency deviation;
AM 1 ratio to 100%.
The basic error of measurement:
frequency deviation (0,05 δf + δf w) kHz;
coefficient AM (0,05 M + 0.5)%.
Odd harmonics introduced in the signal modulation unit: 0.2% (up to 30 kHz), 0.5% (up to 100 kHz) to 1% (up to 150 kHz), 2% (up to 500 kHz).
Harmonic coefficients to be made ​​to the envelope of the AM signal measurement.
ratio AM: 0,5% (30%), 1% (90%).
- Built-electron-counting frequency;
- Small-modulation distortion of the law of the measured signal;
- Variable bandwidth on bass;
- Preselection input.
Dimensions 355h140h500mm.
Weight of the device measurer SK3-47 - 9.5 kg.


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