Radiometric devices >> generators >> high-frequency signal generators

G4-73

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    High-frequency signal generator G4-73 (G473, G4 73)
    High-frequency signal generator G4-73 provides the RF signals from the two-frequency structure of the amplitude and frequency modulation and manipulation.
 
    Technical characteristics of the devices high-frequency signal generators G4-73:
 
    Temperature - from +5 º C to +40 º C;
    Relative humidity - up to 95% at +30 º C;
    Frequency range - the first signal frequency - 0.1 MHz 70 MHz-(10kHz step, continuous tuning is possible with external interpolator), the frequency of the second signal - 128kGts;
    The relative error of the instrument reference level signal generator G4-high 73 - 10%;
    Output impedance - 50 ohms;
    Power supply high-frequency signal generator G4-73 - AC 50 Hz ± 0,5 Hz, 220V ± 22V;
 
    Amplitude modulation
 
    The weakening of non-harmonic components of the Raman signal generator unit high-G4-73:
    - 60 dB - within ± 100 kHz;
    - 40 dB - a band of ± 100 kHz;
    Adjustment range values ​​and the limits of the reference rate of the modulation depth - from 10% to 95%;
    The setting error modulation signal generator unit high-G4-73 - ± (0,05 m +4%);
    Distortion of the envelope modulating signal:
    - 5% - for the modulation depth of up to 30%;
    - 15% - for the modulation depth of up to 95%;
    The frequency modulation signal generator unit high-G4-73:
    - 1000 Hz - at an internal AM;
    - From 50Hz to 5000Hz - from an external sinusoidal signal;
    Voltage necessary to obtain the maximum modulation depth equal to 95% of 5V;
 
Parameters
0.1 MHz 70 MHz-mode
128kGts mode
cw
frequency telegraphy
cw
frequency telegraphy
Error of frequency
10.7.
10 -7 ƒ-1Hz
5Hz
1Hz
Frequency instability
10.7.
10 -7 ƒ +10 -2 the value of the frequency shift of 2 Hz
2Hz
10 -2 the value of the frequency shift of 2 Hz
Limits the output voltage
10 -7 B-0, 1B
-
10 -5 B-1B
The level of harmonics in the output signal
20dB
-
40dB
 
    Pulse modulation
 
    The frequency modulation signal generator unit high-G4-73:
    - 25 Hz, 1000 Hz - for internal IM (ratio of pulse duration to the duration of the pause 1:1);
    - From 25 Hz to 2500Gts (speed-50bod 5000bod) - from an external pulse signal;
    The value of attenuation in the pause - 20dB;
    The value of the distortion pulse signal generator unit high-G4-73 at 0.5 level (telegraphic distortion):
    - 3% - to speed up 1200bod;
    - 6% - to speed up 5000bod;
 
    Single and double entry frequency telegraphy
 
Frequency Telegraphy
The magnitude of the frequency shift
Single
15Hz, 125Gts, 250Hz, 500Hz, 1000Hz, 4000Hz, 8000Hz
Double entry
15Hz, 125Gts, 250Hz, 500Hz, 1000Hz
 
    Accuracy of the frequency shift signal generator unit high-G4-73 3 ∙ 10 -2 the value of the frequency shift of 0.5 Hz;
 
Mode frequency telegraphy
Frequency Modulation
The speed of the
Inner
25Hz
50bod
From an external pulse signal
2.5 Hz, 2500Gts
5bod-5000bod
 
    The value of the distortion pulse signal generator unit high-G4-73 at 0.5 level (telegraphic distortion):
    - 3% - at speeds up to 1200bod;
    - 6% - at speeds up to 5000bod;
 
Frequency band
70 MHz-0.1 MHz
0.128 MHz
The ratio of signal to noise level of the signal information
from 0dB to 70dB (10dB step)
from +10 dB to-35dB (5dB step)
 
    Dual frequency mode
 
    The information signal with the modulation of AM, IM, FT;
    Sinusoidal interference signal;
    Detuning of the signal generator unit high-G4-73 relative to the carrier data signal - ± 10 kHz (smooth);
    The error of the reference frequency deviation - ± (2 ∙ 10 -2 the value of the detuning frequency 50 Hz);
 
    Tri-mode
 
     Pilot tone sinusoidal signal A and signal B;
     Detuning of the signal generator unit high-G4-73 relative to the pilot signal (smooth) - ± 10 kHz;
     The error of the reference frequency deviation - ± (2 ∙ 10 -2 the value of the detuning frequency 50 Hz);
 
     Dimensions instrument signal generator high-G4-73:
    - Ten-day converter - 500h260h510mm;
    - Power modulators - 500h220h510mm;
    - Power supply - 500h180h500mm;
    Weight
    - Ten-day converter - 34kg;
    - Power modulators - 30kg;
    - Power supply - 27kg.

Photos: G4-73

G4-73 generator image.
G4-73 generator image.
G4-73 front view.
G4-73 front view.
G4-73 panel image.
G4-73 panel image.
G4-73 heterodyne image.
G4-73 heterodyne image.
G4-73 image of frequency manipulator.
G4-73 image of frequency manipulator.
G4-73 image of amplitude manipulator.
G4-73 image of amplitude manipulator.
G4-73 attenuator image.
G4-73 attenuator image.
G4-73 heterodyne image.
G4-73 heterodyne image.
G4-73 block of modulators image.
G4-73 block of modulators image.
G4-73 power supply unit image.
G4-73 power supply unit image.
G4-73 converter image.
G4-73 converter image.


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