DB Elettronica Telecomunicazioni CTX 5, User Manual

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ELETTRONICA TELECOMUNICAZIONI S.p.A.
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2) Video modulation parameters
Amplitude / frequency response ± 0,5dB (within the video band)
Differential gain at nominal power < 4%
Differential phase at nominal power < ± 2°
2TK factor < 1,5%
Group delay PV 0.75/5 MHz < ± 30nS (within the video band)
Sync pulse compression at nominal power < 3%
In-band intermodulation
(ref. to nominal power with 3 tones method Vc –5dB; Sc –10dB; Cc –17dB)
< -60dB
Off-band spurious radiation < -60dB
S/N ratio (weighted) > 60dB
External reference frequency input 5 or 10MHz
Local oscillator stability (0 – 50 °C) < 2.5 ppm/year
(with optional high stability) < 0.5 ppm/year
L.O. frequency resolution 50kHz steps (standard version)
1Hz steps (with DDS precision offset option)
1) Audio Input
XLR, two double inputs (stereo, A1, A2)
Input impedance 600 Ohm or 10 kOhm (balanced or unbalanced)
Input level 6dBm ± 6dB for ± 50kHz frequency deviation
2) Audio modulation characteristics
Modulation FM (F3) with maximum deviation ±50kHz
Pre-emphasis 50 μ s or 75 μ s
Amplitude / frequency response 30Hz ± 15kHz ± 0,5dB
Harmonic distortion < 0,1% (30Hz ÷ 15kHz by ± 50kHz deviation)
Intermodulation d2< 0,3%, d3 < 0,5% between 15kHz and
100kHz at ± 50kHz total deviation
S/N ratio > 65 dB
Separation between channels > 75 dB
Common mode rejection ratio of audio inputs (balanced mode) > 56 dB