User's Manual

Unit 2 – IF Modulator
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2. Technical Characteristics:
2.1. General Characteristics:
Operation Temperature: ___________________________________________________________________ 0 to 45°C
AC Power Supply: ________________________________________________________ 220Vca / +36Vcc (optional)
Maximum consuption: __________________________________________________________________________15W
Dimensions: _____________________________________ Height = 44mm; Width = 482.6mm; Depth =
197mm
Weight: _____________________________________________________________________________________ 3.45 Kg
2.2. Video Input:
Impedance: _______________________________________________________________________________ 75 Ohms
Return Loss:___________________________________________________________ > 30 dB (100 KHz to 4.2 MHz)
Level: ____________________________________________________________________________ 1 Vpp (adjustable)
Clamping ___________________________________________________________________________ in the blanking
2.3. Audio input:
Mono:
Impedance: _____________________________________________________________________ 600 Ohms balanced
Level: ___________________________________________________________________________ 0 dBm (Adjustable)
Bandwidth: _________________________________________________________________________________ 15 KHz
Stereo:
Impedance: ___________________________________________________________________ 75 Ohms unbalanced
Level: ___________________________________________________________________________ 0 dBm (Adjustable)
Bandwidth: ________________________________________________________________________________ 100 KHz
2.4. IF Output:
Impedance: _______________________________________________________________________________ 50 Ohms
Return loss: ________________________________________________________________________________ > 23 dB
Level: ________________________________________________________________ 0 dBm maximum. (Adjustable)
Audio/Video carrier ratio: ________________________________________________________ -10 dB (Adjustable)
Harmonics: ________________________________________________________________________________ < -60 dB
2.5. Video Carrier:
Frequency: ______________________________________________________________________________ 45.75 MHz
Modulation: _____________________________________________________________________ 87.5 % (Adjustable)
Frequency response: ___________________________________________________________ according to Mask. 1
Differential gain: _________________________________________________________________________ < +/- 3 %
Differential phase:___________________________________________________________________________ < +/- 2°
Signal to noise ratio: __________________________________________________________ > 60 dB (4.2 MHz BW)
K factor pulse 2 T: __________________________________________________________ < +/- 3 % (vide Mask. 2)
Line tilt: _________________________________________________________________________________ < +/- 2 %
Frame tilt: _______________________________________________________________________________ < +/- 3 %
Chr/Lum. delay: __________________________________________________________ < +/- 25 ns (vide Mask. 3)
Chrom./Luminance Gain: ________________________________________________________________ < +/- 2 %
Synchronizing Pulse Amplitude:___________________________________________________________ < +/- 2 %
Burst Amplitude: _________________________________________________________________________ < +/- 5 %
ICPM: ______________________________________________________________________ < +/- 2 ° (pre-correction)