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Leader LG226
TV Signal Generator
Discontinued

  • RF output frequency
  • Output attenuator
  • Video modulation
  • Sound modulation
  • Preset function
  • Remote control function
  • GPIB function

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Product Information
Datasheet 147 kB  
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The LG 226 TV Signal Generator provides the capability to modulate an analog TV signal in VSB-AM format applicable to the PAL, NTSC, and SECAM broadcasting systems.
The TV signals of VHF, UHF, and CATV channels can be generated by applying the external composite video signal and audio signal.
The full-field color bars and line sweep signals, and 1 kHz/400 Hz audio signals can also be generated. This instrument can also be used as an analog TV signal modulator of the LT 450 Video Signal Generator since this instrument provides the LT 450 control capability.
 
Features
Function Descriptions
RF Output
Frequency Range: 30 MHz to 950 MHz
Frequency Resolution: 50 kHz
Frequency Accuracy: 10 ppm
Frequency Switching Time: Within 100 ms
Frequency Setting Channel Mode: Setting with a built-in channel table
Frequency Mode: Setting an arbitrary frequency
Output Impedance: 75 Ω
Output Connector: BNC
Output Level Range: -80 to 0 dBm (0 dBm max.)
Level Resolution: 1 dB
Output Level Accuracy: ±2 dB (0 to -9 dBm)
±3 dB (-10 to -80 dBm)
Spurious: Within -30 dBc (Harmonics)
Within -40 dBc (Non-Harmonics)
Video Signal
Modulation System: Amplitude modulation of the VSB (vestigial sideband) system according to a broadcast system
Modulation At the time of built-in channel table setting: 87.5 %±3 % (Negative modulation)
97.0 %±3 % (Positive modulation)
At the time of arbitrary setting: 0 to 100 % (in 0.5 % steps)
Modulation Frequency Band At the time of built-in channel table setting: 4.2 MHz/5.0 MHz/6.0 MHz (Depends on a broadcast system)
At the time of arbitrary setting: 4.2 MHz/5.0 MHz/6.0 MHz
Modulation Frequency Flatness: ±1 dB
Input Impedance: 75 Ω
Input Connector:  BNC Reference
Input Level:  1 Vp-p
Spectrum Polarity: Positive (upper sound wave)
Built-in Pattern: Full-field Color Bar (NTSC/PAL)
Line sweep (at 100 % modulation: 4.2 MHz) (NTSC/PAL)
Sound Signal
Carrier Frequency At the time of built-in channel table setting: 4.5 MHz/5.5 MHz/6.0 MHz/6.5 MHz (Depends on a broadcast system)
At the time of arbitrary setting: 4.5 to 6.5 MHz (in 0.5 MHz steps)
Video Sound Ratio At the time of built-in channel table setting: -6 dB/-7 dB/-10 dB (Depends on a broadcast system)
At the time of arbitrary setting: -30 to 0 dB (in 1 dB steps)
Modulation Types: FM/AM (L System) (Depends on a broadcast system at the time of built-in channel table setting)
Frequency Deviation  At the time of a built-in channel table Setting: 15 kHz/30 kHz (equivalent to 60 % of the maximum deviation for each broadcasting system)
At the time of an arbitrary setting: 0 to 100 kHz (in 1 kHz steps)
Modulation (AM) At the time of built-in channel table Setting:  60 %
At the time of arbitrary setting: 0 to 60 % (in 1 % steps)
Pre-Emphasis At the time of built-in channel table setting: 75 μs/50 μs
At the time of arbitrary setting: 75 μs/50 μs/OFF (Depends on a broadcast system)
Modulation Frequency Response: 40 Hz to 100 kHz
Modulation Frequency Flatness: ±1 dB
Reference Input Level: 0 dBm (0.775 Vrms)
Input Impedance: 600 Ω
Input Connector: BNC
Built-in Sound Signal: Sine wave 400 Hz/1 kHz
Preset Function: Up to 100 sets of panel settings can be stored and recalled.
 
Ordering Information
Model Description Buy Online Price
LG226 Leader LG226 TV Signal Generator Discontinued

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