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Leader 408 Test Generator

Leader 408
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USED NTSC Test Generator w/Sweep & Multiburst


  • Composite, RGB, Y/R-Y/B-Y, Y/C
  • VHF/UHF/Cable R-F Coverage
  • Programmable Parameters
  • 100 Program Storage
  • 15 MHz Sweep and Multiburst
  • VHF/UHF Modulator Accepts Internal
    and External Video and Audio
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Leader 408

Leader 408 Test Generator Leader 408

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Product Information

Microprocessor control and digital synthesis give the 408 extreme flexibility in test signal programming of both video and RF outputs. Signals available simultaneously include composite video, Y/C, Y/R-Y/B-Y, GBR, full sync generator outputs, audio test tones (400 Hz and 1 kHz) and modulated output from 30 to 900 MHz. Multiple test patterns include wide and narrow video sweeps and multiburst with last burst variable to 15 MHz. Signal modifiers include polarity inversion, superimposed circle and moving marker as well as on/off and level control of burst, sync, setup, luminance, chroma, R, B and G. Genlock and remote control are standard. GPIB is available as an option. The 408 operates in the NTSC system. Applicable video and audio modulation is selected by system designation. The FUNCTION DATA block provides easy access to all programming functions. Here, up to 100 test setups can be stored, each one holding front panel settings (pattern selected, genlock on/off, signal modifiers, etc.), tailored or standard video parameters. RF channel selected or tailored to any carrier frequency between 30 and 900 MHz. Program control over video parameters allow component values for Betacam or MII to be set up. The LCD panel shows partial programming menus, but the full menus may be superimposed on the selected pattern on a monitor screen.


General Specifications
PAL - B, C, D, G, H, I, K and L
SECAM III - B, D, G, H, K and L
Crosshatch 100% 15 V x 11 H with corner marker
Convergence 100% 15 V x 11 H, lines, 75% 14 V x 10 H dots
Window White window on black background
Checker 8 V x 6 H
The above are white on black, but may be polarity inverted
Staircase 5 step, B-Y modulation 40% (on-off)
10 step, B-Y modulation 40% (on-off)
Demodulation NTSC B-Y/R-Y, I/Q
SECAM Not Applicable
Color Bars Full field, white 75 or 100% switchable
1978 adapted
Rasters (Flat Fields) 8 colors including black and white
Multiburst NTSC 0.5, 1, 2, 3, 3.58 and 4.2 MHz
PAL/SECAM 0.5, 1, 2, 4, 4.8 and 5.8 MHz Last burst variable 1 to 15 MHz (all systems) 50 or 100% amplitude
Flatness ± 0.5 dB, 0.5 to 10 MHz
Video Sweep Narrow 0.1 - 5 MHz
Wide 0.3 - 15 MHz
Markers Narrow NTSC 0.5, 1, 2, 3, 3.58 and 4.2 MHz
PAL/SECAM 0.5, 1, 2, 3, 4 and 5 MHz
Wide 2, 4, 6, 8, 10, 12 and 14 MHz
Others (Accessed with INC/DEC Keys) Split/reverse color bars, single cross, MATRIX (combo pattern), HORIZ color bars, color checker, modulated staircase at 10 and 90% APL
Mode Switching White 75 or 100%
Red on/off
Green on/off
Blue on/off
Burst on/off
Sync on/off
Luminance on/off
Chrominance on/off
Invert (polarity inversion of mono-chrome patterns
Moving Marker on/off (simulates motion for VCR speed checks)
Sync 0-200%*
Burst 0-200%*
Luminance 0-200%*
Chrominance 0-100%*
Setup NTSC 0-20%, PAL/SECAM 0% *Reference: Standard values for applicable system
Composite Video 1 V p-p into 75?, fixed, 0-1 V p-p variable
Trigger HD or VD switchable,TTL level
RF Output Frequency range 30-900 MHz
Preset resolution 10 kHz ?F in CH mode ± 10 MHz
Level 100 μV - 10 mV, approx
Modulation polarity negative or positive according to country
Accuracy ± 50 ppm of set value
Sound intercarrier system NTSC 4.5 MHz, PAL/SECAM 5.5, 6 and 6.5 MHz selectabl
Composite video 1 V p-p
Y 1 V p-p
R-Y 0.7 V p-p
B-Y 0.7 V p-p
Subcarrier 2 V p-p into 75?
NTSC 3.579545 MHz ± 50 Hz*
PAL 4.43361875 MHz ± 50 Hz*
*± 2 Hz optional
SECAM not applicable
H drive Pulse negative, 4 V p-p
V drive Pulse negative, 4 V p-p
Composite sync Pulse negative, 4 V p-p
Composite blanking ulse negative, 4 V p-p
Burst flag Pulse negative, 4 V p-p
Black burst NTSC 286 mV p-p
PAL 300 mV p-p
Audio 400 Hz, 1 V p-p into 1 k Ohms
100, 120, 220, 240 V ac ± 10%
50/60 Hz, 55 VA (408), 60 VA (408NPS)
Size (W x H x D) 16 3/4 x 3 1/2 x 15 3/4 in.
426 x 88 x 400 mm
Weight 21 1/4 lbs., 9.7 kg

Leader 408 Product Specifications Summary:
(for full specs please see the full specs tab or the data sheet)

Video Test Equipment/Video Signal Generator Template

Video Output (Video Signal Generators)Composite, RGB, Y/C, Y/R-Y/B-Y
Video FormatNTSC
Tri-Level Sync SignalNo
Black BurstYes
Analog Audio OutYes
Test Patterns 4:3Checker, Color Bar 100%, Color Bar 75%, Crosshatch, Multiburst, Other 



ManualsSpec Sheets


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