1249B B&K Precision, 1249B Datasheet - Page 32

• Manufacturer Part Number: 1249B
• Description: COLOR GENERATORNTSC/RGB
• Manufacturer: B&K Precision
• Type: NTSC Benchtopr

Specifications of 1249B

• Patterns: Bar, Dot, Crosshatch, Raster
• Connection Method: RCA, RF, S-Video
• Power Source: 105,130VAC
• Signal Generator Type: NTSC Pattern
• Supply Voltage Range: 105V To 130V
• External Height: 86mm
• External Width: 290mm
• External Depth: 264mm
• Frequency: 30 Hz
• Equipment Type: NTSC Pattern Generators
• Lead Free Status / RoHS Status: na
• Lead Free Status / RoHS Status: na
• Other names: BK1249B

d.
e.
APPLICATIONS (CONT.)
The display shape depends upon the chroma bandpass,
demodulator alignment, and design of the TV chassis.
The better the alignment and bandwidth, the closer the
vector waveform will be to the ideal waveform.
Display shape will vary depending upon whether TV
chassis uses 90° or 105° angle of demodulation.
Fig. 5. Using a Conventional Oscilloscope
as a Vectorscope, step 1 (set-up).
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7.
Fig. 6. Using a Conventional Oscilloscope as a Vectorscope,
The vectorscope pattern can be a valuable tool for
troubleshooting color problems, including improper
alignment and adjustment, if the normal vectorscope
pattern is known. However, since normal patterns vary
considerably from one TV to another, a library of normal
displays measured from various popular TV chassis in
good working condition is desirable for reference.
step 2 (set-up).