490B
490B Datasheet
The 490B is intended for the checking and rejuvenating of the cathode ray tubes CRT for both color and black-and-white television sets and monitors. With this instrument you will be able to find and repair leakage or shorts by measuring the RGB current of cathodes. You will also be able to plot voltage/current features and to rejuvenate each cathode separately.<br>• Test and restore color or monochrome CRTs<br>• Test and restore most computer monitor CRTs<br>• Test and restore most projection TV CRTs<br>• Test emission, tracking, leakage, shorts, life<br>• Remove shorts, clean and balance guns,
| Part | Datasheet |
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490B |
490B (pdf) |
| PDF Datasheet Preview |
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| CR-XA Universal CRT Adapter The 490B is intended for the checking and rejuvenating of the cathode ray tubes CRT for both color and black-and-white television sets and monitors. With this instrument you will be able to find and repair leakage or shorts by measuring the RGB current of cathodes. You will also be able to plot voltage/current features and to rejuvenate each cathode separately. • Test and restore color or monochrome CRTs • Test and restore most computer monitor CRTs • Test and restore most projection TV CRTs • Test emission, tracking, leakage, shorts, life • Remove shorts, clean and balance guns, rejuvenate cathodes • Continual set-up chart updates and new adapter development • Extra rugged carrying case 490B Specifications 490B model Heater Selectable voltages Cut-Off adjustment G1 bias G2 bias Emission test Measurement range G1 bias Color tubes Rejuvenation Current Cycle duration Start cycle Color tubes Leakage and short circuit Indicators Removing Balance test Balance adjustment Life test Emission curve Measurement G1 bias Power supply Input voltage Power Consumption Mechanical features Dimensions WxHxD Weight 6.3V 1A max. 12V 0.5A max. -50V and -70V selectable +30V to +600V, variable 0 to 1600 uA Cut-off bias R, G or B simultaneous measuring 25 or 50 mA, selectable 70s approx. Manually R, G or B selection Neon Between G1-K and Fil-K For the three cathodes Approximate life period rating Of 1k current Variable from 0 up to-100V AC 110V 50-60 Hz 125V/220V/240V internally selectable 35W Rugged carrying case with 16 adapter storage. x13.4 x5.7" 420x340x145 mm lbs. 4.9kg Accessories One Year Warranty SUPPLIED Instruction manual, Set-up chart, Spare fuse, 2 Adapter sockets for several CRT, Adapter cable, High voltage anode cable Adapter JEDEC base CA23 B10-276 CA24 B 8-274 CC-12* Conversion cable * allow use of “CR” adapters, including the CR-XA Universal Adapter OPTIONAL CR-XA Universal Adapter |
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