490B
Specifications
model
490B
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
Heater
Selectable voltages
6.3V 1A max.
12V 0.5A max.
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
-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.
17.7 x13.4 x5.7" (420x340x145 mm)
10.71 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
76
Universal Adapter
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