RJM ARTS-201B, User Manual

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SECTI SECTI SECTI SECTION V ON V ON V ON V
ARTS ARTS ARTS ARTS----201B 201B 201B 201B
Calibration procedure Calibration procedure Calibration procedure Calibration procedure
Equipment required:
Dual channel oscilloscope, >50MHz.
Video test set.
Sweep generator.
Vectorscope.
Audio generator and analyzer.
Digital voltmeter.
100 meter reel of 8281 or 1505A coaxial cable.
General.
General. General. General.
In order to satisfactorily complete this procedure the ARTS-201B must be
operating correctly. Before attempting to calibrate the unit ensure that all audio
and video paths, from input to output, are present, and that all logic and tally
functions are correct. Check that all LEDs on the front panel illuminate correctly
and that the GPI connector functions are present and correct.
1. Power supplies.
1. Power supplies. 1. Power supplies.
1. Power supplies.
The voltages shown on the main board test points are nominal. The circuits
employed in the ARTS-201B are not voltage level sensitive and the voltage
values are not adjustable.
Remove the PS#2 power cord from the source of AC.
Measure the +15v TP, +14.5v to +15.5v.
Measure the -15v TP, -14.5v to -15.5v.
Measure the +5v TP, +4.8v to +5.2v.
Measure the -5v TP, -4.8v to -5.2v.
Replace the PS#2 power cord and remove the PS#1 power cord from the source
of AC.
Measure the +15v TP, +14.5v to +15.5v.
Measure the -15v TP, -14.5v to -15.5v.
Measure the +5v TP, +4.8v to +5.2v.
Measure the -5v TP, -4.8v to -5.2v.
Replace the PS#1 power cord.