SECTION IV CALIBRATION PROCESS FOR OSCILLOSCOPE, TEKTRONIX TYPE 541A

TB 9-6625-149-50

(3) TRIGGERING LEVEL control to 0 (zero).

(4) TRIGGERING MODE switch to AUTO.

(5) TRIGGER SLOPE switch to +INT.

(6) TIME/CM switch to .5 MILLISEC.

(7) TIME/CM VARIABLE control to CALIBRATED.

(8) STABILITY control to midrange.

(9) INTENSITY, FOCUS, and ASTIGMATISM controls for sharp trace.

(10) HORIZONTAL POSITION control to center the trace.

(11) AMPLITUDE CALIBRATOR switch to 100 VOLTS.

g. Turn calibration adapter TEST FUNCTION switch to HIGH LOAD.

h. Turn calibration adapter VERTICAL POSITION control to center trace on crt.

SECTION IV

CALIBRATION PROCESS FOR OSCILLOSCOPE,

TEKTRONIX TYPE 541A

NOTE

Unless otherwise specified, verify the results of each test and

take corrective action whenever the test requirement is not

met before continuing with the calibration.

NOTE

When indications specified in paragraphs 8 through 18 are not

within tolerance, perform the power supply check prior to

making adjustments. After adjustments are made, repeat

paragraphs 8 through 18. Do not perform power supply check

if all other parameters are within tolerance.