User Contributed MET/CAL PROCEDURE ============================================================================= INSTRUMENT: TEK.7A12: DUAL TRACE AMPLIFIER; ILCM 336; PERFORMANCE DATE: 26-May-93 AUTHOR: User Contributed REVISION: ILCM 12-336-CU2-A ADJUSTMENT THRESHOLD: 70% NUMBER OF TESTS: 36 NUMBER OF LINES: 178 CONFIGURATION: Tektronix CG5001 ============================================================================= STEP FSC RANGE NOMINAL TOLERANCE MOD1 MOD2 3 4 CON 1.001 HEAD {**** 7A12 DUAL TRACE AMPLIFIER PART 1/P ****} 1.002 ASK+ P S M L T 1.003 ASK- R B J F W 1.004 SET 1.005 DISP The below listed additional equipment "or equivalent" 1.005 DISP will be required to perform this performance. Obtain 1.005 DISP the equipment at this time. 1.005 DISP 1.005 DISP TEKTRONIX 7704 SERIES O'SCOPE 1.005 DISP TEKTRONIX 7B71 TIMEBASE MODULE 1.006 HEAD **** 7A12 PRELIMINARY EQUIPMENT CONFIGURATION **** 1.007 DISP Configure the 7A12 module into a standard O'Scope 1.007 DISP system as follows: 1.007 DISP (1) Turn 7704 series O'scope POWER OFF. 1.007 DISP (2) Insert 7A12 into LEFT VERT. compartment. 1.007 DISP (3) Insert 7B71 TIME BASE into LEFT HORIZ. compartment. 1.007 DISP (4) Turn 7704 series O'scope POWER ON. 1.008 HEAD ****** 7A12 PRELIMINARY CALIBRATION SETUP ****** 1.009 SET DISPLAY MODE: CH1 1.009 SET TRIG. SOURCE: AUTO 1.009 SET CH1 VOLTS/DIV: 5mV 1.009 SET CH1 COUPLING: GND. 1.009 SET CH1 VAR. VOLTS/DIV: CAL IN 1.009 SET CH1 POLARITY: +UP 1.009 SET CH1 OFFSET: MIDRANGE 1.009 SET CH1 POSITION: MIDRANGE 1.010 SET CH2 VOLTS/DIV: 5mV 1.010 SET CH2 COUPLING: GND. 1.010 SET CH2 VAR. VOLTS/DIV: CAL IN 1.010 SET CH2 POLARITY: +UP 1.010 SET CH2 OFFSET: MIDRANGE 1.010 SET CH2 POSITION: MIDRANGE 1.011 SET TIME BASE TIME/DIV: 1mSEC 1.011 SET TIME BASE COUPLING: AC 1.011 SET VAR. TIME/DIV: CAL IN 1.011 SET TIME BASE TRIG MODE: AUTO 1.011 SET TIME BASE TRIG SOURCE: INTERNAL 1.012 DISP 7704 VERT MODE: LEFT 1.012 DISP 7704 TRIG SOURCE: VERT MODE 1.012 DISP Configure O'scope HORIZONTAL MODE switches to 1.012 DISP coinside with location previously chosen for 1.012 DISP 7B71 Time Base Module. 1.013 DISP Allow at least 20 minutes warm up before proceeding. 1.014 HEAD {**** 7A12 CH1 DC BALANCE ****} 1.015 DISP Position the trace to the center horizontal line with 1.015 DISP the CH1 position control. 1.016 MESS Switch CH1 VOLTS/DIV control between the 5mV and 1.016 MESS 10mV positions. 1.017 EVAL Check that the trace moves no more than O.5 Div. 2.001 SET CH1 VOLTS/DIV: 10mV 2.001 SET CH1 VAR. VOLTS/DIV: OUT 2.002 MESS Turn {CH1 VOLTS/DIV VARIABLE control} from fully 2.002 MESS counterclockwise to fully clockwise. 2.003 EVAL Check that the trace moves no more than 0.5 Div. 3.001 SET CH1 VAR. VOLTS/DIV: CAL IN 3.002 MESS Switch polarity between +up and invert. 3.003 RSLT =POLARITY CHECK 3.004 EVAL Check that the trace moves no more than 0.5 Div. 4.001 DISP CH1 POLARITY: +UP 4.002 HEAD {**** 7A12 CH2 DC BALANCE ****} 4.003 SET DISPLAY MODE: CH2 4.004 DISP Position the trace to the center horizontal line with 4.004 DISP the CH2 position control. 4.005 MESS Switch CH2 VOLTS/DIV control between the 5mV and 4.005 MESS 10mV positions. 4.006 EVAL Check that the trace moves no more than 0.5 Div. 5.001 SET CH2 VOLTS/DIV: 10mV 5.001 SET CH2 VAR. VOLTS/DIV: OUT 5.002 MESS Turn {CH2 VOLTS/DIV VARIABLE control} from fully 5.002 MESS counterclockwise to fully clockwise. 5.003 EVAL Check that the trace moves no more than 0.5 Div. 6.001 SET CH2 VAR. VOLTS/DIV: CAL IN 6.002 MESS Switch polarity between +up and invert. 6.003 RSLT =POLARITY CHECK 6.004 EVAL Check that the trace moves no more than 0.5 Div. 7.001 DISP CH2 POLARITY: +UP 7.002 HEAD {**** TRACE IDENTIFY ****} 7.003 SET CH1 COUPLING: DC 7.003 SET CH2 COUPLING: DC 7.003 SET DISPLAY MODE: CH1 7.004 DISP Center trace vertically with CH1 POSITION control. 7.005 MESS Press CH1 IDENTIFY button. 7.006 EVAL Check that the trace moves upward. 8.001 SET DISPLAY MODE: CH2 8.002 DISP Center trace vertically with CH2 POSITION control. 8.003 MESS Press CH2 IDENTIFY button. 8.004 EVAL Check that the trace moves upward. 9.001 HEAD {**** 7A12 CH2 GAIN CHECK ****} 9.002 ASK+ R 9.003 SET CH1 VOLTS/DIV: 5mV 9.003 SET CH2 VOLTS/DIV: 5mV 9.004 DISP Connect CG551 OUTPUT to the CH2 INPUT of the UUT. 9.005 MESS 9.006 DISP Note: Leave CH1 & 2 COUPLING in DC during GAIN TESTING. 9.007 MEM2 =CH2 VOLTS/DIV 9.008 RSLT =CH2 GAIN CONTROL SETTING 9.009 5001 5 20mVpp 1.5% 1kH 10.001 SET CH2 VOLTS/DIV: 10mV 10.002 5001 10 50mVpp 1.5% 1kH 11.001 SET {CH2 POLARITY: INV} 11.002 5001 10 50mVpp 1.5% 1kH 12.001 SET CH2 POLARITY: +UP 12.002 SET {CH2 VAR. VOLTS/DIV: OUT} 12.003 5001 50mVpp 1kH -D S 12.004 MESS Adjust variable control FCCW. 12.005 EVAL Check for < or = 2 Div. of vertical amplitude. 13.001 SET CH2 VAR. VOLTS/DIV: CAL IN 13.002 HEAD {**** 7A12 CH1 GAIN CHECK ****} 13.003 SET DISPLAY MODE: CH1 13.004 DISP Move CG551 OUTPUT to the CH1 INPUT of the UUT. 13.005 MESS 13.006 MEM2 =CH1 VOLTS/DIV 13.007 RSLT =CH1 GAIN CONTROL SETTING 13.008 5001 5 20mVpp 1.5% 1kH 14.001 SET CH1 VOLTS/DIV: 10mV 14.002 5001 10 50mVpp 1.5% 1kH 15.001 SET {CH1 POLARITY: INV} 15.002 5001 10 50mVpp 1.5% 1kH 16.001 SET CH1 POLARITY: +UP 16.002 SET {CH1 VAR. VOLTS/DIV: OUT} 16.003 5001 50mVpp 1kH -D S 16.004 MESS Adjust variable control FCCW. 16.005 EVAL Check for < or = 2 Div. of vertical amplitude. 17.001 SET CH1 VAR. VOLTS/DIV: CAL IN 17.002 HEAD {*** 7A12 CH1 DEFLECTION FACTOR ACCURACY ***} 17.003 MESS 17.004 5001 20 100mVpp 2% 1kH 18.001 5001 50 200mVpp 2% 1kH 19.001 5001 0.1 0.5Vpp 2% 1kH 20.001 5001 0.2 1Vpp 2% 1kH 21.001 5001 0.5 2Vpp 2% 1kH 22.001 5001 1 5Vpp 2% 1kH 23.001 5001 2 10Vpp 2% 1kH 24.001 5001 5 20Vpp 2% 1kH 25.001 HEAD {*** 7A12 CH2 DEFLECTION FACTOR ACCURACY ***} 25.002 MEM2 =CH2 VOLTS/DIV 25.003 SET DISPLAY MODE: CH2 25.004 DISP Move CG551 OUTPUT to the CH2 INPUT of the UUT. 25.005 5001 20 100mVpp 2% 1kH 26.001 5001 50 200mVpp 2% 1kH 27.001 5001 0.1 0.5Vpp 2% 1kH 28.001 5001 0.2 1Vpp 2% 1kH 29.001 5001 0.5 2Vpp 2% 1kH 30.001 5001 1.0 5.0Vpp 2% 1kH 31.001 5001 2.0 10.0Vpp 2% 1kH 32.001 5001 5.0 20Vpp 2% 1kH 33.001 HEAD {*** 7A12 CH1 LOW-FREQUENCY COMPENSATION ***} 33.002 SET TIME BASE TIME/DIV: .2mSEC 33.002 SET DISPLAY MODE: CH1 33.002 SET CH1 VOLTS/DIV: 10mV 33.002 SET CH2 VOLTS/DIV: 10mV 33.003 DISP Connect CG551 OUTPUT with a 50 ohm termination to 33.003 DISP the CH1 INPUT of the UUT. 33.004 5001 60mVpp 1kH -D E S L 33.005 MESS Check for Square Corner and Flat-top + or - 0.2 Div. 33.006 EVAL 34.001 HEAD {*** 7A12 CH2 LOW FREQUENCY COMPENSATION ***} 34.002 SET DISPLAY MODE: CH2 34.003 DISP Move CG551 OUTPUT with 50 Ohm termination to CH2 INPUT. 34.004 5001 60mVpp 1kH -D E S L 34.005 EVAL 35.001 CALL TEK.7A12: DUAL TRACE AMPLIFIER PART 2/P 35.002 JMP 36.001 35.003 EVAL 36.001 CALL TEK.7A12: DUAL TRACE AMPLIFIER PART 3/P 36.002 END