Fluke MET/CAL Procedure ============================================================================= INSTRUMENT: Philips PM 3320A: CAL ADJ IEEE /5011,5191,6060,8842 DATE: 02-Oct-97 AUTHOR: Fluke REVISION: $Revision: 1.2 $ ADJUSTMENT THRESHOLD: 70% NUMBER OF TESTS: 1 NUMBER OF LINES: 812 CONFIGURATION: Fluke 8842A CONFIGURATION: Philips PM 5191 CONFIGURATION: Tektronix CG5011 CONFIGURATION: Fluke 6060B ============================================================================= #CONFIGURATION: Bench Oscilloscope STEP FSC RANGE NOMINAL TOLERANCE MOD1 MOD2 3 4 CON 1.001 ASK- D N P J F W 1.002 IEEE [SRQ OFF] 1.003 HEAD 9.1 GENERAL INFORMATION 1.004 DISP The following information provides the complete 1.004 DISP adjusting procedure for the instrument. As various 1.004 DISP control functions are interdependent, a certain order 1.004 DISP of adjustment is necessary. The procedure is, therefore, 1.004 DISP presented in a sequence which is best suited to this 1.004 DISP order, cross-reference being made to any circuit which 1.004 DISP may affect a particular adjustment. 1.005 DISP Before any adjustment, the instrument must attain its 1.005 DISP normal operating temperature. 1.005 DISP 1.005 DISP Warming-up time under average conditions is 30 min. 1.006 DISP Tolerances given are for the instrument under test and 1.006 DISP do not include test equipment error. 1.006 DISP 1.006 DISP The most accurate display adjustments are make with a 1.006 DISP stable, well-focused low intensity display. 1.006 DISP 1.006 DISP All controls that are mentioned without item numbers are 1.006 DISP located on the outside of the instrument. 1.007 HEAD WARNING: 1.008 DISP The opening of covers or removal of parts, except those 1.008 DISP to which access can be gained by hand, is likely to 1.008 DISP expose live parts, and also accessible terminals may be 1.008 DISP live. The instrument shall be disconnected from all 1.008 DISP voltage sources before any adjustment, replacement or 1.008 DISP maintenance and repair during which the instrument will 1.008 DISP be opened. 1.009 DISP If afterwards any adjustment, maintenance or repair of 1.009 DISP the opened instrument under voltage is inevitable, it 1.009 DISP shall be carried out only by a qualified person who is 1.009 DISP aware of the hazard involved. Bear in mind that 1.009 DISP capacitors inside the instrument may still be charged 1.009 DISP even if the instrument has been separated from all 1.009 DISP voltage sources. 1.010 HEAD 9.3 ADJUSTING PROCEDURE 1.011 DISP NOTE: Always use an insulated adjustment tool. 1.012 HEAD 5.2 REMOVING THE COVERS 1.013 DISP The instrument is protected by three covers: a front 1.013 DISP protection cover, a top cover and a bottom cover. To 1.013 DISP facilitate the removal of the instrument's covers, first 1.013 DISP put the fromt protection cover in postition. The proceed 1.013 DISP as follows: 1.013 DISP 1.013 DISP Hinge the carrying handle clear of the front protection 1.013 DISP cover. 1.014 DISP Stand the instrument on its protective front cover on a 1.014 DISP flat surface. 1.014 DISP 1.014 DISP Unscrew the two screws present in the left foot and the 1.014 DISP two screws in the right foot at the rear panel and 1.014 DISP remove these feet. 1.015 DISP The top cover and the bottom cover (without carrying 1.015 DISP handle) can be removed by shifting them backwards and 1.015 DISP lifting them free of the instrument. 1.016 DISP Connect the UUT to line power and switch it on. 1.017 HEAD 9.3.2 POWER SUPPLY ADJUSTMENTS 1.018 PIC 3320A20 (10,20,R/W) "Connect the 8842A Input Hi to" 1.018 PIC (11,20,R/W) "X4609 and Input Lo to X4611." 1.019 PIC 3320A20 (6,3,R/W) "Note the location of R4607" 1.020 MESS Adjust R4607 for an 8842A 1.020 MESS reading of 10V +/-0.1V. 1.021 8842 10V S 2W 1.022 PIC 3320A33 (7,48,R/W) "Connect the 8842A Input Hi to" 1.022 PIC (8,48,R/W) "X2517 and Input Lo to X2518." 1.023 PIC 3320A33 (5,44,R/W) "<- Note the location of R462" 1.024 MESS Adjust R462 for an 8842A reading of 5V +/-0.1V. 1.025 8842 5V S 2W 1.026 MESS 1.027 DISP Disconnect the 8842A from the UUT. 1.028 HEAD 9.3.3 CRT ADJUSTMENTS 1.029 PIC 3320A1 (6,16,R/W) " NOTE " 1.029 PIC (7,16,BL/W) "In the case that your instrument " 1.029 PIC (8,16,BL/W) "is completely misadjusted or after" 1.029 PIC (9,16,BL/W) "exchange of A1 it is recommended " 1.029 PIC (10,16,BL/W) "to turn R2658, R2659, R2678 and " 1.029 PIC (11,16,BL/W) "and R2682 completey CCW. Moreover " 1.029 PIC (12,16,BL/W) "it may be necessary to position " 1.029 PIC (13,16,BL/W) "the CRT text by means of: " 1.029 PIC (14,16,BL/W) " R2513 (vertical gain) " 1.029 PIC (15,16,BL/W) " R2533 (vertical position) " 1.029 PIC (16,16,BL/W) " R2566 (horizontal gain) " 1.029 PIC (17,16,BL/W) " R2571 (horizontal position) " 1.030 HEAD 9.3.3 CRT INTENSITY: DISPLAY 0 1.031 IEEE [SPL][SRQ ON] 1.032 IEEE SPL SERVICE,SERVICE 12[10] 1.033 DISP Set INTENS TRACE and INTENS TEXT controls 90 degrees 1.033 DISP from their CCW stop. 1.034 PIC 3320A1 (4,15,R/W) "Adjust R2637 so that the pattern" 1.034 PIC (5,15,R/W) "and the text are just visible." 1.035 HEAD 9.3.3 CRT FOCUS & ASTIGMATISM: DISPLAY 0 1.036 DISP Set FOCUS, INTENS TRACE and INTENS TEXT controls to 1.036 DISP their mid-position. 1.037 PIC 3320A1 (5,15,R/W) "Adjust R2609 and R2832 for a sharp" 1.037 PIC (6,17,R/W) "and well-defined test pattern." 1.038 HEAD 9.3.3 CRT TRACE ROTATION: DISPLAY 0 1.039 DISP Adjust front panel TRACE ROTATION 1.039 DISP so that the horizontal line on the C.R.T is exactly in 1.039 DISP line with the horizontal graticule lines. 1.040 HEAD 9.3.4 VERTICAL BALANCE: DISPLAY 1 1.041 IEEE SERVICE UP[10] 1.042 PIC 3320A1 (21,19,R/W) "<- Note the location of R2334" 1.043 PIC 3320FIG1 (1,60,R/W) "Now the display" 1.043 PIC (2,60,R/W) "switches between" 1.043 PIC (3,60,R/W) "two patterns of" 1.043 PIC (4,60,R/W) "which one is like" 1.043 PIC (5,60,R/W) "like the picture." 1.043 PIC (7,60,R/W) "Adjust R2334 so" 1.043 PIC (8,60,R/W) "that the vertical" 1.043 PIC (9,60,R/W) "jump of the small" 1.043 PIC (10,60,R/W) "horizontal lines" 1.043 PIC (11,60,R/W) "is <=0.1 div." 1.044 HEAD 9.3.4 VARIABLE HORIZONTAL GAIN BALANCE: DISPLAY 2 1.045 IEEE SERVICE UP[10] 1.046 PIC 3320A1 (15,15,R/W) "Adjust R2377 so that the horizontal" 1.046 PIC (16,15,R/W) "jump of the dot in the center of " 1.046 PIC (17,15,R/W) "the screen is <=0.1 div. " 1.047 HEAD 9.3.4 COMPENSATION OF CRT TOLERANCES: HORZ, DISPLAY 3 1.048 IEEE SERVICE UP[10] 1.049 PIC 3320A1 (15,15,R/W) "Adjust R2571 so that the horizontal" 1.049 PIC (16,15,R/W) "deviation of the dot from the " 1.049 PIC (17,15,R/W) "center of the screen is <=0.1 div. " 1.050 HEAD 9.3.4 COMPENSATION OF CRT TOLERANCES: VERT, DISPLAY 3 1.051 PIC 3320A1 (15,15,R/W) "Adjust R2533 so that the vertical " 1.051 PIC (16,15,R/W) "deviation of the dot from the " 1.051 PIC (17,15,R/W) "center of the screen is <=0.1 div. " 1.052 HEAD 9.3.4 VERTICAL GAIN: x5, DISPLAY 4 1.053 IEEE SERVICE UP[10] 1.054 PIC 3320A1 (15,15,R/W) "Adjust R2531 so that the vertical " 1.054 PIC (16,15,R/W) "distance between the two horizontal" 1.054 PIC (17,15,R/W) "lines is 8.0+/-0.1 div. " 1.055 HEAD 9.3.4 VERTICAL GAIN: x1, DISPLAY 5 1.056 IEEE SERVICE UP[10] 1.057 PIC 3320A1 (17,15,R/W) "<- Note the position of R2513 " 1.058 PIC 3320FIG1 (8,60,R/W) "Adjust R2513 so" 1.058 PIC (9,60,R/W) "that the vertical" 1.058 PIC (10,60,R/W) "distance between" 1.058 PIC (11,60,R/W) "the two horizontal" 1.058 PIC (12,60,R/W) "lines c & d is" 1.058 PIC (13,60,R/W) "8.0+/-0.1 div." 1.059 HEAD 9.3.4 VERTICAL GAIN: /5, DISPLAY 6 1.060 IEEE SERVICE UP[10] 1.061 PIC 3320A1 (16,15,R/W) "<- Note the position of R2516 " 1.062 PIC 3320FIG2 (8,62,R/W) "Adjust R2516 so" 1.062 PIC (9,62,R/W) "that the vertical" 1.062 PIC (10,62,R/W) "distance between" 1.062 PIC (11,62,R/W) "the two horizontal" 1.062 PIC (12,62,R/W) "lines a & b is" 1.062 PIC (13,62,R/W) "8.0+/-0.1 div." 1.063 HEAD 9.3.4 HORIZONTAL GAIN: DISPLAY 5 1.064 IEEE SERVICE DOWN[10] 1.065 PIC 3320A1 (15,15,R/W) "<- Note the position of R2566 " 1.066 PIC 3320FIG1 (8,60,R/W) "Adjust R2566 so" 1.066 PIC (9,60,R/W) "that the distance" 1.066 PIC (10,60,R/W) "between the start-" 1.066 PIC (11,60,R/W) "ing points of the" 1.066 PIC (12,60,R/W) "small horizontal" 1.066 PIC (13,60,R/W) "lines a & b is" 1.066 PIC (14,60,R/W) "10.0+/-0.1 div." 1.067 HEAD 9.3.4 OVERSCAN SUPPRESSION: DISPLAY 7 1.068 IEEE SERVICE UP,SERVICE UP[10] 1.069 PIC 3320FIG3 1.070 PIC 3320A1 (11,15,R/W) "Adjust R2678 so that the test " 1.070 PIC (12,15,R/W) "pattern in the left-hand side of " 1.070 PIC (13,15,R/W) "the screen is just at its biggest. " 1.071 PIC 3320A1 (9,15,R/W) "Adjust R2682 so that the test " 1.071 PIC (10,15,R/W) "pattern in the right-hand side of " 1.071 PIC (11,15,R/W) "the screen is just at its biggest. " 1.072 PIC 3320A1 (10,15,R/W) "Adjust R2658 so that the test " 1.072 PIC (11,15,R/W) "pattern in the bottom side of the " 1.072 PIC (12,15,R/W) "screen lies 0.1 div. outside the " 1.072 PIC (13,15,R/W) "graticule of the screen. " 1.073 PIC 3320A1 (10,15,R/W) "Adjust R2659 so that the test " 1.073 PIC (11,15,R/W) "pattern in the top side of the " 1.073 PIC (12,15,R/W) "screen lies 0.1 div. outside the " 1.073 PIC (13,15,R/W) "graticule of the screen. " 1.074 IEEE SET AUT[10] 1.075 HEAD 9.3.5 P^2CCD PRE-ADJUSTMENT 1.076 OPBR NOTE: The following steps must only be done if the 1.076 OPBR instrument is completely misadjusted or after 1.076 OPBR replacement of A33. 1.076 OPBR Do you wish to perform the adjustments? 1.077 JMPF 1.114 1.078 HEAD 9.3.10 AUTO OFFSET LEVEL 1.079 DISP Connect the PM 5191 Output to UUT Channel A. 1.080 PIC 3320A32 (9,16,R/W) "<- Connect the 8842A to X7007 and " 1.080 PIC (10,26,R/W) " chassis ground. " 1.081 5191 100mVpp 1kH -D SI S 1.082 IEEE SET AUT[10][D9000]VER A,ATT .1E+00[10] 1.083 PIC 3320A32 (13,16,R/W) "<- Note the location of R7052 " 1.084 MESS Adjust R7052 for an 8842A reading of 0.0+/-0.1V. 1.085 8842 0V S 2W 1.086 MESS 1.087 5191 * S 1.088 DISP Disconnect the PM5191 from the UUT. 1.089 HEAD 9.3.11 OUTPUT VOLTAGE CALIBRATION GENERATOR 1.090 DISP Connect the 8842A INPUT to UUT CAL Output. 1.091 PIC 3320A1 (22,15,R/W) "<- Note the location of R2703 " 1.092 MESS Adjust R2703 for an 8842A reading of 500mV. 1.093 8842 500mV 2kH S 2W 1.094 MESS 1.095 DISP Disconnect the 8842A from the UUT. 1.096 HEAD 9.3.12 PLOT OUTPUT: VERTICAL 1.097 DISP Plug the plot cable into the DIN plot output socket at 1.097 DISP the rear of the instrument. 1.098 DISP Connect the UUT CAL Output to UUT Channel A and B. 1.099 IEEE SET AUT[10][GTL] 1.100 DISP Set VERTICAL SHIFT ch.A and ch.B to vertically center 1.100 DISP the two square waves on the screen. 1.101 IEEE VER A,ATT .1E+00,VER B,ATT .1E+00, 1.101 IEEE MSC R0,YVX ON,DSP ON,PLOTTIME 200[10] 1.102 DISP Connect the 8842A to the UUT as follows: 1.102 DISP [32] 8842A INPUT HI to UUT VERT PLOT OUTPUT HI (RED) 1.102 DISP [32] 8842A INPUT LO to UUT PLOT OUTPUT LO (BLACK) 1.103 IEEE PLT ANALOG[10] 1.104 MESS The oscilloscope starts the plot action. This can be 1.104 MESS seen because the dot moves from left to right on the 1.104 MESS bottom of the screen. 1.104 MESS Adjust R2738 on A1 for maximum 8842A reading of 1000mV. 1.105 8842 1000mV S 2W 1.106 IEEE PLT OFF[10] 1.107 HEAD 9.3.12 PLOT OUTPUT: HORIZONTAL 1.108 DISP Connect the 8842A to the UUT as follows: 1.108 DISP [32] 8842A INPUT HI to UUT HORZ PLOT OUTPUT HI (BLUE) 1.108 DISP [32] 8842A INPUT LO to UUT PLOT OUTPUT LO (BLACK) 1.109 IEEE PLT ANALOG[10] 1.110 MESS The oscilloscope starts the plot action. This can be 1.110 MESS seen because the dot moves from left to right on the 1.110 MESS bottom of the screen. 1.110 MESS Adjust R2728 on A1 for maximum 8842A reading of 1000mV. 1.111 8842 1000mV S 2W 1.112 MESS 1.113 IEEE PLT OFF;PLOTTIME 20,SET AUT[10][D9000][GTL] 1.114 HEAD 9.3.6 CORRECTION CIRCUIT 1.115 MATH M[3] = 0.1 1.116 PIC 3320A1 (2,50,R/W) "<- Turn potentiometer R721 " 1.116 PIC (3,60,R/W) "fully CCW " 1.117 IEEE VER A,IMP LOW,ATT .1E+00,POS CAL, 1.117 IEEE VER B,IMP LOW,ATT .1E+00[10] 1.118 DISP Connect the PM 5191 Output to UUT Channel A. 1.119 IEEE SET AUT[10][D9000]HOR MTB,TIM 10E-06[10][GTL] 1.120 5191 100 600mVpp 50kH SI N 1.121 5191 mVpp 1MH -D SI S 1.122 IEEE TIM .5E-06[10][GTL] 1.123 MEMI Enter the amplitude (pp) in divisions. 1.124 MATH M[1] = MEM - 6 1.125 MATH MEM1 = M[1] 1.126 JMPF 1.130 1.127 MATH MEM1 = M[1] - M[3] 1.128 JMPT 1.133 1.129 JMP 1.136 1.130 MATH MEM1 = M[1] + M[3] 1.131 JMPF 1.133 1.132 JMP 1.136 1.133 MATH MEM = 2 * M[1] + 6 1.134 DISP Adjust R721 on A11 for an 1.134 DISP amplitude of [MEM] div. 1.135 JMP 1.119 1.136 DISP Connect the PM 5191 Output to UUT Channel B. 1.137 IEEE VER A,POS 1000,VER B,POS CAL, 1.137 IEEE HOR MTB,TSO B,TIM 10E-06[10][GTL] 1.138 IEEE SET AUT[10][D11000][GTL] 1.139 5191 100 600mVpp 50kH SI N 1.140 5191 mVpp 1MH -D SI S 1.141 IEEE TIM .5E-06[10][GTL] 1.142 MEMI Enter the amplitude (pp) in divisions. 1.143 MATH M[2] = MEM - 6 1.144 MATH MEM1 = MEM - 6 1.145 JMPF 1.149 1.146 MATH MEM1 = M[2] - 0.1 1.147 JMPT 1.152 1.148 JMP 1.154 1.149 MATH MEM1 = M[2] + 0.1 1.150 JMPF 1.152 1.151 JMP 1.154 1.152 MATH M[3] = (M[1] + M[2]) / 2 1.153 JMP 1.118 1.154 MESS 1.155 5191 * S 1.156 DISP Remove all connections. 1.157 ASK- F 1.158 IEEE VER A,IMP HIGH,VER B,IMP HIGH[10] 1.159 HEAD 9.3.7 OFFSET OF ATTENUATORS: ch.A, VERTICAL 0 1.160 IEEE SPL SERVICE,SERVICE 10[10] 1.161 PIC 3320A35 (3,26,R/W) "Adjust R7451 so that the jump" 1.161 PIC (4,26,R/W) "of the upper trace is minimal." 1.162 HEAD 9.3.7 OFFSET OF ATTENUATORS: ch.B, VERTICAL 0 1.163 PIC 3320A35 (3,26,R/W) "Adjust R7454 so that the jump" 1.163 PIC (4,26,R/W) "of the lower trace is minimal." 1.164 IEEE SET AUT[10] 1.165 HEAD 9.3.7 GAIN IN A/B DIRECT MODE 1.166 DISP Connect the CG5011 Pulse Head to UUT Channel A and B 1.166 DISP using a BNC tee and equal length BNC cables. 1.167 5011 2Vpp 1kH -D S 1.168 IEEE SET AUT[10][D11000]HOR MTB,TIM 2E-03,VER ADD,FCN ON, 1.169 IEEE VER A,CPL DC,ATT .5E+00,VAR CAL,FCN OFF, 1.169 IEEE VER B,CPL DC,ATT .5E+00,VAR CAL,FCN OFF,INV ON[10] 1.170 PIC 3320A32 (20,35,R/W) "Adjust R5102 for a signal display" 1.170 PIC (20,69,R/W) "<=0.1 div." 1.171 IEEE INV OFF[10][GTL] 1.172 5011 * S 1.173 DISP Remove all connections. 1.174 HEAD 9.3.7 GAIN AND CORRECTION STROKE IN P^2CCD-MODE: ch.A 1.175 DISP Remove the shielding plate from A33 (P^2CCD unit). 1.175 DISP Put the instrument upside down, so that the P^2CCDs 1.175 DISP achieve the correct temperature. 1.176 DISP Connect the CG5011 Pulse Head to UUT Channel A. 1.177 IEEE VER A,CPL ZERO,FCN ON,HOR MTB,TIM .2E-03[10][GTL] 1.178 DISP Set VERTICAL SHIFT ch.A to vertically center the trace. 1.179 IEEE TIM .5E-03[10] 1.180 PIC 3320A33 (21,27,R/W) "<- Adjust R8139 to vertically " 1.180 PIC (21,57,R/W) "center the trace" 1.180 PIC (22,43,R/W) "on the screen." 1.181 IEEE VER A,CPL DC,ATT .5E+00[10][GTL] 1.182 5011 2Vpp 1kH -D S 1.183 DISP Set VERTICAL SHIFT ch.A to center trace on the screen. 1.184 PIC 3320A33 (13,20,R/W) "<- Adjust R8322 for vertical" 1.184 PIC (13,49,R/W) "deflection of 4.00+/-0.05 div." 1.184 PIC (11,22,R/W) "<- Adjust R8319 to keep the trace" 1.184 PIC (11,56,R/W) "vertically centered." 1.185 IEEE HOR MTB,TIM .2E-03[10] 1.186 PIC 3320A33 (15,9,R/W) "<- Measure the voltage at X3386" 1.186 PIC (15,41,R/W) "with the oscilloscope" 1.186 PIC (16,25,R/W) "(external trigger)." 1.186 PIC (13,25,R/W) "<- Note the location of R8342." 1.187 DISP Set the measuring oscilloscope to 1ms/div and 200mV/div. 1.188 PIC 3320FIG5 (10,4,BR/LW) "Adjust R8342 so that the" 1.188 PIC (10,29,BR/LW) "squarewave amplitude" 1.188 PIC (11,4,BR/LW) "in the acquisition stroke is minimal." 1.189 IEEE VER A,CPL ZERO[10][GTL] 1.190 DISP Set VERTICAL SHIFT ch.A to center trace on the screen. 1.191 IEEE HOR MTB,TIM .5E-03[10] 1.192 PIC 3320A33 (21,27,R/W) "<- Adjust R8139 to vertically " 1.192 PIC (21,57,R/W) "center the trace" 1.192 PIC (22,43,R/W) "on the screen." 1.193 PIC 3320A33 (14,8,R/W) "<- Measure the voltage at X3391" 1.193 PIC (14,40,R/W) "with the oscilloscope" 1.193 PIC (15,18,R/W) "(DC-coupled, external trigger)." 1.193 PIC (12,22,R/W) "<- Note the location of R8319" 1.194 DISP Position the intensified "line" on the trace on the 1.194 DISP measuring oscilloscope in the center or the screen. 1.195 IEEE TIM .2E-03,VER A,CPL DC[10] 1.196 PIC 3320FIG6(10,5,BR/LW)"Adjust R8319 to center one of two" 1.196 PIC (11,5,BR/LW) "lines a or b vertically on the screen." 1.197 IEEE CPL ZERO,HOR MTB,TIM .5E-03[10] 1.198 PIC 3320A33 (12,27,R/W) "<- Adjust R8339 to vertically " 1.198 PIC (12,57,R/W) "center the" 1.198 PIC (13,38,R/W) " trace on the screen." 1.199 HEAD 9.3.7 GAIN AND CORRECTION STROKE IN P^2CCD-MODE: ch.B 1.200 DISP Connect the CG5011 Pulse Head to UUT Channel B. 1.201 IEEE VER B,CPL ZERO,FCN ON,HOR MTB,TSO B,TIM .2E-03[10][GTL] 1.202 DISP Set VERTICAL SHIFT ch.B to vertically center the trace. 1.203 IEEE TIM .5E-03[10] 1.204 PIC 3320A33 (12,12,R/W) "<- Adjust R8359 to vertically " 1.204 PIC (12,42,R/W) "center the" 1.204 PIC (13,22,R/W) " trace on the screen." 1.205 IEEE VER B,CPL DC,ATT .5E+00[10][GTL] 1.206 5011 2Vpp 1kH -D S 1.207 DISP Set VERTICAL SHIFT ch.B to center trace on the screen. 1.208 PIC 3320A33 (13,11,R/W) "<- Adjust R8362 for a vertical" 1.208 PIC (13,42,R/W) "deflection of 4.00+/-0.05 div." 1.208 PIC (12,12,R/W) "<- Adjust R8359 to keep trace vertically" 1.208 PIC (12,53,R/W) "centered on the screen." 1.209 IEEE HOR MTB,TIM .2E-03[10] 1.210 PIC 3320A33 (8,12,R/W) "<- Measure the voltage at X3387 " 1.210 PIC (8,44,R/W) "with the oscilloscope." 1.210 PIC (13,15,R/W) "<- Note the location of R8382" 1.211 PIC 3320FIG5 (10,4,BR/LW) "Adjust R8382 so that the" 1.211 PIC (10,29,BR/LW) "squarewave amplitude" 1.211 PIC (11,4,BR/LW) "in the acquisition stroke is minimal." 1.212 IEEE VER B,CPL ZERO[10][GTL] 1.213 DISP Set VERTICAL SHIFT ch.B to center trace on the screen. 1.214 IEEE HOR MTB,TIM .5E-03[10] 1.215 PIC 3320A33 (12,12,R/W) "<- Adjust R8359 to vertically " 1.215 PIC (12,42,R/W) "center the" 1.215 PIC (13,22,R/W) " trace on the screen." 1.216 PIC 3320A33 (14,8,R/W) "<- Measure the voltage at X3391 " 1.216 PIC (14,40,R/W) "with the oscilloscope (DC-coupled)." 1.216 PIC (12,12,R/W) "<- Note the location of R8359." 1.217 DISP Position the intensified "line" on the trace on the 1.217 DISP measuring oscilloscope in the center or the screen. 1.218 IEEE TIM .2E-03,VER B,CPL DC[10] 1.219 PIC 3320FIG6(10,4,BR/LW)"Adjust R8359 to center one of two" 1.219 PIC (11,4,BR/LW) "lines a or b vertically on the screen." 1.220 IEEE CPL ZERO,HOR MTB,TIM .5E-03[10] 1.221 PIC 3320A33 (12,17,R/W) "<- Adjust R8379 to vertically " 1.221 PIC (12,47,R/W) "center the" 1.221 PIC (13,28,R/W) "Trace on the screen." 1.222 5011 * S 1.223 DISP Disconnect the oscilloscope from the UUT and 1.223 DISP reinstall the shielding plate on A33 (P^2CCD unit). 1.224 HEAD 9.3.7 GAIN 5V/div 1.225 DISP Connect the CG5011 Pulse Head to UUT Channel A and B 1.225 DISP using a BNC tee and equal length BNC cables. 1.226 5011 20Vpp 1kH -D S 1.227 IEEE SET AUT[10][D10000]MSC AUX,CHAN_ID ON, 1.227 IEEE VER A,CPL DC,VER B,CPL DC,VER B,FCN OFF[10][GTL] 1.228 PIC 3320A32 (8,45,R/W) "<- Adjust R5046 so that the ch.A" 1.228 PIC (9,51,R/W) "trace is 4.0+/-0.1 div." 1.229 IEEE FCN ON[10][GTL] 1.230 PIC 3320A32 (8,34,R/W) "<- Adjust R5146 so that the ch.B" 1.230 PIC (9,40,R/W) "trace is 4.0+/-0.1 div." 1.231 5011 * S 1.232 DISP Remove all connections. 1.233 HEAD 9.3.7 OFFSET SINGLE/DUAL CHANNEL 1.234 IEEE SET AUT[10][D6000]MSC AUX,CHAN_ID ON[10][GTL] 1.235 DISP Set VERTICAL SHIFT ch.A so trace is in middle of screen. 1.236 IEEE VER B,FCN ON[10][GTL] 1.237 DISP Set VERTICAL SHIFT ch.B so trace is in middle of screen. 1.238 IEEE CHP ON[10] 1.239 PIC 3320A33 (4,32,R/W) "<- Adjust R7515 so that the ch.A" 1.239 PIC (4,65,R/W) "trace is" 1.239 PIC (5,35,R/W) "in the vertical mid of the screen." 1.240 PIC 3320A33 (4,18,R/W) "<- Adjust R7715 so that the ch.B" 1.240 PIC (4,51,R/W) "trace is" 1.240 PIC (5,21,R/W) "in the vertical mid of the screen." 1.241 HEAD 9.3.7 OFFSET DUAL/ADD 1.242 IEEE VER ADD,FCN ON[10] 1.243 PIC 3320A33(4,37,R/W)"<- Adjust R7612 so that the trace is" 1.243 PIC (5,40,R/W) "in the vertical mid of the screen." 1.244 HEAD 9.3.7 OFFSET & GAIN MIN/MAX & P[253]CCD MODE: VERTICAL 2 1.245 IEEE SPL SERVICE,SERVICE 10,SERVICE UP,SERVICE UP[10] 1.246 DISP The instrument now switches between MIN/MAX mode on and 1.246 DISP MIN/MAX mode off. 1.246 DISP 1.246 DISP When MIN/MAX mode is off, two intensified traces are 1.246 DISP visible. The upper is ch.A and the lower is ch.B. 1.246 DISP 1.246 DISP When MIN/MAX mode is on, two low intensity traces are 1.246 DISP displayed for each channel (four total). 1.247 DISP If the adjustment for a channel is correct the two 1.247 DISP low intensity traces will appear superimposed and in the 1.247 DISP same position as the intensified trace for that channel. 1.247 DISP 1.247 DISP If the adjustment for a channel is incorrect, one or 1.247 DISP both of the low intensity traces will not be in the 1.247 DISP position as the intensified trace for that channel. 1.248 PIC 3320A33 (4,27,R/W) "<- Adjust R7583 &" 1.248 PIC (6,34,R/W) "<- R7566 so that the ch.A low intensity" 1.248 PIC (7,36,R/W) " traces are in the same position as the" 1.248 PIC (8,36,R/W) " ch.A intensified trace +/-0.1 div." 1.249 PIC 3320A33 (4,12,R/W) "<- Adjust R7783 &" 1.249 PIC (6,22,R/W) "<- R7766 so that the ch.B low intensity" 1.249 PIC (7,24,R/W) " traces are in the same position as the" 1.249 PIC (8,24,R/W) " ch.B intensified trace +/-0.1 div." 1.250 DISP Connect the CG5011 Pulse Head to UUT Channel A and B 1.250 DISP using a BNC tee and equal length BNC cables. 1.251 5011 1Vpp 1kH -D S 1.252 PIC 3320A33 (1,30,R/W) "<- Adjust R7606 to superimpose the" 1.252 PIC (1,65,R/W) "top levels" 1.252 PIC (2,40,R/W) "of the upper squareware +/-0.1 div." 1.253 PIC 3320A33 (2,36,R/W) "<- Adjust R7592 to superimpose the" 1.253 PIC (2,71,R/W) "bottom" 1.253 PIC (3,35,R/W) "levels of upper squareware +/-0.1 div." 1.254 PIC 3320A33 (1,18,R/W) "<- Adjust R7806 to superimpose the" 1.254 PIC (1,53,R/W) "top levels" 1.254 PIC (2,20,R/W) " of the lower squareware +/-0.1 div." 1.255 PIC 3320A33 (2,16,R/W) "<- Adjust R7792 to superimpose the" 1.255 PIC (2,51,R/W) "bottom" 1.255 PIC (3,18,R/W)" levels of the lower squareware +/-0.1 div." 1.256 5011 * S 1.257 DISP Disconnect the CG5011 from the UUT. 1.258 HEAD 9.3.7 OFFSET AND GAIN DIRECT MODE: ch.A, VERTICAL 3 1.259 IEEE SERVICE UP[10] 1.260 PIC 3320A33 (5,27,R/W) "<- Position the traces upon each" 1.260 PIC (5,60,R/W) "other with R7584." 1.261 DISP Connect the CG5011 Pulse Head to UUT Channel A. 1.262 5011 1Vpp 1kH -D S 1.263 PIC 3320A33 (1,36,R/W) "<- Adjust R7603 to equal amplitudes" 1.263 PIC (2,38,R/W) " displayed on the screen." 1.264 HEAD 9.3.7 OFFSET AND GAIN DIRECT MODE: ch.B, VERTICAL 4 1.265 IEEE SERVICE UP[10] 1.266 PIC 3320A33 (5,12,R/W) "<- Position the traces upon each" 1.266 PIC (5,45,R/W) "other with R7784." 1.267 5011 * S 1.268 DISP Connect the CG5011 Pulse Head to UUT Channel B. 1.269 5011 1Vpp 1kH -D S 1.270 PIC 3320A33 (1,12,R/W) "<- Adjust R7803 to equal amplitudes" 1.270 PIC (2,14,R/W) " displayed on the screen." 1.271 5011 * S 1.272 DISP Disconnect the CG5011 from the UUT. 1.273 HEAD 9.3.7 OFFSET VERTICAL AMPLIFIERS: VERTICAL 6 1.274 IEEE SERVICE UP,SERVICE UP[10] 1.275 PIC 3320A32 (17,51,R/W) "<- Adjust R5021 for minimal" 1.275 PIC (18,54,R/W) "jump on the upper trace." 1.276 PIC 3320A32 (17,40,R/W) "<- Adjust R5121 for minimal" 1.276 PIC (18,42,R/W) " jump on the lower trace." 1.277 HEAD 9.3.7 OFFSET VERTICAL AMPLIFIERS: VERTICAL 7 1.278 IEEE SERVICE UP[10] 1.279 PIC 3320A32 (16,51,R/W) "<- Adjust R5022 for minimal" 1.279 PIC (17,54,R/W) "jump on the upper trace." 1.280 PIC 3320A32 (16,40,R/W) "<- Adjust R5122 for minimal" 1.280 PIC (17,42,R/W) " jump on the lower trace." 1.281 HEAD 9.3.7 OFFSET VERTICAL AMPLIFIERS: VERTICAL 8 1.282 IEEE SERVICE UP[10] 1.283 PIC 3320A32 (15,51,R/W) "<- Adjust R5023 for minimal" 1.283 PIC (16,54,R/W) "jump on the upper trace." 1.284 PIC 3320A32 (15,40,R/W) "<- Adjust R5123 for minimal" 1.284 PIC (16,42,R/W) " jump on the lower trace." 1.285 HEAD 9.3.7 OFFSET VERTICAL AMPLIFIERS: VERTICAL 9 1.286 IEEE SERVICE UP[10] 1.287 PIC 3320A32 (14,51,R/W) "<- Adjust R5024 for minimal" 1.287 PIC (15,54,R/W) "jump on the upper trace." 1.288 PIC 3320A32 (14,40,R/W) "<- Adjust R5124 for minimal" 1.288 PIC (15,42,R/W) " jump on the lower trace." 1.289 IEEE SET AUT[10] 1.290 HEAD 9.3.8 LF SQUARE-WAVE RESPONSE ATTENUATOR UNIT: ch.A 1.291 DISP Connect the PM 5191 Output to UUT Channel A using 1.291 DISP the 1000:1 AC Divider, Fluke Part #7405A-4207. 1.292 5191 30Vpp 200H -D SQ S 1.293 IEEE SET AUT[10][D7000] 1.293 IEEE HOR MTB,TIM .5E-03,VER A,CPL DC,ATT 5E-03[10][GTL] 1.294 PIC 3320A35 (12,20,R/W) "<- Adjust R6850 on A27 for a" 1.294 PIC (12,49,R/W) "straight pulse" 1.294 PIC (13,23,R/W) "top with a deviation <=0.1 div." 1.295 5191 * S 1.296 DISP Connect the PM 5191 Output to UUT Channel A. 1.297 IEEE ATT 50E-03[10][GTL] 1.298 5191 300mVpp 200H -D SQ S 1.299 PIC 3320A35 (13,22,R/W) "<- Adjust R6817 on A27 for a" 1.299 PIC (13,51,R/W) "straight pulse" 1.299 PIC (14,25,R/W) "top with a deviation <=0.1 div." 1.300 IEEE ATT .5E+00[10][GTL] 1.301 5191 3Vpp 200H -D SQ S 1.302 PIC 3320A35 (12,23,R/W) "_ Adjust R6802 on A27 for a" 1.302 PIC (12,51,R/W) "straight pulse" 1.302 PIC (13,24,R/W) " top with a deviation <=0.1 div." 1.303 5191 * S 1.304 DISP Remove all connections. 1.305 HEAD 9.3.7 LF SQUARE-WAVE RESPONSE ATTENUATOR UNIT: ch.B 1.306 DISP Connect the PM 5191 Output to UUT Channel B using 1.306 DISP the 1000:1 AC Divider, Fluke Part #7405A-4207. 1.307 5191 30Vpp 200H -D SQ S 1.308 IEEE SET AUT[10][D9000] 1.308 IEEE HOR MTB,TIM .5E-03,VER B,CPL DC,ATT 5E-03[10][GTL] 1.309 PIC 3320A35 (12,12,R/W) "<- Adjust R6850 on A29 for a" 1.309 PIC (12,41,R/W) "straight pulse" 1.309 PIC (13,15,R/W) "top with a deviation <=0.1 div." 1.310 5191 * S 1.311 DISP Connect the PM 5191 Output to UUT Channel B. 1.312 IEEE ATT 50E-03[10][GTL] 1.313 5191 300mVpp 200H -D SQ S 1.314 PIC 3320A35 (13,14,R/W) "<- Adjust R6817 on A29 for a" 1.314 PIC (13,43,R/W) "straight pulse" 1.314 PIC (14,16,R/W) " top with a deviation <=0.1 div." 1.315 IEEE ATT .5E+00[10][GTL] 1.316 5191 3Vpp 200H -D SQ S 1.317 PIC 3320A35 (12,14,R/W) "_ Adjust R6802 on A29 for a" 1.317 PIC (12,42,R/W) "straight pulse" 1.317 PIC (13,15,R/W) " top with a deviation <=0.1 div." 1.318 5191 * S 1.319 DISP Disconnect the PM5191 from the UUT. 1.320 HEAD 9.3.8 HF SQUARE-WAVE RESPONSE: ch.A 1.321 DISP Connect the CG5011 Pulse Head to UUT Channel A. 1.322 5011 120mVpp 1MH -D E S L 1.323 IEEE SET AUT[10][D8000]HOR MTB,TIM 10E-09,TRD -2, 1.323 IEEE VER A,CPL DC,IMP LOW,ATT 20E-03[10][GTL] 1.324 PIC 3320A33 (4,30,R/W) "<- Note the locations of R7512 &" 1.324 PIC (5,33,R/W) "<- R7513 " 1.325 PIC 3320FIG7 (2,37,BR/LC) "Adjust R7512 & R7513 so that" 1.325 PIC (2,66,BR/LC) "overshoot +" 1.325 PIC (3,37,BR/LC) "ringing does not exceed +/-6% during the" 1.325 PIC (4,37,BR/LC) "first 10ns of the pulse." 1.326 5011 * S 1.327 HEAD 9.3.7 HF SQUARE-WAVE RESPONSE: ch.B 1.328 DISP Connect the CG5011 Pulse Head to UUT Channel B. 1.329 5011 120mVpp 1MH -D E S L 1.330 IEEE SET AUT[10][D9000] 1.330 IEEE VER B,CPL DC,IMP LOW,ATT 20E-03,HOR MTB,TIM 10E-09[10] 1.330 IEEE [GTL] 1.331 PIC 3320A33 (4,14,R/W) "<- Note the locations of R7712 & " 1.331 PIC (5,18,R/W) "<- R7713 " 1.332 PIC 3320FIG7 (2,37,BR/LC) "Adjust R7712 & R7713 so that" 1.332 PIC (2,66,BR/LC) "overshoot +" 1.332 PIC (3,37,BR/LC) "ringing does not exceed +/-6% during the" 1.332 PIC (4,37,BR/LC) "first 10ns of the pulse." 1.333 IEEE HOR MTB,TRD +0[10] 1.334 5011 * S 1.335 DISP Disconnect the CG5011 from the UUT. 1.336 HEAD 9.3.9 DELTA-T 1.337 DISP Connect the 6060B RF Output to UUT Channel A. 1.338 6060 600mVpp 50MH -D S 1.339 IEEE SET AUT[10][D13000] 1.339 IEEE VER A,ATT .1E+00,HOR MTB,TIM 5E-09,MSC AUX,DOT ON[10] 1.340 PIC 3320A34(16,27,R/W)"<- Adjust 8607 so that a continuous" 1.340 PIC (17,29,R/W) " smooth sine-wave signal is displayed." 1.341 IEEE MSC AUX,WRT ON[10] 1.342 DISP Verify that the displayed sine-wave stayed without 1.342 DISP discontinuities. 1.343 6060 * S 1.344 DISP Disconnect the 6060B from the UUT. 1.345 IEEE VER A,IMP HIGH,VER B,IMP HIGH[10][GTL] 1.346 HEAD 9.3.10 AC/DC BALANCE EXT TRIG INPUT: TRIGGER 0 1.347 DISP Connect the PM 5191 Output to UUT Channel A 1.347 DISP and EXT TRIG using a BNC tee. 1.348 5191 600mVpp 100H -D SI S 1.349 IEEE SPL SERVICE,SERVICE 11[10] 1.350 PIC 3320A32 (20,34,R/W) "Adjust R7022 so that the trigger" 1.350 PIC (21,42,R/W) "point shift is <=0.1 div." 1.351 5191 * S 1.352 HEAD 9.3.10 AC/DC BAL INT TRIGGERING VIA A & B: TRIGGER 1 1.353 IEEE SERVICE UP[10] 1.354 DISP Connect the PM 5191 Output to UUT Channel A and B 1.354 DISP using a BNC tee and equal length BNC cables. 1.355 5191 600mVpp 100H -D SI S 1.356 PIC 3320A32 (18,46,R/W) " Adjust R5030 so that the trigger" 1.356 PIC (19,46,R/W) " point shift is <=0.1 div." 1.357 HEAD 9.3.10 AC/DC BAL INT TRIGGERING VIA A & B: TRIGGER 2 1.358 IEEE SERVICE UP[10] 1.359 PIC 3320A32 (18,35,R/W) " Adjust R5130 so that the trigger" 1.359 PIC (19,35,R/W) " point shift is <=0.1 div." 1.360 HEAD 9.3.10 HF REJ BALANCE: TRIGGER 3 1.361 IEEE SERVICE UP[10] 1.362 PIC 3320A32(20,21,R/W)"<- Adjust R7019 so that the trigger" 1.362 PIC (21,23,R/W) " point shift is <=0.1 div." 1.363 5191 * S 1.364 HEAD 9.3.10 AUTO TRIGGERING: TRIGGER 4 1.365 IEEE SERVICE UP[10] 1.366 DISP Connect the PM 5191 Output to UUT Channel A. 1.367 5191 120mVpp 100H -D SI S 1.368 PIC 3320A1 (15,15,R/W) "Adjust R2533 so that the vertical " 1.368 PIC (16,15,R/W) "deviation of the dot from the " 1.368 PIC (17,15,R/W) "center of the screen is <=0.1 div. " 1.369 PIC 3320A32 (20,16,R/W) "_ Set R7046 fully CCW" 1.370 PIC 3320A32(15,21,R/W)"<- Adjust R7084 so that the trigger" 1.370 PIC (15,57,R/W) "gap lies exactly in" 1.370 PIC (16,23,R/W) " the mid between the top and bottom level" 1.370 PIC (16,65,R/W) "of the signal." 1.371 5191 5mVpp 100H -D SI S 1.372 PIC 3320A32 (13,20,R/W) "<- Adjust R7156 for a correctly" 1.372 PIC (13,52,R/W) "triggered display." 1.373 HEAD 9.3.10 LEVEL SENSITIVITY: TRIGGER 4 1.374 5191 5mVpp 100H -D SI S 1.375 PIC 3320A32 (20,16,R/W) "_ Adjust R7046 so that the signal" 1.375 PIC (20,50,R/W) "is just triggered." 1.376 HEAD 9.3.10 AUTO/DC BALANCE: TRIGGER 5 1.377 IEEE SERVICE UP[10] 1.378 5191 600mVpp 100H -D SI S 1.379 PIC 3320A32 (20,24,R/W) "_ Adjust R7036 so that the trigger" 1.379 PIC (20,59,R/W) "point" 1.379 PIC (21,46,R/W) "shift is <=0.1 div." 1.380 HEAD 9.3.10 DUAL TRIGGERING: TRIGGER 6 1.381 IEEE SERVICE UP[10] 1.382 PIC 3320A1 (15,15,R/W) " Adjust R2533 to vertically center " 1.382 PIC (16,15,R/W) " the trace on the screen " 1.383 MESS Adjust the frequency so that the trigger slope flashes 1.383 MESS between positive and negative triggering. 1.384 5191 100H 600mVpp -D SI N 1.385 MESS 1.386 PIC 3320A32 (15,13,R/W) "<- Adjust R7116 so that the gap" 1.386 PIC (15,44,R/W) " between" 1.386 PIC (16,15,R/W) " pos and neg slope is minimal." 1.387 PIC 3320A32 (15,15,R/W) "<- Adjust R7129 so the vertical" 1.387 PIC (15,46,R/W) " symmetry between positive and" 1.387 PIC (16,17,R/W) " negative slope in vertical mid of the" 1.387 PIC (16,56,R/W) "screen is +/-0.1 div." 1.388 5191 * S 1.389 HEAD 9.3.10 EVENTS/CLOCK +/- SLOPE BALANCE 1.390 DISP Connect the PM 5191 Output to UUT Channel A and 1.390 DISP EVENTS using a BNC tee and equal length BNC cables. 1.391 5191 50mVpp 100H -D SI S 1.392 IEEE SET AUT[10][D10000]VER A,ATT 20E-03,HOR MTB,TIM 1E-03, 1.392 IEEE CPL DC,LEV 0[10][GTL] 1.393 DISP Set TRIGGER DELAY to EVNT+DELAY. 1.394 PIC 3320A32 (3,22,R/W) " Toggle TRIGGER SLOPE between" 1.394 PIC (3,51,R/W) " POSITIVE and NEGATIVE while" 1.394 PIC (4,20,R/W) "<- adjusting R7159 for minimal trigger gap" 1.394 PIC (4,63,R/W) "and R7158 for" 1.394 PIC (5,22,R/W) " maximal trigger symmetry (around" 1.394 PIC (5,56,R/W) "vertical mid of screen)." 1.395 5191 * S 1.396 DISP Disconnect the PM5191 from the UUT. 1.397 HEAD 9.3.4 COMPENSATION OF CRT TOLERANCES: DISPLAY 3 1.398 IEEE SPL SERVICE,SERVICE 12,SERVICE UP,SERVICE UP, 1.398 IEEE SERVICE UP[10] 1.399 PIC 3320A1 (15,15,R/W) " Adjust R2533 so the trace is" 1.399 PIC (15,44,R/W) " centered " 1.399 PIC (16,15,R/W) " vertically on the screen +/-0.1 div. " 1.400 IEEE SET AUT[10] 1.401 HEAD 9.3.10 LF SQUARE-WAVE RESPONSE EXT AND EVENTS 1.402 DISP Connect the CG5011 Pulse Head to UUT EXT TRIG. 1.403 PIC 3320A32 (22,43,R/W) "Connect the probe of the measuring" 1.403 PIC (23,43,R/W) "oscilloscope to pin 1 of A40." 1.404 DISP Set the measuring scope to 100mV/div and 10us/div. 1.405 5011 3Vpp 10kH -D S 1.406 IEEE HOR MTB,TSO EXT[10] 1.407 PIC 3320A31(13,17,R/W)"<- Adjust R4751 for a straight pulse" 1.407 PIC (14,19,R/W) " top on the measuring oscilloscope." 1.408 5011 30Vpp 10kH -D S 1.409 IEEE TSO EXD[10] 1.410 PIC 3320A31(13,19,R/W)"<- Adjust R4753 for a straight pulse" 1.410 PIC (14,21,R/W) " top on the measuring oscilloscope." 1.411 5011 * S 1.412 DISP Connect the CG5011 Pulse Head to UUT EVENTS/EXT CLOCK. 1.413 PIC 3320A32 (7,21,R/W) " Connect the probe of the measuring" 1.413 PIC (8,21,R/W) " oscilloscope to pin 1 of A43." 1.414 5011 3Vpp 10kH -D S 1.415 PIC 3320A31(13,31,R/W)"<- Adjust R4851 for a straight pulse" 1.415 PIC (14,33,R/W) " top on the measuring oscilloscope." 1.416 5011 * S 1.417 DISP Remove all connections. 1.418 HEAD 9.3.5 P^2CCD PRE-ADJUSTMENT 1.419 DISP Remove the shielding plate from A33 (P^2CCD unit). 1.420 DISP Connect the PM 5191 Output to UUT Channel A and B 1.420 DISP using a BNC tee and equal length BNC cables. 1.421 5191 600mVpp 1kH -D TI S 1.422 IEEE SET AUT[10][D9000]VER A,ATT .1E+00,VER B,ATT .1E+00[10] 1.423 HEAD 9.3.5 LEVEL OF THRESHOLD GATE: ch.A 1.424 PIC 3320A33(16,40,R/W)"Connect the 8842A INPUT HI to pin 10" 1.424 PIC (17,40,R/W) "on A46 and INPUT LO to chassis ground." 1.424 PIC (22,35,R/W) "<- Note the location of R7953" 1.425 MESS Adjust R7953 for an 8842A 1.425 MESS reading of 6.0+/-0.1V. 1.426 8842 6V S 2W 1.427 MATH MEM1 = MEM1 - 6 1.428 JMPZ 1.430 0.1U 1.429 JMP 1.424 1.430 HEAD 9.3.5 LEVEL OF TRESHOLD GATE: ch.B 1.431 PIC 3320A33(16,40,R/W)"Connect the 8842A INPUT HI to pin 10" 1.431 PIC (17,40,R/W) "on A47 and INPUT LO to chassis ground." 1.431 PIC (22,17,R/W) "<- Note the location of R8153" 1.432 MESS Adjust R8153 for an 8842A 1.432 MESS reading of 6.0+/-0.1V. 1.433 8842 6V S 2W 1.434 MATH MEM1 = MEM1 - 6 1.435 JMPZ 1.437 0.1U 1.436 JMP 1.431 1.437 HEAD 9.3.5 DC LEVEL OF SIGNAL GATE: ch.A 1.438 PIC 3320A33(16,40,R/W)"Connect the 8842A INPUT HI to pin 6" 1.438 PIC (17,40,R/W) "on A46 and INPUT LO to chassis ground." 1.438 PIC (22,29,R/W) "<- Note the location of R7959" 1.439 MESS Adjust R7959 for an 8842A 1.439 MESS reading of 5.5+/-0.1V. 1.440 8842 5.5V S 2W 1.441 MATH MEM1 = MEM1 - 5.5 1.442 JMPZ 1.444 0.1U 1.443 JMP 1.438 1.444 HEAD 9.3.5 DC LEVEL OF SIGNAL GATE: ch.B 1.445 PIC 3320A33(16,40,R/W)"Connect the 8842A INPUT HI to pin 6" 1.445 PIC (17,40,R/W) "on A47 and INPUT LO to chassis ground." 1.445 PIC (22,11,R/W) "<- Note the location of R8159" 1.446 MESS Adjust R8159 for an 8842A 1.446 MESS reading of 5.5V +/-0.1V. 1.447 8842 5.5V S 2W 1.448 MATH MEM1 = MEM1 - 5.5 1.449 JMPZ 1.451 0.1U 1.450 JMP 1.445 1.451 MESS 1.452 8842 * S 1.453 DISP Disconnect the 8842A from the UUT. 1.454 HEAD 9.3.5 BIAS CHARGE: ch.A 1.455 PIC 3320A26 (8,49,R/W) "Connect the external trigger" 1.455 PIC (9,49,R/W) "input of the measuring" 1.455 PIC (10,49,R/W) "oscilloscope to X2631." 1.456 PIC 3320A33 (14,23,R/W) "<- Measure the voltage at X3382" 1.456 PIC (14,55,R/W) "with the oscilloscope" 1.456 PIC (15,34,R/W) "(AC-coupled, external trigger)." 1.456 PIC (21,38,R/W) "<- Note the location of R7939" 1.457 PIC 3320FIG4(10,5,BR/LW)"Adjust R7939 to that the distance" 1.457 PIC (10,39,BR/LW) "between level a and b" 1.457 PIC (11,5,BR/LW) "during the correction stroke shown above" 1.457 PIC (11,46,BR/LW) "is 400+/-20mV." 1.458 HEAD 9.3.5 BIAS CHARGE: ch.B 1.459 PIC 3320A33 (14,14,R/W) "<- Measure the voltage at X3384" 1.459 PIC (14,46,R/W) "with the oscilloscope" 1.459 PIC (15,26,R/W) "(AC-coupled, external trigger)." 1.459 PIC (21,27,R/W) "<- Note the location of R8139" 1.460 PIC 3320FIG4(10,5,BR/LW)"Adjust R8139 to that the distance" 1.460 PIC (10,39,BR/LW) "between level a and b" 1.460 PIC (11,5,BR/LW) "during the correction stroke shown above" 1.460 PIC (11,46,BR/LW) "is 400+/-20mV." 1.461 HEAD 9.3.5 P^2CCD OUTPUT CIRCUITS 1.462 PIC 3320A33 (14,40,R/W) "Set R8362, R8382, R8322, & R8342" 1.462 PIC (15,40,R/W) "in their mid position." 1.463 PIC 3320A33 (14,8,R/W) "<- Measure the voltage at X3391" 1.463 PIC (14,40,R/W) "with the oscilloscope" 1.463 PIC (15,20,R/W) "(DC-coupled, external trigger)." 1.463 PIC (10,2,R/W) "Note the locations of " 1.463 PIC (10,24,R/W) "R8359, R8379, R8319, & R8339" 1.464 PIC 3320FIG4 (10,5,BR/LW) "Adjusting R8359, R8379, R8319," 1.464 PIC (10,36,BR/LW) "& R8339 each influences" 1.464 PIC (11,5,BR/LW) "a level during the correction stroke." 1.464 PIC (11,43,BR/LW) "Adjust these four" 1.464 PIC (12,5,BR/LW) "levels to 0V with these potentiometers." 1.465 5191 * S 1.466 IEEE [GTL] 1.467 HEAD CONCLUSION OF THE PROCEDURE. 1.468 DISP Disconnect all leads from the calibration system first 1.468 DISP and then from the UUT. 1.468 DISP Switch off the UUT and disconnect it from line power. 1.468 DISP NOTE: When reinstalling the top and bottom covers, take 1.468 DISP care that the wiring (coaxial cables and flat cables) is 1.468 DISP not damaged. 1.469 END