Fluke MET/CAL Procedure ============================================================================= INSTRUMENT: Philips PM 3320A: CAL ADJ IEEE /5500+SC300,8842 DATE: 02-Oct-97 AUTHOR: Fluke REVISION: $Revision: 1.1 $ ADJUSTMENT THRESHOLD: 70% NUMBER OF TESTS: 1 NUMBER OF LINES: 813 CONFIGURATION: Fluke 8842A CONFIGURATION: Fluke 5500A (SC) ============================================================================= #CONFIGURATION: Bench Oscilloscope STEP FSC RANGE NOMINAL TOLERANCE MOD1 MOD2 3 4 CON 1.001 DISP This procedure was "cloned" from a CG 5011 based 1.001 DISP procedure that was tested with the UUT. However, this 1.001 DISP procedure has not been tested with the UUT. 1.002 ASK- D N P J F W 1.003 IEEE [SRQ OFF] 1.004 HEAD 9.1 GENERAL INFORMATION 1.005 DISP The following information provides the complete 1.005 DISP adjusting procedure for the instrument. As various 1.005 DISP control functions are interdependent, a certain order 1.005 DISP of adjustment is necessary. The procedure is, therefore, 1.005 DISP presented in a sequence which is best suited to this 1.005 DISP order, cross-reference being made to any circuit which 1.005 DISP may affect a particular adjustment. 1.006 DISP Before any adjustment, the instrument must attain its 1.006 DISP normal operating temperature. 1.006 DISP 1.006 DISP Warming-up time under average conditions is 30 min. 1.007 DISP Tolerances given are for the instrument under test and 1.007 DISP do not include test equipment error. 1.007 DISP 1.007 DISP The most accurate display adjustments are make with a 1.007 DISP stable, well-focused low intensity display. 1.007 DISP 1.007 DISP All controls that are mentioned without item numbers are 1.007 DISP located on the outside of the instrument. 1.008 HEAD WARNING: 1.009 DISP The opening of covers or removal of parts, except those 1.009 DISP to which access can be gained by hand, is likely to 1.009 DISP expose live parts, and also accessible terminals may be 1.009 DISP live. The instrument shall be disconnected from all 1.009 DISP voltage sources before any adjustment, replacement or 1.009 DISP maintenance and repair during which the instrument will 1.009 DISP be opened. 1.010 DISP If afterwards any adjustment, maintenance or repair of 1.010 DISP the opened instrument under voltage is inevitable, it 1.010 DISP shall be carried out only by a qualified person who is 1.010 DISP aware of the hazard involved. Bear in mind that 1.010 DISP capacitors inside the instrument may still be charged 1.010 DISP even if the instrument has been separated from all 1.010 DISP voltage sources. 1.011 HEAD 9.3 ADJUSTING PROCEDURE 1.012 DISP NOTE: Always use an insulated adjustment tool. 1.013 HEAD 5.2 REMOVING THE COVERS 1.014 DISP The instrument is protected by three covers: a front 1.014 DISP protection cover, a top cover and a bottom cover. To 1.014 DISP facilitate the removal of the instrument's covers, first 1.014 DISP put the fromt protection cover in postition. The proceed 1.014 DISP as follows: 1.014 DISP 1.014 DISP Hinge the carrying handle clear of the front protection 1.014 DISP cover. 1.015 DISP Stand the instrument on its protective front cover on a 1.015 DISP flat surface. 1.015 DISP 1.015 DISP Unscrew the two screws present in the left foot and the 1.015 DISP two screws in the right foot at the rear panel and 1.015 DISP remove these feet. 1.016 DISP The top cover and the bottom cover (without carrying 1.016 DISP handle) can be removed by shifting them backwards and 1.016 DISP lifting them free of the instrument. 1.017 DISP Connect the UUT to line power and switch it on. 1.018 HEAD 9.3.2 POWER SUPPLY ADJUSTMENTS 1.019 PIC 3320A20 (10,20,R/W) "Connect the 8842A Input Hi to" 1.019 PIC (11,20,R/W) "X4609 and Input Lo to X4611." 1.020 PIC 3320A20 (6,3,R/W) "Note the location of R4607" 1.021 MESS Adjust R4607 for an 8842A 1.021 MESS reading of 10V +/-0.1V. 1.022 8842 10V S 2W 1.023 PIC 3320A33 (7,48,R/W) "Connect the 8842A Input Hi to" 1.023 PIC (8,48,R/W) "X2517 and Input Lo to X2518." 1.024 PIC 3320A33 (5,44,R/W) "<- Note the location of R462" 1.025 MESS Adjust R462 for an 8842A reading of 5V +/-0.1V. 1.026 8842 5V S 2W 1.027 MESS 1.028 DISP Disconnect the 8842A from the UUT. 1.029 HEAD 9.3.3 CRT ADJUSTMENTS 1.030 PIC 3320A1 (6,16,R/W) " NOTE " 1.030 PIC (7,16,BL/W) "In the case that your instrument " 1.030 PIC (8,16,BL/W) "is completely misadjusted or after" 1.030 PIC (9,16,BL/W) "exchange of A1 it is recommended " 1.030 PIC (10,16,BL/W) "to turn R2658, R2659, R2678 and " 1.030 PIC (11,16,BL/W) "and R2682 completey CCW. Moreover " 1.030 PIC (12,16,BL/W) "it may be necessary to position " 1.030 PIC (13,16,BL/W) "the CRT text by means of: " 1.030 PIC (14,16,BL/W) " R2513 (vertical gain) " 1.030 PIC (15,16,BL/W) " R2533 (vertical position) " 1.030 PIC (16,16,BL/W) " R2566 (horizontal gain) " 1.030 PIC (17,16,BL/W) " R2571 (horizontal position) " 1.031 HEAD 9.3.3 CRT INTENSITY: DISPLAY 0 1.032 IEEE [SPL][SRQ ON] 1.033 IEEE SPL SERVICE,SERVICE 12[10] 1.034 DISP Set INTENS TRACE and INTENS TEXT controls 90 degrees 1.034 DISP from their CCW stop. 1.035 PIC 3320A1 (4,15,R/W) "Adjust R2637 so that the pattern" 1.035 PIC (5,15,R/W) "and the text are just visible." 1.036 HEAD 9.3.3 CRT FOCUS & ASTIGMATISM: DISPLAY 0 1.037 DISP Set FOCUS, INTENS TRACE and INTENS TEXT controls to 1.037 DISP their mid-position. 1.038 PIC 3320A1 (5,15,R/W) "Adjust R2609 and R2832 for a sharp" 1.038 PIC (6,17,R/W) "and wellSCefined test pattern." 1.039 HEAD 9.3.3 CRT TRACE ROTATION: DISPLAY 0 1.040 DISP Adjust front panel TRACE ROTATION 1.040 DISP so that the horizontal line on the C.R.T is exactly in 1.040 DISP line with the horizontal graticule lines. 1.041 HEAD 9.3.4 VERTICAL BALANCE: DISPLAY 1 1.042 IEEE SERVICE UP[10] 1.043 PIC 3320A1 (21,19,R/W) "<- Note the location of R2334" 1.044 PIC 3320FIG1 (1,60,R/W) "Now the display" 1.044 PIC (2,60,R/W) "switches between" 1.044 PIC (3,60,R/W) "two patterns of" 1.044 PIC (4,60,R/W) "which one is like" 1.044 PIC (5,60,R/W) "like the picture." 1.044 PIC (7,60,R/W) "Adjust R2334 so" 1.044 PIC (8,60,R/W) "that the vertical" 1.044 PIC (9,60,R/W) "jump of the small" 1.044 PIC (10,60,R/W) "horizontal lines" 1.044 PIC (11,60,R/W) "is <=0.1 div." 1.045 HEAD 9.3.4 VARIABLE HORIZONTAL GAIN BALANCE: DISPLAY 2 1.046 IEEE SERVICE UP[10] 1.047 PIC 3320A1 (15,15,R/W) "Adjust R2377 so that the horizontal" 1.047 PIC (16,15,R/W) "jump of the dot in the center of " 1.047 PIC (17,15,R/W) "the screen is <=0.1 div. " 1.048 HEAD 9.3.4 COMPENSATION OF CRT TOLERANCES: HORZ, DISPLAY 3 1.049 IEEE SERVICE UP[10] 1.050 PIC 3320A1 (15,15,R/W) "Adjust R2571 so that the horizontal" 1.050 PIC (16,15,R/W) "deviation of the dot from the " 1.050 PIC (17,15,R/W) "center of the screen is <=0.1 div. " 1.051 HEAD 9.3.4 COMPENSATION OF CRT TOLERANCES: VERT, DISPLAY 3 1.052 PIC 3320A1 (15,15,R/W) "Adjust R2533 so that the vertical " 1.052 PIC (16,15,R/W) "deviation of the dot from the " 1.052 PIC (17,15,R/W) "center of the screen is <=0.1 div. " 1.053 HEAD 9.3.4 VERTICAL GAIN: x5, DISPLAY 4 1.054 IEEE SERVICE UP[10] 1.055 PIC 3320A1 (15,15,R/W) "Adjust R2531 so that the vertical " 1.055 PIC (16,15,R/W) "distance between the two horizontal" 1.055 PIC (17,15,R/W) "lines is 8.0+/-0.1 div. " 1.056 HEAD 9.3.4 VERTICAL GAIN: x1, DISPLAY 5 1.057 IEEE SERVICE UP[10] 1.058 PIC 3320A1 (17,15,R/W) "<- Note the position of R2513 " 1.059 PIC 3320FIG1 (8,60,R/W) "Adjust R2513 so" 1.059 PIC (9,60,R/W) "that the vertical" 1.059 PIC (10,60,R/W) "distance between" 1.059 PIC (11,60,R/W) "the two horizontal" 1.059 PIC (12,60,R/W) "lines c & d is" 1.059 PIC (13,60,R/W) "8.0+/-0.1 div." 1.060 HEAD 9.3.4 VERTICAL GAIN: /5, DISPLAY 6 1.061 IEEE SERVICE UP[10] 1.062 PIC 3320A1 (16,15,R/W) "<- Note the position of R2516 " 1.063 PIC 3320FIG2 (8,62,R/W) "Adjust R2516 so" 1.063 PIC (9,62,R/W) "that the vertical" 1.063 PIC (10,62,R/W) "distance between" 1.063 PIC (11,62,R/W) "the two horizontal" 1.063 PIC (12,62,R/W) "lines a & b is" 1.063 PIC (13,62,R/W) "8.0+/-0.1 div." 1.064 HEAD 9.3.4 HORIZONTAL GAIN: DISPLAY 5 1.065 IEEE SERVICE DOWN[10] 1.066 PIC 3320A1 (15,15,R/W) "<- Note the position of R2566 " 1.067 PIC 3320FIG1 (8,60,R/W) "Adjust R2566 so" 1.067 PIC (9,60,R/W) "that the distance" 1.067 PIC (10,60,R/W) "between the start-" 1.067 PIC (11,60,R/W) "ing points of the" 1.067 PIC (12,60,R/W) "small horizontal" 1.067 PIC (13,60,R/W) "lines a & b is" 1.067 PIC (14,60,R/W) "10.0+/-0.1 div." 1.068 HEAD 9.3.4 OVERSCAN SUPPRESSION: DISPLAY 7 1.069 IEEE SERVICE UP,SERVICE UP[10] 1.070 PIC 3320FIG3 1.071 PIC 3320A1 (11,15,R/W) "Adjust R2678 so that the test " 1.071 PIC (12,15,R/W) "pattern in the left-hand side of " 1.071 PIC (13,15,R/W) "the screen is just at its biggest. " 1.072 PIC 3320A1 (9,15,R/W) "Adjust R2682 so that the test " 1.072 PIC (10,15,R/W) "pattern in the right-hand side of " 1.072 PIC (11,15,R/W) "the screen is just at its biggest. " 1.073 PIC 3320A1 (10,15,R/W) "Adjust R2658 so that the test " 1.073 PIC (11,15,R/W) "pattern in the bottom 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 PIC 3320A1 (10,15,R/W) "Adjust R2659 so that the test " 1.074 PIC (11,15,R/W) "pattern in the top side of the " 1.074 PIC (12,15,R/W) "screen lies 0.1 div. outside the " 1.074 PIC (13,15,R/W) "graticule of the screen. " 1.075 IEEE SET AUT[10] 1.076 HEAD 9.3.5 P^2CCD PRE-ADJUSTMENT 1.077 OPBR NOTE: The following steps must only be done if the 1.077 OPBR instrument is completely misadjusted or after 1.077 OPBR replacement of A33. 1.077 OPBR Do you wish to perform the adjustments? 1.078 JMPF 1.115 1.079 HEAD 9.3.10 AUTO OFFSET LEVEL 1.080 DISP Connect the 5500A Scope Output to UUT Channel A. 1.081 PIC 3320A32 (9,16,R/W) "<- Connect the 8842A to X7007 and " 1.081 PIC (10,26,R/W) " chassis ground. " 1.082 5500 100mVpp 1kH SI SC S 1.083 IEEE SET AUT[10][D9000]VER A,ATT .1E+00[10] 1.084 PIC 3320A32 (13,16,R/W) "<- Note the location of R7052 " 1.085 MESS Adjust R7052 for an 8842A reading of 0.0+/-0.1V. 1.086 8842 0V S 2W 1.087 MESS 1.088 5500 * S 1.089 DISP Disconnect the 5500A from the UUT. 1.090 HEAD 9.3.11 OUTPUT VOLTAGE CALIBRATION GENERATOR 1.091 DISP Connect the 8842A INPUT to UUT CAL Output. 1.092 PIC 3320A1 (22,15,R/W) "<- Note the location of R2703 " 1.093 MESS Adjust R2703 for an 8842A reading of 500mV. 1.094 8842 500mV 2kH S 2W 1.095 MESS 1.096 DISP Disconnect the 8842A from the UUT. 1.097 HEAD 9.3.12 PLOT OUTPUT: VERTICAL 1.098 DISP Plug the plot cable into the DIN plot output socket at 1.098 DISP the rear of the instrument. 1.099 DISP Connect the UUT CAL Output to UUT Channel A and B. 1.100 IEEE SET AUT[10][GTL] 1.101 DISP Set VERTICAL SHIFT ch.A and ch.B to vertically center 1.101 DISP the two square waves on the screen. 1.102 IEEE VER A,ATT .1E+00,VER B,ATT .1E+00, 1.102 IEEE MSC R0,YVX ON,DSP ON,PLOTTIME 200[10] 1.103 DISP Connect the 8842A to the UUT as follows: 1.103 DISP [32] 8842A INPUT HI to UUT VERT PLOT OUTPUT HI (RED) 1.103 DISP [32] 8842A INPUT LO to UUT PLOT OUTPUT LO (BLACK) 1.104 IEEE PLT ANALOG[10] 1.105 MESS The oscilloscope starts the plot action. This can be 1.105 MESS seen because the dot moves from left to right on the 1.105 MESS bottom of the screen. 1.105 MESS Adjust R2738 on A1 for maximum 8842A reading of 1000mV. 1.106 8842 1000mV S 2W 1.107 IEEE PLT OFF[10] 1.108 HEAD 9.3.12 PLOT OUTPUT: HORIZONTAL 1.109 DISP Connect the 8842A to the UUT as follows: 1.109 DISP [32] 8842A INPUT HI to UUT HORZ PLOT OUTPUT HI (BLUE) 1.109 DISP [32] 8842A INPUT LO to UUT PLOT OUTPUT LO (BLACK) 1.110 IEEE PLT ANALOG[10] 1.111 MESS The oscilloscope starts the plot action. This can be 1.111 MESS seen because the dot moves from left to right on the 1.111 MESS bottom of the screen. 1.111 MESS Adjust R2728 on A1 for maximum 8842A reading of 1000mV. 1.112 8842 1000mV S 2W 1.113 MESS 1.114 IEEE PLT OFF;PLOTTIME 20,SET AUT[10][D9000][GTL] 1.115 HEAD 9.3.6 CORRECTION CIRCUIT 1.116 MATH M[3] = 0.1 1.117 PIC 3320A1 (2,50,R/W) "<- Turn potentiometer R721 " 1.117 PIC (3,60,R/W) "fully CCW " 1.118 IEEE VER A,IMP LOW,ATT .1E+00,POS CAL, 1.118 IEEE VER B,IMP LOW,ATT .1E+00[10] 1.119 DISP Connect the 5500A Scope Output to UUT Channel A. 1.120 IEEE SET AUT[10][D9000]HOR MTB,TIM 10E-06[10][GTL] 1.121 5500 100 600mVpp 50kH SI SC N L 1.122 5500 mVpp 1MH SI SC S L 1.123 IEEE TIM .5E-06[10][GTL] 1.124 MEMI Enter the amplitude (pp) in divisions. 1.125 MATH M[1] = MEM - 6 1.126 MATH MEM1 = M[1] 1.127 JMPF 1.131 1.128 MATH MEM1 = M[1] - M[3] 1.129 JMPT 1.134 1.130 JMP 1.137 1.131 MATH MEM1 = M[1] + M[3] 1.132 JMPF 1.134 1.133 JMP 1.137 1.134 MATH MEM = 2 * M[1] + 6 1.135 DISP Adjust R721 on A11 for an 1.135 DISP amplitude of [MEM] div. 1.136 JMP 1.120 1.137 DISP Connect the 5500A Scope Output to UUT Channel B. 1.138 IEEE VER A,POS 1000,VER B,POS CAL, 1.138 IEEE HOR MTB,TSO B,TIM 10E-06[10][GTL] 1.139 IEEE SET AUT[10][D11000][GTL] 1.140 5500 100 600mVpp 50kH SI SC N L 1.141 5500 mVpp 1MH SI SC S L 1.142 IEEE TIM .5E-06[10][GTL] 1.143 MEMI Enter the amplitude (pp) in divisions. 1.144 MATH M[2] = MEM - 6 1.145 MATH MEM1 = MEM - 6 1.146 JMPF 1.150 1.147 MATH MEM1 = M[2] - 0.1 1.148 JMPT 1.153 1.149 JMP 1.155 1.150 MATH MEM1 = M[2] + 0.1 1.151 JMPF 1.153 1.152 JMP 1.155 1.153 MATH M[3] = (M[1] + M[2]) / 2 1.154 JMP 1.119 1.155 MESS 1.156 5500 * S 1.157 DISP Remove all connections. 1.158 ASK- F 1.159 IEEE VER A,IMP HIGH,VER B,IMP HIGH[10] 1.160 HEAD 9.3.7 OFFSET OF ATTENUATORS: ch.A, VERTICAL 0 1.161 IEEE SPL SERVICE,SERVICE 10[10] 1.162 PIC 3320A35 (3,26,R/W) "Adjust R7451 so that the jump" 1.162 PIC (4,26,R/W) "of the upper trace is minimal." 1.163 HEAD 9.3.7 OFFSET OF ATTENUATORS: ch.B, VERTICAL 0 1.164 PIC 3320A35 (3,26,R/W) "Adjust R7454 so that the jump" 1.164 PIC (4,26,R/W) "of the lower trace is minimal." 1.165 IEEE SET AUT[10] 1.166 HEAD 9.3.7 GAIN IN A/B DIRECT MODE 1.167 DISP Connect the 5500A Scope Output to UUT Channel A and B 1.167 DISP using a BNC tee and equal length BNC cables. 1.168 5500 2Vpp 1kH SI SC S 1.169 IEEE SET AUT[10][D11000]HOR MTB,TIM 2E-03,VER ADD,FCN ON, 1.170 IEEE VER A,CPL DC,ATT .5E+00,VAR CAL,FCN OFF, 1.170 IEEE VER B,CPL DC,ATT .5E+00,VAR CAL,FCN OFF,INV ON[10] 1.171 PIC 3320A32 (20,35,R/W) "Adjust R5102 for a signal display" 1.171 PIC (20,69,R/W) "<=0.1 div." 1.172 IEEE INV OFF[10][GTL] 1.173 5500 * S 1.174 DISP Remove all connections. 1.175 HEAD 9.3.7 GAIN AND CORRECTION STROKE IN P^2CCD-MODE: ch.A 1.176 DISP Remove the shielding plate from A33 (P^2CCD unit). 1.176 DISP Put the instrument upside down, so that the P^2CCDs 1.176 DISP achieve the correct temperature. 1.177 DISP Connect the 5500A Scope Output to UUT Channel A. 1.178 IEEE VER A,CPL ZERO,FCN ON,HOR MTB,TIM .2E-03[10][GTL] 1.179 DISP Set VERTICAL SHIFT ch.A to vertically center the trace. 1.180 IEEE TIM .5E-03[10] 1.181 PIC 3320A33 (21,27,R/W) "<- Adjust R8139 to vertically " 1.181 PIC (21,57,R/W) "center the trace" 1.181 PIC (22,43,R/W) "on the screen." 1.182 IEEE VER A,CPL DC,ATT .5E+00[10][GTL] 1.183 5500 2Vpp 1kH SI SC S 1.184 DISP Set VERTICAL SHIFT ch.A to center trace on the screen. 1.185 PIC 3320A33 (13,20,R/W) "<- Adjust R8322 for vertical" 1.185 PIC (13,49,R/W) "deflection of 4.00+/-0.05 div." 1.185 PIC (11,22,R/W) "<- Adjust R8319 to keep the trace" 1.185 PIC (11,56,R/W) "vertically centered." 1.186 IEEE HOR MTB,TIM .2E-03[10] 1.187 PIC 3320A33 (15,9,R/W) "<- Measure the voltage at X3386" 1.187 PIC (15,41,R/W) "with the oscilloscope" 1.187 PIC (16,25,R/W) "(external trigger)." 1.187 PIC (13,25,R/W) "<- Note the location of R8342." 1.188 DISP Set the measuring oscilloscope to 1ms/div and 200mV/div. 1.189 PIC 3320FIG5 (10,4,BR/LW) "Adjust R8342 so that the" 1.189 PIC (10,29,BR/LW) "squarewave amplitude" 1.189 PIC (11,4,BR/LW) "in the acquisition stroke is minimal." 1.190 IEEE VER A,CPL ZERO[10][GTL] 1.191 DISP Set VERTICAL SHIFT ch.A to center trace on the screen. 1.192 IEEE HOR MTB,TIM .5E-03[10] 1.193 PIC 3320A33 (21,27,R/W) "<- Adjust R8139 to vertically " 1.193 PIC (21,57,R/W) "center the trace" 1.193 PIC (22,43,R/W) "on the screen." 1.194 PIC 3320A33 (14,8,R/W) "<- Measure the voltage at X3391" 1.194 PIC (14,40,R/W) "with the oscilloscope" 1.194 PIC (15,18,R/W) "(DC-coupled, external trigger)." 1.194 PIC (12,22,R/W) "<- Note the location of R8319" 1.195 DISP Position the intensified "line" on the trace on the 1.195 DISP measuring oscilloscope in the center or the screen. 1.196 IEEE TIM .2E-03,VER A,CPL DC[10] 1.197 PIC 3320FIG6(10,5,BR/LW)"Adjust R8319 to center one of two" 1.197 PIC (11,5,BR/LW) "lines a or b vertically on the screen." 1.198 IEEE CPL ZERO,HOR MTB,TIM .5E-03[10] 1.199 PIC 3320A33 (12,27,R/W) "<- Adjust R8339 to vertically " 1.199 PIC (12,57,R/W) "center the" 1.199 PIC (13,38,R/W) " trace on the screen." 1.200 HEAD 9.3.7 GAIN AND CORRECTION STROKE IN P^2CCD-MODE: ch.B 1.201 DISP Connect the 5500A Scope Output to UUT Channel B. 1.202 IEEE VER B,CPL ZERO,FCN ON,HOR MTB,TSO B,TIM .2E-03[10][GTL] 1.203 DISP Set VERTICAL SHIFT ch.B to vertically center the trace. 1.204 IEEE TIM .5E-03[10] 1.205 PIC 3320A33 (12,12,R/W) "<- Adjust R8359 to vertically " 1.205 PIC (12,42,R/W) "center the" 1.205 PIC (13,22,R/W) " trace on the screen." 1.206 IEEE VER B,CPL DC,ATT .5E+00[10][GTL] 1.207 5500 2Vpp 1kH SI SC S 1.208 DISP Set VERTICAL SHIFT ch.B to center trace on the screen. 1.209 PIC 3320A33 (13,11,R/W) "<- Adjust R8362 for a vertical" 1.209 PIC (13,42,R/W) "deflection of 4.00+/-0.05 div." 1.209 PIC (12,12,R/W) "<- Adjust R8359 to keep trace vertically" 1.209 PIC (12,53,R/W) "centered on the screen." 1.210 IEEE HOR MTB,TIM .2E-03[10] 1.211 PIC 3320A33 (8,12,R/W) "<- Measure the voltage at X3387 " 1.211 PIC (8,44,R/W) "with the oscilloscope." 1.211 PIC (13,15,R/W) "<- Note the location of R8382" 1.212 PIC 3320FIG5 (10,4,BR/LW) "Adjust R8382 so that the" 1.212 PIC (10,29,BR/LW) "squarewave amplitude" 1.212 PIC (11,4,BR/LW) "in the acquisition stroke is minimal." 1.213 IEEE VER B,CPL ZERO[10][GTL] 1.214 DISP Set VERTICAL SHIFT ch.B to center trace on the screen. 1.215 IEEE HOR MTB,TIM .5E-03[10] 1.216 PIC 3320A33 (12,12,R/W) "<- Adjust R8359 to vertically " 1.216 PIC (12,42,R/W) "center the" 1.216 PIC (13,22,R/W) " trace on the screen." 1.217 PIC 3320A33 (14,8,R/W) "<- Measure the voltage at X3391 " 1.217 PIC (14,40,R/W) "with the oscilloscope (DC-coupled)." 1.217 PIC (12,12,R/W) "<- Note the location of R8359." 1.218 DISP Position the intensified "line" on the trace on the 1.218 DISP measuring oscilloscope in the center or the screen. 1.219 IEEE TIM .2E-03,VER B,CPL DC[10] 1.220 PIC 3320FIG6(10,4,BR/LW)"Adjust R8359 to center one of two" 1.220 PIC (11,4,BR/LW) "lines a or b vertically on the screen." 1.221 IEEE CPL ZERO,HOR MTB,TIM .5E-03[10] 1.222 PIC 3320A33 (12,17,R/W) "<- Adjust R8379 to vertically " 1.222 PIC (12,47,R/W) "center the" 1.222 PIC (13,28,R/W) "Trace on the screen." 1.223 5500 * S 1.224 DISP Disconnect the oscilloscope from the UUT and 1.224 DISP reinstall the shielding plate on A33 (P^2CCD unit). 1.225 HEAD 9.3.7 GAIN 5V/div 1.226 DISP Connect the 5500A Scope Output to UUT Channel A and B 1.226 DISP using a BNC tee and equal length BNC cables. 1.227 5500 20Vpp 1kH SI SC S 1.228 IEEE SET AUT[10][D10000]MSC AUX,CHAN_ID ON, 1.228 IEEE VER A,CPL DC,VER B,CPL DC,VER B,FCN OFF[10][GTL] 1.229 PIC 3320A32 (8,45,R/W) "<- Adjust R5046 so that the ch.A" 1.229 PIC (9,51,R/W) "trace is 4.0+/-0.1 div." 1.230 IEEE FCN ON[10][GTL] 1.231 PIC 3320A32 (8,34,R/W) "<- Adjust R5146 so that the ch.B" 1.231 PIC (9,40,R/W) "trace is 4.0+/-0.1 div." 1.232 5500 * S 1.233 DISP Remove all connections. 1.234 HEAD 9.3.7 OFFSET SINGLE/DUAL CHANNEL 1.235 IEEE SET AUT[10][D6000]MSC AUX,CHAN_ID ON[10][GTL] 1.236 DISP Set VERTICAL SHIFT ch.A so trace is in middle of screen. 1.237 IEEE VER B,FCN ON[10][GTL] 1.238 DISP Set VERTICAL SHIFT ch.B so trace is in middle of screen. 1.239 IEEE CHP ON[10] 1.240 PIC 3320A33 (4,32,R/W) "<- Adjust R7515 so that the ch.A" 1.240 PIC (4,65,R/W) "trace is" 1.240 PIC (5,35,R/W) "in the vertical mid of the screen." 1.241 PIC 3320A33 (4,18,R/W) "<- Adjust R7715 so that the ch.B" 1.241 PIC (4,51,R/W) "trace is" 1.241 PIC (5,21,R/W) "in the vertical mid of the screen." 1.242 HEAD 9.3.7 OFFSET DUAL/ADD 1.243 IEEE VER ADD,FCN ON[10] 1.244 PIC 3320A33(4,37,R/W)"<- Adjust R7612 so that the trace is" 1.244 PIC (5,40,R/W) "in the vertical mid of the screen." 1.245 HEAD 9.3.7 OFFSET & GAIN MIN/MAX & P[253]CCD MODE: VERTICAL 2 1.246 IEEE SPL SERVICE,SERVICE 10,SERVICE UP,SERVICE UP[10] 1.247 DISP The instrument now switches between MIN/MAX mode on and 1.247 DISP MIN/MAX mode off. 1.247 DISP 1.247 DISP When MIN/MAX mode is off, two intensified traces are 1.247 DISP visible. The upper is ch.A and the lower is ch.B. 1.247 DISP 1.247 DISP When MIN/MAX mode is on, two low intensity traces are 1.247 DISP displayed for each channel (four total). 1.248 DISP If the adjustment for a channel is correct the two 1.248 DISP low intensity traces will appear superimposed and in the 1.248 DISP same position as the intensified trace for that channel. 1.248 DISP 1.248 DISP If the adjustment for a channel is incorrect, one or 1.248 DISP both of the low intensity traces will not be in the 1.248 DISP position as the intensified trace for that channel. 1.249 PIC 3320A33 (4,27,R/W) "<- Adjust R7583 &" 1.249 PIC (6,34,R/W) "<- R7566 so that the ch.A low intensity" 1.249 PIC (7,36,R/W) " traces are in the same position as the" 1.249 PIC (8,36,R/W) " ch.A intensified trace +/-0.1 div." 1.250 PIC 3320A33 (4,12,R/W) "<- Adjust R7783 &" 1.250 PIC (6,22,R/W) "<- R7766 so that the ch.B low intensity" 1.250 PIC (7,24,R/W) " traces are in the same position as the" 1.250 PIC (8,24,R/W) " ch.B intensified trace +/-0.1 div." 1.251 DISP Connect the 5500A Scope Output to UUT Channel A and B 1.251 DISP using a BNC tee and equal length BNC cables. 1.252 5500 1Vpp 1kH SI SC S 1.253 PIC 3320A33 (1,30,R/W) "<- Adjust R7606 to superimpose the" 1.253 PIC (1,65,R/W) "top levels" 1.253 PIC (2,40,R/W) "of the upper squareware +/-0.1 div." 1.254 PIC 3320A33 (2,36,R/W) "<- Adjust R7592 to superimpose the" 1.254 PIC (2,71,R/W) "bottom" 1.254 PIC (3,35,R/W) "levels of upper squareware +/-0.1 div." 1.255 PIC 3320A33 (1,18,R/W) "<- Adjust R7806 to superimpose the" 1.255 PIC (1,53,R/W) "top levels" 1.255 PIC (2,20,R/W) " of the lower squareware +/-0.1 div." 1.256 PIC 3320A33 (2,16,R/W) "<- Adjust R7792 to superimpose the" 1.256 PIC (2,51,R/W) "bottom" 1.256 PIC (3,18,R/W)" levels of the lower squareware +/-0.1 div." 1.257 5500 * S 1.258 DISP Disconnect the 5500A from the UUT. 1.259 HEAD 9.3.7 OFFSET AND GAIN DIRECT MODE: ch.A, VERTICAL 3 1.260 IEEE SERVICE UP[10] 1.261 PIC 3320A33 (5,27,R/W) "<- Position the traces upon each" 1.261 PIC (5,60,R/W) "other with R7584." 1.262 DISP Connect the 5500A Scope Output to UUT Channel A. 1.263 5500 1Vpp 1kH SI SC S 1.264 PIC 3320A33 (1,36,R/W) "<- Adjust R7603 to equal amplitudes" 1.264 PIC (2,38,R/W) " displayed on the screen." 1.265 HEAD 9.3.7 OFFSET AND GAIN DIRECT MODE: ch.B, VERTICAL 4 1.266 IEEE SERVICE UP[10] 1.267 PIC 3320A33 (5,12,R/W) "<- Position the traces upon each" 1.267 PIC (5,45,R/W) "other with R7784." 1.268 5500 * S 1.269 DISP Connect the 5500A Scope Output to UUT Channel B. 1.270 5500 1Vpp 1kH SI SC S 1.271 PIC 3320A33 (1,12,R/W) "<- Adjust R7803 to equal amplitudes" 1.271 PIC (2,14,R/W) " displayed on the screen." 1.272 5500 * S 1.273 DISP Disconnect the 5500A from the UUT. 1.274 HEAD 9.3.7 OFFSET VERTICAL AMPLIFIERS: VERTICAL 6 1.275 IEEE SERVICE UP,SERVICE UP[10] 1.276 PIC 3320A32 (17,51,R/W) "<- Adjust R5021 for minimal" 1.276 PIC (18,54,R/W) "jump on the upper trace." 1.277 PIC 3320A32 (17,40,R/W) "<- Adjust R5121 for minimal" 1.277 PIC (18,42,R/W) " jump on the lower trace." 1.278 HEAD 9.3.7 OFFSET VERTICAL AMPLIFIERS: VERTICAL 7 1.279 IEEE SERVICE UP[10] 1.280 PIC 3320A32 (16,51,R/W) "<- Adjust R5022 for minimal" 1.280 PIC (17,54,R/W) "jump on the upper trace." 1.281 PIC 3320A32 (16,40,R/W) "<- Adjust R5122 for minimal" 1.281 PIC (17,42,R/W) " jump on the lower trace." 1.282 HEAD 9.3.7 OFFSET VERTICAL AMPLIFIERS: VERTICAL 8 1.283 IEEE SERVICE UP[10] 1.284 PIC 3320A32 (15,51,R/W) "<- Adjust R5023 for minimal" 1.284 PIC (16,54,R/W) "jump on the upper trace." 1.285 PIC 3320A32 (15,40,R/W) "<- Adjust R5123 for minimal" 1.285 PIC (16,42,R/W) " jump on the lower trace." 1.286 HEAD 9.3.7 OFFSET VERTICAL AMPLIFIERS: VERTICAL 9 1.287 IEEE SERVICE UP[10] 1.288 PIC 3320A32 (14,51,R/W) "<- Adjust R5024 for minimal" 1.288 PIC (15,54,R/W) "jump on the upper trace." 1.289 PIC 3320A32 (14,40,R/W) "<- Adjust R5124 for minimal" 1.289 PIC (15,42,R/W) " jump on the lower trace." 1.290 IEEE SET AUT[10] 1.291 HEAD 9.3.8 LF SQUARE-WAVE RESPONSE ATTENUATOR UNIT: ch.A 1.292 DISP Connect the 5500A Scope Output to UUT Channel A using 1.292 DISP the 1000:1 AC Divider, Fluke Part #7405A-4207. 1.293 5500 30Vpp 200H SQ SC S 1.294 IEEE SET AUT[10][D7000] 1.294 IEEE HOR MTB,TIM .5E-03,VER A,CPL DC,ATT 5E-03[10][GTL] 1.295 PIC 3320A35 (12,20,R/W) "<- Adjust R6850 on A27 for a" 1.295 PIC (12,49,R/W) "straight pulse" 1.295 PIC (13,23,R/W) "top with a deviation <=0.1 div." 1.296 5500 * S 1.297 DISP Connect the 5500A Scope Output to UUT Channel A. 1.298 IEEE ATT 50E-03[10][GTL] 1.299 5500 300mVpp 200H SQ SC S 1.300 PIC 3320A35 (13,22,R/W) "<- Adjust R6817 on A27 for a" 1.300 PIC (13,51,R/W) "straight pulse" 1.300 PIC (14,25,R/W) "top with a deviation <=0.1 div." 1.301 IEEE ATT .5E+00[10][GTL] 1.302 5500 3Vpp 200H SQ SC S 1.303 PIC 3320A35 (12,23,R/W) "_ Adjust R6802 on A27 for a" 1.303 PIC (12,51,R/W) "straight pulse" 1.303 PIC (13,24,R/W) " top with a deviation <=0.1 div." 1.304 5500 * S 1.305 DISP Remove all connections. 1.306 HEAD 9.3.7 LF SQUARE-WAVE RESPONSE ATTENUATOR UNIT: ch.B 1.307 DISP Connect the 5500A Scope Output to UUT Channel B using 1.307 DISP the 1000:1 AC Divider, Fluke Part #7405A-4207. 1.308 5500 30Vpp 200H SQ SC S 1.309 IEEE SET AUT[10][D9000] 1.309 IEEE HOR MTB,TIM .5E-03,VER B,CPL DC,ATT 5E-03[10][GTL] 1.310 PIC 3320A35 (12,12,R/W) "<- Adjust R6850 on A29 for a" 1.310 PIC (12,41,R/W) "straight pulse" 1.310 PIC (13,15,R/W) "top with a deviation <=0.1 div." 1.311 5500 * S 1.312 DISP Connect the 5500A Scope Output to UUT Channel B. 1.313 IEEE ATT 50E-03[10][GTL] 1.314 5500 300mVpp 200H SQ SC S 1.315 PIC 3320A35 (13,14,R/W) "<- Adjust R6817 on A29 for a" 1.315 PIC (13,43,R/W) "straight pulse" 1.315 PIC (14,16,R/W) " top with a deviation <=0.1 div." 1.316 IEEE ATT .5E+00[10][GTL] 1.317 5500 3Vpp 200H SQ SC S 1.318 PIC 3320A35 (12,14,R/W) "_ Adjust R6802 on A29 for a" 1.318 PIC (12,42,R/W) "straight pulse" 1.318 PIC (13,15,R/W) " top with a deviation <=0.1 div." 1.319 5500 * S 1.320 DISP Disconnect the 5500A from the UUT. 1.321 HEAD 9.3.8 HF SQUARE-WAVE RESPONSE: ch.A 1.322 DISP Connect the 5500A Scope Output to UUT Channel A. 1.323 5500 100mVpp 1MH ED SC S L 1.324 IEEE SET AUT[10][D8000]HOR MTB,TIM 10E-09,TRD -2, 1.324 IEEE VER A,CPL DC,IMP LOW,ATT 20E-03[10][GTL] 1.325 PIC 3320A33 (4,30,R/W) "<- Note the locations of R7512 &" 1.325 PIC (5,33,R/W) "<- R7513 " 1.326 PIC 3320FIG7 (2,37,BR/LC) "Adjust R7512 & R7513 so that" 1.326 PIC (2,66,BR/LC) "overshoot +" 1.326 PIC (3,37,BR/LC) "ringing does not exceed +/-6% during the" 1.326 PIC (4,37,BR/LC) "first 10ns of the pulse." 1.327 5500 * S 1.328 HEAD 9.3.7 HF SQUARE-WAVE RESPONSE: ch.B 1.329 DISP Connect the 5500A Scope Output to UUT Channel B. 1.330 5500 100mVpp 1MH ED SC S L 1.331 IEEE SET AUT[10][D9000] 1.331 IEEE VER B,CPL DC,IMP LOW,ATT 20E-03,HOR MTB,TIM 10E-09[10] 1.331 IEEE [GTL] 1.332 PIC 3320A33 (4,14,R/W) "<- Note the locations of R7712 & " 1.332 PIC (5,18,R/W) "<- R7713 " 1.333 PIC 3320FIG7 (2,37,BR/LC) "Adjust R7712 & R7713 so that" 1.333 PIC (2,66,BR/LC) "overshoot +" 1.333 PIC (3,37,BR/LC) "ringing does not exceed +/-6% during the" 1.333 PIC (4,37,BR/LC) "first 10ns of the pulse." 1.334 IEEE HOR MTB,TRD +0[10] 1.335 5500 * S 1.336 DISP Disconnect the 5500A from the UUT. 1.337 HEAD 9.3.9 DELTA-T 1.338 DISP Connect the 5500A Scope Output to UUT Channel A. 1.339 5500 600mVpp 50MH LS SC S L 1.340 IEEE SET AUT[10][D13000] 1.340 IEEE VER A,ATT .1E+00,HOR MTB,TIM 5E-09,MSC AUX,DOT ON[10] 1.341 PIC 3320A34(16,27,R/W)"<- Adjust 8607 so that a continuous" 1.341 PIC (17,29,R/W) " smooth sine-wave signal is displayed." 1.342 IEEE MSC AUX,WRT ON[10] 1.343 DISP Verify that the displayed sine-wave stayed without 1.343 DISP discontinuities. 1.344 5500 * S 1.345 DISP Disconnect the 5500A from the UUT. 1.346 IEEE VER A,IMP HIGH,VER B,IMP HIGH[10][GTL] 1.347 HEAD 9.3.10 AC/DC BALANCE EXT TRIG INPUT: TRIGGER 0 1.348 DISP Connect the 5500A Scope Output to UUT Channel A 1.348 DISP and EXT TRIG using a BNC tee. 1.349 5500 600mVpp 100H SI SC S 1.350 IEEE SPL SERVICE,SERVICE 11[10] 1.351 PIC 3320A32 (20,34,R/W) "Adjust R7022 so that the trigger" 1.351 PIC (21,42,R/W) "point shift is <=0.1 div." 1.352 5500 * S 1.353 HEAD 9.3.10 AC/DC BAL INT TRIGGERING VIA A & B: TRIGGER 1 1.354 IEEE SERVICE UP[10] 1.355 DISP Connect the 5500A Scope Output to UUT Channel A and B 1.355 DISP using a BNC tee and equal length BNC cables. 1.356 5500 600mVpp 100H SI SC S 1.357 PIC 3320A32 (18,46,R/W) " Adjust R5030 so that the trigger" 1.357 PIC (19,46,R/W) " point shift is <=0.1 div." 1.358 HEAD 9.3.10 AC/DC BAL INT TRIGGERING VIA A & B: TRIGGER 2 1.359 IEEE SERVICE UP[10] 1.360 PIC 3320A32 (18,35,R/W) " Adjust R5130 so that the trigger" 1.360 PIC (19,35,R/W) " point shift is <=0.1 div." 1.361 HEAD 9.3.10 HF REJ BALANCE: TRIGGER 3 1.362 IEEE SERVICE UP[10] 1.363 PIC 3320A32(20,21,R/W)"<- Adjust R7019 so that the trigger" 1.363 PIC (21,23,R/W) " point shift is <=0.1 div." 1.364 5500 * S 1.365 HEAD 9.3.10 AUTO TRIGGERING: TRIGGER 4 1.366 IEEE SERVICE UP[10] 1.367 DISP Connect the 5500A Scope Output to UUT Channel A. 1.368 5500 120mVpp 100H SI SC S 1.369 PIC 3320A1 (15,15,R/W) "Adjust R2533 so that the vertical " 1.369 PIC (16,15,R/W) "deviation of the dot from the " 1.369 PIC (17,15,R/W) "center of the screen is <=0.1 div. " 1.370 PIC 3320A32 (20,16,R/W) "_ Set R7046 fully CCW" 1.371 PIC 3320A32(15,21,R/W)"<- Adjust R7084 so that the trigger" 1.371 PIC (15,57,R/W) "gap lies exactly in" 1.371 PIC (16,23,R/W) " the mid between the top and bottom level" 1.371 PIC (16,65,R/W) "of the signal." 1.372 5500 5mVpp 100H SI SC S 1.373 PIC 3320A32 (13,20,R/W) "<- Adjust R7156 for a correctly" 1.373 PIC (13,52,R/W) "triggered display." 1.374 HEAD 9.3.10 LEVEL SENSITIVITY: TRIGGER 4 1.375 5500 5mVpp 100H SI SC S 1.376 PIC 3320A32 (20,16,R/W) "_ Adjust R7046 so that the signal" 1.376 PIC (20,50,R/W) "is just triggered." 1.377 HEAD 9.3.10 AUTO/DC BALANCE: TRIGGER 5 1.378 IEEE SERVICE UP[10] 1.379 5500 600mVpp 100H SI SC S 1.380 PIC 3320A32 (20,24,R/W) "_ Adjust R7036 so that the trigger" 1.380 PIC (20,59,R/W) "point" 1.380 PIC (21,46,R/W) "shift is <=0.1 div." 1.381 HEAD 9.3.10 DUAL TRIGGERING: TRIGGER 6 1.382 IEEE SERVICE UP[10] 1.383 PIC 3320A1 (15,15,R/W) " Adjust R2533 to vertically center " 1.383 PIC (16,15,R/W) " the trace on the screen " 1.384 MESS Adjust the frequency so that the trigger slope flashes 1.384 MESS between positive and negative triggering. 1.385 5500 100H 600mVpp SI SC N 1.386 MESS 1.387 PIC 3320A32 (15,13,R/W) "<- Adjust R7116 so that the gap" 1.387 PIC (15,44,R/W) " between" 1.387 PIC (16,15,R/W) " pos and neg slope is minimal." 1.388 PIC 3320A32 (15,15,R/W) "<- Adjust R7129 so the vertical" 1.388 PIC (15,46,R/W) " symmetry between positive and" 1.388 PIC (16,17,R/W) " negative slope in vertical mid of the" 1.388 PIC (16,56,R/W) "screen is +/-0.1 div." 1.389 5500 * S 1.390 HEAD 9.3.10 EVENTS/CLOCK +/- SLOPE BALANCE 1.391 DISP Connect the 5500A Scope Output to UUT Channel A and 1.391 DISP EVENTS using a BNC tee and equal length BNC cables. 1.392 5500 50mVpp 100H SI SC S 1.393 IEEE SET AUT[10][D10000]VER A,ATT 20E-03,HOR MTB,TIM 1E-03, 1.393 IEEE CPL DC,LEV 0[10][GTL] 1.394 DISP Set TRIGGER DELAY to EVNT+DELAY. 1.395 PIC 3320A32 (3,22,R/W) " Toggle TRIGGER SLOPE between" 1.395 PIC (3,51,R/W) " POSITIVE and NEGATIVE while" 1.395 PIC (4,20,R/W) "<- adjusting R7159 for minimal trigger gap" 1.395 PIC (4,63,R/W) "and R7158 for" 1.395 PIC (5,22,R/W) " maximal trigger symmetry (around" 1.395 PIC (5,56,R/W) "vertical mid of screen)." 1.396 5500 * S 1.397 DISP Disconnect the 5500A from the UUT. 1.398 HEAD 9.3.4 COMPENSATION OF CRT TOLERANCES: DISPLAY 3 1.399 IEEE SPL SERVICE,SERVICE 12,SERVICE UP,SERVICE UP, 1.399 IEEE SERVICE UP[10] 1.400 PIC 3320A1 (15,15,R/W) " Adjust R2533 so the trace is" 1.400 PIC (15,44,R/W) " centered " 1.400 PIC (16,15,R/W) " vertically on the screen +/-0.1 div. " 1.401 IEEE SET AUT[10] 1.402 HEAD 9.3.10 LF SQUARE-WAVE RESPONSE EXT AND EVENTS 1.403 DISP Connect the 5500A Scope Output to UUT EXT TRIG. 1.404 PIC 3320A32 (22,43,R/W) "Connect the probe of the measuring" 1.404 PIC (23,43,R/W) "oscilloscope to pin 1 of A40." 1.405 DISP Set the measuring scope to 100mV/div and 10us/div. 1.406 5500 3Vpp 10kH SI SC S 1.407 IEEE HOR MTB,TSO EXT[10] 1.408 PIC 3320A31(13,17,R/W)"<- Adjust R4751 for a straight pulse" 1.408 PIC (14,19,R/W) " top on the measuring oscilloscope." 1.409 5500 30Vpp 10kH SI SC S 1.410 IEEE TSO EXD[10] 1.411 PIC 3320A31(13,19,R/W)"<- Adjust R4753 for a straight pulse" 1.411 PIC (14,21,R/W) " top on the measuring oscilloscope." 1.412 5500 * S 1.413 DISP Connect the 5500A Scope Output to UUT EVENTS/EXT CLOCK. 1.414 PIC 3320A32 (7,21,R/W) " Connect the probe of the measuring" 1.414 PIC (8,21,R/W) " oscilloscope to pin 1 of A43." 1.415 5500 3Vpp 10kH SI SC S 1.416 PIC 3320A31(13,31,R/W)"<- Adjust R4851 for a straight pulse" 1.416 PIC (14,33,R/W) " top on the measuring oscilloscope." 1.417 5500 * S 1.418 DISP Remove all connections. 1.419 HEAD 9.3.5 P^2CCD PRE-ADJUSTMENT 1.420 DISP Remove the shielding plate from A33 (P^2CCD unit). 1.421 DISP Connect the 5500A Scope Output to UUT Channel A and B 1.421 DISP using a BNC tee and equal length BNC cables. 1.422 5500 600mVpp 1kH TI SC S 1.423 IEEE SET AUT[10][D9000]VER A,ATT .1E+00,VER B,ATT .1E+00[10] 1.424 HEAD 9.3.5 LEVEL OF THRESHOLD GATE: ch.A 1.425 PIC 3320A33(16,40,R/W)"Connect the 8842A INPUT HI to pin 10" 1.425 PIC (17,40,R/W) "on A46 and INPUT LO to chassis ground." 1.425 PIC (22,35,R/W) "<- Note the location of R7953" 1.426 MESS Adjust R7953 for an 8842A 1.426 MESS reading of 6.0+/-0.1V. 1.427 8842 6V S 2W 1.428 MATH MEM1 = MEM1 - 6 1.429 JMPZ 1.431 0.1U 1.430 JMP 1.425 1.431 HEAD 9.3.5 LEVEL OF TRESHOLD GATE: ch.B 1.432 PIC 3320A33(16,40,R/W)"Connect the 8842A INPUT HI to pin 10" 1.432 PIC (17,40,R/W) "on A47 and INPUT LO to chassis ground." 1.432 PIC (22,17,R/W) "<- Note the location of R8153" 1.433 MESS Adjust R8153 for an 8842A 1.433 MESS reading of 6.0+/-0.1V. 1.434 8842 6V S 2W 1.435 MATH MEM1 = MEM1 - 6 1.436 JMPZ 1.438 0.1U 1.437 JMP 1.432 1.438 HEAD 9.3.5 DC LEVEL OF SIGNAL GATE: ch.A 1.439 PIC 3320A33(16,40,R/W)"Connect the 8842A INPUT HI to pin 6" 1.439 PIC (17,40,R/W) "on A46 and INPUT LO to chassis ground." 1.439 PIC (22,29,R/W) "<- Note the location of R7959" 1.440 MESS Adjust R7959 for an 8842A 1.440 MESS reading of 5.5+/-0.1V. 1.441 8842 5.5V S 2W 1.442 MATH MEM1 = MEM1 - 5.5 1.443 JMPZ 1.445 0.1U 1.444 JMP 1.439 1.445 HEAD 9.3.5 DC LEVEL OF SIGNAL GATE: ch.B 1.446 PIC 3320A33(16,40,R/W)"Connect the 8842A INPUT HI to pin 6" 1.446 PIC (17,40,R/W) "on A47 and INPUT LO to chassis ground." 1.446 PIC (22,11,R/W) "<- Note the location of R8159" 1.447 MESS Adjust R8159 for an 8842A 1.447 MESS reading of 5.5V +/-0.1V. 1.448 8842 5.5V S 2W 1.449 MATH MEM1 = MEM1 - 5.5 1.450 JMPZ 1.452 0.1U 1.451 JMP 1.446 1.452 MESS 1.453 8842 * S 1.454 DISP Disconnect the 8842A from the UUT. 1.455 HEAD 9.3.5 BIAS CHARGE: ch.A 1.456 PIC 3320A26 (8,49,R/W) "Connect the external trigger" 1.456 PIC (9,49,R/W) "input of the measuring" 1.456 PIC (10,49,R/W) "oscilloscope to X2631." 1.457 PIC 3320A33 (14,23,R/W) "<- Measure the voltage at X3382" 1.457 PIC (14,55,R/W) "with the oscilloscope" 1.457 PIC (15,34,R/W) "(AC-coupled, external trigger)." 1.457 PIC (21,38,R/W) "<- Note the location of R7939" 1.458 PIC 3320FIG4(10,5,BR/LW)"Adjust R7939 to that the distance" 1.458 PIC (10,39,BR/LW) "between level a and b" 1.458 PIC (11,5,BR/LW) "during the correction stroke shown above" 1.458 PIC (11,46,BR/LW) "is 400+/-20mV." 1.459 HEAD 9.3.5 BIAS CHARGE: ch.B 1.460 PIC 3320A33 (14,14,R/W) "<- Measure the voltage at X3384" 1.460 PIC (14,46,R/W) "with the oscilloscope" 1.460 PIC (15,26,R/W) "(AC-coupled, external trigger)." 1.460 PIC (21,27,R/W) "<- Note the location of R8139" 1.461 PIC 3320FIG4(10,5,BR/LW)"Adjust R8139 to that the distance" 1.461 PIC (10,39,BR/LW) "between level a and b" 1.461 PIC (11,5,BR/LW) "during the correction stroke shown above" 1.461 PIC (11,46,BR/LW) "is 400+/-20mV." 1.462 HEAD 9.3.5 P^2CCD OUTPUT CIRCUITS 1.463 PIC 3320A33 (14,40,R/W) "Set R8362, R8382, R8322, & R8342" 1.463 PIC (15,40,R/W) "in their mid position." 1.464 PIC 3320A33 (14,8,R/W) "<- Measure the voltage at X3391" 1.464 PIC (14,40,R/W) "with the oscilloscope" 1.464 PIC (15,20,R/W) "(DC-coupled, external trigger)." 1.464 PIC (10,2,R/W) "Note the locations of " 1.464 PIC (10,24,R/W) "R8359, R8379, R8319, & R8339" 1.465 PIC 3320FIG4 (10,5,BR/LW) "Adjusting R8359, R8379, R8319," 1.465 PIC (10,36,BR/LW) "& R8339 each influences" 1.465 PIC (11,5,BR/LW) "a level during the correction stroke." 1.465 PIC (11,43,BR/LW) "Adjust these four" 1.465 PIC (12,5,BR/LW) "levels to 0V with these potentiometers." 1.466 5500 * S 1.467 IEEE [GTL] 1.468 HEAD CONCLUSION OF THE PROCEDURE. 1.469 DISP Disconnect all leads from the calibration system first 1.469 DISP and then from the UUT. 1.469 DISP Switch off the UUT and disconnect it from line power. 1.469 DISP NOTE: When reinstalling the top and bottom covers, take 1.469 DISP care that the wiring (coaxial cables and flat cables) is 1.469 DISP not damaged. 1.470 END