175A - HP Archive

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Section V Paragraphs 5-40 to 5-42 c. Set Time-Mark Generator output to 5 mc and adjust vertical SENSITIVITY and VERTICAL POSI- TION for a 6-cm display coinciding with top and bottom lines of graticule. d. Set HORIZONTAL POSITION to align left side of display with left graticule edge. e. Adjust Pattern Adj R345 for minimum barreling or pin-cushioning around top, bottom, and left sides of display (see figure 5-4). f. Adjust HORIZONTAL POSITION to align right side of display with right graticule edge. g. Trim Pattern Adj R345, if necessary, for minimum barreling or pin-cushioning. Repeat steps d and e for squarest overall pattern. h. Disconnect Time-Mark Generator. 5-40. HORIZONTAL AMPLIFIER. 5-41. Refer to figure 5-3 for location of adjustments. 5-8 BARRELING 5-42. SWEEP GAIN. Model 175A a. Locate foam-covered wire which connects sweep generator output to horizontal amplifier input (see figure 5-3). b. Disconnect wire from sweep generator printed circuit board. c. Set: HORIZONTAL DISPLAY . . . . . . . . X1 d. Connect the Calibration Generator to the foam- covered wire and set output to 50 volts peak-to-peak. e. Center display and adjust X1 Gain Adj R225 for 5.5 cm of horizontal deflection. f. Set: Figure 5-4. Pattern Adjustment HORIZONTAL DISPLAY . . . . . . . . XI0 g. Set Calibration Generator output to 5 volts peak- to-peak. I I PI N-CUSHION ING I I 175A-A-8 i 01526-2
Model 175A h. Center display and adjust X10 GainAdj R227 for 5.5 cm of horizontal deflection. i. Disconnect Calibration Generator from foam- covered wire. 5-43. INTERNAL BALANCE. a. Set: HORIZONTAL DISPLAY ......... X10 SWEEP MODE .... just out of PRESET b. Center the spot on crt with HORIZONTAL PO- SITION control. c. Set: HORIZONTAL DISPLAY ......... X1 d. Adjust Magnifier Centering R230 to center spot. e. Repeat steps a through d until spot does not move when switching HORIZONTAL DISPLAY from x1 to x10. 5-44. EXTERNAL BALANCE. a. Set: HORIZONTAL DISPLAY 0.1 VOLT/CM DC EXTERNAL VERNIER fully counterclockwise b. Center the spot on crt with HORIZONTAL PO- SITION control. c. Set: EXTERNAL VERNIER .......... CAL d. Adjust External Balance R212 to center spot. e. Repeat steps a through d until spot does not move when EXTERNAL VERNIER is rotated. 5-45. EXTERNAL GAIN. a. Connect Calibration Generator to HORIZ INPUT. b. Set: HORIZONTAL DISPLAY . 0.1 VOLT/CM DC c. Set Calibration Generator output to 1 voltpeakto-peak. d. Adjust Gain Adj R213 for 10 cm of horizontal deflection. e. Disconnect Calibration Generator. 5-46. FREQUENCY COMPENSATION. a. Connect Square Wave Generator 600-ohm output to foam-covered wire disconnected in paragraph 5-42. b. Connect 75-ohm output to TRIG INPUT. c. Connect, with a jumper, the vertical INPUT to the point (sweep output) on sweep-generator printed- circuit board from which the foam-covered wire was disconnected. Section V Paragraphs 5-43 to 5-46 d. Set: Vertical SENSITIVITY .... lOVOLTS/CM Vertical Sensitivity VERNIER ..... CAL Vertical AC-DC. ............. AC HORIZONTAL DISPLAY ......... X1 TRIGGER SOURCE ......... EXTAC SWEEP MODE. ........... PRESET SWEEP TIME . ....... 0.1 MSEC/CM e. Set 600-ohm and 75-ohm Square-Wave Gener- ator outputs to maximum and frequency to 4 kc. f. Center display and adjust TRIGGER LEVEL, if necessary, for a stable display (see figure 5-5). Figure 5-5. Frequency Compensation g. Set X1 Gain Compensation C213 between mid- range and lowest capacitance and then adjust Input Attenuator Compensation C211 for best square wave. h. Set: HORIZONTAL DISPLAY ............ XI0 i. Adjust 600-ohm Square Wave Generator output for 8 cm of deflection. Trim C211, if necessary, for best square wave with HORIZONTAL DISPLAY in X1 and X10 positions. j. Set: HORIZONTAL DISPLAY. ......... X1 SWEEP TIME ......... 10 pSEC/CM k. Set 600-ohm Square Wave Generator output to maximum and frequency to 40 kc. m. Adjust X1 Gain Compensation C213 for best square wave. n. Set: HORIZONTAL DISPLAY ......... X10 p. Set 600-ohm Square Wave Generator output for 8 cm of deflection. q. Adjust X10 Gain Compensation C212 for best square wave. r. Set: HORIZONTAL DISPLAY. .. 1 VOLT/CM DC 01 526- 2 5-9
Page 1: HP Archive This vintage Hewlett Pac
Page 4 and 5: Table of Contents Model 175A Sectio
Page 6 and 7: Section I Figure 1-1 1-0 Figure 1-1
Page 8 and 9: Section I Table 1-1 and Figure 1-2
Page 10 and 11: 1 . Section I Paragraphs 1-9 to 1-1
Page 12 and 13: Section III Model 175A Figure 3-1 p
Page 14 and 15: Section 111 Figure 3-2 1. Set INTEN
Page 16 and 17: Section 111 Model 175A Figure 3-4 @
Page 18 and 19: Section Iv Figure 4-1 Q\ j j iqpm-1
Page 20 and 21: Section IV Paragraphs 4-11 to 4-29
Page 22 and 23: Section IV Paragraphs 4-34 to 4-41
Page 24 and 25: Section IV Paragraphs 4-47to 4-56 V
Page 26 and 27: ! I 5 Section V Table 5-1 - Item -
Page 28 and 29: Section V Paragraphs 5-13 to 5-17 i
Page 30 and 31: Section V Paragraphs 5-21 to 5-32 5
Page 32 and 33: Section V Figure 5-2 5- 6 -R45 GAIN
Page 36 and 37: Section V Paragraphs 5-47 to 5-50 F
Page 38 and 39: Section V Paragraphs 5-57 to 5-60 m
Page 40 and 41: Section V Paragraphs 5-74 to 5-76 5
Page 42 and 43: Section V Paragraphs 5-77 to 5-85 S
Page 44 and 45: Section V Paragraphs 5-93 to 5-100
Page 46 and 47: Section V Table 5-9 (Cont'd) 15. Tr
Page 48 and 49: Section V Model 175A Figure 5-13 3E
Page 50 and 51: Model 175A 01526-2 (u a - R88 In I
Page 52 and 53: I R34 :i554 R36 7 c21 0 c23 C16 C25
Page 54: 2.: h(YN e a E -4 a e f
Page 58 and 59: - 2- a s; - a L C125 R143 R138 t 0
Page 60 and 61: Model 175A , 01526-2 SCHEMATIC DIAG
Page 63 and 64: RlOlO 0 d ncu 0 0 0 0 0 0 0 0 a a a
Page 66 and 67: c22 I " R234 R236 R2d R245 :215 R24
Page 68 and 69: I I? .A N d N v1 .A 0
Page 70 and 71: Section V Figures 5-29 and 5-30 SCH
Page 72 and 73: I I CR483 c482 Ck463 I CR443 1" a46
Page 74 and 75: i C a I -- n I n > N t ij I- A Y D
Page 76 and 77: Section V Figures 5-34 to 5-36 5-38
Page 78 and 79: Model 175A Section VI Paragraphs 6-
Page 80 and 81: Model 175A Section VI Table 6-1 Ref
Page 82 and 83: Model 175A Reference Designation C3
Page 84 and 85:
Model 175A CR304 Ck420 CR421 Cli422
Page 86 and 87:
Model 175A L105 L106 LZOO L20 1 L20
Page 88 and 89:
Model 175A R6O R61 R62 R63 R6Y I365
Page 90 and 91:
Model 175A n177 R178 R179 Rl8O Rl8l
Page 92 and 93:
Model 175A Reference De sienation t
Page 94 and 95:
Model 175A Section VI Table 6-1 Ref
Page 96 and 97:
Model 175A Reference Designation v2
Page 98 and 99:
Model 175A Section VI Table 6-1 Ref
Page 100 and 101:
Model 175A @ Stock No. 0140-0034 01
Page 102 and 103:
I Model175A Section VI Table 6-2 @
Page 104 and 105:
Model 175A @I Stock No. -~ 0773-000
Page 106 and 107:
Model 175A - @ Stock No. 5060-0765
Page 108 and 109:
Model 175A Cod. No. 01216 01413 816
Page 110 and 111:
CRT WARRANTY CLAIM FROM: DATE: NAME
Page 112 and 113:
@ AUTHORIZED SALES AND SERVICE OFFI
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175A - HP Archive

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