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Maintenance — Type 130 

4-2 

AA

 

Total  dc  current  from  the  rectifier  should  be  about  40 

ma,  of  which  21  ma  goes  to  the  circuits  connected  to  the 
150-volt  bus  and  the  remainder,  about  20  ma,  goes  through 
the regulator tube, when the ac supply is at 115 volts.  Cur -
rent  to  other  circuits  connected  to  the  270-volt  bus  is  but 
fraction of a milliampere.   

You can check the indicating meter by connecting another 

milliameter across it.  The meter is connected to the +150-
volt bus, so be careful not to get a terminal grounded.   

The  variable  oscillator  may  be checked for  operation  by 

connecting  an  oscilloscope  to  the  GUARD  VOLTAGE 
terminal.    The  guard  voltage  will  be  about  one  volt  peak- 
to-peak at 124 to 140 kc.  The fixed oscillator can be check-
ed at point 6 of V45.  These points can also be checked with 
an  ac  voltmeter  capable  of  reading  a  fraction  of  a  volt  at  
140 kc.   

This is a fairly complex electronic device and there is no 

simple  way to find  troubles.  With  a  good  understanding  of 
the  circuits  you  will  be  able  to  make  a  good  guess  at  the 
source of the trouble from the symptoms.  Be sure that any 
difficulty  you  are  having  does  not  come  from  the  settings  
of the front panel controls.   

Soldering and Ceramic Strips 

Many  of  the  components  in  your  Tektronix  instrument  are 

mounted  on  ceramic  terminal strips.   The  notches  in these 
strips  are  lined  with  silver  alloy.    Repeated  use  of  exces-
sive heat, or use of ordinary tin-lead solder will break down 
the silver-to-ceramic bond.   Occasional use  of tin-lead solder  
will not break the bond if excessive heat is not applied.    

If  you  are  responsible  for  the  maintenance  of  a  large 

number  of  Tektronix  instruments,  or  if  you  contemplate 
frequent  parts  changes,  we  recommend  that  you  keep  on 
hand  a  stock  of  solder  containing  about  3%  silver.    This 
type  of  solder  is  used  frequently  in  printed  circuitry  and 
should  be  readily  available  from  radio-supply  houses.    If  you 
prefer,  you  can  order  the  solder  directly  from  Tektronix  in 
one-pound rolls.   Order by Tektronix part number 251-514. 

 

Fig.  4-1.  Soldering tip preparation. 

Because  of  the  shape  of  the  terminals  on  the  ceramic 

strips  it  is  advisable  to  use  a  wedge-shaped  tip  on  your 
soldering  iron  when  you  are  installing  or  removing  parts 
from the strips.  Fig. 4-1 will show you the correct shape for 
the  tip  of  the  soldering  iron.    Be  sure  and  file  smooth  all 
surfaces  of  the  iron  which  will  be  tinned.    This  prevents 
solder from building up on rough spots where it will quickly 
oxidize. 

When removing or replacing components mounted on the 

ceramic strips  you  will  find  that satisfactory results  are  ob-
tained if you proceed in the manner outlines below.   

1.  Use a soldering iron of about 75-watt rating.   

2.  Prepare the tip of the iron as shown in Fig. 4-1.   

3.  Tin  only  the  first  1/16  or  1/8  inch  of  the  tip.    For 

soldering  to  ceramic  terminal  strips  tin  the  iron  with 
solder containing about 3% silver.   

4.  Apply  one  corner  of  the  tip  to  the  notch  where  you 

wish to solder (see Fig. 4-2).   

5.  Apply only enough heat to make the solder flow freely.   

6.  Do not  attempt to fill the notch  on the strip with solder; 

instead,  apply  only  enough  solder  to  cover  the  wires 
adequately,  and  to  form  a  slight  fillet  on  the  wire  as 
shown in Fig. 4-3.   

 

Fig.  4-2.  Applying iron tip to strip.   

 

Fig.  4-3.  Fillet on wire.   

Summary of Contents for Type 130

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Page 7: ...requency determining part of the oscillator The guard voltage circuit can keep stray capacitance from drawing oscillator current by driving the strays at exactly the same instantaneous voltage as the...

Page 8: ...le capacitor sets the variable oscillator to the fixed oscillator frequency to accommodate inclusion of the probe capacitance or other incidental capaci tance FINE ZERO Adjustable capacitor with one t...

Page 9: ...m up for a minute or two so that it can become stabilized Fig 2 1 Capacitancemeasurement using Production Test Fixture Capacitance Measurement First set the meter accurately on zero with the capa cita...

Page 10: ...Operating Instructions Type 130 2 2 AA...

Page 11: ...n parallel with the unknown Use Fig 2 3 to obtain the value of the unknown An accurate 300 f capacitor can be obtained by setting the Type 130 RANGE SELECTOR to 300 f connect a 270 f fixed and a 5 to...

Page 12: ...can be sure of this if turning ZERO control clockwise sends the needle toward zero and the white index on the knob is up Capacitance with Parallel Resistance Correction f Shunt Resistance At 0 f At 1...

Page 13: ...uned circuit so that the UNKNOWN terminal either shunts the tuned circuit for capacitance measurements or is in series with the tuned circuit inductance for inductance measurements Guard Voltage Circu...

Page 14: ...V70A are applied to the left hand end of one of the capacitors C90 C91 C92 C93 or C94 for example C90 Charge diode V15B holds the right hand end of C90 at about 150 volts during the negative excursion...

Page 15: ...rument fails to operate and the pilot light does not light check the source of ac power and see whether the connecting cord is firmly seated Then check the 8 amp line fuse at the back of the instrumen...

Page 16: ...nd if excessive heat is not applied If you are responsible for the maintenance of a large number of Tektronix instruments or if you contemplate frequent parts changes we recommend that you keep on han...

Page 17: ...e as it is being soldered A handy device for this purpose is a short length of wooden dowel with one end shaped as shown in Fig 4 5 In soldering to terminal pins mounted in plastic rods it is necessar...

Page 18: ...on and other containing halogens should not be used They can damage aluminium electrolytic capacitors and some other materials Lubrication Anytime the instrument is cleaned the components should be co...

Page 19: ...ated mechanism The Type F switch uses a 5 32 inch ball Missing detent balls should be replaced by removing the C ring at the front of the bushing This relieves the tension on the spring allowing the b...

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Page 21: ...own in Fig 5 3 Frequency adjustment is made with the slug in the top of the inductor T30 see Figure 5 4 Fig 5 2 Equipment needed for calibration ofType 130 L C Meter b An accurate source of 140 kc sig...

Page 22: ...slug in T1 to increase the amount of error by a factor of three Repeat steps 4 and 5 until the L C Meter reads both 300 f and 300 H without error Fig 5 4 Right side view showing calibration control po...

Page 23: ...ontrol 12 Check the accuracy of the Guard Voltage With no external devices or leads connected to the UN KNOWN connector set the RANGE SELECTOR to the 3 f range Adjust the ZERO control so the meter rea...

Page 24: ...___________________________________________________ _____________________________________________________________________________________________________ ______________________________________________...

Page 25: ...ted In the 0 fd position an additional 3 fd has been added in addition to the strays Calibration of Capacitance Ranges Calibration of the capacitance ranges is possible with most commercial bridges Th...

Page 26: ...S 30 Delta Standard Type 130 6 2 AA...

Page 27: ...nductance Standardizer and the Type 130 as shown in Fig 6 2 Place the switch of the Type 130 in the 300 h position Depress the switch on the Inductance Standardizer With the COARSE and FINE ZERO contr...

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Page 29: ...x should be ordered from Tektronix When ordering from Tektronix include a complete description of the part and its 6 digit part number Give the type serial number and modification number if any of the...

Page 30: ...olystyrene EMT electrolytic metal tubular prec precision ext external PT paper tubular F I focus and intensity PTM paper or plastic tubular molded FHB flat head brass RHB round head brass FHS flat hea...

Page 31: ...ches Mounting hardware not included w handle 210 008 101 5000 2 LOCKWASHER internal 8 212 001 101 5000 2 SCREW 8 32 x inch PHS 3 348 001 101 5000 4 FOOT rubber 1 inch Mounting hardware for each not in...

Page 32: ...009 5001 2 STOP 210 047 5001 2 NUT special plastic 210 087 5001 2 WASHER flat 9 64 ID x 5 16 inch OD 213 040 5001 2 SCREW 8 32 x inch THS 11 386 538 5001 6213 1 PLATE cabinet bottom blue wrinkle 386...

Page 33: ...SS 6 260 072 1 SWITCH unwired RANGE SELECTOR mounting hardware not included w switch 7 210 012 101 1 LOCKWASHER internal 3 8 ID x inch OD 8 210 413 101 1 NUT hex 3 8 32 x inch 5 366 011 101 535 1 KNOB...

Page 34: ...ctor 19 210 202 101 5000 1 LUG solder SE 6 211 007 101 5000 4 SCREW 4 40 x 3 16 inch PHS 20 129 020 101 1 ASSEMBLY binding post assembly includes 355 503 101 1 STEM 200 072 101 1 CAP mounting hardware...

Page 35: ...213 004 101 5000 SCREW set 6 32 x 3 16 inch HSS 31 260 072 1 SWITCH unwired RANGE SELECTOR mounting hardware not included w switch 32 210 012 101 1 LOCKWASHER internal 3 8 ID x inch OD 33 210 413 101...

Page 36: ...86 5001 4 NUT keps 4 40 x inch 44 129 020 101 1 ASSEMBLY binding post assembly includes 355 503 101 1 STEM 200 072 101 1 CAP mounting hardware not included w assembly 210 223 101 1 LUG solder ID x 7 1...

Page 37: ...01 1 NUT hex 3 8 32 x 1 2 inch 7 352 002 101 1 ASSEMBLY fuse holder Assembly includes 352 010 101 1 HOLDER fuse 3AG 8 200 582 101 1 CAP fuse 9 210 873 101 1 WASHER rubber ID x 11 16 inch OD 10 101 1 N...

Page 38: ...re not included w resistor 23 210 808 101 753 2 WASHER centering 210 601 754 1 EYELET 0190 ID x 0 323 inch OD 24 212 037 101 753 1 SCREW 8 32 x 13 4 inches Fil HS 211 553 754 1 SCREW 6 32 x 1 inches R...

Page 39: ...7580 3 SCREW 6 32 x 3 8 inch THS 210 803 7580 3 WASHER flat 0 150 ID x 0 375 inch OD 210 457 7580 3 NUT keps 6 32 x 5 16 inch 38 311 015 101 4 RESISTOR variable 10 kohm 311 023 101 1 RESISTOR variable...

Page 40: ...01 2 SCREW sems 4 40 x 5 16 inch PHS 210 004 101 2 LOCKWASHER internal 4 210 406 101 2 NUT hex 4 40 x 3 16 inch 50 136 008 101 4 SOCKET tube 7 pin w ground lugs mounting hardware for each not included...

Page 41: ...ware for each not included w strip 210 085 101 5689 2 WASHER flat 0 093 ID x 9 32 inch OD 210 002 101 5689 2 LOCKWASHER external 2 210 045 101 5689 4 NUT hex 2 56 x 3 16 inch 32 124 014 101 5689 4 STR...

Page 42: ...amic inch h w 11 notches Each strip includes 355 046 5690 2 STUD plastic clip on mounting hardware for each not included w strip 361 009 5690 2 SPACER plastic 0 406 inch long 58 124 014 101 5689 4 STR...

Page 43: ...HS 131 102 5497 1 CONNECTOR 3 contact male projecting Connector includes 129 041 5497 1 POST ground 121 003 5497 2 LOCKWASHER external 4 210 551 5497 2 NUT hex 4 40 x inch mounting hardware not includ...

Page 44: ...l Model No Q T Y DESCRIPTION Start End 14 211 537 5001 4 SCREW 6 32 x 3 8 inch THS 15 381 084 5001 2 BAR w 2 6 32 holes 16 334 0649 5001 1 TAG voltage rating 117 v 50 60 c s mounting hardware not incl...

Page 45: ...20 281 525 C33 0 01 F PT Fixed 400 v 20 285 510 C35 001 F Cer Fixed 500 v GMV 283 000 C36 22 F Cer Fixed 500 v 10 281 511 C45 22 F Cer Fixed 500 v 20 281 510 C47 100 F Cer Fixed 350 v 20 281 523 C48 0...

Page 46: ...d Comp 10 302 104 R33 56 k w Fixed Comp 10 302 563 R35 470 k w Fixed Comp 10 302 474 R45 1 5 meg w Fixed Comp 10 302 155 R46 47 w Fixed Comp 10 302 470 R47 1 meg w Fixed Comp 10 302 105 R48 1 meg w Fi...

Page 47: ...R401 100 k w Fixed Comp 10 302 104 R402 100 k w Fixed Comp 10 302 104 R403 101 753 3 5 k 20 w Fixed WW 5 308 032 R403 754 up 3 k 10 w Fixed WW 5 308 020 R405 1 5 1 w Fixed WW 10 308 058 Switches SW1 3...

Page 48: ...7 18 DIAGRAMS TYPE 130 AA DIAGRAMS...

Page 49: ...AA PARTS LIST TYPE 130 7 19 Figure 7 1 Fixed Oscillator Buffer and Discharge Diode Figure 7 2 Variable Oscillator Buffer and Charge Diode...

Page 50: ...7 20 PARTS LIST TYPE 130 AA Figure 7 3 Cathode Follower Figure 7 4 Mixer Multivibrator and Clamp...

Page 51: ...AA PARTS LIST TYPE 130 7 21 Figure 7 5 Range Capacitors and Power Supply...

Page 52: ...u H R116 C112 TO R97 TO R98 TO R99 TO R100 TO METER ve V45 8 C97 W ARNING 230 VAC ON SWITCH W AFER SIDE E SW 1 E FRO NT O N TO FUSE TO T400 1 SW 1 F REAR 300pF 300uH 100pF 100uH 30pF 30uH 1 0 p F 1 0...

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