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Performance  Check! Calibration-P6021 

PERFORMANCE  CHECK/CALIBRATION 

PROCEDURE 

General 

The  following  procedure  is  arranged  so  that  the  P6021 

Current  Probe  and  Termination  can  be  calibrated  with  the 

least,  interaction  of  adju

s

tm

ents 

and  reconnection  of  equip­

ment,  The  equipment 

required 

for  the  entire  procedure  is 

shown  in  Fig.  5-1.  Fol

lo

w

i

ng 

the  picture  is  a  complete  list 

of control settings for the test equipment. 

All 

waveforms  shown  in  this  procedure  were  token  with 

Tektronix  Oscilloscope  Comero  System.  The  following 

procedure  uses  the  equipment  listed  under  Test  Equ

ipm

ent 

Required. 

If 

eq

u

ip

m

en

t  is  substituted,  control  settings  or 

equipment  setup  may  need  to  be  altered  to  meet  the  require­
ments  of  the  equipment  used.  Det

a

iled  ope

r

a

t

i

ng  instructions 

for  the  test  equipment 

is 

not  given  in  this  procedure. 

If 

in 

doubt  as  to  the  correct  operation  of  any  of  the  test  equip­

ment,  refer  to  the  instruction  manual  for  that  unit. 

Preliminary  Procedure  for  Complete  Calibration 

To  eliminate  interaction  of  current  probe  and  termination 

adjustments  w

h

e

p

er

f

o

rmi

n

caibration,  the  probe  is  ad­

justed  using  a  standard  50-ohm  termination.  However, 

sp

e

ci

al  impedance  matching  network  must  be  constructed  to 

match  the  62.S-ohm  probe  coble  to  the  50-ohm  termination. 

Usi

n

g  a  GR  insertion  unit,  construct  the  network  shown 

i

F

i

g

5-2.  Mark  the  insertion  unit  for  direction  and  place  the 

cover over the openings. 

,------- -, 

From 

current 

probe 

GR 

InSertiOn

unit 

To 

test 

oscilloscope 

Fig.  5-2.  Impedance  matching  network  constructed  in 

GR 

insertion 

unit. 

Remove  the  top  cover  only  from  the  P6022  Termination. 

The  snap-on  cover  may  be  removed  either  with  the  fingers 
or 

by 

placing  a  small  screwdriver  between  the  cover  and 

the  termination,  near  the  part  number,  and  lurning  slightly. 
The  bottom  cover  must  remain  in  place  whenever  the  te

r

m

i

­

nation is  in  use. 

Focus 

Intensity 

5-3 

TEST  OSCillOSCOPE 

Any  position 
Midrange 

Astigmatism 

Any  position 

Scale  ilium 

As  desired 

Volts/Cm 

.02 

Variable  Volts/Cm 

Cal 

Gain 

XIO 

Input  Coupling 

DC 

T rigger  Slope 

Triggering 

Source 

Int-AC 

Time/Cm 

.05 

Horizontal 

Display 

Internal 

5X  Magnifier 

Off 

Amplitude 
Voltage  Range 

Pulse  Polarity 

PULSE  GENERATOR 

30 

50 

NOTE 

Sweep 

If  completing  Performance  Check  only,  do  steps 

a, 

1 b, 

and 

Ie. 

Then  proceed  to  step  2. 

1. 

Adjust  Current  Probe 

a.  Connect  a  50-ohm  GR  termination  to  one  of  the  pulse 

generator charge line connectors. 

IA) 

� 

IB) 

IC) 

e22 

C25 

Fig.  5-3.  P6021  aberrations,  showing 

IAI 

location  of  probe  ad­

justments, 

IBI 

four-centimeter  display  of  pulse  generator  output, 

and 

(C I 

location of  termination  adjustments. 

Summary of Contents for P6021

Page 1: ...IMfJuu1iD1t MIJIWlIl P6021 CURRENT PROBE AND TERMINATION Tektronix Inc P O Box 500 Beaverton Oregon 97077 Phone 644 161 Cables Tektronix 070 0947 00 First Printing MAR 1969 Revised MAY 1981 ...

Page 2: ...ion of Tektronix Inc Products of Tektronix Inc and its subsidiaries are covered by U S and foreign patents and or pending patents TEKTRONIX TEK SCOPE MOBILE and are registered trademarks of Tektronix Inc TELEQUIP MENT is a registered trademark of Tektronix U K Limited Printed in U S A Specification and price change privileges are reserved ...

Page 3: ...Verso Filler Page z z ...

Page 4: ...Fig 1 1 P6021 Current Probe and Termination ...

Page 5: ... Aberrations Probe and Termination only 2 mA mV and 4 4 or less not to exceed 10 mA mV 5 peak to peak within 50 nanoseconds of step 1 1 or less total not to exceed 2 peak to peak thereafter Risetime Probe and Termination only 2 mA mV 4 5 nanoseconds or less 10 mA mV 4 nanoseconds or less Characteristic Risetime with 580 Series test oscillo scope 2 mA mV 10 mA mV Tilt 2 mA mV 10 mA mV Sensitivity A...

Page 6: ...depending upon the amplitude of the signal The overall deflection factor including the probe and termination may be found quickly by multiplying the slide switch position by the oscil loscope deflection factor The following is an example Termination switch setting 1 0 mA mV Volts div switch setting 20 mV div 1 0 mA 20 mV 200 mA mV X div div Probe Slider The thumb controlled probe slider opens the ...

Page 7: ...ing Instructions P6021 2 8 pH 1 7 nH 004 n Fig 2 3 Insertion impedance of the P6021 Current Probe the probe is clamped around a conductor When observing fast rise signals this should be taken into consideration Fig 2 3 illustrates the approximate insertion impedance of the P602 1Current Probe Probe Shielding The current probe is shielded to minimize the effect of external magnetic fields However s...

Page 8: ...fference in level between the pulses induced in the paralled windings of the secondary and matches the balanced probe winding to the cable 3 1 As indicated on the probe body the turns ratio of the P6021 Curent Probe is 125 1 This refers to the number of windings in the secondary of the probe transformer The two turns ratios manufactured by Tektronix Inc are 50 1 and 125 1 Due to the comparatively ...

Page 9: ...r in the slider 7 Remove the two Phillips head screws which secure the spring retainer holder to the probe body Remove the holder 8 Lift the circuit board transformer and cable out of the probe body as a unit The transformer may be unplugged from the circuit board The P6021 Current Probe is shown disassembled in the Mechanical Parts List section 9 Reassemble the probe reversing the above procedure...

Page 10: ...ust ment is made For best overall instrument performance make each adustment to the exact setting even if the CHECK is within the allowable tolerance EQUIPMENT REQUIRED General The following items are required for calibration of the P6021 Current Probe and Termination Specifications given 5 1 are the minimum necessary for accurate calibration All test equipment is assumed to be correctly calibrate...

Page 11: ...ring first 50 nanoseconds 1 1 total of 2 peak to peak thereafter 9 Foot Probe Aberrations within 4 4 total of 5 peak to peak during first 50 nanoseconds 1 1 total of 2 peak to peak thereafter o 3 Check Risetime REQUIREMENT 1 0 mA mV risetime of 6 5 nano seconds 2 mA mV risetime of 6 7 nan seconds PERFORMANCE Correct ___ incorrect list ex ceptions __ _ o 4 Check Sensitivity REQUIREMENT 2 mA mV sens...

Page 12: ...k must be constructed to match the 62 S ohm probe coble to the 50 ohm termination Using a GR insertion unit construct the network shown in Fig 5 2 Mark the insertion unit for direction and place the cover over the openings H From current probe GR InSertiOn unit To test oscilloscope Fig 5 2 Impedance matching network constructed in GR insertion unit Remove the top cover only from the P6022 Terminat...

Page 13: ...ation slide switch to the 2 mA mY position b Connect the P6021 Probe from the Calibration Fixture to the termination c Adjust the pulse generator output amplitude for four centimeters of deflection Position the top of the display within the CRT viewing area d CHECK 5 Foot Probe First 50 nanoseconds of step for aberrations within 3 3 total of 4 peak to peak 1 1 total of 2 peak to peak after the fir...

Page 14: ...e termination slide switch to the 1 0 mA mV position I CHECK CRT display for four centimeters of deflection 3 not including GR attenuator error See Fig 5 5B 5 Check Low Frequency Response a Connect the banana plug to BNC adopter the BNC male to GR adapter and the Calibration Fixture to the out put of the low frequency signal generator Connect the P6021 Probe to the Calibration Fixture b Set the te...

Page 15: ... 00 283 01 82 00 1 08 0526 00 1 08 0526 00 1 08 0529 00 Capacitors 2 5 9 pF Var 51 pF Inductors Resistors 50 p H 50 p H 1 6 p H Cer Resistors are fixed composition 1 0 unless otherwise indicated R1 0 R1 2 R1 3 R1 4 T1 T14 REV B JUNE 1975 311 0635 00 31 1 0635 00 317 0821 00 31 7 0121 00 120 0614 00 1 20 0468 00 1 k n Var 1 k n Var 820n 120n Transformers Current Ve W l e W Toroid 6 turns bifilar 40...

Page 16: ... 283 0140 00 1 31 0602 00 131 0106 02 1 08 0525 00 108 0395 00 fixed composition 317 0101 00 321 0077 00 321 0069 00 321 0039 00 321 0038 00 317 0036 00 311 0605 00 260 0723 00 1 0 unless 5 25 pF Var 5 25 pF Var 4 7 pF Connectors Cer Receptacle electrical male Receptacle electrical female Inductors Resistors 140 fLH 64 fLH otherwise indicated 1000 61 90 51 10 24 90 24 30 3 60 2000 Var Switch Slide...

Page 17: ...erio 1 Model No t Description Eff Disc y 1 2 3 4 5 6948 PROBE PACKAGE w termination 6949 PROBE PACKAGE w termination PROBE PACKAGE w termination 9 root probe probe package includes TERMINATION coaxial 6948 PROBE PACKAGE w accessories 6949 PROBE PACKAGE w accessories PROBE PACKAGE w accessories 9 foot probe probe package includes 6948 1 PROBE P6021 6949 1 PROBE P6021 1 PROBE P6201 9 foot 2 CLIP pro...

Page 18: ...on y 1 2 3 4 5 PROBE P6021 PROBE P6021 PROBE P6021 9 foot probe includes 1 BODY probe top 1 BALL metal 0 094 inch OD 1 SLIDE ASSEMBLY upper shell 1 CONTACT electrical 1 T1 TRANSFORMER 1 SPRING helical compression 1 RETAINER return spring 1 HOLDER spring return 2 SCREW 2 56 x 1 4 inch RHS 1 BODY probe bottom 1 BODY probe bottom 1 BODY probe bottom 9 foot probe 1 HOLDER circuit board 6 SOCKET pin co...

Page 19: ...TION Q Serial Model No Eff Disc Y 1 2 J 4 5 TERMINATION P6021 termination includes Description COVER termination top w knob CONNECTOR electrical BNC male FRAME termination CONNECTOR BNC female ASSEMBLY circuit board assembly includes INSULATOR plate BOARD circuit mounting hardware not included w assembly 2 SPACER sleeve 0 087 ID x 0 1 87 inch OD 2 WASHER fiat 0 090 ID x 0 188 inch OD 2 LOCKWASHER ...

Page 20: ... FORMER I I LI4 I 3T J R3b CoRE r 04 TI4 t P2 0 J 20 rl J R2ZJ n f f P39 LIO I I I I 1 _ 50M RIS 820 LI2 I I I I I I 5O u 1 4 CI3 2 I I I 1 ADDED AFTER 1 1 2 49 I C 50 C 2Z 5 25 L 31 t04 H R35 3 1 34 2 4 5 i III I I I II 5 ILLU L_____________L _____ _ I 1 I I I __ J 4 1 P o02 1 PROBE PG02 1 PA551VE TE RMINATIOt l I TYPE P60 2 J CURRENT PROBE TERMINATION 0670 R EV APR 1974 ...

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