Tektronix p6062b schematic

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CUSTOMER

SERVICES

SUPPORT

01

0

6062

15

P6062B

PASSIVE

PROBE

The P6062B Probe oscilloscopes having

The

attenuation

of

changing the volts/division readout

of

the probe.

A ground reference push with

either 1 X

display reflects the signal Ad{ustable frequency compensation

sC

.ope

input

The P6062B Probe

All

meter). compatible

is

a passive probe with 1 X

an

input

capacitance range

(1 X or

lOX)

is

selected

button

on

or

lOX

attenuation

from

the

. .

is probe lengths with

available in three lengths:

both

terminate

readout and non-readout oscilloscopes.

or

lOX selectable

of 15-47 pF and

by

a slide switch, on the probe

circuitry

the

. This feature can also

probe.

is

provided in

in a compensation

in readout oscilloscopes

body

of

the probe permits the user

the

compensation

3.5

foot ( 1.1

box

attenuation

an

input

be

used

to

meter), 6

with

BNC connector . The BNC connector

for

use

with

resistance

body, to

include the attenuation

identify

box

to

foot (1.8 meter) and 9

of 1MD._

that

also

to

obtain

a ground reference

which

trace

match the probe

dc

to

105

has

the

capability

ratio

of a multitrace

to

the oscillo-

foot

MHz

•

(2.7

is

P6062B PROBE

ELECTRICAL

Attenuation:

Input

Resistance:

Approximate

Input

Compensation Range:

Input

1X

10X

Impedance:

1 X position;

10X position;

1 X position;

10X position; 10

Capacitance

3.5

foot

See

Fig. 1 and 2. Typical parallel reactance

15

pF

to

SPECI

same

as

oscilloscope specification.

within

3%

(oscilloscope

same

as

oscilloscope specification.

MD.

within

(with

probe connected and compensated in 10X position):

( 1.1 m) Probe

100 pF

13.5 pF

47 pF.

6

FICATIONS

input 1 MD.

0.5% (oscilloscope

foot

(1.8 m) Probe

105 pF

14 pF

(Xp)

within

input, 1 MD.

9

foot

and resistance (Rp)

2%).

within

2%).

(2.7 m) Probe

135

pF

17 pF

vs.

frequency.

Minimum

*When

used

/

Bandwidth (-·3 dB)

3.5

foot

1X

10X

with

466

Oscilloscope

with

probe compensated in 10X position:

foot

(1.8 m) Probe

( 1.1 m) Probe 8 MHz

*100

MHz

with

bandwidth ~ 105 MHz.

6

*100

6MHz

MHz

9

foot

(2.7 m) Probe

4.5 MHz *95

MHz

j

2

100 K

P6062B PROBE

-

~-

100 K

1\

iii

~

:J:

2

!l.

X

0

Z

<{

!l.

a::

Fig.

1 TypiCliI perellel r ..ctanCli

f1'equency

10K

I K

100

for

3.5

r-...

l-

foot

I'

I"

t-.

t-

FREQUENCY

11.06

meter)

Xp

I\Rp

r-...

10

(MHz)

IXp)

and 6

end

foot

1\

raistence

(1.8

meter)

"'

!-....

100

IRp)

I

VI.

probe.

iii

~

:J:

Q

X

0

Z

<{

a::

10 K

!l.

"

!l.

1 K

- .

>--

t-

100

FREQUENCY

Fig

. 2 TypiCliI perellel reectlinCli 1X p)

IRp

I

VI.

frequency

Xp

for 9 foot

Rp

\.

10

(MHz)

12.7

1\

'"

end

meter)

100

relilUlnCII

probe.

w

(!)

<{

I-

...J

0

>

600

400

300

200

100

kHz

lOX

1\

"'

IX

11

.

Fig. 3

MHz

Input

FREQUENCY

voltage

VI.

frequency.

MHz

10

....

...~

100

MHz

3

P6062B PROBE

Maximum

Input

Voltage

(see

position;

1 X

lOX

Fig. 3):

position;

EI\lVIRONMEI\lTAL

Operating

Ranges

(probe operated

Temperature:

Altitude:

PHYSICAL

Net Weight (including accessories):

foot ( 1.1

3.!i foot

(1.8 m) Probe:

6

foot

(2.7 m) Probe:

9

CIRCUIT

1 X

Switch

LOADING

Position:

This position loads a input

impedance

pensation

100

V (dc + peak

500 V (dc + peak ac)

within

specifications over the

-15°C

(+5°F)

To

4572

meters (15,000 feet).

m) Probe:

OPERATING CONSIDERATIONS

circuit

(1

MQ

and

network

.

ac)

to

450

kHz

to

3.5

MHz

following

to

+75°C

(+167°F).

128

grams (4.5 oz.).

142

grams (5.0 oz.).

156

grams (5.5 oz.).

more than the lOX

15

to

47 pF) paralleled

derated

ranges):

position.

by

to

35

V at 10

to

25

V at

100

The test

the capacitance

point

MHz.

MHz,

will

see

the oscilloscope

of

the probe cable and com·

lOX Switch Position:

Although the test signal. Therefore, when possible, select low·impedance test points. Also, increases, probe Fig.

PROBE GROUNDING

A

passive

probe

is

a capacitive

will

form

a series resonant

above

circuit

resonance. These oscillations

leads and probe

tip

circuit

connections should

GROUND REFERENCE

When the signal

Ground

is

grounded

Reference push

through

the probe 9

the probe dc

1,

2, and 3).

divider

that

button

input

resistance

input

impedance decreases,

for

high·frequency components. I nductance

will

"ring"

if

driven

can

appear on the oscilloscope display and

be

kept

as

short

as

switch

is

pressed

MQ

resistor.

/'

is

10

MQ,

which

by

a signal containing significant frequency components at

possible

with

to

maintain the best

the slide switch in the 1 X

it

can load a high·impedance

increases the loading effect

introduced

distort

the

fidelity.

or

lOX

by

a long signal

true

attenuation

circuit

and

distort

as

signal frequency

of

the probe

waveform. Ground

(see

or

ground lead

or

position, the test

4

Due

to

slight variations in necessary other

for

to

compensate

dual

(multitrace)

PROCEDURE

1. Make sure probe

2.

Touch

probe

approximately

available

Adjust

3.

4 divisions

on

oscilloscope.)

probe compensation

the

attenuation

tip

to

oscilloscope

the

input

capacitance between oscilloscope

probe whenever

units.

switch

calibrator

in

amplitude.

for

optimum

PROBE COMPENSATION

it

is

in

(Use a 1

transferred

lOX

position.

output

kHz

square wave generator

flat

top

from

connector

on

display

input

amplifiers (even

one

instrument

and display several cycles

(see

Fig_ 4).

to

from

alternate source

another,

of

the

or

from

of

calibrator

P6062B PROBE

same

type),

one channel

square wave

if

calibrator

it

is

usually to

output

an-

at

is

not

Fig_

4 Compensation adjustment location.

5