The servicing instructions are for use by qualified
personnel only. To avoid personal injury, do not
perform any servicing unless you are qualified to
do so. Refer to all safety summaries prior to
performing service.
T ektronix warrants that the products that it manufactures and sells will be free from defects
in materials and workmanship for a period of one (1) year from the date of shipment. If a
product proves defective during this warranty period, Tektronix, at its option, either will
repair the defective product without charge for parts and labor, or will provide a
replacement in exchange for the defective product.
In order to obtain service under this warranty, Customer must notify Tektronix of the
defect before the expiration of the warranty period and make suitable arrangements for the
performance of service. Customer shall be responsible for packaging and shipping the
defective product to the service center designated by Tektronix, with shipping charges
prepaid. T ektronix shall pay for the return of the product to Customer if the shipment is to
a location within the country in which the Tektronix service center is located. Customer
shall be responsible for paying all shipping charges, duties, taxes, and any other charges for
products returned to any other locations.
This warranty shall not apply to any defect, failure or damage caused by improper use or
improper or inadequate maintenance and care. Tektronix shall not be obligated to furnish
service under this warranty a) to repair damage resulting from attempts by personnel other
than Tektronix representatives to install, repair or service the product; b) to repair damage
resulting from improper use or connection to incompatible equipment; c) to repair any
damage or malfunction caused by the use of non-Tektronix supplies; or d) to service a
product that has been modified or integrated with other products when the effect of such
modification or integration increases the time or difficulty of servicing the product.
THIS WARRANTY IS GIVEN BY TEKTRONIX IN LIEU OF ANY OTHER
WARRANTIES, EXPRESS OR IMPLIED. TEKTRONIX AND ITS VENDORS
DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX’ RESPONSIBILITY
TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND
EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF
THIS WARRANTY. TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE
FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR
HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.
Review the following safety precautions to avoid injury and prevent
damage to this product or any products connected to it. To avoid
potential hazards, use this product only as specified.
Only qualified personnel should perform service procedures.
To Avoid Fire or Personal Injury
Connect and Disconnect Properly. Connect the probe output to the
measurement instrument before connecting the probe to the circuit
under test. Disconnect the probe input and the probe ground from the
circuit under test before disconnecting the probe from the measurement instrument.
Observe All Terminal Ratings. To avoid fire or shock hazard, observe all
ratings and markings on the product. Consult the product manual for
further ratings information before making connections to the product.
The common terminal is at ground potential. Do not connect the
common terminal to elevated voltages.
Do Not Operate Without Covers. Do not operate this product with
covers or panels removed.
Do Not Operate With Suspected Failures. If you suspect there is damage
to this product, have it inspected by qualified service personnel.
Do Not Operate in Wet/Damp Conditions.
Do Not Operate in an Explosive Atmosphere.
Keep Product Surfaces Clean and Dry.
P6339A Instruction Manual
v
General Safety Summary
Safety Terms and Symbols
Terms in This Manual. These terms may appear in this manual:
WARNING. Warning statements identify conditions or practices that
could result in injury or loss of life.
CAUTION. Caution statements identify conditions or practices that
could result in damage to this product or other property.
Terms on the Product. These terms may appear on the product:
DANGER indicates an injury hazard immediately accessible as you
read the marking.
WARNING indicates an injury hazard not immediately accessible as
you read the marking.
CAUTION indicates a hazard to property including the product.
Symbols on the Product. These symbols may appear on the product:
CAUTION
Refer to Manual
WARNING
High Voltage
Double
Insulated
Protective Ground
(Earth) Terminal
vi
P6339A Instruction Manual
Service Safety Summary
Only qualified personnel should perform service procedures. Read
this Service Safety Summary and the General Safety Summary before
performing any service procedures.
Do Not Service Alone. Do not perform internal service or adjustments
of this product unless another person capable of rendering first aid
and resuscitation is present.
Use Care When Servicing with Power On. Dangerous voltages or currents
may exist in this product. Disconnect power, remove battery (if
applicable), and disconnect test leads before removing protective
panels, soldering, or replacing components.
To avoid electric shock, do not touch exposed connections.
P6339A Instruction Manual
vii
Service Safety Summary
viii
P6339A Instruction Manual
Contacting Tektronix
Phone1-800-833-9200*
AddressTektronix, Inc.
Department or name (if known)
14200 SW Karl Braun Drive
P.O. Box 500
Beaverton, OR 97077
USA
Web sitewww.tektronix.com
Sales
support
Service
support
Technical
support
*This phone number is toll free in North America. After office
hours, please leave a voice mail message.
Outside North America, contact a T ektronix sales office or
distributor; see the Tektronix web site for a list of offices.
The P6339A Buffered Passive Probe is specifically designed for
Tektronix oscilloscopes such as the TDS 794D. Each high-bandwidth
input of these oscilloscopes has a fixed 50 W impedance and a
TekProbe III interface. To allow a broader range of measurement
applications, the P6339A probe passively attenuates and then
actively buffers the signal to match the 50 W input impedance.
The oscilloscope settings control the following parameters of the
buffered probe output:
HAttenuation and gain
HAC/DC coupling
HBandwidth limit
HDC offset
For a complete list of specifications, refer to page 9.
Features and Accessories
Table 1 illustrates the user features of the P6339A Buffered Passive
Probe and standard accessories. In addition to those items shown, the
standard accessories also include the following:
HAdjustment tool for probe compensation
HAccessory pouch
HInstructions (this manual)
P6339A Instruction Manual
1
Getting Started
Table 1: Features and accessories
Feature/AccessoryDescriptionApplications/Notes
Marker bandsColor codes the probe to the
oscilloscope input when more
than one probe is in use. Clip
one band around the strain relief
of the probe head and the
matching band on the strain
relief of the probe compensation
box.
Ground collar
Ground lead
Ridged probe cover
Short ground
lead
Retractable
hook tip
SMT KlipChip
and ground
lead
Connects the probe ground to a
ground reference close to the
signal source.
To install, slip the ground collar
onto the probe head then screw
the ridged probe cover down
over the probe tip. Insert the
socket end of the ground lead
into the hole of the ground
collar.
Connects the probe tip to wires
and component leads for handsfree measurement.
NOTE. For a solid connection,
firmly push and twist the hook
tip onto the probe tip before
using.
Connects the probe ground to
small or hard to reach ground
reference points. The ground
lead also connects to a variety
of optional accessories.
2
P6339A Instruction Manual
T able 1: Features and accessories (cont.)
Feature/AccessoryApplications/NotesDescription
Getting Started
Ground lead
with insulated
alligator clip
SureFoot
probe tip set
GuardKeeps fingers away from the
Guard
Connects the probe ground to
ground reference.
Provides fault-free probing of
SMD packages that have lead
spacings of 0.50 mm/20 mil
(red), 0.65 mm/25 mil (blue), or
50 mil (orange).
probe tip for protection against
electric shock.
WARNING. To avoid electric shock when using the probe, keep fingers
behind the guard on the probe body.
Ordering information for replaceable parts and standard accessories
begins on page 35.
P6339A Instruction Manual
3
Getting Started
Optional Accessories
Recommended optional accessories include the SMK4 shown in
Figure 1. This adapter enables connections to very small leads.
Figure 1: SMK4 Micro KlipChip adapter
The P6339A probe is fully compatible with the entire line of 3.5 mm
(compact) accessories.
Ordering information for optional accessories begins on page 35.
Functional Check
Use the functional check procedures in this section to verify basic
probe operation with Tektronix oscilloscopes such as the TDS 794D.
Because this is a functional check, no tolerances are given for the
measured values.
NOTE. To verify warranted specifications and to adjust the probe,
qualified service personnel may use the adjustment and verification
procedures that begin on page 15.
4
P6339A Instruction Manual
Getting Started
T ekProbe Communication
This procedure verifies the operation of the TekProbe III interface.
1. Turn on the oscilloscope. Wait for the power up self test to
complete.
2. Disconnect all cables or probes from the inputs.
3. Press the Autoset button.
4. Press the CH 1 button.
5. Use the Vertical Scale knob to set the vertical scale factor to
100 mV/div.
6. Press the Vertical Menu button.
7. Attach the probe to the CH 1 input.
8. Select the Coupling menu.
9. Verify that AC and DC coupling and GND are selectable by
switching between them.
10.Verify that the channel 1 scale factor is selectable from 10mV/div
to 100V/div.
11. Verify that the Bandwidth is selectable between Full, 20MHz and
150MHz (2nd button along lower bezel).
DC Offset
This procedure verifies that the oscilloscope can compensate for the
DC offset of each volts/division range of the the P6339A probe.
1. With the probe attached to channel 1, set the oscilloscope to the
lowest volts/division setting (10 mV/div).
2. Set the input coupling to GND and set the ground reference to
center screen.
3. Install a retractable hook tip and ground lead on the probe head.
4. Short the input of the probe to probe ground by connecting a
short jumper from the hook tip to the ground lead.
5. Set the coupling to DC.
P6339A Instruction Manual
5
Getting Started
6. Check that the ground reference for each volts per division range
DC Gain and Attenuation
This procedure verifies the correct gain and attenuation of each
volts/division range of the probe.
1. With the probe attached to channel 1, set the oscilloscope to the
2. Connect the output of a standard amplitude calibration generator
3. Set the oscilloscope to DC coupling.
4. For each volts per division range from 10mV/div to 100V/div,
from 10mV/div to 100V/div stays near center screen.
lowest volts/division setting (10 mV/div).
or calibrated DC source to the input of the probe.
adjust the generator or DC source to display four or five divisions
of vertical deflection and check that the measured value of the
input agrees with the output of the generator or DC source.
This completes the functional check procedure.
6
P6339A Instruction Manual
Operating Basics
To obtain the best performance from the P6339A probe, compensate
the probe as needed, observe the maximum input voltage and make
appropriate probe connections.
Probe Compensation
Due to variations in oscilloscope input characteristics, probe
low-frequency compensation may need adjustment after moving the
probe from one oscilloscope to another . If a 1 kHz calibrated square
wave displayed at 1 ms/division shows significant differences
between the leading and trailing edges, perform the following steps
to optimize low-frequency compensation.
1. Connect the probe to the calibration signal on the oscilloscope
front panel.
2. Press AUTOSET or otherwise adjust your digitizing oscilloscope
to display a meaningful waveform.
3. Adjust the trimmer in the probe (accessible through the
compensation box) until you see a perfectly flat-top square wave
on the display. See Figure 2.
Estimate the RMS voltage of a pulse signal before measurement. The
combination of pulse width, duty factor, and DC level determine the
RMS signal voltage. Depending on the application or “installation
category,” this voltage must not exceed the ratings listed in the
Specifications section on page 10.
WARNING. To avoid electric shock when using the probe, do not
touch the metallic portions of the probe head while connected to a
voltage source.
High-Frequency Probe Connections
To minimize inductive effects that cause ringing at high frequencies,
keep all signal and ground leads as short as possible (see Figure 3).
Accessories are included with the probe that provide convenient
means to make short connections (see page 2).
100
90
10
0%
Short ground lead
3“ Ground lead
Figure 3: Ground lead effects
8
P6339A Instruction Manual
Specifications
All specifications in Table 2 apply to the probe only unless marked
as system. The system specifications apply when the P6339A probe
is operated with a TDS 794D in an environment that does not exceed
the limits described in Table 3 on page 11.
All specifications are warranted unless marked as typical. The
n symbol indicates warranted specifications that have checks in the
Adjustment Procedures section.
T able 2: Electrical specifications
System input resistance, typical
System input capacitance, typical8.0 pF at 1 kHz (DC coupled), see Figure 5
System bandwidth, calculatedDC to 500 MHz at 50 mV/div
System dynamic range, typical± 10 divisions at each V/div setting except
System offset range, typical± 10 divisions
System output zero, typical± 0.6 division or less displayed on screen
Aberrations, typical (probe only)+8%, –6% at 10 mV/div
10 MW at DC (DC coupled), see Figure 5
50 V and 100 V/div
after probe cal
+16%, –6% at 20 mV, 50 mV, 0.1 V, and
0.2 V/div
+18%, –6% at 0.5 V/div
+21%, –6% at 1 V/div
+22%, –6% at 2 V/div
+24%, –6% at 5 V/div
1
+35%, –17% at 10 V/div
AC coupling, typical lower bandwidth< 10 Hz
P6339A Instruction Manual
9
Specifications
T able 2: Electrical specifications (cont.)
n
Output zero (probe only)
± 20 mV at 10 mV/div,
± 10 mV at 20 mV/div,
± 5 mV at all other V/div settings
Equipment at this level is typically in a fixed industrial
location.
CAT IILocal-level mains (wall sockets). Equipment at this level
includes appliances, portable tools, and similar products.
Equipment is usually cord-connected.
CAT ISecondary (signal level) or battery operated circuits of
electronic equipment.
around and within a product. Typically the internal environment
inside a product is considered to be the same as the external.
Products should be used only in the environment for which they are
rated.
Pollution Degree 2
Normally only dry, nonconductive pollution occurs.
Occasionally a temporary conductivity that is caused by
condensation must be expected. This location is a
typical office/home environment. Temporary
condensation occurs only when the product is out of
service.
14
P6339A Instruction Manual
WARNING
The following servicing instructions are for use only by
qualified personnel. To avoid injury, do not perform any
servicing other than that stated in the operating instructions
unless you are qualified to do so. Refer to all safety
summaries before performing any service.
Adjustment and Verification Procedures
Use the following procedures to adjust and verify the P6339A
Buffered Passive Probe to warranted specifications. Before beginning
these procedures, photocopy the test record on pages 27 through 29
and use it to record test results. The recommended adjustment and
verification interval is one year .
These procedures adjust and/or verify the following:
HHigh frequency (adjust)
HProbe compensation (adjust)
HRise time and aberrations (adjust)
HOutput zero (adjust and/or verify)
HDC attenuation accuracy (adjust and verify)
HRise time (verify)
WARNING. These procedures are for use by qualified service
personnel only .
P6339A Instruction Manual
15
Adjustment and Verification Procedures
Equipment Required
Table 6 lists the equipment required to perform these procedures.
The types and quantities of connectors may vary depending on the
specific equipment you use.
Table 6: Test equipment
DescriptionMinimum requirementsExample product
OscilloscopeTekProbe interface,
≤ 267 ps risetime
Probe power supplyCompatible with the Tek-
Probe interface
Calibrated DC voltage
source
Digital multimeterDC Accuracy ≤ 0.1%,
High amplitude pulse
generator
Male BNC to probe tip
adapter
Male BNC to 50 W
probe tip adapter
BNC cable
Dual-male-banana-to-
female BNC adapter
Adjustable from 0 V to
400 V with accuracy
≤ 0.05%.
≤ 400 mV range
0 to 50 V pulse, ≤ 250 ps
rise time
Straight-thru013-0226-00
50 W nominal
50 W, 1%, precision
As per description103-0090-00
Tektronix TDS694C
Tektronix Type 1103
Wavetek 9100
Fluke 87 or equivalent
Picosecond Pulse Labs
2700C or 2700B
013-0227-00
012-0482-00
16
Precision inline BNC
terminator
Probe tip shorting
connector
In-line attenuator
50 W± 0.1%
As per description
50 W, 10X
011-0129-00
011-0059-02
P6339A Instruction Manual
Preparation
Prepare the probe for adjustment as follows:
Remove the Top Cover
1. Remove the four screws that attach the top cover to the
compensation box.
2. Remove the top cover .
Prepare the Equipment
1. Connect the male BNC to probe tip adapter (013-0226-00) to the
input of the probe.
2. Attach the probe to the 1103 TekProbe Power Supply.
Adjustment and Verification Procedures
3. If necessary, set the line selector to the correct voltage.
4. Turn on the 1103 power supply.
5. Set the offset button to the off position (button not illuminated).
6. Allow at least 20 minutes for the equipment to warm up.
NOTE. Ambient temperature must be within 20_ C to 30_ C when you
adjust the probe.
P6339A Instruction Manual
17
Adjustment and Verification Procedures
Adjustment Locations
Figure 7 shows the locations of the adjustments and the DIP switches
(S1) that manually set the probe attenuation (gain) range.
R1C4
C7
R3
S1
X1
X10
A1
A0
S1
G3
G2
G1
G0
HF
1
0
HF AdjustLF COMP
10m20m50m.2.5100
10m20m50m.2.5100
1251020
TP2
50
GAIN
Offset,
X1
DIP switches shown in
“1” position
Offset, X10
Figure 7: Location adjustments and DIP switches
18
Offset, X100
P6339A Instruction Manual
Because some of these procedures use the TekProbe 1103 Power
Supply, there is no automatic control of the probe attenuation. You
must manually set the required attenuation for these procedures
according to Table 7.
During normal operation, the probe attenuation for 50 mV/div is the same
System
atten.
System
gain
as 0.1 V/div and the oscilloscope automatically displays the correct
waveform. With the 1103, there are no adjustments for 0.1 V/div.
Procedures
Perform the adjustment and verification procedures in order .
HF Adjust
1. Setup the equipment as shown in Figure 8 on page 20. (For this
procedure, the probe tip does not have to be connected to the
probe compensation signal.)
P6339A Instruction Manual
19
Adjustment and Verification Procedures
2. Measure the voltage on TP2 with a DMM and set the HF Adjust
potentiometer until the voltage at TP2 is –0.50 ± 0.05 VDC.
Compensate the Probe
1. Set up the equipment as shown in Figure 8.
2. With the P6339A probe installed on the 1103 power supply, set
all the DIP switches to the “0” position. See Figure 7 on page 18.
3. Using Table 7 on page 19, set the DIP switches for 50 mV/div.
CH 1
output
1103
Test oscilloscope
CH 1 input
Signal
P6339A
Probe compensation
([0.5 V
, 1 kHz square wave)
p-p
Gnd
50 W BNC cable
Figure 8: Setup for probe compensation and high frequency adjustment
4. Press AUTOSET or otherwise adjust your digitizing oscilloscope
to display a meaningful waveform.
5. Adjust the LF COMP trimmer, C7 (Figure 7 on page 18), until
you see a perfectly flat-top square wave on the display (Figure 9).
CH 1 input
Under compensatedOvercompensatedProperly compensated
Figure 9: Probe compensation waveforms
20
P6339A Instruction Manual
Adjustment and Verification Procedures
Rise Time and Aberrations
1. Set up the equipment as shown in Figure 10.
2. Set all the DIP switches to the “1” position.
3. Set the oscilloscope vertical to 50 mV.
4. Set the pulse generator to 250 mV.
5. Adjust R1 and R3 for a flat response with minimum rise time
(≤ 700 ps).
6. Adjust C4 for minimum aberrations in the first 3 ns.
TDS 694C Digitizing Oscilloscope
High Amplitude Pulse Generator
Figure 10: Setup for rise time and aberrations
P6339A Instruction Manual
BNC-to-probe tip adapter
013-0227-00
P6339A
21
Adjustment and Verification Procedures
Output Zero Adjust
1. Connect the probe as shown in Figure 11.
Digital multimeter
BNC cable
–+
Female BNC-tomale banana
adapter
50 W precision
terminator
Short
Figure 11: Setup for the output offset adjustment
50 W
P6339A
CH 1
output
CH 1
input
1103
22
2. Set the DMM to the mV range.
3. Set all the DIP switches to the “0” position.
4. Set the DIP switches for an attenuation of 10 mV as shown in
Table 7.
5. If necessary, adjust the offset potentiometer marked “10m” for a
DMM reading of 0.0 mV ± 1 mV.
6. Set the DIP switches for each attenuation range listed in Table 7
and adjust the corresponding offset potentiometer for a DMM
reading of 0.0 mV ± 0.5 mV.
P6339A Instruction Manual
Adjustment and Verification Procedures
DC Attenuation Accuracy
1. Connect the probe as shown in Figure 12.
Digital multimeter
–+
Female BNC-to-male
banana adapter
50 W precision
terminator
DC Source
CH 1
output
50 W
BNC cable
BNC-to-probe tip adapter
013-0226-00
P6339A
CH 1
input
1103
Figure 12: Setup for DC attenuation accuracy
2. Set the DMM to the mV range.
3. Set all the DIP switches to the “0” position.
4. Set the DIP switches for an attenuation of 10 mV and adjust the
gain potentiometer marked 10m (top row, left) for the best
compromise that produces an output reading on the DMM within
the limits listed in Table 8 on page 24 for both positive and
negative voltage inputs.
P6339A Instruction Manual
23
Adjustment and Verification Procedures
5. In similar fashion, apply the voltages for each subsequent
attenuation range listed in Table 8 and check the DMM reading.
Adjust the appropriate potentiometer for each range. Note that
some ranges do not have an adjustment.
Table 8: Input voltages for DC attenuation accuracy adjustment
Attenuation settingDCV inDMM reading
10mV
(0 1 0 1 0 0 0 1)
20mV
(0 1 0 1 0 0 1 0)
50mV
(0 1 0 1 0 0 1 1)
0.2 V
(0 1 0 1 0 1 0 0)
0.5 V
(0 1 0 1 0 1 0 1)
1 V1
(1 0 0 0 0 0 1 1)
1
2 V
(1 0 0 0 0 1 0 0)
+100.00 mV98.0 mV to 102.0 mV
–100.00 mV
+200.00 mV98.0 mV to 102.0 mV
–200.00 mV
+500.00 mV98.0 mV to 102.0 mV
–500.00 mV
+1.000 V98.0 mV to 102.0 mV
–1.000 V
+2.500 V98.0 mV to 102.0 mV
–2.500 V
+5.000 V98.0 mV to 102.0 mV
–5.000 V
+10.00 V98.0 mV to 102.0 mV
–10.00 V
–102.0 mV to –98.0 mV
–102.0 mV to –98.0 mV
–102.0 mV to –98.0 mV
–102.0 mV to –98.0 mV
–102.0 mV to –98.0 mV
–102.0 mV to –98.0 mV
–102.0 mV to –98.0 mV
24
1
5 V
(1 0 0 0 0 1 0 1)
10 V1
(1 0 1 0 0 0 1 1)
20 V1
(1 0 1 0 0 1 0 0)
+25.00 V98.0 mV to 102.0 mV
–25.00 V
+50.00 V98.0 mV to 102.0 mV
–50.00 V
+100.0 V98.0 mV to 102.0 mV
–100.0 V–102.0 mV to –98.0 mV
–102.0 mV to –98.0 mV
–102.0 mV to –98.0 mV
P6339A Instruction Manual
Adjustment and Verification Procedures
T able 8: Input voltages for DC attenuation accuracy adjustment (cont.)
Attenuation settingDMM readingDCV in
1
50 V
+250.0 V98.0 mV to 102.0 mV
(1 0 1 0 0 1 0 1)
–250.0 V
–102.0 mV to –98.0 mV
100 V
+400.0 V76.8 mV to 83.2 mV
(1 0 1 0 1 1 0 1)
–400.0 V
1
These ranges do not have adjustments
Rise Time Check
1. Connect the probe as shown in Figure 13.
TDS 694C Digitizing Oscilloscope
–83.2 mV to –76.8 mV
High Amplitude Pulse Generator
Figure 13: Setup for rise time check
2. Set all the DIP switches to the “1” position.
P6339A Instruction Manual
BNC-to-probe tip adapter
013-0227-00
P6339A
25
Adjustment and Verification Procedures
3. Set the pulse generator and check the rise for each attenuation
The high and low limits for output zero represent the acceptable
limits over time. When making the adjustments, set the
10 mV/div adjustment to 0.00 mV ± 1.0 mV and all other
adjustments to 0.00 mV ± 0.5 mV.
NOTE. Return all DIP switches to the “1” position before installing
the top cover on the compensation box.
P6339A Instruction Manual
29
Adjustment and Verification Procedures
30
P6339A Instruction Manual
Maintenance
The procedures in this section describe how to maintain and repair
the P6339A Buffered Passive Probe.
Cleaning
Remove dirt with a soft cloth dampened in a mild detergent and
water solution or isopropyl alcohol.
CAUTION. To avoid damaging the probe, use only a mild detergent
and water solution or isopropyl alcohol; do not use any other
solvents or abrasive cleaners. Do not immerse the probe.
P6339A Instruction Manual
31
Maintenance
Replacing TekProbe Interface Pins
1. To remove the interface pin, grasp the pin with a pair of
needle-nose pliers and gently pull the pin out. See Figure 14.
2. To replace the pin, insert the new pin into the socket and press it
in against a hard surface.
32
Figure 14: Replacing TekProbe interface pins
P6339A Instruction Manual
Maintenance
Removing and Replacing the TekProbe Interface Collar
1. To remove the collar, firmly pull the collar off by hand.
2. To replace the collar, align the smaller group of pins with the
smaller of the two holes in the interface collar and align the tabs
with the slots. Gently press the two pieces together . See
Figure 15.
Tab
Slot
Figure 15: Replacing the TekProbe collar
P6339A Instruction Manual
33
Maintenance
Removing and Replacing the Cable Assembly
1. Unscrew the retaining nut and slide it back on the cable.
2. Firmly grasp the cable close to the threaded housing and pull it
straight out.
3. Remove the nut from the old cable and place it onto the new
cable.
4. Insert the new cable into the housing until it snaps into place.
5. Tighten the retaining nut (approximately 30 inch-lbs).
Cable
Retaining nut
Figure 16: Replacing the cable assembly
Threading housing
34
P6339A Instruction Manual
Replaceable Parts
1
2
14
15
16
17
13
18
5
6
3
4
7
101112
9
8
Figure 17: P6339A replaceable parts and standard accessories
P6339A Instruction Manual
35
Replaceable Parts
Accessories
80009See Optional
2 EA 0.50 mm/20 mil (red), 0.65 mm/25 mil (blue), and