Instructions P6434 Mass Termination Probe 070-9793-02 There are no current European directives that apply to this product. This product provides cable and test lead connections to a test object of electronic measuring and test equipment. Warning 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.
Copyright © Tektronix, Inc. All rights reserved. Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes that in all previously published material. Specifications and price change privileges reserved. Printed in the U.S.A. Tektronix, Inc., P.O. Box 1000, Wilsonville, OR 97070–1000 TEKTRONIX, TEK, and MagniVu are registered trademarks of Tektronix, Inc.
WARRANTY Tektronix 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.
Table of Contents General Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii v Contacting Tektronix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Labels . . . . . . . . . . . . . . . . . . . . . .
Table of Contents List of Figures Figure 1: P6434 Mass Termination Probe . . . . . . . . . . . . . . . . . . . . . . . Figure 2: Applying labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3: Connecting to a surface- or straddle-mounted connector . . Figure 4: Connecting the Low-Profile Extender . . . . . . . . . . . . . . . . . Figure 5: Releasing the probe tip from the latch housing . . . . . . . . . . Figure 6: Latch housing dimensions . . . . . . . . . . . . . . . . .
General Safety Summary 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. While using this product, you may need to access other parts of the system. Read the General Safety Summary in other system manuals for warnings and cautions related to operating the system.
General Safety Summary Symbols and Terms 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.
Preface These instructions cover the following topics: H Operating basics H Designing an interface between the P6434 probe and a system under test H Service information H Replaceable parts list Information in these instructions assumes your system under test (SUT) is based on a microprocessor. If your SUT is not based on a microprocessor, you should substitute the type of device on which your system is based for “microprocessor” throughout these instructions.
Preface vi P6434 Probe Instructions
Operating Basics The P6434 Mass Termination Probe allows you to connect 34 logic analyzer channels to a microprocessor probe adapter or directly to your SUT in one fourth the physical area needed to connect standard probes. The vertical clearance dimension is less than a half inch when used with the Low-Profile Extender. To connect directly to your SUT, you must include compatible Mictor connectors in your circuit board design.
Operating Basics Labels The P6434 probe is shipped with a sheet of labels. The labels are color coded to match the probe connectors on the logic analyzer and are different shapes for the probe tip and module ends of the probe. There are two methods you can use to apply labels to the P6434 probe: standard or custom. You need to decide which method to follow prior to applying labels.
Operating Basics Pin 1 label Recess on pin 1 side Pin 38 side Beveled corner Pin 1 side Beveled corners End view Pin 38 side Recessed edge Figure 2: Applying labels Connecting the P6434 Probe to the SUT The P6434 probe can connect to surface-mounted or straddle-mounted Mictor connectors. You can use the Low-Profile Extender (available as an optional accessory) to connect the probe to systems with as little as a half inch of clearance between circuit boards.
Operating Basics 2. Position the probe tip perpendicular to the mating connector, and gently connect the probe as shown in Figure 3. 3. When connected, push down the latch releases on the probe to set the latch. Push down to latch after probe is connected Pin 1 Optional latch housing Pin 1 Optional latch housing Pin 1 Push down to latch after probe is connected Figure 3: Connecting to a surface- or straddle-mounted connector 4.
Operating Basics Low-Profile Extender Connection You can use the Low-Profile Extender to connect the P6434 probe to systems with as little as a half inch of clearance between circuit boards. The extender connects to Mictor connectors with or without a latch housing. To connect the probe using the extender, follow these steps: 1. Line up the pin 1 indicator on the low-profile end of the extender with pin 1 on the connector in your SUT. The Mictor connector is keyed to prevent incorrect connections. 2.
Operating Basics Disconnecting the P6434 Probe from the SUT To disconnect the P6434 probe, follow these steps: 1. Gently pull the latch release grip to release the probe tip from the latch housing as shown in Figure 5. Grasp sides and gently pull Latch release grip Figure 5: Releasing the probe tip from the latch housing CAUTION. To avoid damage to the probe and mating connector, hold on to the latch release grip and gently pull the probe straight out of the connector.
Designing an Interface Between a P6434 Probe and a SUT This section provides you with some guidelines for designing your own P6434 probe interface on the SUT. The guidelines contain information on the following topics: H Mictor connectors H Dimensions and placement of connectors H Mechanical layout and pinout of connectors H Probe channel assignments H Loading and equivalent circuits Mictor Connectors and Latch Housings The P6434 probe contains a 38-pin Mictor connector.
Designing an Interface Between a P6434 Probe and a SUT You can purchase latch housing mechanisms to use with Mictor connectors. The latch housing surrounds the Mictor connector in your SUT and provides positive retention of the P6434 probe. Figure 6 shows the dimensions of the optional latch housings. 31.50 mm (1.240 in) 25.40 mm (1.000 in) 9.90 mm (.390 in) 5.08 mm (.200 in) 12.19 mm (.480 in) 3.63 mm (.143 in) .51 mm (.020 in) 28.20 mm (1.110 in) 2.64 mm (.104 in) 4.95 mm (.195 in) 1.27 mm (.
Designing an Interface Between a P6434 Probe and a SUT Dimensions and Placement of Compatible Mictor Connectors You can use compatible surface-mounted or straddle-mounted Mictor connectors in your circuit board design. The connectors should be placed as close as possible to the device under test. The placement of Mictor connectors depends on whether you plan to connect the P6434 probe directly to the SUT or use the Low-Profile Extender with the probe.
Designing an Interface Between a P6434 Probe and a SUT Low-Profile Extender Connection When placing Mictor connectors in your SUT for use with an extender, you need to keep one inch of clear space on the pin 1 side from the center of the Mictor connector in your SUT. The vertical clearance for the one inch of clear space under the extender is 0.2 inches, as shown in Figure 8. NOTE. Be sure to orient pin 1 on the Mictor connector in your SUT to direct the extender off the board as shown in Figure 4. 25.
Designing an Interface Between a P6434 Probe and a SUT Mechanical Layout and Pin Numbering Sequence of Compatible Mictor Connectors Each compatible Mictor connector has 43 pins; pins 39 through 43 are grounded. Pins 1, 2, 37, and 38 are open. Figure 9 shows the positions and spacing between the pins, the keyhole, and the latch housing mounting holes of a surface-mounted connector. Figure 11 on page 14 shows the pin assignments. NOTE.
Designing an Interface Between a P6434 Probe and a SUT Figure 10 shows the positions and spacing between the pins and latch housing mounting holes of a straddle-mounted connector. NOTE. The straddle-mounted connector does not have a keyhole. Be sure to position pin 1 correctly when building the SUT to maintain the correct mapping of signals from your SUT to the logic analyzer probe sections and channels. 2.80 mm (.110 in) 19X 0.43 mm (.017 in) 5X .99 mm dia. (.039" .
Designing an Interface Between a P6434 Probe and a SUT Figure 11 shows the pin assignments for the surface-mounted connector. Pin assignments are the same for the straddle-mounted connector. Note the difference between the Tektronix P6434 pinout and the Mictor connector pinout. Tektronix uses a counterclockwise pin assignment. Pin 1 is located at the top left, and pin 2 is located directly below it. Pin 20 is located on the bottom right, and pin 21 is located directly above it. AMP, Inc.
Designing an Interface Between a P6434 Probe and a SUT NOTE. When designing Mictor connectors into your SUT, always verify which pin-numbering sequence your CAD system uses. Tektronix P6434 Pinout AMP, Inc. Pinout Pin 1 Pin 38 Pin 1 Pin 2 Pin 19 Pin 20 Pin 37 Pin 38 Figure 11: Mictor connector pin numbering sequences (component side) Probe Channel Assignments The 17 channels to which the module end connects on the logic analyzer cannot be changed.
Designing an Interface Between a P6434 Probe and a SUT Table 3: Pin 1 side probe channel assignments (cont.) Tektronix P6434 probe pin number AMP, Inc.
Designing an Interface Between a P6434 Probe and a SUT Pin 1 Indicator Be sure to place a pin 1 indicator on your circuit board during design. If you include the latch housing in your design, it will obscure the pin 1 indicator on the Mictor connector. Although the Mictor connector is keyed, you still need to know the location of pin 1 when connecting the P6434 probe. Loading and Equivalent Circuits The load presented to the SUT by the P6434 probe is low.
Designing an Interface Between a P6434 Probe and a SUT The Low-Profile Extender used with the P6434 probe increases the load. The additional load is equivalent to a 100 W resistor connected in series with approximately three inches of 75 W coaxial cable to the probe tip. Although the extender can increase the loading significantly, using the extender might be necessary in situations where there is as little as half an inch of clearance.
Designing an Interface Between a P6434 Probe and a SUT 18 P6434 Probe Instructions
Service Information This section contains information on the following topics and tasks: H Probe maintenance H Probe circuit description H Specifications H Disassembly and reassembly procedures H Functional verification procedure Maintenance The P6434 probe does not require scheduled or periodic maintenance. To maintain good electrical contact, keep the probe free of dirt, dust, and contaminants. Also, ensure that any electrically conductive contaminants are removed.
Service Information Circuit Description The P6434 probe contains 34 sets of signal connections (32 used as data channels and two used as clock or qualifier channels). The probe tip connection is a 38-pin Mictor connector by AMP, Inc. Each signal line has a 20 kW ± 1% resistor (shunted by a 0.23 pF capacitor) in series with an approximately five foot long section of 75 W coaxial cable.
Service Information Table 7: Environmental specifications* Characteristic Description Temperature Maximum operating +50° C (+122° F)[ Minimum operating 0° C (+32° F) Non-operating –55° C to +75° C (–67° F to +167° F) Humidity 10 to 95% relative humidity Altitude Operating 4.5 km (15,000 ft) maximum Non-operating 15 km (50,000 ft) maximum Electrostatic immunity The probe is not static sensitive * Designed to meet Tektronix standard 062-2847-00 class 5.
Service Information Disassembling the Probe The following procedures describe disassembling the P6434 probe. If you are installing the connector parts replacement kit, follow the Probe Tip procedures on pages 22 and 25. If you are installing either of the cable replacement kits, you must also perform the Latch Release Grip and Module End procedures.
Service Information CAUTION. To prevent damage to the elastomer, use tweezers and handle the elastomer connectors on the flat areas adjacent to the gold plated contact pads. The elastomer connectors are very small and are susceptible to contamination by natural skin oils and mishandling. 3. Using tweezers on the flat areas adjacent to the gold plated contact pads, remove the elastomer connectors. See Figure 19 on page 26. 4.
Service Information Module End To disassemble the module end of the probe, refer to Figure 17 and follow these steps: 1. On the module end, remove the four screws from the outside of the connector housing using a .050 inch hexagonal screwdriver, and open the housing. 2. Remove the pin 1 and pin 38 cables with connectors attached. 3. Remove the trim pieces from the connector housing.
Service Information Reassembling the Probe Use the following procedures to resassemble the P6434 probe. NOTE. When reassembling the probe, you must use both the new board holder and both elastomer connectors included with the service kit. These components have design improvements that must be replaced as a set. Probe Tip To reassemble the probe tip, refer to Figure 18 and follow these steps: 1. If you are reusing the Mictor connector circuit board, remove the old board holder. 2.
Service Information Gold plated contact pads Tweezer Elastomer Elastomer Elastomer slot Ledge Ledge Figure 19: Positioning the elastomer connector 5. Place the circuit board attached to the pin 1 cable into the back (cable side) of the board holder as shown in Figure 20. 6. Press the front (connector side) of the circuit board attached to the cable down until it snaps into place in the board holder.
Service Information 8. Position a latch release on each side of the case half. See Figure 21. Figure 21: Reattaching the latch releases and case halves 9. Align the pin 1 case half with the pin 1 side of the connector, attach the case halves, and reconnect the screws as shown in Figure 21. Latch Release Grip To reassemble the latch release grip, follow these steps: 1. Place the latch release cords into the latch releases as shown in Figure 22. 2.
Service Information Latch release fits between these flanges Figure 22: Reattaching the latch release cords to the latch releases 3. Place the other end of the latch release cords into the latch release grip and reconnect the latch release grip as shown in Figure 23. Figure 23: Reconnecting the latch release cords to the latch release grip 4. You may need to reapply labels. Refer to the description of Labels on page 2 for information on how to apply labels.
Service Information Module End To reassemble the module end of the probe, follow these steps: 1. If you are installing either the pin 1 or pin 38 cable kit, follow the procedure to reassemble the probe tip. 2. On the module end, position the trim pieces in the connector housing as shown in Figure 24. Trim piece Connector key Figure 24: Reassembling the module end 3. Orient the nonkeyed side of the connector to the case half with the label, and position the connector in the case halves. 4.
Service Information Functional Verification This procedure checks the basic functionality of the probe by verifying that the probes recognize signal activity at the probe tips. No calibration is necessary.
Service Information 7. Go to the Setup menu for the logic analyzer module to which the probes are connected. 8. Click the Set Thresholds button to display the threshold settings. Set the threshold for all channels to be 0.7 volts and close the Probes Threshold dialog box. 9. Click the Show Activity button to display the Activity Indicator dialog box. 10. Verify that the Activity Indicator dialog box shows activity on all probe channels connected to the test fixture.
Service Information 32 P6434 Probe Instructions
Replaceable Parts This chapter contains a list of the replaceable components for the P6434 Probe. Use this list to identify and order replacement parts. Parts Ordering Information Replacement parts are available through your local Tektronix field office or representative. Changes to Tektronix products are sometimes made to accommodate improved components as they become available and to give you the benefit of the latest improvements.
Replaceable Parts Parts list column descriptions Column Column name Description 1 Figure & index number Items in this section are referenced by figure and index numbers to the exploded view illustrations that follow. 2 Tektronix part number Use this part number when ordering replacement parts from Tektronix. 3 and 4 Serial number Column three indicates the serial number at which the part was first effective. Column four indicates the serial number at which the part was discontinued.
Replaceable Parts Manufacturers cross index Mfr. code Manufacturer Address City, state, zip code 80009 TEKTRONIX INC 14150 SW KARL BRAUN DR PO BOX 500 BEAVERTON, OR 97077–0001 00779 AMP INC. CUSTOMER SERVICE DEPT PO BOX 3608 HARRISBURG, PA 17105–3608 0GV90 GLOBTEK INC 186 VETERANS DRIVE NORTHVALE, NJ 07647–2303 60381 PRECISION INTERCONNECT CORP. 16640 SW 72ND AVE PORTLAND, OR 97224 Replaceable parts list Fig. & index number 25–0 Tektronix part number Serial no.
Replaceable Parts Replaceable parts list (cont.) Fig. & index number Tektronix part number Serial no. effective Serial no. discont’d Mfr. code Mfr. part number 80009 118-9478-01 MANUAL,TECH:INSTRUCTION, P6434 PROBE 80009 070-9793-02 1 LATCH HOUSING; STRADDLE MOUNT (NOT SHOWN) 80009 105-1088-00 105-1089-00* 1 LATCH HOUSING; SURFACE MOUNT (NOT SHOWN) 80009 105-1089-00 010-0612-00 1 LOW–PROFILE EXTENDER, 4.
Replaceable Parts 2 1 3 The cable kits are not interchangeable. Be sure to order the correct kit number for items 7 or 8.
Replaceable Parts 38 P6434 Probe Instructions
