Tektronix TLA 720 Service Manual
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Tektronix TLA 720 Service Manual

Tektronix TLA 720 Service Manual

Color benchtop chassis and expansion chassis
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  • Page 1 sales@artisantg.com artisantg.com (217) 352-9330 | Visit our website - Click HERE...
  • Page 2 Service Manual TLA 720 Color Benchtop Chassis and TLA 7XM Expansion Chassis 071-0699-00 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...
  • Page 3 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. Tektronix, Inc., 14200 SW Karl Braun Drive, Beaverton, OR 97077...
  • Page 4 Tektronix, with shipping charges prepaid. Tektronix 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.
  • Page 5 SOFTWARE WARRANTY Tektronix warrants that the media on which this software product is furnished and the encoding of the programs on the media will be free from defects in materials and workmanship for a period of three (3) months from the date of shipment.

  • Page 6: Table Of Contents

    ......... . 2–71 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 7 ..........4–36 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 8 ........7–3 Index TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 9 Figure 4–20: TLA 700 startup sequence ......4–32 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 10 ......7–15 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 11 ......... 5–2 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 12 ......7–2 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 13 Table of Contents viii TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 14: General Safety Summary

    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. TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 15 CAUTION indicates a hazard to property including the product. Symbols on the Product. The following symbols may appear on the product: WARNING Protective Ground CAUTION Double High Voltage (Earth) Terminal Refer to Manual Insulated TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 16: Service Safety Summary

    To avoid electric shock, do not touch exposed connections. X-Radiation. To avoid x-radiation exposure, do not modify or otherwise alter the high-voltage circuitry or the CRT enclosure. X-ray emissions generated within this product have been sufficiently shielded. TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 17 Service Safety Summary TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 18: Preface

    A module is composed of circuit cards, interconnecting cables, and a user-accessible front panel. Safety Symbols and terms related to safety appear in the Service Safety Summary found at the beginning of this manual. xiii TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 19: Contacting Tektronix

    For other In North America: information 1-800-TEK-WIDE (1-800-835-9433) An operator will direct your call. To write us Tektronix, Inc. 14200 SW Karl Braun Drive Beaverton, OR 97077 Website Tektronix.com TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 20: Introduction

    H Supports removal and replacement of fuses, knobs, chassis, and other mechanical parts listed in the replaceable parts list. This manual does not support component-level fault isolation and replacement. TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 21: Service Offerings

    Warranty Repair Service Tektronix warrants this product for one year from date of purchase. The warranty appears behind the title page in this manual. Tektronix technicians provide warranty service at most Tektronix service locations worldwide. The Tektronix product catalog lists all service locations worldwide.

  • Page 22: Specifications

    Specifications...

  • Page 24: Benchtop Chassis Specifications

    Baffles balance the airflow from the front to back and across occupied slots in the chassis. 1–1 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 25 The benchtop chassis has an autoconfigurable, solid-state backplane that uses electronic jumpering of the IACK and BUS GRANT signal lines. Full differential distribution of the CLK10 signals provide a clean timing source for the instrument. 1–2 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 26: Characteristics Tables

    Rating: 6.3 A/250 V Inrush Surge Current 70 A maximum Steady State Input Current 16.5 A RMS maximum at 90 VAC 6.3 Amps RMS maximum at 207 VAC Power Factor Correction 1–3 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 27: Table 1-2: Secondary Power

    Slot Activation Installing a module activates the cooling for the corresponding occupied slots by opening the air flow shutter mechanism. 1–4 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 28: Table 1-4: Certifications And Compliances

    (derates relative humidity to ~55% @ 50°C). Altitude Operating To 9,144 ft. (3,000 m) (derated 1° C/1000 ft. (305m) above 5000 ft. (1524m) altitude) Nonoperating 39,376 ft. (12,000 m) 1–5 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 29: Table 1-6: Mechanical

    3 LA modules (TLA 7N4, TLA 7P2, and TLA 7P4) and 2 DSO’s (TLA 7D1 and TLA 7E1), and all module standard accessories (probes, clips) Rackmount kit adder 20 lbs (9.07 kg) Module Size 13 plug-in slots 1–6 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 30: Figure 1-1: Front And Side View Of The Benchtop Chassis

    Benchtop Chassis Specifications 16.7 in 26.5 in (42.55 cm) (69.99 cm) 13.65 in (35.00 cm) 13.25 in (33.6 cm) Figure 1–1: Front and side view of the benchtop chassis 1–7 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 31 Benchtop Chassis Specifications 1–8 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 32: Expansion Chassis Specifications

    Baffles balance the airflow from the front to back and across occupied slots in the chassis. 1–9 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 33: Characteristics Tables

    Rating: 6.3 A/250 V Inrush Surge Current 70 A maximum Steady State Input Current 16.5 A RMS maximum at 90 VAC 6.3 Amps RMS maximum at 207 VAC Power Factor Correction 1–10 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 34: Table 1-8: Secondary Power

    Meets intent of Directive 89/336/EEC for Electromagnetic Compatibility when used with the TLA 720 Benchtop Chassis. Refer to the EMC published for the TLA 720 Benchtop Chassis. Australia/New Zealand Declaration Complies with EMC provision of Radiocommunications Act when used with the of Conformity –...

  • Page 35: Table 1-11: Environmental

    –20° C to 60° C, 15° C/hr max gradient, non-condensing Relative Humidity Operating 20% to 80% relative humidity, non-condensing. Max wet bulb temperature: +29°C (derates relative humidity to approximately 22% @ 50°C). 1–12 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 36: Table 1-12: Mechanical

    3 LA modules (TLA 7N4, TLA 7P2, and TLA 7P4) and 2 DSO’s (TLA 7D1 and TLA 7E1), and all module standard accessories (probes, clips) Rackmount kit adder 20 lbs (9.07 kg) Module Size 13 plug-in slots 1–13 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 37: Figure 1-2: Front And Side View Of The Expansion Chassis

    Expansion Chassis Specifications 16.7 in 26.5 in (42.55 cm) (69.99 cm) 13.65 in (35.00 cm) 13.25 in (33.6 cm) Figure 1–2: Front and side view of the expansion chassis 1–14 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 38: Operating Information

    Operating Information...

  • Page 40: Figure 2-1: Front View Of The Benchtop Chassis With A

    Slots 0, 1 and 2 are reserved for the three slot-wide controller, all other slots are available for any other TLA 700 Series module. Figure 2–1: Front view of the benchtop chassis with a benchtop controller 2–1 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 41: Figure 2-2: Front View Of The Expansion Chassis

    Figure 2–2: Front view of the expansion chassis (with out expansion module) 25-Pin PASSIVE MONITOR connector Fan speed switch Fuse AC Power Figure 2–3: Rear view of the benchtop chassis 2–2 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 42 9-pin RS-232 serial port, logical address switches, a jumper for slot-1 or slot-12 MODID selection, an auxiliary power connection, a slot for adding programming FLASH jumper, and status lights. Refer to Figure 2–4. 2–3 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 43: Figure 2-4: Rear View Of The Enhanced Monitor

    +5 V standby voltage from the monitor backup power supply connector or from the 25-pin connector. For additional information on the enhanced monitor board jumpers, refer to the Enhanced Monitor Board Jumpers section on page 4–23. 2–4 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 44: Selecting The Correct Power Cord And Fuse

    For card cage loads in the nonshaded region of Figure 2–5, use the power cord with the 15 A plug (Tektronix part number 161-0213-XX) or the power cord with the 20 A plug (Tektronix part number 161-0218-XX). For high card cage loads combined with low input line voltages (shaded region), use only the power cord with the 20 A plug.
  • Page 45 Operating Information 2–6 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 46: Reference

    SYSRESET* and ACFAIL* signals. Figure 2–6 shows the location of the Passive Monitor Connector. Table 2–1 lists the pin out of the Passive Monitor Connector and its function. 2–7 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 47: Figure 2-6: Passive Monitor Connector

    Reference Pin 1 Pin 25 Figure 2–6: Passive monitor connector 2–8 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 48: Table 2-1: Passive Monitor Connector Pinouts

    To monitor, only use a probe with greater than 1 MW impedance. –5.2 VM –5.2 V for voltage monitoring To monitor, only use a probe with greater than 1 MW impedance. Logic Ground Logic Ground Logic Ground Logic Ground 2–9 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 49 If you tie multiple mainframes together, each mainframe must be polled to determine the source of the service request. 2–10 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 50: Enhanced Monitor Rs-232 Connector

    RS-232 host. Figure 2–7 shows the pinouts of the 9-pin RS-232 connector; Table 2–2 describes the pin assignments. Pin 1 Pin 9 Figure 2–7: RS-232 connector pinout 2–11 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 51: Backplane Connectors

    Table 2–3 shows the P1 connector pinouts for all slots in themainframe. Table 2–4 shows the P2 connector pinouts for slots 1 to 12 and Table 2–5 shows the pinouts for the Slot 0 P2 connector. 2–12 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 52: Table 2-3: P1 Connector Pinouts

    BR2* BR3* DTACK* IACK* IACKIN* SERCLK IACKOUT* SERDAT* IRQ7* IRQ6* IRQ5* IRQ4* IRQ3* IRQ2* IRQ1* –12 V +5 V STDBY +12 V +5 V +5 V +5 V 2–13 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 53: Table 2-4: P2 Connector Pinouts For Slots

    –5.2 V –5.2 V LBUSA10 LBUSC10 LBUSA11 LBUSC11 TTLTRG0* TTLTRG1* TTLTRG2* TTLTRG3* +5 V TTLTRG4* TTLTRG5* TTLTRG6* TTLTRG7* RSV2 RSV3 MODID +24 V SUMBUS +5 V –24 V 2–14 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 54: Table 2-5: P2 Connector Pinouts For Slot 0

    –5.2 V –5.2 V MODID02 LBUSC10 MODID01 LBUSC11 TTLTRG0* TTLTRG1* TTLTRG2* TTLTRG3* +5 V TTLTRG4* TTLTRG5* TTLTRG6* TTLTRG7* RSV2 RSV3 MODID00 +24 V SUMBUS +5 V –24 V 2–15 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 55: Enhanced Monitor

    FAIL:+12V@XX.XX FAIL:+5V@X.XX FAIL:+5V STBY@XX.XX FAIL:+5V EXT@XX.XX FAIL:–2V@X.XX FAIL:–5.2V@X.XX FAIL:–12V@XX.XX FAIL:–24V@XX.XX Power Supply Current Average FAIL:+24I@XX.XXA Messages FAIL:+12I@XX.XXA FAIL:+5I@XX.XXA FAIL:–2I@XX.XXA FAIL:–5.2I@XX.XXA FAIL:–12I@XX.XXA FAIL:–24I@XX.XXA Power Supply message FAIL: Total W@XX.XW 2–16 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 56 +5V External:X.XXV –2 Volts:X.XXV –5.2 Volts:X.XXV –12 Volts:XX.XXV –24 Volts:XX.XXV Power Supply Current Amperage +24V Amps:XX.XXA Messages +12V Amps:XX.XXA +5V Amps:XX.XXA –2V Amps:XX.XXA –5.2V Amps:XX.XXA –12V Amps:XX.XXA –24V Amps:XX.XXA 2–17 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 57 Pressing the PREV or NEXT will cycle through the values, while pressing both buttons simultaneously moves the cursor to the next field. 2–18 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 58: Syntax

    Any instruction that you send to an instrument that complies with SCPI must have at least three basic elements: H Command header H Parameter (if required) H Message terminator or separator 2–19 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 59: Figure 2-8: Tree Hierarchy

    < > symbols enclose the parameter type when stating the syntax of the com- mand. For example, the syntax of the command in Figure 2–10 includes the <NRf> parameter type. :STATus:OPERation:ENABle <NRf> Parameter Type Space Figure 2–10: Command header with parameter 2–20 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 60: Table 2-7: Parameter Types For Syntax Descriptions

    “or.” For example, values for the parameter <Boolean> are {0|1|OFF|ON} This is the same thing as saying “0 or 1 or OFF or ON.” Any single value is a valid parameter. 2–21 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 61 Last data byte with the END bit in the Byte Available command asserted. A semicolon separates one command from another when the commands appear on the same line. See Entering Commands. 2–22 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 62: Entering Commands

    When you concatenate queries, the mainframe combines the responses into a single response message. For example: Querying both the standard event status register and the error/event queue in the same program message. STATus:OPERation?;:SYSTem:ERRor? 2–23 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 63 You can combine commands and queries into the same message. Note, for example, the following combination which sets the temperature limit and queries to verify the setting status:questionable:temperature:limit AMBient,25;limit? AMBient 2–24 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 64: Command Groups

    Sets or queries the contents of the power enable register. :LEVel? Returns the wattage used by the mainframe. :LIMit[?] Set or query the maximum amount of power allowed before generating an alarm. 2–25 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 65 Error/Event queue. :ALL Presets the Error/Event queue enable to –1999:1000. :SCONdition? Returns a summary condition of all monitors. :S2CONdition? Returns the overflow summary information of the condition registers. 2–26 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 66: System Commands

    Configures RS-232 port parameters to default values. :RAW Configures the RS-232 port parameters for use with a computer. :TERMinal Configures the RS-232 port parameters for use with a terminal. 2–27 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 67 Queries the number of times the mainframe power has been cycled. :SOURce? Queries the power source of the enhanced monitor. :SYSReset[?] Sets or queries whether the VXI SYSRESET signal can reset the enhanced monitor. 2–28 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 68: Test Commands

    Returns the failure code for the last self-test command that was executed. :VERBose? Returns a failure code as a string describing the last executed self-test command and the test results. 2–29 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 69 Not Used Not Used Not Used Not Used Not Used Not Used Not Used Not Used Not Used Not Used Reset Value Not Applicable Errors and Events None 2–30 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 70 Command Groups Dependencies Reading the register clears it. STAT:QUES:BLOW? Examples Query: Response: 0 Related Commands STATus:QUEStionable:BLOWer:CONDition? STATus:QUEStionable:BLOWer:ENABle 2–31 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 71 STATus:QUEStionable:BLOWer:CONDition? Syntax Parameters Parameter Query response Not applicable <NR1> Reset Value Not Applicable Errors and Events None Dependencies None STAT:QUES:BLOW:COND? Examples Query: Response: 0 Related Commands STATus:QUEStionable:BLOWer? STATus:QUEStionable:BLOWer:ENABle 2–32 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 72 –222, “Data Out of Range” You attempted to set the enable register to an illegal value. Dependencies None Command: STAT:QUES:BLOW:ENAB #H0000 Examples STAT:QUES:BLOW:ENAB? Query: Response: 0 Related Commands STATus:QUEStionable:BLOWer? STATus:QUEStionable:BLOWer:CONDition? STATus:PRESet 2–33 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 73 Errors and Events –224, “Illegal Parameter Value” You attempted to use an invalid parameter value. Dependencies None STAT:QUES:BLOW:SPE? BLOW1 Examples Query: Response: 1200 Related Commands STATus:QUEStionable:BLOWer? STATus:QUEStionable:BLOWer:CONDition? STATus:QUEStionable:BLOWer:ENABle 2–34 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 74 STATus:QUEStionable:CONDition? Syntax Parameters Parameter Query response Not Applicable <NR1> Reset Value Not Applicable Errors and Events None Dependencies None STAT:QUES:COND? Examples Query: Response: 0 Related Commands STATus:QUEStionable? STATus:QUEStionable:ENABle 2–35 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 75 Not Used Not Used Not Used Not Used Not Used Not Used Not Used Reset Value Not Applicable Errors and Events None Dependencies Reading the register clears it. 2–36 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 76 Command Groups STAT:QUES:CURR? Examples Query: Response: 0 Related Commands STATus:QUEStionable:CURRent:CONDition? STATus:QUEStionable:CURRent:ENABle 2–37 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 77 Not Applicable Errors and Events –224, “Illegal Parameter Value” You attempted to use an illegal parameter value. Dependencies None STAT:QUES:CURR:CMAX? P12 Examples Query: Response: 5.1 Related Commands STATus:QUEStionable:CURRent:LEVel? STATus:QUEStionable:CURRent:MAXimum? 2–38 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 78 There is no command associated with this query. STATus:QUEStionable:CURRent:CONDition? Syntax Parameters Parameter Query response Not Applicable <NR1> Reset Value Not Applicable Errors and Events None Dependencies None Query: STAT:QUES:CURR:COND? Examples Response:0 Related Commands STATus:QUEStionable:CURRent? STATus:QUEStionable:CURRent:ENABle 2–39 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 79 –222, “Data Out of Range” You attempted to set the enable register to an illegal value. Dependencies None Command: STAT:QUES:CURR:ENAB #H3FFF Examples STAT:QUES:CURR:ENAB? Query: Response: 16383 Related Commands STATus:QUEStionable:CURRent? STATus:QUEStionable:CURRent:CONDition? STATus:PRESet 2–40 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 80 Errors and Events –224, “Illegal Parameter Value” You attempted to use an illegal parameter value. Dependencies None STAT:QUES:CURR:LEV? P5 Examples Query: Response: 5.11 Related Commands STATus:QUEStionable:CURRent? STATus:QUEStionable:CURRent:CONDition? STATus:QUEStionable:CURRent:ENABle 2–41 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 81 –222, “Data Out of Range” You attempted to set the current limit to an illegal value. Dependencies None STAT:QUES:CURR:LIM? P24 Examples Query: Response: 12.0 Related Commands STATus:QUEStionable:CURRent? STATus:QUEStionable:CURRent:CONDition? STATus:QUEStionable:CURRent:ENABle STATus:QUEStionable:CURRent:LEVel? 2–42 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 82 Not Applicable Errors and Events –224, “Illegal Parameter Value” You attempted to use an illegal parameter value. Dependencies None STAT:QUES:CURR:MAX? P12 Examples Query: Response: 7.1 Related Commands STATus:QUEStionable:CURRent:LEVel? STATus:QUEStionable:CURRent:CMAXimum? 2–43 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 83 Total Power occurred Not Used Not Used Not Used Not Used Not Used Not Used Reset Value Not Applicable Errors and Events None Dependencies Reading the register clears it. 2–44 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 84 Command Groups STAT:QUES:POW? Examples Query: Response: 0 Related Commands STATus:QUEStionable:POWer:CONDition? STATus:QUEStionable:POWer:ENABle 2–45 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 85 Syntax Parameters <Power supply> Query response Not Applicable <NR2> Reset Value Not Applicable Errors and Events None Dependencies None STAT:QUES:POW:CMAX? Examples Query: Response: 824.5 Related Commands STATus:QUEStionable:POWer:LEVel? STATus:QUEStionable:POWer:MAXimum? 2–46 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 86 There is no command associated with this query. STATus:QUEStionable:POWer:CONDition? Syntax Parameters Parameter Query response Not Applicable <NR1> Reset Value Not Applicable Errors and Events None Dependencies None Query: STAT:QUES:POW:COND? Examples Response:0 Related Commands STATus:QUEStionable:POWer? STATus:QUEStionable:POWer:ENABle 2–47 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 87 –222, “Data Out of Range” You attempted to set the enable register to an illegal value. Dependencies None Command: STAT:QUES:POW:ENAB #H3FFF Examples STAT:QUES:POW:ENAB? Query: Response: 512 Related Commands STATus:QUEStionable:POWer? STATus:QUEStionable:POWer:CONDition? STATus:PRESet 2–48 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 88 Parameters <Power Supply> Query response Not Applicable <NR2> Reset Value Not Applicable Errors and Events None Dependencies None STAT:QUES:POW:LEV? Examples Query: Response: 812.3 Related Commands STATus:QUEStionable:POWer? STATus:QUEStionable:POWer:CONDition? STATus:QUEStionable:POWer:ENABle 2–49 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 89 –222, “Data Out of Range” You attempted to set the power limit to an illegal value. Dependencies None STAT:QUES:POW:LIM? Examples Query: Response: 675.0 Related Commands STATus:QUEStionable:POWer? STATus:QUEStionable:POWer:CONDition? STATus:QUEStionable:POWer:ENABle STATus:QUEStionable:POWer:LEVel? 2–50 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 90 Syntax Parameters <Power supply> Query response Not Applicable <NR2> Reset Value Not Applicable Errors and Events None Dependencies None STAT:QUES:POW:MAX? Examples Query: Response: 876.3 Related Commands STATus:QUEStionable:POWer:LEVel? STATus:QUEStionable:POWer:CMAXimum? 2–51 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 91 Slot 9 Delta Temperature Slot 10 Delta Temperature Slot 11 Delta Temperature Slot 12 Delta Temperature Ambient Temperature Not Used Not Used Reset Value Not Applicable Errors and Events None 2–52 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 92 Command Groups Dependencies Reading the register clears it. STAT:QUES:TEMP? Examples Query: Response: 1 Related Commands STATus:QUEStionable:TEMPerature:CONDition? STATus:QUEStionable:TEMPerature:ENABle 2–53 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 93 Not Applicable Errors and Events –224, “Illegal Parameter Value” You attempted to use an illegal parameter value. Dependencies None STAT:QUES:TEMP:CMAX? DELTA12 Examples Query: Response: 50 Related Commands STATus:QUEStionable:TEMPerature:LEVel? STATus:QUEStionable:TEMPerature:MAXimum? 2–54 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 94 STATus:QUEStionable:TEMPerature:CONDition? Syntax Parameters Parameter Query response Not Applicable <NR1> Reset Value Not Applicable Errors and Events None Dependencies None STAT:QUES:TEMP:COND? Examples Query: Response: 0 Related Commands STATus:QUEStionable:TEMPerature? STATus:QUEStionable:TEMPerature:ENABle 2–55 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 95 –222, “Data Out of Range” You attempted to set the enable register to an illegal value. Dependencies None Command: STAT:QUES:TEMP:ENAB #H7FFF Examples STAT:QUES:TEMP:ENAB? Query: Response: 32767 Related Commands STATus:QUEStionable:TEMPerature? STATus:QUEStionable:TEMPerature:CONDition? STATus:PRESet 2–56 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 96 Errors and Events –224, “Illegal Parameter Value” You attempted to use an illegal parameter value. Dependencies None STAT:QUES:TEMP:LEV? OUT0 Examples Query: Response: 24 Related Commands STATus:QUEStionable:TEMPerature? STATus:QUEStionable:TEMPerature:CONDition? STATus:QUEStionable:TEMPerature:ENABle 2–57 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 97 –222, “Data Out of Range” You attempted to set the temperature limit to an illegal value. Dependencies None STAT:QUES:TEMP:LIM? AMB Examples Query: Response: 32 Related Commands STATus:QUEStionable:TEMPerature? STATus:QUEStionable:TEMPerature:CONDition? STATus:QUEStionable:TEMPerature:ENABle STATus:QUEStionable:TEMPerature:LEVel? 2–58 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 98 Not Applicable Errors and Events –224, “Illegal Parameter Value” You attempted to use an illegal parameter value. Dependencies None STAT:QUES:TEMP:MAX? AMB Examples Query: Response: 32 Related Commands STATus:QUEStionable:TEMPerature:LEVel? STATus:QUEStionable:TEMPerature:CMAXimum? 2–59 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 99 –5.2 V –12 V –24 V Not Used Not Used Not Used Not Used Not Used Not Used Not Used Reset Value Not Applicable Errors and Events None 2–60 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 100 Command Groups Dependencies Reading the register clears it. STAT:QUES:VOLT? Examples Query: Response: 0 Related Commands STATus:QUEStionable:VOLTage:CONDition? STATus:QUEStionable:VOLTage:ENABle 2–61 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 101 STATus:QUEStionable:VOLTage:CONDition? Syntax Parameters Parameter Query response Not Applicable <NR1> Reset Value Not Applicable Errors and Events None Dependencies None STAT:QUES:VOLT:COND? Examples Query: Response: 0 Related Commands STATus:QUEStionable:VOLTage? STATus:QUEStionable:VOLTage:ENABle 2–62 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 102 –222, “Data Out of Range” You attempted to set the enable register to an illegal value. Dependencies None Command: STAT:QUES:VOLT:ENAB #H3FFF Examples STAT:QUES:VOLT:ENAB? Query: Response: 16383 Related Commands STATus:QUEStionable:VOLTage? STATus:QUEStionable:VOLTage:CONDition? STATus:PRESet 2–63 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 103 Errors and Events –224, “Illegal Parameter Value” You attempted to use an illegal parameter value. Dependencies None STAT:QUES:VOLT:LEV? P24 Examples Query: Response: 24.01 Related Commands STATus:QUEStionable:VOLTage? STATus:QUEStionable:VOLTage:CONDition? STATus:QUEStionable:VOLTage:ENABle 2–64 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 104 –222, “Data Out of Range” You attempted to set the transition filter to an illegal value. Dependencies None Command: STAT:QUES:VOLT:PTR #H7FF7 Examples STAT:QUES:VOLT:PTR? Query: Response: 32759 Related Commands STATus:QUEStionable:VOLTage:CONDition? 2–65 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 105 Command Groups 2–66 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 106: Test Subsystem

    H Fan Speed Control test. This test varies the fan speed control and verifies that the fan speed changes accordingly. H ADC and DAC Control test. This test verifies the internal ADC and DAC circuitry. 2–67 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 107: Test

    Not Applicable <NR1> 1000 ≤ N ≤ 1999 Reset Value Not Applicable Errors and Events None Dependencies None Command: TEST Examples TEST? Query: Response: 0 Related Commands TEST:RESults? TEST:RESults:VERBose? 2–68 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 108: Test:number

    1000 ≤ N ≤ 1999 Reset Value Not Applicable Errors and Events None Dependencies None Command: TEST:NUMB 1000 Examples TEST:NUMB? 1000 Query: Response: 0 Related Commands TEST:RESults? TEST:RESults:VERBose? 2–69 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 109: Test:results

    Query response Not Applicable <NR1> 1000 ≤ N ≤ 1999 Reset Value Not Applicable Errors and Events None Dependencies None TEST:RES? Examples Query: Response: 0 Related Commands TEST TEST:RESults:VERBose? 2–70 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 110: Test:results:verbose

    1000 ≤ N ≤ 1999 verbose message: (error specific) Reset Value Not Applicable Errors and Events None Dependencies None TEST:RES:VERB? Examples Query: Response: 1001,Test ADC and DAC failed" Related Commands TEST TEST:RESults? 2–71 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 111 TEST Subsystem 2–72 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 112: Ieee 488.2 Common Commands

    *STB? Returns the contents of the Status Byte Register. *TST? Initiates an internal self test and returns a failure code. *WAI? Synchronizes command execution with the system controller. 2–73 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 113: Cls

    There is no query associated with this command. SCPI and IEEE 488.2 enable registers are not cleared by this command. *CLS Syntax Parameters None Reset Value Not Applicable Errors and Events None Dependencies None Command: *CLS Examples Related Commands STATus:PRESet 2–74 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 114: Ese

    –222, “Data Out of Range” You attempted to set the enable mask to an illegal value. Dependencies None Command: *ESE #H40 Examples *ESE? Query: Response: 64 Related Commands *ESR? 2–75 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 115: Esr

    Command Error Not Used Power On Reset Value Not Applicable Errors and Events None Dependencies Reading this register clears it. *ESR? Examples Query: Response: 0 Related Commands *ESE 2–76 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 116: Idn

    Manufacturer, Model Number, Serial Number, Firmware Version (or Equivalent) Reset Value Not Applicable Errors and Events None Dependencies None *IDN? Examples Query: Response: TEKTRONIX,VX1420A,B123456,SCPI:95.0 RM1:1.0 RM2:1.0 Related Commands None 2–77 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 117: Opc

    *OPC Syntax *OPC? Parameters None Reset Value Not Applicable Errors and Events None Dependencies None Command: *OPC Examples *OPC? Query: Response: 1 Related Commands *WAI 2–78 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 118: Psc

    Errors and Events –224, “Illegal Parameter Value” You attempted to set the parameter to an illegal value. Dependencies None Command: *PSC 0 Examples *PSC? Query: Response: 0 Related Commands STATus 2–79 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 119: Rst

    The VXI Monitor stops execution while other monitors remain active. *RST Syntax Parameters None Reset Value Not Applicable Errors and Events None Dependencies None Command: *RST Examples Related Commands STATus:PRESet *CLS 2–80 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 120: Sre

    ESB Standard Event Status Reg Not Defined Operation Event Register Reset Value Not Applicable Errors and Events None Dependencies None Command: *SRE #H60 Examples *SRE? Query: Response: 96 Related Commands *STB? 2–81 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 121: Stb

    Questionable Event Register ESB Standard Event Status Reg RQS/MSS Operation Event Register Reset Value Not Applicable Errors and Events None Dependencies None *STB? Examples Query: Response: 96 Related Commands *SRE 2–82 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 122: Tst

    Not Applicable <NR1> 0 | 1000 ≤ N ≤ 1999 Reset Value Not Applicable Errors and Events None Dependencies None *TST? Examples Query: Response: 0 Related Commands TEST TEST:RESults:VERBose? 2–83 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 123: Wai

    *WAI prevents the instrument from executing further commands until the previous command has completed execution. *WAI Syntax Parameters None Reset Value Not Applicable Errors and Events None Dependencies None Command: *WAI Examples Related Commands *OPC 2–84 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 124: Theory Of Operation

    Theory of Operation...

  • Page 126: Benchtop Chassis

    A 34-wide ribbon cable at 0J4 on the backplane connects to J16 on the tempera- ture sense board. Connectors 0J1, 0J2, and 0P3 carry instrument monitoring information from the backplane to the enhanced monitor board. 3–1 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 127 The temperature sense board (A2) monitors the temperatures for each slot within the chassis. The temperature sense board connects to the backplane through the ribbon cable at J16. 3–2 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 128: Maintenance

    Maintenance...

  • Page 130: Preparation

    6. Do not slide the circuit boards over any surface. 7. Avoid handling circuit boards in areas that have a floor or work-surface covering capable of generating a static charge. 4–1 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 131: Inspection And Cleaning

    Do not use chemical cleaning agents; they may damage the chassis. Avoid chemicals that contain benzene, toluene, xylene, acetone, or similar solvents. 4–2 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 132: Removal And Installation Procedures

    The following tools are needed to disassemble the Benchtop Mainframe: H Flat blade screwdriver H Phillips screwdriver H Screwdriver with a T-15 Torx tip H Screwdriver with a T-20 Torx tip H 3/32 Allen wrench 4–3 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 133: Install Empty Slot Panel Fillers

    Refer to Figure 4–1 for information on installing the slot fillers. CAUTION. To avoid damage caused by heat use only Tektronix front panels; otherwise, the shutters may activate, effectively robbing airflow from installed modules. Installing the fillers provides improved cooling for installed modules, improved EMI shielding, and more accurate air temperature sensing to control the fan speeds.

  • Page 134: Module Removal And Replacement

    6. Remove the four screws that hold the blower to the chassis part of the blower assembly. 7. For convenience, replace the two screws from step 5 onto the top of the blower. 4–5 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 135: Figure 4-2: Location Of Blower Assembly Screws

    Figure 4–2: Location of blower assembly screws NOTE. When reconnecting the blower cables to the chassis, verify that you connect the blower cable to J8, 1/BLOWER. 4–6 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 136: Figure 4-3: Removing The Blower Assembly

    Blower assembly Figure 4–3: Removing the blower assembly Chassis Blower assembly Shroud Screws (2) Blower Cable tie Screws (4) Screws (4) Screws (6) Figure 4–4: Removing the blower 4–7 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 137: Removing The Enhanced Monitor Board

    1. Unscrew the two captive screws that attach the monitor board to the chassis. 2. Slide the board out of the chassis. Monitor board Figure 4–5: Removing the enhanced monitor board 4–8 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 138: Removing The Power Supply

    Perform the Removing the Enhanced Monitor Board procedure on page 4–8. Remove the power supply by pulling the power supply handle to the right. Mainframe Power supply Handle Figure 4–6: Removing the power supply 4–9 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 139: Removing The Mainframe Cover

    4. After tilting the cover up about 3 inches, lift the cover straight off the instrument. Remove screws (20) Step 1 Step 2 Step 3 Figure 4–7: Removing the mainframe cover 4–10 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 140: Removing The Card Guides

    These guides are not intended to be disassembled. To replace a card guide, slide the card guide towards the rear of the chassis and allow the front of the card guide to snap into place. 4–11 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 141: Figure 4-8: Removing The Top And Bottom Card Guides

    Front Rear Removing card guides Gently pull the card guide forward until it pops out of place. Figure 4–8: Removing the top and bottom card guides 4–12 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 142: Removing The Nut Rails

    4. Replace the nut rail by sliding it back in the side of the chassis and pushing it into place. Remove module retaining screws. Bottom nut rail Top nut rail Figure 4–9: Replacing the top and bottom nut rails 4–13 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 143: Removing The Temperature Sense Board

    Lift the board out of the holes at the top of the chassis being careful not to damage any components on the circuit board. Temperature sense board Retainer Cable Figure 4–10: Removing the temperature sense board 4–14 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 144: Removing The Emi Din Shields

    3. Remove EMI DIN shield from the backplane. Install the EMI DIN shield by reversing the disassembly procedure. Polarization hole Screws (2) Backplane EMI DIN shield Figure 4–11: Removing the backplane EMI DIN shields 4–15 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 145: Removing The Backplane

    5. After removing all of the screws from the backplane, remove the backplane from the chassis by sliding it out of the right side. Install the backplane by reversing the disassembly procedure. 4–16 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 146: Figure 4-12: Removing The Backplane

    Removal and Installation Procedures Power switch connector Connector 6-32 Screws (17) Figure 4–12: Removing the backplane 4–17 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 147: Special Configuration Options

    On/Standby switch cable at J22 and connect it to J23. Replace the chassis cover. Connect the momentary switch to pins 5 and 18 (return side) of the 25-pin rear panel connector. 4–18 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 148: Figure 4-13: Power Switch Connectors

    Removal and Installation Procedures Power switch connector Backplane Figure 4–13: Power switch connectors 4–19 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 149 Removal and Installation Procedures 4–20 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 150: Jumper Settings

    The backplane jumper is located on the backplane at position JP2. Jumper pins 2 through 5 on JP2 as shown in Figure 4–14. Table 4–1 lists the jumper positions for the TLA 720 Benchtop Chassis and the TLA 7XM Expansion Chassis.

  • Page 151: Figure 4-14: Soft Power Down Jumper Setting

    Jumper Settings Figure 4–14: Soft power down jumper setting 4–22 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 152: Enhanced Monitor Board Jumpers

    (+5 V external power supply). The enhanced monitor can answer to the slot 1 or slot 12 MODID line for the configuration manager. The default position is slot 12. 4–23 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 153: Enhanced Monitor Board Flash Jumper

    In order to flash the enhanced monitor board with the latest firmware, you need to install a firmware loader jumper at the location shown in Figure 4–16. MOD ID jumper Flash Jumper Figure 4–16: Enhanced monitor board flash jumper 4–24 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 154: Enhanced Monitor Board Logical Address Switch Settings

    “dynamically” configure the module’s logical address. If a module is set to a logical address other than FF, you must be careful to choose a unique address. Figure 4–17: Logical address switches 4–25 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 155 Jumper Settings 4–26 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 156: Hardware Troubleshooting

    (See Strategy for Servicing on page xv.) Fault isolation is supported for the following replaceable parts: H Blower H Enhanced monitor board H Power-supply H Backplane H Fuses, cables, and other parts 4–27 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 157: Check For Common Problems

    Controller does not power on with front panel H Chassis not configured properly: consult manufacturer or product literature for information H Module failure: contact local Tektronix service center 4–28 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 158: Troubleshoot The Benchtop Chassis

    NOTE. Before replacing circuit boards, be sure to inspect all associated cables and connectors for damage and proper installation. +5VM +12VM –12VM +24VM –24VM –5.2VM –2VM +5VC +12VC +5VB +5VB Figure 4–18: Rear-panel connector diagram 4–29 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 159: Overview Of Procedures

    After board replacement Verifies advertised performance TLA 700 Series Performance specifications Verification and Adjustment Technical Reference Manual Troubleshooting When unit fails to work correctly Troubleshoot the Benchtop Chassis, page 4–29 4–30 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 160: Figure 4-19: Primary Troubleshooting Procedure

    Check for failure at Supply power supply, voltages OK? backplane board (Fig. 4–18) (blown fuse or bad board) Power off mainframe. Mainframe OK. Figure 4–19: Primary troubleshooting procedure 4–31 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 161 H Isolate the problem to either the chassis or to one of the installed modules. Remove the modules from the chassis and check that the problem still exists. H Run the mainframe diagnostic tests. 4–32 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 162 H The blower may not be operating properly. H Verify that all of the empty slots within the chassis are closed when no modules are installed. If necessary replace the faulty shutter assembly. 4–33 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 163 Hardware Troubleshooting 4–34 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 164: Mainframe Troubleshooting

    Examine the connectors for bent or missing pins. Reconnect the two blue expansion cables and the gray expansion cable, and tighten the two connector screws. power-on the mainframes and try again. 4–35 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 165: Software Problems

    You can also run the external TLA 700 Mainframe diagnostics to identify problems not covered by other diagnostics. The TLA 700 Mainframe diagnostics are located under the Start menu under the Tektronix TLA 700 programs. 4–36 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 166: Table 4-5: Failure Symptoms And Possible Causes

    Expansion mainframe failure: contact your local Tektronix service center. Monitor does not power-on Check the monitor power cord connection. Check for failed fuse. Monitor failure: contact the vendor of your monitor for corrective action. 4–37 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 167 If mainframe is a benchtop mainframe, check the status of the SYSTEM FAIL and TEST LEDs on the benchtop controller. If either LED stays on, contact your local Tektronix service center. Check the status of the READY and ACCESSED LEDs on the front panel of the application modules.
  • Page 168 Module address switches not set correctly. Power off mainframe and remove module. Set address switches to FF and reinstall module. Module failure; replace with known-good module or contact your local Tektronix service center. Mainframe failure; contact your local Tektronix service center.
  • Page 169 After completing all of the above tasks (if you have performed the TLA 700 Final Setup), the logic analyzer starts the TLA 700 application which performs the following tasks: H Power-on diagnostics on all installed modules. 4–40 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 170 Start resource manager Module power-on diagnostics System controller TLA 700 system power-on diagnostics tests Records failures in Calibration and Diagnostic property sheet Ready Figure 4–21: TLA 700 startup sequence 4–41 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

  • Page 171: Table 4-6: Command Line Options For Resman32

    +t, +T ResMan32 will not display the text window and the tests will terminate after executing regardless of the error conditions. +m, +M ResMan32 displays in a minimized window. 4–42 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 172 **Responses are unsupported by this device Begin Normal Operation slot 1, LA 1, started successfully slot 3, LA 2, started successfully VISA Data la_1=1,1,4093,2036,2,0,1,7,2097152 la_2=2,3,4093,2033,2,0,1,7,2162688 Figure 4–22: ResMan32 program output 4–43 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 173 The single-wide expansion module requires up to 60 lbs. of insertion force to engage it into the back plane. 4–44 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 174 If the expansion mainframe powers-on correctly, the problem can be isolated to either the expansion module(s) or the expansion cable(s). 4–45 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 175 Mainframe Troubleshooting 4–46 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 176 H Type and serial number of the instrument. H Reason for returning. H A complete description of the service required. Mark the address of the Tektronix Service Center and the return address on the shipping carton in two prominent locations. 4–47...
  • Page 177 Repackaging Instructions 4–48 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 178 Options...
  • Page 180 And these options can be converted from service at Tektronix service depots to service on-site (see Option S1 and S3), which helps keep downtime to a minimum.

  • Page 181: Table 5-1: Options

    Options Tektronix Service Options are available at the time you order your instrument. Contact your local Tektronix Sales Office for more information. Table 5–1: Options Option # Label Description Universal European 220 V, 50 Hz, 16A power cord power cord...
  • Page 182 Diagrams...

  • Page 184: Benchtop Controller

    Display and I/O Adapter Board Floppy disk drive Benchtop Chassis Module Slot #2 Module Slot #3 Module Slot #12 Power Supply Enhanced Monitor Blower Figure 6–1: Interconnection block diagram 6–1 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 185 Slot 2 Slot 3 Slot 4 Slot 5 Slot 6 Slot 7 Slot 8 Slot 9 Slot 10 Slot 11 Slot 12 Switch Figure 6–2: Benchtop chassis block diagram 6–2 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 186 Replaceable Mechanical Parts...
  • Page 188 (for flashing module firmware) TLA 700 Series, Version 3.1, User Manual 071–0684–XX Tek mouse pad 016–1524–XX Cap, fuse holder 200–4326–00 Fuse, 15A 159–0256–00 Fuse, 6.3A 159–0381–00 Fuse, 20A 159–0379–00 7–1 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 189 Therefore, when ordering parts, it is important to include the following information in your order. H Part number (see Part Number Revision Level below) H Instrument type or model number 7–2 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 190 670-7918-03 670-7918-XX When you order parts, Tektronix will provide you with the most current part for your product type, serial number, and modification (if applicable). At the time of your order, Tektronix will determine the part number revision level needed for your product, based on the information you provide.
  • Page 191 52152 3M COMPANY INDUSTRIAL TAPE DIVISION ST PAUL, MN 55144–1000 3M CENTER 01295 TEXAS INSTRUMENTS INC SEMICONDUCTOR GROUP DALLAS, TX 75272–5303 13500 N CENTRAL EXPRESSWAY PO BOX 655303 7–4 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 192 DES PLAINES, IL 60016–3049 80009 TEKTRONIX INC 14150 SW KARL BRAUN DR BEAVERTON, OR 97077–0001 PO BOX 500 86928 SEASTROM MFG CO INC 456 SEASTROM STREET TWIN FALLS, ID 83301 7–5 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 193 GREY, 105 DEG C, MCA–3T X BME–3S, 13A/250V, NORTH AMERICAN, – 161–0218–00 CABLE ASSY, PWR: 3, 14 AWG, 100 L, SJT, BLK, 0B445 161–0218–00 60 DEG C, 5–20P X BME–3S, 15A/125V, 7–6 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 194 Replaceable Parts Figure 7–1: Cabinet and chassis assembly 7–7 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 195 –15 337–4046–00 SHIELD, ELEC: AL, DVG1, TG2000 80009 337–4046–00 –16 334–9920–00 MARKER, IDENT: LABEL, FRONT BOTTOM SLOT, 0KB05 334–9920–00 0.010 LEXAN, 1.25 X 15.60, BACKGROUND SILVER GRAY, TLA711A 7–8 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 196 071–0268–XX SERIES LOGIC ANALYZER MODULE 070–9780–XX MANUAL, TECH: SERVICE, TLA7D1, TLA7E1 80009 070–9780–XX DIGITIZING OSCILLOSCOPE MODULE 071–0572–XX MANUAL, TECH: INSTRUCTION, TLA 7UP 80009 071–0572–XX MAINFRAME FIELD UPGRADE KIT 7–9 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 197 Replaceable Parts Figure 7–2: Circuit boards and chassis parts 7–10 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 198 Replaceable Parts 7–11 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 199 WASHER, FLAT: 0.17 ID X 0.375 OD X 0.032 STL 86928 76430–000 – 334–9921–00 MARKER, IDENT: LABEL, REAR POWER RATING, 0KB05 334–9921–00 0.010 LEXAN, 1.500 X 7.500, BACKGROUND SILVER GRAY, TLA711A 7–12 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 200 Replaceable Parts Figure 7–3: Power supply, monitor, and fan assembly 7–13 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 201 B–814–2 9.7 X 8.1 INCHES –7 351–0800–00 GUIDE, SLIDE: CHASSIS TRACK, (PAIR) 06666 CTS–124 –8 386–6999–00 PLATE, LEFT: OFFSET SPACER, 16 X 1.45, 0.062 THICK AL TK1943 386–6999–00 7–14 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 202 Replaceable Parts Figure 7–4: Rackmount assembly 7–15 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 203 Replaceable Parts 7–16 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 204 Index...
  • Page 206 Configuration, EMI, 4–15 jumper settings, 4–23 Connector removal, 4–8 backplane, 2–12–2–15 theory of operation, 3–2 enhanced monitor, 2–11 Enhanced monitor connector, 2–11 enhanced monitor pinout, 2–12 location, 2–11 Index–1 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 207 EMI DIN shields, 4–15 SRE?, 2–81 removing the temperature sense board, 4–14 status byte register, 2–82 special configuration options, 4–18 STB?, 2–82 Mainframe cover, removal, 4–10 TST?, 2–83 WAI, 2–84 Index–2 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 208 7–4 abbreviations, 7–4 part number revision level, 7–3 manufacturers cross reference, 7–4 part ordering information, 7–2 part number revision level, 7–3 using, 7–3 part ordering information, 7–2 Index–3 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 209 4–47 expansion chassis, 1–10 self service, xvi secondary power strategy for, xv benchtop chassis, 1–4 troubleshoot the benchtop chassis, 4–29 expansion chassis, 1–11 warranty repair, xvi Index–4 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 210 4–29 Strategy for servicing, xv Switches, enhanced monitor board logical address, 4–25 System Voltage status word, 2–36, 2–44, 2–60 expansion mainframe troubleshooting, 4–44 isolating problems, 4–42 Index–5 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...
  • Page 211 Index Index–6 TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual...

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