Tektronix TX-DMM TX1 User Manual
Tektronix TX-DMM TX1 User Manual

Tektronix TX-DMM TX1 User Manual

True rms digital multimeters
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Summary of Contents for Tektronix TX-DMM TX1

  • Page 1 T h e t e s t & me a s u r e me n t e q u i p me n t y o u n e e d a t t h e p r i c e y o u w a n t . A l l t e s t I n s t r u me n t s , I n c .
  • Page 2 TX-DMM TX1 and TX3 True RMS Digital Multimeters User Manual 070-9880-01 070988001...
  • Page 3 Copyright Tektronix, Inc. All rights reserved. Licensed software products are owned by Tektronix or its suppliers and are protected by United States copyright laws and international treaty provisions. Use, duplication, or disclosure by the Government is subject to restrictions as set forth in subparagraph (c)(1)(ii) of the Rights in Technical Data and Computer Software clause at DFARS 252.227-7013, or subparagraphs (c)(1)
  • 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. Customer shall be responsible for paying all shipping charges, duties, taxes, and any other charges for products returned to any other locations.
  • Page 5: Contacting Tektronix

    1-800-833–9200 6:00 a.m. – 5:00 p.m. Pacific time Or contact us by e-mail: tm_app_supp@tek.com For product support outside of North America, contact your local Tektronix distributor or sales office. Service Tektronix offers extended warranty and calibration support programs as options on many products. Contact your local Tektronix distributor or sales office.
  • Page 6: Table Of Contents

    Table of Contents General Safety Summary ......Front and Rear Panel Overview ..... . . Display Indicators .
  • Page 7 Table of Contents Button and Softkey Overview ......Blue Button ........RANGE Button .
  • Page 8: General Safety Summary

    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. To Avoid Fire or Personal Injury Connect and Disconnect Properly.
  • Page 9 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.
  • Page 10: Front And Rear Panel Overview

    Front and Rear Panel Overview FUSED 600V CATIII 1000V 15A/30 SECONDS Extra large LCD display with dual numerical readout. Measurement function knob – Use to select a measurement. Blue Button – Use to access 1ms, MEM, and Setup menu. RANGE Button – Use to set measurement range. M/M/A Button –...
  • Page 11 Front and Rear Panel Overview Press and hold options – Activate by holding down the specified button for two seconds while the meter is on. Power-up options – Activate by holding down the specified button while turning on the meter. Compliance and battery and fuse replacement information.
  • Page 12: Display Indicators

    Front and Rear Panel Overview Display Indicators Special feature indicators Upper display Low battery indicator Upper display units Delta indicator Main display Blue button and memory Main display units mode indicators Range indicators Bargraph Softkey menus TX1 and TX3 True RMS Digital Multimeters...
  • Page 13: Measurement Function Knob

    Front and Rear Panel Overview Measurement Function Knob OFF. Turns off the meter. Setup parameters and stored measurements are saved. Volts AC RMS, Volts DC, Volts AC DC dual display, Volts AC+DC total RMS, dB, and dBm. Frequency measurements. Duty factor also shows if it is turned on in the Setup menu.
  • Page 14: Input Connectors

    Front and Rear Panel Overview Input Connectors CATIII FUSED 600V 1000V 15A/30 SECONDS Input connector for current measurements up to 10 A (15 A for 30 seconds). Rating is 600 V open circuit voltage. COM. Common connector. All measurements are referenced to this connector.
  • Page 15: Operating Basics

    Operating Basics Before you take any of the measurements described in this section, follow these steps: For specified accuracy, allow the meter to stabilize for 30 seconds after you turn on the meter. Observe the safe test lead connections below when you remove the test leads from the meter.
  • Page 16: Using Procedures In This Section

    Operating Basics Using Procedures in this Section All measurements are made by first setting the measurement function knob to a function setting and then selecting a measurement from the softkeys. Note that not all knob settings have corresponding softkey settings. For example, the steps below show how to make a DC voltage measurement: 1.
  • Page 17: Voltage Measurements

    Operating Basics Voltage Measurements Main Upper Measurement Softkey Connect leads display display True RMS AC voltage (default) DC voltage –– AC DC dual display AC DC or AC+DC (press to AC DC ( ress toggle) AC+DC total RMS AC+DC TX1 and TX3 True RMS Digital Multimeters...
  • Page 18: Application: Using Ac Dc And Ac+Dc In Volts Mode

    Operating Basics Application: Using AC DC and AC+DC in Volts Mode DC = 5 V AC = 1V Frequency = 60 Hz AC voltages riding on power supplies can cause problems with electronic circuits. If you set the meter to DC Volts mode, the display shows the DC component of 5.000 V.
  • Page 19: Db And Dbm Voltage Measurements

    Operating Basics dB and dBm Voltage Measurements Main Upper Measurement Softkey Connect leads display display dB (TX3 only) dB or dBm (press to toggle) dBm (TX3 only) dB readout = 20 log (main display readout/ref), where ref = 1 V is the default. dBm readout = 10 log (main display readout /R), where R=600 .
  • Page 20: Application: Using Voltage In A Circuit As The Reference Value In Db Mode

    Operating Basics Application: Using Voltage in a Circuit as the Reference Value in dB Mode An example of using a voltage in a circuit as the reference value is measuring the AC voltage gain of an amplifier. Set the meter to dB mode and measure the voltage that you want to use for the reference (the input of the amplifier).
  • Page 21: Frequency Measurements

    Operating Basics Frequency Measurements Main Upper Measurement Softkey Connect leads display display Frequency (no selection) – EdGE Frequency and duty factor % Duty dual display Displayed when you set negative edge triggering in the Setup menu. –EdGE is active but not displayed when % duty is on. You must turn on positive or negative duty in Setup menu.
  • Page 22: Ac Vs. Dc Coupled Frequency Measurements

    Operating Basics AC vs. DC Coupled Frequency Measurements When the duty factor measurement mode is off, the frequency measurement is AC coupled; otherwise, it is DC coupled. Changing Voltage Range in Frequency Mode To change voltage range, press the RANGE button. The voltage range shows momentarily in the upper display.
  • Page 23: Resistance Measurements (Ohms, Continuity, Diode, And 50 Range)

    Operating Basics Resistance Measurements (Ohms, Continuity, Diode, and 50 Range) Main Upper Measurement Softkey Connect leads display display Resistance (default) –– Continuity OPEn or Shrt (beeps on short) Diode –– Forward bias Reverse bias –– See application below. Application: Measuring Low Resistance Values To measure low resistance values to 0.01 resolution, set the meter to 50...
  • Page 24: Capacitance Measurement

    Operating Basics Capacitance Measurement Main Upper Measurement Softkey Connect leads display display Capacitance (no selection) –– CAUTION. To avoid damaging the meter, remove all power from the circuit before connecting the test leads. Measuring large-value capacitors may take several seconds. Follow the procedures below when making capacitance measure- ments: Remove capacitors from circuitry.
  • Page 25: Temperature Measurements (Tx3 Only)

    Operating Basics Temperature Measurements (TX3 only) Main Upper Measurement Softkey Connect leads display display Celsius temperature Ambient (default) temp. C ATK01 Thermocouple Thermocouple probe adapter Fahrenheit temperature Ambient temp. F ATP01 K-Type Temperature probe Before you take a temperature measurement, momentarily change the temperature of the thermocouple to verify a shorted or open thermocouple is not incorrectly displaying the ambient temperature.
  • Page 26 Operating Basics 3. While in C or F mode, allow the temperature reading to stabilize on a value (this value should be very close to 0 C for C mode or 32.0 F for F mode). Any deviation from 0 C or 32 F represents the thermocouple’s offset.
  • Page 27: Current Measurements

    Operating Basics Current Measurements Main Upper Measurement Softkey Connect leads display display True RMS AC Amps DC Amps –– (default) Amps AC DC dual display AC DC or Current C rre Load AC DC ( ress AC+DC (press to s r e source Amps AC+DC total RMS AC+DC...
  • Page 28: Button And Softkey Overview

    Button and Softkey Overview Blue Button To access functions in blue text, press the blue button and then press a function button while the indicator is on. The indicator shows on the display for five seconds. Press and hold the blue button for two seconds to access the Setup menu.
  • Page 29: 1Ms (1 Ms Peak Hold)

    Button and Softkey Overview 1ms (1 ms Peak Hold) To activate 1 ms peak hold, first press the blue button and then the M/M/A button while the indicator shows on the display. When in 1 ms mode, the LCD displays the indicators.
  • Page 30: Auto Hold

    Button and Softkey Overview Auto Hold To activate auto hold, press down on the HOLD button until appears on the display. Auto hold is not available for capacitance or AC DC measurements. In auto hold mode the display automatically freezes and the instrument beeps when the measurement reading stabilizes.
  • Page 31: Mem (Memory)

    Button and Softkey Overview Relative to a Programmed Value. Use the measurement function knob and softkeys to set the meter to the measurement function and range you want and then press the button. While the meter is in delta mode, press and hold the blue button until the Setup menu appears. Use the softkeys to edit rEF to the desired value and press softkey 4 for OK.
  • Page 32: Softkeys

    Button and Softkey Overview RCL. Select RCL to scroll through the stored values in reverse order. The upper display momentarily shows the memory location while the main display shows the value stored in that location. CLR. Select CLR to clear the currently selected memory location. The location is replaced with “-----”.
  • Page 33 Button and Softkey Overview – Softkey Function Press to increase Press to de- Press to step to Press to save setting value. crease setting next digit in set- setting and move value. ting value. to next setup pa- rameter. The following table lists the setup menu prompts, the definition of parameters, and default values.
  • Page 34: Special Features

    Special Features High Resolution (HrES) 50,000-Count Mode By default, the meter is set to 5,000-count mode. For 50,000-count mode, press the blue button when you turn on the meter. To change the default resolution to 50,000-count mode, use the Setup menu information on page 23.
  • Page 35: Power-Up Options

    Special Features Power-Up Options To activate power-up functions, press and hold a button or softkey when you turn on the meter. Hold the button or softkey until you hear a single beep and see a text acknowledgment on the display (see Table 2 below).
  • Page 36 Special Features (Cont.) Table 2: Power-up options Button Power-up function Explanation Softkey 2 Overall Diagnostics Displays all LCD segments. Press softkey 2 again to hear the beeper. Press softkey 2 again to perform button and knob diagnostics. The display shows two two-digit numbers. The numbers on the left confirm the knob location and the numbers on the right confirm the button operation.
  • Page 37: Max/Min/Avg Operation

    Special Features MAX/MIN/AVG Operation Press the M/M/A button to start recording M/M/A values. In 5,000 count mode the M/M/A default recording rate is 4 measurements per second. Press and hold the M/M/A button when turning on the meter to apply averaging, which reduces the recording rate to 1 measure- ment per second (1 sec M/M/A).
  • Page 38: Auto Fuse Detection

    Special Features Once you set the meter to M/M/A mode, the meter will uprange, or automatically increase range setting, but will not downrange. You must exit M/M/A mode to restore downranging abilities to the meter. While in M/M/A mode, press the HOLD button to stop the recording and freeze the most recent M/M/A values.
  • Page 39: Specifications

    Specifications All specifications are warranted, unless noted as typical, for the rated temperature range of 23 C 5 C at less than 80% relative humidity. Characteristics Description LCD display digits (default) or 4 Display counts 5,000 (default) or 50,000 Bargraph 20 segment, updated 20 times per second Memory locations TX1: 10, TX3: 30...
  • Page 40 Specifications Table 4: DC voltage characteristics Characteristic Description Settling time 3 readings (typical) Reading rate 5,000 ct.: 4 readings per second 50,000 ct.: 1 reading per second Rejection ratio Common mode 120 dB at DC or 50 Hz or 60 Hz Normal mode 60 dB at 50 Hz or 60 Hz Input impedance...
  • Page 41 Specifications Table 6: AC voltage characteristics Characteristic Description Input impedance 10 M in parallel with 100 pF (typical) Settling time 4 readings (typical) Reading rate 5,000 ct.: 4 readings per second 50,000 ct.: 1 reading per second Common mode 60 dB at DC to 60 Hz rejection ratio Crest factor, maximum Full scale: 3...
  • Page 42 Specifications Table 7: AC voltage range, resolution, and accuracy Resolution Accuracy Range 5,000 counts 50,000 counts 0.5 V 40 Hz – 20 kHz: 40 Hz – 20 kHz: 100 V 10 V (0.6% + 2 counts) (0.4% + 2 counts) 1 mV 100 V 50 V...
  • Page 43 Specifications Table 8: DC current characteristics Characteristics Description Burden voltage 5 mA to 5 A: 0.3 V max. 10 A: 0.5 V max. Percent 4-20 mA 4 mA = 0% (calculated in 20 mA = 100% 50 mA range) Settling time 4 readings (typical) Reading rate 5,000 ct.: 4 readings per second...
  • Page 44 Specifications Table 10: AC current characteristics Characteristics Description Burden voltage 0.5 mA to 5 A: 0.9 V max. 10 A: 1.0 V max. AC+DC Accuracy AC RMS amps accuracy + DC amps accuracy Upper display frequency Accuracy (0.002% + 1 count) for 20 Hz to 5 kHz Sensitivity 10% of range Settling time...
  • Page 45 Specifications Table 12: Resistance ( ) characteristics Characteristics Description Update rate 5,000 ct.: 2 readings per second 50,000 ct.: 1 reading per second 50 M : 1 reading per second Settling time to 5 M range: 3 readings (typical) 50 M range: 4 readings (typical) Compliance voltages 0.6 V (50 and 500...
  • Page 46 Specifications Table 14: Continuity characteristics Characteristics Description Continuity threshold Beeper sounds when resistance is 100 or less (typical) Response time 1 ms Table 15: Diode test characteristics Characteristics Description Test current (typical) 0.35 mA Test voltage 3.3 V maximum, open circuit Accuracy 1.0% Table 16: Capacitance range, resolution, and accuracy (5,000 counts only)
  • Page 47 Specifications Table 17: Frequency characteristics, resolution, and accuracy Characteristics Description Signal coupling Minimum frequency 0.5 Hz Maximum 1 MHz frequency Accuracy 0.002%) + 1 count Best resolution 10,000 count: 0.01 Hz 100,000 count: 0.001 Hz Temperature Add 0.00004%/( C) beyond rated temperature range. coefficient Table 18: Frequency voltage range Range...
  • Page 48 Specifications Table 19: Duty factor characteristics Characteristics Description Range 1 Hz to 100 kHz Accuracy (0.1% + 0.05% per kHz + 1 count) for 5 V input (logic signals only) Signal coupling Resolution 0.1% Sensitivity 30% of range Table 20: Temperature characteristics Characteristics Description Main display...
  • Page 49 Specifications Table 22: Physical characteristics Characteristic Description Dimensions (H 38 mm 88 mm 183 mm (without holster) Weight (with batteries) 383 g (13.5 oz) With holster 539 g (1 lb 3 oz) Table 23: Environmental characteristics Characteristic Description Temperature Operating –10 to +50 C Non-operating (storage) –40 to +60 C...
  • Page 50 Specifications Table 24: Certifications and compliances Category Standards or description EC Declaration of Meets intent of Directive 89/336/EEC for Electromagnetic Conformity – EMC Compatibility. Compliance was demonstrated to the following specifications as listed in the Official Journal of the European Communities: EN 55011 Class A Radiated Emissions...
  • Page 51 Specifications Table 24: Certifications and compliances (cont.) Category Standards or description Installation Category Terminals on this product may have different installation category Descriptions designations. The installation categories are: CAT III Distribution-level mains (usually permanently connected). Equipment at this level is typically in a fixed industrial location CAT II Local-level mains (wall sockets).
  • Page 52: Accessories

    Accessories This section lists all standard and optional accessories for the TX1 and TX3 true RMS digital multimeters. Table 25: Standard accessories Standard accessory Product or part number Test lead set ATL01, or equivalent Test leads Certified to 1000 V CAT III (1 red, 1 black) Alligator clips Certified to 1000 V CAT III...
  • Page 53 Accessories Table 26: Optional accessories Optional accessory Product or part number Probing solutions ATL21, ATL22, ATL23, ACL21, ACL22, ACL23, ACL24 Nylon softcases AC12, AC13 Clamp-on current probes A605, A621, A622 Cables and software WSTRM TX1 and TX3 070-9893-XX Service Manual TX1 and TX3 True RMS Digital Multimeters...
  • Page 54: Setup For Optional Computer Interface

    Setup for Optional Computer Interface Accessory (WSTRM) Follow the steps below to set up the computer interface accessory: 1. Press the plastic receptacle into place in the top of the DMM protective boot. Connect the WSTRM cable to the plastic receptacle.
  • Page 55: Using Protective Boot And Versa-Stand

    Using Protective Boot and Versa-Stand TX1 and TX3 True RMS Digital Multimeters...
  • Page 56: Battery Replacement

    Battery Replacement Batteries (2 AA alkaline or rechargeable) Battery cover When you replace a battery the multimeter calibration is not affected and the stored data is not lost. Remove the battery cover only in a clean, dry environment. See Table 25 on page 43 for the descriptions and part numbers of the replaceable batteries.
  • Page 57: Servicing Tx Series Multimeters

    Servicing TX Series Multimeters The information in this section shows you how to replace fuse F1. 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.
  • Page 58 Servicing TX Series Multimeters Follow the steps below to access and replace the service-replaceable fuse: 1. Remove the battery cover. Remove the batteries and two screws on both sides of the batteries. 2. Carefully insert a screw driver between the gasket and meter case and gently lift and remove the gasket.
  • Page 59 Servicing TX Series Multimeters 3. Carefully lift the rear panel of the meter up to access the fuse F1. Remove and replace the fuse. Refer to Table 25 on page 43 for more information on which fuse to use. WARNING. Installing improper fuses can cause injury and product damage.
  • Page 60: General Care And Cleaning

    General Care and Cleaning Protect the meter from adverse weather conditions. Do not expose the LCD display to direct sunlight for long periods of time. CAUTION. To avoid damage to the meter, do not expose the interior of the meter to sprays, liquids, or solvents. Clean the exterior of the meter by removing dust with a lint-free cloth.
  • Page 61: Index

    Index 1ms peak hold, 20, 39 4–20 mA, measuring, 18 50 ohm, measuring, 14 calibration annual verification, 48 temperature, 16 calibration date, 26 capacitance AC coupled measurement, 13 discharging capacitors, 15 AC current specifications, 35 measuring, 6, 15 AC DC, applications, 9 specifications, 37 AC voltage specifications, 32-33 certifications and compliances, 41...
  • Page 62 Index relative to programmed value, 22 relative to saved value, 21 diagnostics, at power-up, 27 high impedance, 26 high resolution, 24, 25, 26 diode measuring, 14 HOLD, 20 specifications, 37 and M/M/A, 20 HrES , 24, 26 disconnecting test leads, 6 display, LCD, 3 humidity, relative, 40 double beep, 25...
  • Page 63 Index maximum (MAX), 28 RCL, 23 maximum– minimum (MAX– recalling from memory, 23 rEF , 24 MIN), 28 measurement function knob, 4 reference value power-up diagnostics, 27 db, 10, 11 memory in a circuit, 11 CLR, 22, 23 other than 1.000 VRMS, 10 rESEt , 27 EXIT, 22 RCL, 22, 23...
  • Page 64 Index voltage AC DC, 8 temperature AC+DC, 8 measuring, 16 specifications, 39-40 changing range, 13 thermocouple, 16 dB, applications, 10, 11 thermocouple offset calibration, dBm, applications, 10, 11 DC, 8 thermocouple type, 39 DC specifications, 31 verification, 16 measuring, 8 TXCOM1, 45 true RMS AC, 8 Volts, input connector, 5...

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