Amprobe 37XR-A User Manual [de]

RELREC

P-P

MAXMINAVG HOLD

AC+DC

RANGE

SLEEP OFF

0 25 50 75 100

REL

MIN MAX AVG

PEAK

cal >2sec

LOGIC

dBm

OFF

TRUE RMS

CAT 1000V

CAT 600V

COM

400mA

MAX

FUSED

10A

10A MAX

FUSED

RANGE HOLD

% Hz

MAX 1000V

750V

37XR-A

TTL

% Mk

TTL CMOS

dBm Hz

CMOS

n FCF

HdBm

VA Hz

10A

MADE IN TAIWAN

PATENTS PENDING

www.amprobe.com

37XR-A

Professional Digital Multimeter

Users Manual

x Mode d’emploi x Bedienungshandbuch x Manuale d’Uso x Manual de uso

PN 2728942 July 2006

37XR-A Digital Multimeter

Contents

Safety Information ..............................................................................................2

Symbols Used in this Manual ..........................................................................2

Introduction ........................................................................................................3

Making Measurements........................................................................................3

Verify Instrument Operation.............................................................................3

Range Selection...............................................................................................3

Correcting an Overload (-or -) Indication..................................................3

Measuring DC Voltage ..................................... See Figure -1- ........................4

Measuring AC Voltage (True rms)..........See Figure -2 - & -3- ........................4

Preparing for Current Measurements...............................................................4

Measuring DC Current ..................................... See Figure -4- ........................4

Measuring AC Current (True rms)...........See Figure -3- & -5- ........................4

Measuring Resistance ..................................... See Figure -6- ........................5

Testing for Continuity ...................................... See Figure -7- ........................5

Testing Diodes................................................. See Figure -8- ........................5

Measuring Capacitance ................................... See Figure -9- ........................5

Measuring Inductance ................................... See Figure -10- ........................6

Measuring Frequency .................................... See Figure -11- ........................6

Measuring Dutycycle .................................... See Figure -12- ........................6

Measuring dBm ............................................ See Figure -13- ........................6

Testing Logic Levels .....................................See Figure -14- ........................6

Additional Features .............................................................................................7

Input Test Lead Warning..................................................................................7

True-rms Measurements.................................................................................7

MIN MAX AVG Measurements......................................................................... 7

Peak Hold Measurements ................................................................................7

Beeper Off........................................................................................................8

Auto Power Off ................................................................................................8

REL (Relative) Measurements..........................................................................8

HOLD Measurements.......................................................................................8

Backlight..........................................................................................................8

Product Maintenance..........................................................................................9

Battery and Fuse Replacement....................... See Figure -15- ........................9

Repair .................................................................................................................9

WARRANTY...................................................................................................10

Specifications ...................................................................................................11

Users Manual

x The 37XR-A Digital Multimeter is UL, CSA, and EN61010-1 certified for



Installation Category III – 600V and Category II – 1000V. It is recommended for use with local level power distribution, appliances, portable equipment, etc, where only smaller transient overvoltages may occur, and not for primary supply lines, overhead lines and cable systems.

x Do not exceed the maximum overload limits per function (see specifications)

nor the limits marked on the instrument itself. Never apply more than 1000V dc/750 V ac rms between the test lead and earth ground.

x Inspect the DMM, test leads and accessories before every use. Do not use any

damaged part.

x Never ground yourself when taking measurements. Do not touch exposed

circuit elements or test probe tips.

x Do not operate the instrument in an explosive atmosphere. x Exercise extreme caution when: measuring voltage >20V // current >10mA // AC

power line with inductive loads // AC power line during electrical storms // current, when the fuse blows in a circuit with open circuit voltage >1000 V // servicing CRT equipment.

x Always measure current in series with the load – NEVER ACROSS a voltage

source. Check fuse first. Never replace a fuse with one of a different rating.

x Do not change the position of the Function/Range Switch while the MIN MAX,

feature is enabled. Erroneous readings will result.

x Remove test leads before opening the Battery Cover or case.

Safety Information

Symbols Used in this Manual

 Battery : Refer to the manual 7 Double insulated ; Dangerous Voltage ) Direct Current - Earth Ground % Alternating Current 5 Audible tone

, Fuse

3 Complies with EU directives

Underwriters Laboratories, Inc



Canadian Standards Association

Introduction

The 37XR-A is a true rms autoranging handheld digital multimeter for measuring or testing the following:

x DC and AC voltage x Capacitance x DC and AC current x Diodes x Resistance x Continuity x Inductance x dBm x Frequency x Logic Levels, TTL or CMOS x Dutycycle

Additional features include: MIN MAX AVG, HOLD, REL, PEAK±, Backlight, and Range Lock

Making Measurements

Verify Instrument Operation

Before attempting to make a measurement, verify that the instrument is operational and the battery is good. If the instrument is not operational, have it repaired before attempting to make a measurement.

Range Selection

In addition to autoranging the 37XR-A allows you to manually select and lock a range by pressing the RANGE button. RANGE appears on the display to indicate that manual ranging is active. Each subsequent press of the range button steps the meter to the next higher range. When the highest range is reached the next press returns the meter to the lowest range. To return to autoranging press and hold the RANGE button for 2 seconds. RANGE no longer shows on the display. Use autorange for all initial measurements. Then, when appropriate, use the RANGE button to select and lock a range.

To avoid electrical shock while manual ranging use the display annunciators to identify the actual range selected.

Correcting an Overload (-or -) Indication :

An -or - indication may appear on the display to indicate that an overload condition exists. For voltage and current measurements, an overload should be immediately corrected by selecting a higher range. If the highest range setting does not eliminate the overload, interrupt the measurement until the problem is identified and eliminated. The - indication is normal for some functions; for example, resistance, continuity, and diode test.

Warning

Measuring DC Voltage See Figure -1-

1. Set the Function Switch to @.

2. If RANGE is displayed, press the RANGE button to enable autoranging.

3. Connect the Test Leads: Red to , Black to COM

4. Connect the Test Probes to the circuit test points.

5. Read the display, and, if necessary, correct any overload (-) conditions.

Measuring AC Voltage (True rms) See Figure -2 - & -3-

See Additional Features to find out the advantages of true rms.

1. Set the Function Switch to &.

2. If RANGE is displayed, press the RANGE button to enable autoranging.

3. If dBm is displayed, press the yellow button to turn off dBm (enable

4. Connect the Test Leads: Red to , Black to COM

5. Connect the Test Probes to the circuit test points.

6. Read the display, and, if necessary, correct any overload (-) conditions.

Preparing for Current Measurements

x Turn off circuit power before connecting the test probes. x Allow the meter to cool between measurements if current measurements

approach or exceeds 10 amps.

x A warning tone sounds if you connect a test lead to a current input before you

select a current function.

x Open circuit voltage at the measurement point must not exceed 1000 V. x Always measure current in series with the load. Never measure current across a

voltage source.

Measuring DC Current See Figure -4-

1. Set the Function Switch to a current function, µA, mA, or 10A.

2. If the 10A function is not selected and RANGE is displayed, press the RANGE

button to enable autoranging.

3. Connect the Test Leads: Red to µA mA or 10A, Black to COM

4. Turn off power to the circuit being measured.

5. Open the test circuit (() to establish measurement points.

6. Connect the Test Probes in series with the load.

7. Turn on power to the circuit being measured.

8. Read the display, and, if necessary, correct any overload (-or -) conditions.

Measuring AC Current (True rms) See Figure -3- & -5-

See Additional Features to find out the advantages of true rms.

1. Set the Function Switch to a current function and range, µA, mA, or 10A.

2. If DC is displayed, press the yellow button to turn on AC.

3. If the µA or mA function is not selected and RANGE is displayed, press the RANGE button to enable autoranging.

4. Connect the Test Leads: Red to µA mA or 10A, Black to COM

5. Turn off power to the circuit being measured.

5. Open the test circuit (() to establish measurement points.

6. Connect the Test Probes in series with the load.

7. Turn on power to the circuit being measured.

8. Read the display, and, if necessary, correct any overload (

) conditions.

Measuring Resistance See Figure -6-

1. Set the Function Switch to :.

2. If

is displayed, press the yellow button to display

3. If RANGE is displayed, press the RANGE button to enable autoranging.

4. Connect the Test Leads: Red to , Black to COM

5. Turn off power to the circuit being measured. Never measure resistance across

a voltage source or on a powered circuit.

6. Discharge any capacitors that may influence the reading.

7. Connect the Test Probes across the resistance.

8. Read the display. If

to be measured.

appears on the highest range, the resistance is too large

Testing for Continuity See Figure -7-

1. Set the Function Switch to 5.

is displayed, press the yellow button to display

2. If

3. Connect the Test Leads: Red to , Black to COM

4. Turn off power to the circuit being measured.

5. Discharge any capacitors that may influence the reading.

6. Connect the Test Probes across the resistance.

7. Listen for the tone that indicates continuity (< 40 : ).

Testing Diodes See Figure -8-

1. Set the Function Switch to *.

2. Connect the Test Leads: Red to , Black to COM

3. Turn off power to the circuit being measured.

4. Free at least one end of the diode from the circuit.

5. Connect the Test Probes across the diode.

6. Read the display. A good diode has a forward voltage drop of about 0.6 V. An

open or reverse biased diode will read -.

Measuring Capacitance See Figure -9-

1. Set the Function Switch to the function.

2. If RANGE is displayed, press the RANGE button to enable autoranging.

3. Connect the Test Leads: Red to COM, Black to mA

4. Turn off power to the circuit being measured.

5. Discharge the capacitor using a 100 k: resistor.

6. Free at least one end of the capacitor from the circuit.

7. Connect the Test Probes across the capacitor. When measuring an electrolytic

capacitor match the test lead polarity to the polarity of the capacitor.

8. Read the display.

Measuring Inductance See Figure -10-

1. Set the Function Switch to mH or H.

2. If RANGE is displayed, press the RANGE button to enable autoranging.

3. Connect the Test Leads: Red to

4. Turn off power to the circuit being measured.

5. Free at least one end of the inductor from the circuit.

6. Connect the Test Probes across the inductor.

7. Read the display.

Measuring Frequency See Figure -11-

1. Set the Function Switch to Hz.

2. If % is displayed, press the yellow button to display Hz.

3. If RANGE is displayed, press the RANGE button to enable autoranging.

4. Connect the Test Leads: Red to Hz, Black to COM

5. Connect the Test Probes to the signal source.

6. Read the display.

Measuring Dutycycle See Figure -12-

1. Set the Function Switch to %.

2. If Hz is displayed, press the yellow button to display %.

3. Connect the Test Leads: Red to %, Black to COM

4. Connect the Test Probes to the signal source.

5. Read the display.

Measuring dBm See Figure -13-

The 37XR-A measures dBm relative to 1 mW referenced to 50 :. That is, 10 dBm = 10 mW, 0 dBm = 1 mW, -10 dBm = 0.1 mW, etc.

1. Set the Function Switch to dBm.

2. Press the yellow button. The display shows dBm to verify the selection.

3. Connect the Test Leads: Red to , Black to COM

4. Connect the Test Probes to the signal source.

5. Read the display.

Testing Logic Levels See Figure -14-

The 37XR-A tests logic levels for both TTL and CMOS logic. The meter displays 9 plus a  for a high-level (true) condition. The meter beeps and displays an 9and a  for a low-level (false) condition. See Specifications for the logic 1 and logic 0 voltage limits. Out-of-limits indications are dispalyed as 9 only, no  or beep occur.

1. Set the Function Switch to LOGIC

2. Press the TTL CMOS button to display the selected type.

3. Connect the Test Leads: Red to , Black to COM

4. Connect the black lead to logic common.

5. Connect the red lead to the logic test point.

6. Read the display.

H mA, Black to COM

Additional Features

Input Test Lead Warning

The meter emits a continuous tone when a test lead is placed in the mA or 10A input jack and the Function/Range Switch is not set to a correct current position. (If the meter is connected to a voltage source with leads connected for current, very high current could result). All current ranges are protected by fast acting fuses.

True-rms Measurements

For ac measurements most DMMs average the ac input signal and display the result as an estimated rms value. This average-responding method is accurate for sinusoidal waveforms, but can be very inaccurate for distorted waveforms. To ensure the most accurate measurements, always use a true-rms DMM when measuring ac voltage or ac current on circuits for the following kinds of applications:

x Power Supplies - diodes x Controllers x Power Limiting - SCR or Triac x Starting - motors x Florescent Lighting - ballasts x Speed Control - motors x Pulsed Signals x Any non-sinusoidal ac waveform

MIN MAX AVG Measurements

The MIN MAX AVG function reads and updates the display to show the maximum or minimum value measured after you press the MIN MAX AVG button.

Pressing the MIN MAX AVG button for less than 1 second will put the meter into a mode of displaying the maximum, minimum, average, or actual readings. Each time the button is pressed, the meter will cycle to the next display mode as shown in the table below. Press the MIN MAX AVG button for more than 2 seconds to disable this feature.

Button Display Value Displayed

< 1 second

< 1 second < 1 second

> 2 seconds

Peak Hold Measurements

Note: The PEAK function calibrates itself to meet the specifications.

Peak Hold records and stores the positive and negative peak values that occur while measuring ac current or ac voltage. To enable the Peak Hold feature press the PEAK button for more than 2 seconds. The display will show CAL to indicate the calibration cycle is in process. After the CAL indication clears, press the PEAK button again to display the maximum (P+) value for the ac voltage or ac current being measured. The display will toggle between the P+ and P- readings each time the PEAK button is pressed. Press the PEAK button for more than 1 second to exit the PEAK function.

REC MAX REC MIN REC AVG REC

Exit MIN MAX AVG

Maximum value after feature activated Minimum value after feature activated Average value after feature is activated Actual reading, min max being recorded. Normal measurement, actual reading

Beeper Off

The beeper is an aural indicator to identify when the DMM is performing a function, making a range change, detecting a limit, and so on. To disable the beeper use the following procedure:

1. Set the Function Switch to OFF.

2. Press and hold the HOLD button while turning the Function Switch to the desired function. The no-beep symbol

3. Release the HOLD button. The Auto Power Off feature will remain disabled until the meter is turned off and then on.

Note: To disable both the beeper and Auto Power Off press and hold the REL button while turning on the DMM.

Auto Power Off

Auto Power Off is a battery saving feature that puts the meter into a sleep mode if the Function/Range Switch has not changed position in the last 30 minutes. To wake the meter turn it off and then on.

The Auto Power Off feature can be disabled to keep the meter from going to sleep. This feature is useful when using the MIN MAX mode for extended periods. To disable the Auto Power Off feature use the following procedure:

1. Set the Function Switch to OFF.

2. Press and hold the MIN MAX AVG button while turning the Function Switch from OFF to the desired function. The SLEEP OFF message shows on the display.

3. Release the MIN MAX AVG button. The Auto Power Off feature will remain disabled until the meter is turned off and then on.

Note: To disable both Auto Power Off and the beeper press and hold the REL button while turning on the DMM.

REL (Relative) Measurements

The Relative mode displays the difference between the actual reading and a reference value. It may be used with any function or range. To make a relative measurement first establish a reference value by measuring a value and then pressing the REL button after the reading has stabilized. This stores the measured value as the reference and sets the display to zero. The meter subtracts the reference value from subsequent measurements and displays this difference as the relative value. Measurement values greater than the reference value will be positive and values less than the reference value will be negative. To exit the Relative Mode, Press and hold the REL button for 2 seconds.

HOLD Measurements

The HOLD button causes the meter to capture and continuously display a measurement reading. To use the HOLD feature make a measurement, and then, after the reading has stabilized, momentarily press the HOLD button. You can remove the test leads and the reading will remain on the display. Pressing the HOLD button again releases the display.

Backlight

Pressing the  button illuminates the display with a blue backlight. The backlight will automatically turn off in about 60 seconds. Frequent use of the backlight will decrease battery life.

shows on the display.

Product Maintenance

Cleaning

To clean the meter, use a soft cloth moistened with water. To avoid damage to the plastic components do not use benzene, alcohol, acetone, ether, paint thinner, lacquer thinner, ketone or other solvents to clean the meter.

Troubleshooting

If the meter appears to operate improperly, check the following items first.

1. Review the operating instructions to ensure the meter is being used properly.

2. Inspect and test the continuity of the test leads.

3. Make sure the battery is in good condition. The low battery symbol  appears

when the battery falls below the level where accuracy is guaranteed. Replace a low-battery immediately.

4. Check the condition of the fuses if the current ranges operate incorrectly.

Battery and Fuse Replacement See Figure -15-

To avoid electrical shock remove the test leads from both the meter and the test circuit before accessing the battery or the fuses.

To access the battery and the mA fuse remove the two screws holding the Battery/Fuse Cover in place, and lift the cover from the meter.

To replace the mA fuse, pry it from its clips using a small screwdriver. A spare mA fuse is located between the battery and the mA fuse.

mA Fuse: Fast Blow .5A/1000V, minimum interrupt rating 30 kA (6.3 x 32 mm) (Amprobe

To replace the 10 A fuse: 1) Remove the battery. 2) Remove the four rear-case screws. 3) Separate the case. 4) Remove the 10 A fuse cover. 5) Remove and replace the 10A fuse. 6) Re-install the fuse cover. 7) Reassemble the meter.

10A Fuse: Fast Blow 10A/1000V, minimum interrupt rating 30 kA (10 x 38 mm) (Amprobe

Repair

All test tools returned for warranty or non-warranty repair or for calibration should be accompanied by the following: your name, company’s name, address, telephone number, and proof of purchase. Additionally, please include a brief description of the problem or the service requested and include the test leads with the meter. Non-warranty repair or replacement charges should be remitted in the form of a check, a money order, credit card with expiration date, or a purchase order made payable to Amprobe

In-Warranty Repairs and Replacement – All Countries

Please read the warranty statement and check your battery before requesting repair. During the warranty period any defective test tool can be returned to your Amprobe distributor for an exchange for the same or like product. Please check the “Where to Buy” section on www.amprobe.com States and Canada In-Warranty repair and replacement units can also be sent to a

Test Tools Service Center (see below for address).

Amprobe



WARNING

FP500)



FP100).



Test Tools.



Test Tools



for a list of distributors near you. Additionally, in the United

Non-Warranty Repairs and Replacement – US and Canada

Non-warranty repairs in the United States and Canada should be sent to a Amprobe Test Tools Service Center. Call Amprobe current repair and replacement rates.

In USA In Canada Amprobe Everett, WA 98203 Mississauga, ON L4Z 1X9 Tel: 888-993-5853 Tel: 905-890-7600 Fax: 425-446-6390 Fax: 905-890-6866

Non-Warranty Repairs and Replacement – Europe

European non-warranty units can be replaced by your Amprobe Test Tools distributor for a nominal charge. Please check the “Where to Buy” section on www.amprobe.com of distributors near you. European Correspondence Address* Amprobe P.O. Box 1186 5602 BD Eindhoven The Netherlands

*(Correspondence only – no repair or replacement available from this address. European customers please contact your distributor).

This 37XR-A Digital Multimeter is warranted against any defects of material or workmanship within a period of three (3) years following the date of purchase of the multimeter by the original purchaser or original user. Any multimeter claimed to be defective during the warranty period should be returned with proof of purchase to an authorized Amprobe Test Tools Service Center or to the local Amprobe Test Tools dealer or distributor where your multimeter was purchased. See Repair section for details. Any implied warranties arising out of the sale of a Amprobe Test Tools multimeter, including but not limited to implied warranties of merchantability and fitness for a particular purpose, are limited in duration to the above stated one (1) year period. Amprobe Test Tools shall not be liable for loss of use of the multimeter or other incidental or consequential damages, expenses, or economical loss or for any claim or claims for such damage, expenses or economical loss. Some states do not allow limitations on how long implied warranties last or the exclusion or limitation of incidental or consequential damages, so the above limitations or exclusions may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.

Test Tools Amprobe Test Tools

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Test Tools Europe

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Test Tools or inquire at your point of purchase for



WARRANTY

for a list

Specifications General Specifications

(Stated accuracy at 23 °C ±5 °C, <75 % relative humidity.)

Display: 4 ¾ digit liquid crystal display (LCD) with a 41 segment analog bargraphic.

Auto ranging: 9999 counts Manual ranging: 9999 counts Polarity: Automatic, positive implied,

negative polarity indication.

Overrange: (OL) or (-OL) is displayed. Zero: Automatic. Low battery indication: The is

displayed when the battery voltage drops below the operating level.

Auto power off: Approx. 30 minutes. Measurement rate: 2 times per second,

nominal. Operating environment: 0 °C to 50 °C

at <70 % R.H. Storage temperature: -20 °C to 60 °C,

0 to 80 % R.H. with battery removed from meter.

Temperature Coefficient: 0.1 × (specified accuracy) per °C. (0 °C to 18 °C, 28 °C to 50 °C).

Altitude: (2000 m) 6562 feet Power: Single standard 9-volt battery,

NEDA 1604, JIS 006P, IEC 6F22. Battery life: 75 hours typical with carbon-zinc. 150 hours typical with alkaline. Using the backlight will

decrease battery life. Dimensions: 196 mm (H) ×92 mm (W) ×60 mm (D). Weight: with battery and holster, 482 grams

Box contents:

Test leads /w alligator clips 1 set Users Manual 1 Magne-Grip

® Holster 1

Clip, magnet, and strap. 1 9V battery (installed) 1 spare mA fuse 0.5A/1000V 1

Approvals:

Safety: Conforms to EN61010- 1: Cat II – 1000V / Cat III - 600V; Class 2, Pollution degree II; UL3111-1; CSA C22.2 No. 1010.1, criteria B.

3 W  

EMC: Conforms to EN61326-1. This product complies with requirements of

the following European Community Directives: 89/ 336/ EEC (Electromagnetic Compatibility) and 73/ 23/ EEC (Low Voltage) as amended by 93/ 68/ EEC (CE Marking). However, electrical noise or intense electromagnetic fields in the vicinity of the equipment may disturb the measurement circuit. Measuring instruments will also respond to unwanted signals that may be present within the measurement circuit. Users should exercise care and take appropriate precautions to avoid misleading results when making measurements in the presence of electronic interference.

Electrical Specifications

DC VOLTS

Ranges: 1000mV, 10V, 100V, 1000V (Auto/Manual ranging )

Resolution: 100 µV Accuracy: ±(0.1 % rdg + 5 dgts) Input impedance: 10 M: Overload protection: 1000 V dc or 750 V

ac rms AC VOLTS TRUE RMS (45 Hz - 2 kHz) Ranges: 1000mV, 10V, 100V, 750V

(Auto/Manual ranging ) Resolution: 100 µV Minimum reading on 1000mV range:

14 mV Accuracy: ±(1.2 % rdg + 10 dgts) 45 Hz to 500 Hz ±(2.0% rdg + 10 dgts) 500 Hz to 2 kHz ±(2.0% rdg + 10 dgts) 45 Hz to 1 kHz on 750 V range

Peak Hold accuracy: ±(3.0 % + 200 dgts) on 100V, 750V range

1000mV, 10V ranges unspecified Crest Factor: d 3 Input impedance: 10 M: AC coupled true rms specified from 5% to 100% of range Overload protection: 1000 V dc or 750 V ac rms

DC CURRENT

Ranges: 100µA, 1000µA, 10mA, 100mA, 400mA, 10A (Auto/Manual ranging ) Resolution: 0.01 µA Accuracy: ±(0.5 % rdg +10 dgts) on 100µA range ±(0.5 % rdg + 5 dgt) on 1000µA to 400mA ranges ±(1.5 % rdg + 10 dgts) on 10A range

Input protection: 0.5A/1000V fast blow ceramic fuse 6.3×32 mm on µA/mA input 10A/1000V fast blow ceramic fuse 10×38 mm on 10A input

10A input:

10 A for 4 minutes maximum

followed by a 12 minute cooling period

Burden voltage: PA Range: 1 mV/ 1 PA mA Range: 10 mV/ 1 mA A Range: 35 mV/ 1 A AC CURRENT TRUE RMS (45 Hz to 1 kHz) Ranges:100µA, 1000µA, 10mA, 100mA, 400mA, 10A (Auto/Manual ranging ) Resolution: 0.01 µA Accuracy: ±(1.5% rdg +10 dgts) on 100µA to 100mA ranges ±(2.0% rdg +10 dgts) on 400mA range ±(2.5% rdg + 20 dgts) on 10A range Peak Hold accuracy: ±(3.0 % + 200 dgts) 100µA range unspecified Crest Factor: 3 d AC coupled true rms specified from 5 % to 100 % of range Input protection: 0.5A/1000V fast blow ceramic fuse 6.3×32 mm on µA/mA input

10A/1000V fast blow ceramic fuse 10×38 mm on 10A input

10 A for 4 minutes maximum

10A input:

followed by a 12 minute cooling period

Burden voltage: See DC Current

RESISTANCE

Ranges: 1000:, 10k:, 100k:, 1000k:, 10M:, 40M:(Auto/Manual ranging ) Resolution: 100 m:

Accuracy: ±(0.5% rdg + 8 dgts) on 1000:to 1000k:ranges

±(1.0% rdg + 10 dgts) on 10M: range ±(2.0% rdg + 10 dgts) on 40M: range Open circuit volts: -0.45 V dc typical Overload protection: 1000 V dc or 750 V ac rms

CAPACITANCE

Ranges: 40nF, 400nF, 4µF, 40µF 400uF (3999 counts) (Auto/Manual ranging )

Resolution: 0.01 nF Accuracy: ±(3.0 % rdg + 10 dgts) on

40nF, 400uF ranges ±(3.0 % rdg + 5 dgts) on 400nF to 40uF

ranges Test voltange: < 1 V Test Frequency: 1.3 Hz on 40nF to 40µF

ranges; 0.7 Hz on 400µF range Input protection: 0.5A/1000V fast blow

ceramic fuse 6.3×32 mm on µA/mA input

INDUCTANCE

Ranges: 4mH, 40mH, 400mH, 4H, 40H ( 3999 counts ) (Auto/Manual ranging )

Resolution: 1 µH Accuracy: ±(5.0 % rdg + 30 dgts)* *For values of Q d 7 Test frequecy: 1 kHz on 4mH, 40mH ranges, 200 Hz on 400mH to 40H

ranges. Input protection: 0.5A/1000V fast blow

ceramic fuse 6.3×32 mm on µA/mA input

FREQUENCY

Ranges: 100Hz, 1000Hz, 10kHz, 100kHz, 1000KHz, 10MHz, (Auto/Manual ranging ) Resolution: 0.01 Hz

Accuracy: ±(0.1 % rdg + 5 dgts) Sensitivity: 3Hz to 1MHz: >1.5 V rms; 1MHz

to 10MHz: >2 V rms, <5 V rms Minimum input range: 100Hz range > 3 Hz,

1000Hz range > 30 Hz Minimum pulse width: > 25 ns Duty cycle limits: > 30 % and < 70 % Overload protection: 1000 V dc or 750 V ac

rms

DUTY CYCLE

Ranges: 0 to 90 % Resolution: 0.01 % Pulse width:>10 us Frequency range: 0% to 10% (40 Hz to 20 kHz) 10% to 90% (40 Hz to 990 Hz) Accuracy: (5 V logic ) ±(2.0 % rdg + 20 dgts) Overload protection: 1000 V dc or 750 V ac rms

LOGIC TEST

Logic Type: TTL, CMOS Thresholds Logic 1 ( Hi ): TTL : 2.8 V ± 0.8 V, CMOS: 4 V ± 1 V Thresholds Logic 0 ( Lo ): TTL : 0.8 V ± 0.5 V, CMOS: 2 V ± 0.5 V Test Voltage: TTL: 5 V dc, CMOS: > 5 V dc and < 10 V dc Frequency Response: 20 MHz Pulse Width: 25 ns min Duty Cycle: >30 % and <70 % Indication: 40 ms beep at logic 0 ( LO ) Overload protection: 1000 V dc or 750 V ac rms

dBm

Ranges: -13dBm to + 50dBm Resolution: 0.01 dBm Accuracy: ±0.7 dB + 8 dgts ( 45 Hz to 5 kHz ) ±2.5 dB + 8 dgts ( 5 kHz to 10 kHz )

Reference impedance: 50 : Input protection: 10 M: Overload protection: 1000 V dc or 750 V

ac rms

CONTINUITY

Audible indication: Less than 40: Response time: 100 ms Overload protection:1000 V dc or 750 V ac rms

DIODE TEST

Test current: 1.0 mA (approximate) Accuracy: ±(1.5 % rdg + 5 dgts) Resolution: 1 mV Open circuit volts: 3.0 dc typical Overload protection: 1000 V dc or 750 V ac rms mA, 10A jack: Input warning detects

wrong function selection

AUXILIARY FEATURES

MIN/AVG/MAX: Displays the maximum, minimum, or average reading following a MIN, MAX, or AVG selection. DATA HOLD: Freeze the latest reading on the display. REL: Initiates relative measurements.

PEAKr: Record the peak+ or peak value in a measurement. It is usable with ac voltage, ac current measurements. If the pressed time >2 seconds, the PEAK function will enter the calibration mode; the LCD will show CAL and the internal buffer will remember the internal offset voltage then go back to the measure mode. RANGE: Initiates manual-range selection.

Backlight: Backlight auto-off approx. 60 seconds

TTL/CMOS: Shift LOGIC TTL or CMOS Shift: Shift dBm, ACA, continuity, DUTY

CYCLE

REPLACEMENT PARTS

TL36 Test Lead Set with Alligator clips FP500 mA fuse - Fuse Pack 0.5A/1000V

(4 each)

FP100 10A fuse - Fuse Pack 10A/1000V

(2 each)

and strap

Holster, clip, magnet,

XR-H2 Magne-Grip