U119XA UG.
U119XA UG.book Page II Thursday, September 15, 2011 4:03 PM Notices © Agilent Technologies, Inc., 2011 Warranty No part of this manual may be reproduced in any form or by any means (including electronic storage and retrieval or translation into a foreign language) without prior agreement and written consent from Agilent Technologies, Inc. as governed by United States and international copyright laws.
U119XA UG.book Page III Thursday, September 15, 2011 4:03 PM Safety Symbols The following symbols on the instrument and in the documentation indicate precautions which must be taken to maintain safe operation of the instrument.
U119XA UG.book Page IV Thursday, September 15, 2011 4:03 PM Safety Considerations Read the information below before using this instrument. The following general safety precautions must be observed during all phases of operation, service, and repair of this instrument. Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards for design, manufacture, and intended use of the instrument.
U119XA UG.book Page V Thursday, September 15, 2011 4:03 PM WA R N I N G • Never use the meter in wet conditions or when there is water on the surface. If the meter is wet, ensure that the meter is dried only by trained personnel. • Before use, verify the meter's operation by measuring a known voltage. Use caution when working above 60 V DC, 30 V AC RMS, or 42.4 V peak. Such voltages pose a shock hazard. • When measuring current, turn off the circuit power before connecting the meter in the circuit.
U119XA UG.book Page VI Thursday, September 15, 2011 4:03 PM Environmental Conditions This instrument is designed for indoor use and in an area with low condensation. The table below shows the general environmental requirements for this instrument.
U119XA UG.book Page VII Thursday, September 15, 2011 4:03 PM Regulatory Markings The CE mark is a registered trademark of the European Community. This CE mark shows that the product complies with all the relevant European Legal Directives. The C-tick mark is a registered trademark of the Spectrum Management Agency of Australia. This signifies compliance with the Australia EMC Framework regulations under the terms of the Radio Communication Act of 1992.
U119XA UG.book Page VIII Thursday, September 15, 2011 4:03 PM Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/EC This instrument complies with the WEEE Directive (2002/96/EC) marking requirement. This affixed product label indicates that you must not discard this electrical or electronic product in domestic household waste. Product Category: With reference to the equipment types in the WEEE directive Annex 1, this instrument is classified as a “Monitoring and Control Instrument” product.
U119XA UG.book Page IX Thursday, September 15, 2011 4:03 PM Declaration of Conformity (DoC) The Declaration of Conformity (DoC) for this instrument is available on the Agilent website. You can search the DoC by its product model or description at the web address below. http://regulations.corporate.agilent.com/DoC/search.htm NOTE U1190A Series User’s Guide If you are unable to search for the respective DoC, please contact your local Agilent representative.
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U119XA UG.book Page XII Thursday, September 15, 2011 4:03 PM Testing Diodes 39 Measuring Capacitance 43 Measuring Temperature 45 Measuring AC or DC Current (up to µA) Measuring Frequency 3 48 50 Clamp Meter Features Detecting AC Voltage Presence (Vsense) Making Relative Measurements (Null) 54 57 Capturing Maximum and Minimum Values (Max.
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U119XA UG.book Page 2 Thursday, September 15, 2011 4:03 PM 1 Introduction About This Manual About This Manual The descriptions and instructions in this manual apply to the Agilent U1191A, U1192A, U1193A, and U1194A handheld clamp meters (hereafter referred to as the clamp meter). The model U1194A appears in all illustrations. Documentation map The following manuals and software are available for your clamp meter. For the very latest version, please visit our website at: http://www.agilent.
U119XA UG.book Page 3 Thursday, September 15, 2011 4:03 PM Introduction Preparing Your Clamp Meter 1 Preparing Your Clamp Meter Checking the shipment When you receive your clamp meter, check the shipment according to the following procedure. 1 Inspect the shipping container for damage. Signs of damage may include a dented or torn shipping container or cushioning material that indicates signs of unusual stress or compacting. Save the packaging material in case the clamp meter needs to be returned.
U119XA UG.book Page 4 Thursday, September 15, 2011 4:03 PM 1 Introduction Preparing Your Clamp Meter 1 Open the battery cover. Loosen the screw with a suitable Phillips screwdriver and remove the battery cover as shown in Figure 1- 1. 2 Insert the batteries. Observe the proper battery polarity. The terminal ends of each battery are indicated inside the battery compartment. 3 Close the battery cover. Place the battery cover back in its original position and tighten the screw.
U119XA UG.book Page 5 Thursday, September 15, 2011 4:03 PM Introduction Preparing Your Clamp Meter 1 Table 1-1 Battery level indicator Indication Battery capacity Full capacity 2/3 capacity 1/3 capacity (Flashing periodically) Almost empty[1] [1] Batteries change advised. Always use the specified battery type listed in the “Product Characteristics” on page 62.
U119XA UG.book Page 6 Thursday, September 15, 2011 4:03 PM 1 Introduction Preparing Your Clamp Meter Turning on your clamp meter To power ON your clamp meter, turn the rotary switch from the OFF position to any other position. Figure 1-2 Powering on the clamp meter To power OFF your clamp meter, turn the rotary switch to the OFF position.
U119XA UG.book Page 7 Thursday, September 15, 2011 4:03 PM Introduction Preparing Your Clamp Meter 1 Automatic Power-Off (APO) Your clamp meter automatically turns off if the rotary switch is not moved or a key is not pressed for 15 minutes (default). The clamp meter will beep thrice before it powers off. Pressing any key or turning the rotary switch to a new position will turn the clamp meter back on after it is powered off automatically.
U119XA UG.book Page 8 Thursday, September 15, 2011 4:03 PM 1 Introduction Preparing Your Clamp Meter Follow the steps below to change the timer period or completely disable the backlight timer. 1 Press and hold while powering on the clamp meter to enter the Setup menu. 2 Press again. The backlight (b #) timer period is the second Setup item shown. 3 Press to make changes to the b # value.
U119XA UG.book Page 9 Thursday, September 15, 2011 4:03 PM Introduction Preparing Your Clamp Meter 1 Follow the steps below to change the timer period or completely disable the flashlight timer. 1 Press and hold while powering on the clamp meter to enter the Setup menu. 2 Press twice. The flashlight (t #) timer period is the third Setup item shown. 3 Press to make changes to the t # value.
U119XA UG.book Page 10 Thursday, September 15, 2011 4:03 PM 1 Introduction Preparing Your Clamp Meter Power-on options Some options can be selected only while you turn the clamp meter on. These power- on options are listed in the table below. To select a power- on option, press and hold the specified key in Table 1- 2 while turning the rotary switch from the OFF position to any other position. Table 1-2 Power-on options Key Description Tests the LCD.
U119XA UG.book Page 11 Thursday, September 15, 2011 4:03 PM Introduction Your Clamp Meter in Brief 1 Your Clamp Meter in Brief Dimensions Front view 77.14 mm 77.
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U119XA UG.book Page 13 Thursday, September 15, 2011 4:03 PM Introduction Your Clamp Meter in Brief 1 Overview Front panel The front panel parts of your clamp meter are described in this section.
U119XA UG.book Page 14 Thursday, September 15, 2011 4:03 PM 1 Introduction Your Clamp Meter in Brief Rear panel The rear panel parts of your clamp meter are described in this section.
U119XA UG.book Page 15 Thursday, September 15, 2011 4:03 PM Introduction Your Clamp Meter in Brief 1 Rotary switch The measurement functions for each rotary switch position are described in Table 1- 3 on page 16. Turning the rotary switch changes the measurement function and resets all other measurement options. NOTE Some rotary switch positions have a shifted function printed in orange. Press to switch between the shifted and primary function.
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U119XA UG.book Page 17 Thursday, September 15, 2011 4:03 PM Introduction Your Clamp Meter in Brief 1 Keypad The operation of each key is explained below. Pressing a key enables a function, displays a related symbol, and emits a beep. Turning the rotary switch to another position resets the current operation of the key. Click the respective “Learn more” pages for more information on each function.
U119XA UG.book Page 18 Thursday, September 15, 2011 4:03 PM 1 Introduction Your Clamp Meter in Brief Display screen The display annunciators of your clamp meter are described in this section. See also “Measurement units” on page 20 for a list of available measurement signs and notations. General display annunciators The general display annunciators of your clamp meter are described in the table below.
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U119XA UG.book Page 20 Thursday, September 15, 2011 4:03 PM 1 Introduction Your Clamp Meter in Brief Measurement units The available signs and notations for each measurement function in your clamp meter are described in Table 1- 6. The units listed below are applicable to the primary display measurements of your clamp meter. Table 1-6 Measurement units display 20 Sign/Notation Description M Mega 1E+06 (1000000) k kilo 1E+03 (1000) n nano 1E–09 (0.000000001) micro 1E–06 (0.
U119XA UG.book Page 21 Thursday, September 15, 2011 4:03 PM Introduction Your Clamp Meter in Brief 1 Input terminals The terminal connections for the different measurement functions of your clamp meter are described in the table below. Observe the rotary switch position of your clamp meter before connecting the test leads to the connector terminals.
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U119XA UG.book Page 23 Thursday, September 15, 2011 4:03 PM Introduction Cleaning Your Clamp Meter 1 Cleaning Your Clamp Meter WA R N I N G To avoid electrical shock or damage to the clamp meter, ensure that the insides of the casing stay dry at all times. Dirt or moisture in the terminals can distort readings. Follow the steps below to clean your clamp meter. 1 Turn the clamp meter off, and remove the test leads.
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U119XA UG.book Page 25 Thursday, September 15, 2011 4:03 PM U1190A Series Handheld Clamp Meter User’s Guide 2 Making Measurements Measuring AC or DC Current 26 Measuring AC Voltage 30 Measuring DC Voltage 32 Measuring Resistance 34 Testing for Continuity 36 Testing Diodes 39 Measuring Capacitance 43 Measuring Temperature 45 Measuring AC or DC Current (up to µA) 48 Measuring Frequency 50 This chapter describes how to take measurements with your clamp meter.
U119XA UG.book Page 26 Thursday, September 15, 2011 4:03 PM 2 Making Measurements Measuring AC or DC Current Measuring AC or DC Current WA R N I N G Ensure that the test leads are disconnected from the input terminals when measuring current with the clamp jaws. CAUTION Ensure that the clamp meter measures only one conductor at a time. Measuring multiple conductors may cause inaccuracy in measurement readings due to the vector sum of currents flowing in the conductors.
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U119XA UG.book Page 28 Thursday, September 15, 2011 4:03 PM 2 Making Measurements Measuring AC or DC Current Using the wire separator and hook Your clamp meter’s design has a wire separator and hook feature (see Figure 2- 3) that can be used to separate individual wires or cables for measurements from a mesh of wires or cables. Use the wire separator and hook to avoid touching live wires or cables without the necessary insulation protection or powering off the voltage or current source.
U119XA UG.book Page 29 Thursday, September 15, 2011 4:03 PM Making Measurements Measuring AC or DC Current 2 1 Open the clamp jaw slightly to reveal the wire separator tip. Use the wire separator tip to locate the desired wire or cable. Mesh of wires or cables 2 Separate the wire or cable by hooking it in the clamp jaw securely and pulling it back. 3 Close the clamp jaw to secure the wire or cable, and read the measurement.
U119XA UG.book Page 30 Thursday, September 15, 2011 4:03 PM 2 Making Measurements Measuring AC Voltage Measuring AC Voltage NOTE Reversing the leads will produce a negative reading, but it will not damage the clamp meter. Set up your clamp meter to measure AC voltage as shown in Figure 2- 5. Probe the test points, and read the display. NOTE For U1193A and U1194A models: AC voltage measurements measured with this clamp meter are returned as true RMS (root mean square) readings.
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U119XA UG.book Page 32 Thursday, September 15, 2011 4:03 PM 2 Making Measurements Measuring DC Voltage Measuring DC Voltage Set up your clamp meter to measure DC voltage as shown in Figure 2- 7. Probe the test points, and read the display. NOTE This clamp meter displays DC voltage values as well as their polarity. Negative DC voltages will return a negative sign on the left of the display.
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U119XA UG.book Page 34 Thursday, September 15, 2011 4:03 PM 2 Making Measurements Measuring Resistance Measuring Resistance Set up your clamp meter to measure resistance as shown in Figure 2- 9. Probe the test points, and read the display. CAUTION To avoid possible damage to your clamp meter or to the equipment under test, disconnect the circuit power and discharge all high-voltage capacitors before measuring resistance.
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U119XA UG.book Page 36 Thursday, September 15, 2011 4:03 PM 2 Making Measurements Testing for Continuity Testing for Continuity Set up your clamp meter to test for continuity as shown in Figure 2- 12. Probe the test points, and read the display. CAUTION To avoid possible damage to your clamp meter or to the equipment under test, disconnect the circuit power and discharge all high-voltage capacitors before testing for continuity. NOTE Continuity is the presence of a complete path for current flow.
U119XA UG.book Page 37 Thursday, September 15, 2011 4:03 PM Making Measurements Testing for Continuity NOTE 2 • You can set the beeper to sound and the backlight to flash as a continuity indication whether the circuit-under-test is less than (short) the threshold resistance. • The continuity function detects intermittent shorts lasting as short as 1 ms. A brief short causes the multimeter to emit a short beep and flash. • You can enable or disable the visual alert via the Setup menu.
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U119XA UG.book Page 39 Thursday, September 15, 2011 4:03 PM Making Measurements Testing Diodes 2 Testing Diodes Set up your clamp meter to test diodes as shown in Figure 2- 15. Probe the test points, and read the display. CAUTION NOTE To avoid possible damage to your clamp meter or to the equipment under test, disconnect the circuit power and discharge all high-voltage capacitors before testing diodes.
U119XA UG.book Page 40 Thursday, September 15, 2011 4:03 PM 2 Making Measurements Testing Diodes NOTE If the beeper is enabled during diode test, the clamp meter will beep briefly for a normal junction and sound continuously for a shorted junction. Reverse the probes (as shown in Figure 2- 16) and measure the voltage across the diode again. Assess the diode according to the following guidelines: • A diode is considered good if the clamp meter displays in reverse- bias mode.
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U119XA UG.book Page 43 Thursday, September 15, 2011 4:03 PM Making Measurements Measuring Capacitance 2 Measuring Capacitance This measurement function is applicable for U1192A, U1193A, and U1194A models only. Set up your clamp meter to measure capacitance as shown in Figure 2- 18. Probe the test points, and read the display.
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U119XA UG.book Page 45 Thursday, September 15, 2011 4:03 PM Making Measurements Measuring Temperature 2 Measuring Temperature This measurement function is applicable for the U1194A model only. Set up your clamp meter to measure temperature as shown in Figure 2- 20. Probe the test points, and read the display. WA R N I N G Do not connect the thermocouple to electrically live circuits. Doing so will potentially cause fire or electric shock. CAUTION Do not bend the thermocouple leads at sharp angles.
U119XA UG.book Page 46 Thursday, September 15, 2011 4:03 PM 2 Making Measurements Measuring Temperature Changing the default temperature unit Follow the steps below to change the temperature unit between Celsius (°C) or Fahrenheit (°F). 1 Press and hold and while powering on the clamp meter to enter the temperature unit selection menu. 2 Press to make changes to the temperature unit. Press or (°C or °F). 3 Press to change the temperature unit to save the changes.
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U119XA UG.book Page 48 Thursday, September 15, 2011 4:03 PM 2 Making Measurements Measuring AC or DC Current (up to µA) Measuring AC or DC Current (up to µA) WA R N I N G Never attempt an in-circuit current measurement where the open-circuit potential to earth is greater than 1000 V. Doing so will cause damage to the clamp meter and possible electric shock or personal injury.
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U119XA UG.book Page 50 Thursday, September 15, 2011 4:03 PM 2 Making Measurements Measuring Frequency Measuring Frequency WA R N I N G Never measure the frequency where the voltage or current level exceeds the specified range. This measurement function is applicable for U1192A, U1193A, and U1194A models only. Your clamp meter allows simultaneous monitoring of realtime voltage or current with frequency measurements.
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U119XA UG.book Page 53 Thursday, September 15, 2011 4:03 PM U1190A Series Handheld Clamp Meter User’s Guide 3 Clamp Meter Features Detecting AC Voltage Presence (Vsense) 54 Making Relative Measurements (Null) 57 Capturing Maximum and Minimum Values (Max.Min) 58 Freezing the Display (Hold) 60 The chapter describes the additional features available in your clamp meter.
U119XA UG.book Page 54 Thursday, September 15, 2011 4:03 PM 3 Clamp Meter Features Detecting AC Voltage Presence (Vsense) Detecting AC Voltage Presence (Vsense) WA R N I N G • You are advised to test on a known live circuit within the rated AC voltage range of this product before and after each use to ensure that the Vsense detector works. • Voltage could still be present even if there is no Vsense alert indication. Do not rely on the Vsense detector with shielded wire.
U119XA UG.book Page 55 Thursday, September 15, 2011 4:03 PM Clamp Meter Features Detecting AC Voltage Presence (Vsense) NOTE 3 • Place the top of the clamp meter close to a conductor when sensing for AC voltages (as low as 24 V in the Hi.SE setting). • The low sensitivity setting can be used on flush mounted wall sockets or outlets and various power strips or cords.
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U119XA UG.book Page 57 Thursday, September 15, 2011 4:03 PM Clamp Meter Features Making Relative Measurements (Null) 3 Making Relative Measurements (Null) When making Null measurements, also called relative, each reading is the difference between a stored (measured) null value and the input signal. One possible application is to increase the accuracy of a resistance measurement by nulling the test lead resistance. Nulling the leads is also particularly important prior to making capacitance measurements.
U119XA UG.book Page 58 Thursday, September 15, 2011 4:03 PM 3 Clamp Meter Features Capturing Maximum and Minimum Values (Max.Min) Capturing Maximum and Minimum Values (Max.Min) The Max.Min operation stores the maximum, minimum, and average input values during a series of measurements. When the input goes below the recorded minimum value or above the recorded maximum value, the clamp meter beeps and records the new value. The clamp meter also calculates an average of all readings taken since the Max.
U119XA UG.book Page 59 Thursday, September 15, 2011 4:03 PM Clamp Meter Features Capturing Maximum and Minimum Values (Max.Min) NOTE If an overload is recorded, the averaging function will be stopped. shown in place of the average value. 3 is This mode is useful for capturing intermittent readings, recording minimum and maximum readings unattended, or recording readings while equipment operation keeps you from observing the clamp meter display.
U119XA UG.book Page 60 Thursday, September 15, 2011 4:03 PM 3 Clamp Meter Features Freezing the Display (Hold) Freezing the Display (Hold) To freeze the display for any function, press the key. Figure 3-6 Hold display Press 60 again to disable this function.
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U119XA UG.book Page 62 Thursday, September 15, 2011 4:03 PM 4 Characteristics and Specifications Product Characteristics Product Characteristics NOTE Product characteristics specified in the table below are applicable for U1191A, U1192A, U1193A, and U1194A models unless stated otherwise. POWER SUPPLY Battery type: • 2 × 1.
U119XA UG.book Page 63 Thursday, September 15, 2011 4:03 PM Characteristics and Specifications Product Characteristics 4 MEASUREMENT CATEGORY CAT III 600 V and CAT IV 300 V (for digital multimeter and current clamp portions) ELECTROMAGNETIC COMPATIBILITY (EMC) • IEC61326-1:2005/EN61326-1:2006 • Canada: ICES/NMB-001: Issue 4, June 2006 • Australia/New Zealand: AS/NZS CISPR 11:2004 TEMPERATURE COEFFICIENT 0.
U119XA UG.book Page 64 Thursday, September 15, 2011 4:03 PM 4 Characteristics and Specifications Specification Assumptions WARRANTY Please refer to http://www.agilent.
U119XA UG.book Page 65 Thursday, September 15, 2011 4:03 PM Characteristics and Specifications Measurement Category 4 Measurement Category The Agilent U1190A Series Handheld Clamp Meters have a safety rating of CAT III, 600 V and CAT IV, 300 V. Measurement category definition Measurement CAT I are for measurements performed on circuits not directly connected to the AC mains. Examples are measurements on circuits not derived from the AC mains and specially protected (internal) mains- derived circuits.
U119XA UG.book Page 66 Thursday, September 15, 2011 4:03 PM 4 Characteristics and Specifications Electrical Specifications Electrical Specifications Specification assumptions are given on page 64. NOTE DC specifications Table 4-1 DC specifications Accuracy Function Range Test current Resolution U1191A U1192A U1193A U1194A Open voltage (where applicable) 60.00 V 0.01 V - 0.5% + 3 0.5% + 3 0.5% + 3 - - 600.0 V 0.1 V 0.5% + 3 0.5% + 3 0.5% + 3 0.
U119XA UG.book Page 67 Thursday, September 15, 2011 4:03 PM Characteristics and Specifications Electrical Specifications 4 Table 4-1 DC specifications (continued) Accuracy Function Continuity Range Test current Resolution 600.0 0.1 Open voltage U1191A U1192A U1193A U1194A (where applicable) 0.8% + 5 0.8% + 5 0.8% + 5 0.8% + 5 95 A 1.4 V Notes for continuity specifications: 1 Overload protection: 600 Vrms for short circuits with <0.
U119XA UG.book Page 68 Thursday, September 15, 2011 4:03 PM 4 Characteristics and Specifications Electrical Specifications AC specifications AC voltage specifications Table 4-2 AC voltage specifications Accuracy Range Resolution U1191A U1192A U1193A U1194A Input impedance 45 Hz to 500 Hz 60.00 V 0.01 V - 1.2% + 5 1.2% + 5 1.2% + 5 10 M 600.0 V 0.1 V 1.2% + 5 1.2% + 5 1.2% + 5 1.
U119XA UG.book Page 69 Thursday, September 15, 2011 4:03 PM Characteristics and Specifications Electrical Specifications 4 Table 4-3 AC current specifications (continued) Accuracy Range 600.0 A U1191A Resolution U1192A U1193A U1194A 45 Hz to 65 Hz 65 Hz to 500 Hz 45 Hz to 65 Hz 65 Hz to 500 Hz 45 Hz to 65 Hz 65 Hz to 500 Hz 45 Hz to 65 Hz 65 Hz to 500 Hz - - - - 2.0% + 5 3.0% + 5 2.0% + 5 3.0% + 5 0.
U119XA UG.book Page 70 Thursday, September 15, 2011 4:03 PM 4 Characteristics and Specifications Electrical Specifications Temperature specifications Table 4-5 Temperature specifications Accuracy Thermal type Range Resolution U1194A –40 °C to 400 °C 0.1 °C 1.0% + 2.0 °C 400 °C to 1200 °C 1.0 °C 1.0% + 2.0 °C –40 °F to 752 °F 0.1 °F 1.0% + 3.6 °F 752 °F to 2192 °F 1.0 °F 1.0% + 3.6 °F K K Notes for temperature specifications: 1 This function is only applicable for the U1194A model.
U119XA UG.book Page 71 Thursday, September 15, 2011 4:03 PM Characteristics and Specifications Electrical Specifications 4 Frequency specifications Table 4-6 Frequency specifications Accuracy Range Resolution U1191A U1192A U1193A U1194A 99.99 Hz 0.01 Hz 0.5% + 3 0.5% + 3 0.5% + 3 0.5% + 3 999.9 Hz 0.1 Hz 0.5% + 3 0.5% + 3 0.5% + 3 0.5% + 3 9.999kHz 0.001 kHz 0.5% + 3 0.5% + 3 0.5% + 3 0.5% + 3 99.99 kHz 0.01 kHz 0.5% + 3 0.5% + 3 0.5% + 3 0.
U119XA UG.book Page 72 Thursday, September 15, 2011 4:03 PM 4 Characteristics and Specifications Electrical Specifications For current measurements Table 4-8 Frequency sensitivity and trigger level specifications for current measurements Input range Minimum sensitivity (RMS sine wave) Maximum input for specified accuracy 45 Hz to 1 kHz 60 A 6.
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