Fluke 2638A User Manual Download Page 77

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2638A

Users Manual

4-4

•

The total channel sample time is the minimum sample time plus the user-

programmed channel delay. The longer the channel delay, the longer it takes to

sample the channel.

•

The total scan sweep time is sum of the channel sample times of all the channels

scanned. A scan sweep will start when the selected trigger source is asserted if a

previous scan sweep is not still in progress (see "Trigger Type" on page 4-6).

•

The interval at which scan sweeps occur can be fixed by programming the trigger

type to Timer and setting an interval time.

Channel List

SCAN START

Channel 102

Channel 104

Channel 115

Channel Delay Set

Channel 117

Channel Delay Set

Channel 121

- Sample Time*

Key:

*Consists of NPLC time, settling time, and ADC samples.

- Channel Delay

Sweep Time

SCAN FINISH

Sweep Time

Scan Cycle 1

Scan Cycle 2

Scan Interval

Remaining

Interval

Remaining

Interval

Remaining

Interval

hcn050.eps

Figure 4-2. Illustration of a Scan Sweep

Table 4-2. Settling Time Delay Values

Type and Range

Time Delay

100 mV dc

0 ms

1 V dc

0 ms

10 V dc

0 ms

100 V dc

100 ms

300 V dc

100 ms

ACV all ranges 20 Hz filter

400 ms

ACV all ranges 200 Hz filter

100 ms

A dc (all ranges)

0 ms

1.888.475.5235

[email protected]

Fluke-Direct

.com

Summary of Contents for 2638A

Page 1: ...n All rights reserved Specifications are subject to change without notice All product names are trademarks of their respective companies 2638A HYDRA Series III Data Acquisition Unit Users Manual 1 888 475 5235 info Fluke Direct com Fluke Direct com ...

Page 2: ...btain warranty service contact your nearest Fluke authorized service center to obtain return authorization information then send the product to that service center with a description of the difficulty postage and insurance prepaid FOB Destination Fluke assumes no risk for damage in transit Following warranty repair the product will be returned to Buyer transportation prepaid FOB Destination If Flu...

Page 3: ...aracteristics 1 14 DC Voltage Accuracy 1 14 DC Voltage Additional Errors 1 15 AC Voltage 1 15 AC Voltage Input Characteristics 1 15 AC Voltage Accuracy 1 16 Additional Low Frequency Errors 1 16 DC Current 1 16 DC Current Input Characteristics 1 16 DC Current Accuracy 1 17 DC Current Additional Errors 1 17 AC Current 1 17 AC Current Input Characteristics 1 17 AC Current Accuracy 1 18 Additional Low...

Page 4: ...d Channel Configuration 3 1 Introduction 3 1 Input Wiring 3 1 The Universal Input Module 3 1 Wiring Safety and Considerations 3 2 3 Wire and 4 Wire Sense Input Configuration 3 3 Input Types and Wiring Diagrams 3 5 Input Wiring Instructions 3 6 Channel Configuration 3 7 About Channel Numbers 3 7 Basic Channel Operations 3 10 Open the Channel Setup Menu 3 10 Set Channels to ON or OFF 3 11 Verify a C...

Page 5: ...wer Loss Scan Resume 4 10 Basic Scan Procedures 4 10 Start a Scan 4 10 View Scan Data and Statistics 4 11 Graph the Measurements 4 12 Monitor 4 13 Record 4 14 Record Measurement Data 4 14 Memory Consumption for Recorded Data 4 15 Open and View Measurement Data on a PC 4 15 How to Read the Setup CSV File 4 17 How to Read the Data CSV File 4 19 5 DMM Operation 5 1 Introduction 5 1 About the DMM Func...

Page 6: ...sers Manual iv User Replaceable Parts and Accessories 6 5 7 Error Messages and Troubleshooting 7 1 Introduction 7 1 Error Messages 7 1 Troubleshooting 7 17 1 888 475 5235 info Fluke Direct com Fluke Direct com ...

Page 7: ...equency Channel Configuration 3 20 3 8 Thermistor Channel Setup 3 21 3 9 PRT Channel Setup 3 22 3 10 Totalizer Channel Configuration 3 25 3 11 Math Channel Formulas 3 26 3 12 Math Channel Configuration 3 28 4 1 The Scan Menu 4 2 4 2 Settling Time Delay Values 4 4 4 3 Scan Sample Rates 4 8 4 4 Scan Statistics 4 12 4 5 Scan Data Memory Usage 4 15 5 1 Statistics 5 4 6 1 Fuses 6 1 6 2 Comparison of th...

Page 8: ...Channel Assignment 3 9 3 5 Channel Status Indicators 3 11 3 6 Zero Function 3 13 3 7 DIO Connector 3 23 3 8 Totalizer Input TOT 3 24 3 9 Rear Panel Alarm Outputs 3 31 3 10 Alarm Output Example 3 31 4 1 Scan Data 4 2 4 2 Illustration of a Scan Sweep 4 4 4 3 Test Setup Menu Example 4 6 4 4 Scan Data 4 11 4 5 Graph Feature 4 12 4 6 Monitor Menu 4 13 4 7 Scan Data File Name Convention 4 16 4 8 Setup c...

Page 9: ...h a timer an alarm an external source or a remote SCPI command While a scan is in progress all channel values can be viewed on the display in a spreadsheet format along with statistics such as average standard deviation minimum maximum peak to peak and rate of change With the Graph feature channel measurement data for up to four channels can be plotted and viewed on the display Users can toggle th...

Page 10: ...t is read Totalizer The Product is equipped with a unidirectional resettable totalizer with an input count capability of 1 048 575 20 bits Counter increment is accomplished through a change to a digital signal or contact closure to the totalizer input terminals on the rear of the Instrument Digital Multimeter Functionality DMM Function that presents the user with familiar DMM features and controls...

Page 11: ...d describes the rear panel features Table 1 1 Front Panel Features X 19 14 1 3 4 5 2 6 7 10 9 11 12 13 8 15 17 16 18 20 hce001 eps Item Name Function Standby Key Puts the Product in the standby mode In standby the display is off and the keys are disabled Standby mode also disables remote operation See Power ON and Standby in Chapter 2 1 888 475 5235 info Fluke Direct com Fluke Direct com ...

Page 12: ... is removed V Ω mA Input Terminals Input terminals that connect to test leads to measure ac and dc volts ac and dc milliamps hertz and ohms 4WΩ Sense Terminals Sense input terminals to make 3 wire and 4 wire compensated resistance measurements Channel Status Indicator Square green box that shows when a channel is set to ON When a channel is set to ON it is referred to as active Menu Name Name of t...

Page 13: ...el inputs See Chapter 5 for DMM operation instructions Instrument Setup Configure the Product Menu contains many user configurable settings to customize the Product See Configure the Product in Chapter 2 Channel Setup Configure and verify channels Channel Setup is the default menu that shows on the display when the Product is powered on See Chapter 3 for instructions on how to wire and configure a...

Page 14: ...erminal for the Totalizer feature See Totalizer Channel Configuration in Chapter 3 DIO Digital I O Input Ports Eight digital ports used to sense and output a digital 8 bit transistor transistor logic TTL value that can be displayed as the 8 bit TTL value and be recorded as the decimal equivalent Digital External Alarm Trigger Outputs Six digital outputs that can be used to trigger a digital extern...

Page 15: ... socket outlets and similar points of the low voltage MAINS installation CAT III Measurement Category III is applicable to test and measuring circuits connected to the distribution part of the building s low voltage MAINS installation CAT IV Measurement Category IV is applicable to test and measuring circuits connected at the source of the building s low voltage MAINS installation P Product confor...

Page 16: ...protective earth ground Disruption of the protective earth could put voltage on the chassis that could cause death Do not put the Product where access to the mains power cord is blocked Use only correct measurement category CAT voltage and amperage rated probes test leads and adapters for the measurement Use only cables with correct voltage ratings Do not use test leads if they are damaged Examine...

Page 17: ...osive gas vapor or in damp or wet environments Screen Capture Feature The Product can take a screenshot of the display and save it directly to the USB drive To take a screenshot of the display see Figure 1 1 1 Insert a USB drive in the front panel and wait for the USB Data Transfer Indicator to show solid red 2 Push and hold the PRINT or 0 key on the numeric keypad for 3 seconds and then release T...

Page 18: ... rear of the Product Chapter 7 supplies information on error messages and how to troubleshoot the Product The Product Manual Set The Product manual set includes This 2638A Users Manual that contains feature information operation instructions and basic user maintenance and troubleshooting information The Users Manual is translated into many languages The 2638A Safety Information is printed and cont...

Page 19: ... Panel IEC 61010 2 030 CAT II 150 V CAT II 250 V rms with maximum transient voltage of 1000 V peak These terminals are not intended for connection to mains voltage above 150 V without external transient suppression The maximum input that can be applied between rear module terminals or between any rear module terminal and earth ground is 250 V dc or ac rms Electromagnetic Compatibility EMC Internat...

Page 20: ...m absolute value average maximum minimum Triggers interval external trigger input alarm remote bus manual Battery life 5 years Memory Scan data RAM 75 000 readings with timestamp Data Setup flash memory 20 MB Non volatile memory life 5 years USB Host Port Standard 2 0 full speed Connector type Type A Function Memory File system FAT32 Memory capacity 32 GB USB Device Port Connector type Type B Clas...

Page 21: ...D Linearity 2 ppm of measurement 1 ppm off range Input Bias Current 30 pA at 25 C DC Voltage Input Characteristics Range Resolution Resolution Input Impedance Fast 4 Digits Medium 5 Digits Slow 6 Digits 100 mV 100 0000 mV 10 µV 1 µV 0 1 µV 10 MΩ or 10 GΩ 1 1 V 1 000000 V 100 µV 10 µV 1 µV 10 MΩ or 10 GΩ 1 10 V 10 00000 V 1 mV 100 µV 10 µV 10 MΩ or 10 GΩ 1 100 V 100 0000 V 10 mV 1 mV 100 µV 10 MΩ 1...

Page 22: ...rtz product whichever is less for any range Measurement Method AC coupled true rms Measures the ac component of input with up to 300 V dc bias on any range AC Filter Bandwidth Slow 20 Hz Fast 200 Hz Maximum Crest Factor 5 1 at full scale Additional Crest Factor Errors Crest factor 1 2 0 05 of full scale Crest factor 2 3 0 2 of full scale Crest factor 3 4 0 4 of full scale Crest factor 4 5 0 5 of f...

Page 23: ...01 0 005 50 kHz to 100 kHz 0 55 0 08 0 6 0 08 0 6 0 08 0 05 0 01 300 V 20 Hz to 20 kHz 0 1 0 05 0 11 0 05 0 11 0 05 0 01 0 005 20 kHz to 50 kHz 0 2 0 05 0 22 0 05 0 22 0 05 0 01 0 005 50 kHz to 100 kHz 0 55 0 27 0 6 0 27 0 6 0 27 0 05 0 03 Note For conducted disturbances on mains input 1 V from 10 MHz to 40 MHz add 0 02 of range For disturbances 3 V accuracy is unspecified Additional Low Frequency...

Page 24: ... 1 2 µA 0 002 of range 12 nA 4 0 02 0 014 of range 1 7 µA 0 014 of range 17 nA AC Current Input Protection 0 15 A 600 V resettable PTC Measurement Method AC coupled true rms dc coupled to the shunt no blocking capacitor AC Filter Bandwidth Slow 20 Hz Fast 200 Hz Maximum Crest Factor 5 1 at full scale Additional Crest Factor Errors Crest factor 1 2 0 05 of full scale Crest factor 2 3 0 2 of full sc...

Page 25: ...od Flexible counting technique AC coupled input using the ac voltage measurement function Settling Considerations When measuring frequency after a dc offset voltage change errors may occur For the most accurate measurement wait up to 1 second for the input blocking capacitor to settle Measurement Considerations To minimize measurement errors shield inputs from external noise when measuring low vol...

Page 26: ...e 18 C to 28 C 100 Ω 0 003 0 003 0 008 0 004 0 01 0 004 0 0006 0 0005 1 kΩ 0 002 0 0005 0 008 0 001 0 01 0 001 0 0006 0 0001 10 kΩ 0 002 0 0005 0 008 0 001 0 01 0 001 0 0006 0 0001 100 kΩ 0 002 0 0005 0 008 0 001 0 01 0 001 0 0006 0 0001 1 MΩ 0 002 0 001 0 008 0 001 0 01 0 001 0 001 0 0002 10 MΩ 0 015 0 001 0 02 0 001 0 04 0 001 0 003 0 0004 100 MΩ 0 3 0 01 0 8 0 01 0 8 0 01 0 05 0 002 Note For co...

Page 27: ...erature Display Resolution Source Current Slow Sample Rate Medium Fast Sample Rate 0 Ω to 400 Ω 0 001 C 0 01 C 1 mA 400 Ω to 4 kΩ 0 001 C 0 01 C 0 1 mA Thermistor Temperature Range 200 C to 400 C depending on the sensor Resistance Range 0 Ω to 1 MΩ Sample Rate Slow 10 PLC Medium 2 PLC Fast 1 PLC Thermistor Temperature Accuracy Accuracy specifications are for a 4 wire thermistor using medium or slo...

Page 28: ...ween points in the table Specifications do not include sensor accuracy The practical range of temperature measurement depends on the sensor Type Range Temperature Accuracy Fixed External CJC Internal CJC Channel 1 Ch x01 x20 Ch x01 x20 K 270 C to 1372 C 200 C 0 C 1000 C 0 28 C 0 10 C 0 14 C 0 41 C 0 15 C 0 20 C 1 60 C 0 62 C 0 64 C T 270 C to 400 C 200 C 0 C 200 C 400 C 0 27 C 0 10 C 0 08 C 0 08 C...

Page 29: ...51 C 0 41 C U 200 C to 600 C 200 C 0 C 400 C 0 25 C 0 10 C 0 08 C 0 37 C 0 15 C 0 11 C 1 48 C 0 63 C 0 40 C W 0 C to 2315 C 600 C 1200 C 2000 C 0 24 C 0 22 C 0 33 C 0 36 C 0 32 C 0 46 C 0 36 C 0 33 C 0 46 C Thermocouple Measurement Characteristics Range Temperature Display Resolution Slow Sample Rate Medium Fast Sample Rate 270 C to 2315 C 0 01 C 0 1 C Digital I O Absolute Voltage Range 4 V to 30 ...

Page 30: ...tage Range 4 V to 30 V Output Type open drain active low Output Logic Low 1 mA 0 V to 0 7 V Maximum Sink Current 50 mA Output Resistance 47 Ω 2638A 100 Universal Input Module General Measurement IEC 61010 2 030 CAT II 150 V on any range 250 V Max see safety notice in this manual under input protection Offset Voltage 2 µV 3 Wire Internal Resistance Mismatch 50 mΩ Basic CJC Accuracy 0 6 C 1 888 475 ...

Page 31: ...an illustration on how to set the voltage selector See Chapter 6 for instructions on how to change the fuse Each voltage selection requires a specific fuse See Table 2 1 Table 2 1 Fuses Voltage Selector Fuse Fluke Calibration Part Number 100 V 0 25 A 250 V slow blow 166306 120 V 0 25 A 250 V slow blow 166306 220 V 160 mA 250 V slow blow 4394437 240 V 160 mA 250 V slow blow 4394437 WCaution To prev...

Page 32: ...2638A Users Manual 2 2 1 2 hce016 eps Figure 2 1 Fuse Replacement and Line Voltage Selection 1 888 475 5235 info Fluke Direct com Fluke Direct com ...

Page 33: ...e the mains power cord if the insulation is damaged or if the insulation shows signs of wear Make sure the ground conductor in the mains power cord is connected to a protective earth ground Disruption of the protective earth could put voltage on the chassis that could cause death Do not put the Product where access to the mains power cord is blocked WCaution To prevent damage to the Product make s...

Page 34: ...dle positions and also shows how to remove and install the handle and the protective rubber boots Carrying Position Viewing Position Alternate Viewing Position Removal Position to Remove Pull Ends Out To Remove Pull End From Unit 4 5 Boot Removal 6 2 1 3 hce007 eps Figure 2 3 Handle Positions and Boot Removal 1 888 475 5235 info Fluke Direct com Fluke Direct com ...

Page 35: ...self check This self check can take up to 2 minutes to complete and if the Product detects any errors an error message is shown on the display that contains the error description along with an error code to help troubleshoot the problem see Error Messages in Chapter 7 Once the Product is powered on use the Standby key to put the Product in standby When in standby the display keys and functions are...

Page 36: ...the menu items and selections available in the Instrument Setup menu Table 2 2 Instrument Setup Menu Menu Item Description Selections Available Language Changes the display language Note If the incorrect language is set by accident push then push This temporarily resets the language to English English 中文 Français Deutsch Portugués Español Русский 日本語 한국어 Firmware Shows the firmware version install...

Page 37: ...along with the name serial number and calibration date of the Input Module Input Module and Relay Card Installation Before an Input Module can be inserted into the rear panel a relay card must be installed Use the procedure below and refer to Figure 2 6 as necessary to install the relay card 1 Power off the Product with the main power switch 2 Remove the six screws that secures the plastic frame t...

Page 38: ...wer switch 4 Verify that the module indicator appears green on the main screen see Figure 2 5 Note If the module indicator is not green the Product did not recognize the Input Module or relay card Refer to the troubleshooting section in Chapter 7 Channel List Slot 1 Slot 2 Empty Module Installed Slot 3 Empty hce031 eps Figure 2 5 Module Indicator Example 1 888 475 5235 info Fluke Direct com Fluke ...

Page 39: ...Initial Setup and Configuration Input Module and Relay Card Installation 2 2 9 1 2 3 5 hcn037 eps Figure 2 6 Relay Card Installation 1 888 475 5235 info Fluke Direct com Fluke Direct com ...

Page 40: ...e User profiles The User profiles sole purpose is to produce secure data files that are traceable back to the user who performed the test commonly referred to as test traceability See Chapter 4 for more information Note The user profile names are fixed and cannot be changed The Product ships from the factory with a default Admin password of 2638 To change the Admin or User profile password 1 Push ...

Page 41: ...ule has 22 analog channels ChX01 through ChX20 that can be configured to measure dc volts ac volts resistance frequency and temperature and two low burden current channels ChX21 and ChX22 that can be configured to measure ac and dc current without the use of an external shunt resistor Note To expand the functionality of the Product current sources can also be connected to channels ChX01 through Ch...

Page 42: ...ock hazard if any channel is connected to a hazardous voltage source Do not remove touch or change the internal wiring of hazardous inputs until the input source is turned off Remove inputs from hazardous voltage sources before an input module is opened Use the correct terminals function and range for measurements Make sure proper insulation is maintained between channel wiring terminations and th...

Page 43: ...tors platinum resistance thermometers PRTs and resistors use a 3 wire or 4 wire sense connection to eliminate lead wire resistance errors For 2 wire measurements the wires can be connected to either the source or sense channels ChX01 through ChX20 For 3 wire or 4 wire resistance measurements the source wires must be connected to channels ChX01 through ChX10 and the sense wires to the set of termin...

Page 44: ...ved 3 Wire or 4 Wire Function Sense wires connected directly across from source on Channel 116 Note For 3 Wire connections leave the H sense open hce026 eps Figure 3 2 3 Wire and 4 Wire Channel Reservation 1 888 475 5235 info Fluke Direct com Fluke Direct com ...

Page 45: ... 2 Wire or 4 Wire 3 Range 0 Ω to 100 MΩ Page 3 18 H L R 2 Wire H Source Sense L R 4 Wire H L H Source Sense L R 3 Wire H L Platinum Resistance Thermometer PRT 2 Wire 3 Wire or 4 Wire Types PT385 or PT392 R0 0 09 Ω to 1 2 kΩ Page 3 22 Thermistor 2 Wire or 4 Wire Types 2 252 kΩ 5 kΩ 10 kΩ Page 3 20 Thermocouple Types B C D E G J K L M N R S T U W Page 3 19 H L Note 1 Each Input Module has two termin...

Page 46: ...inals directly across from the source wires See Sense Input Configuration on page 3 3 5 Route the wires through the strain relief pins then out the back of the Input Module If necessary the rubber wire compressor used to secure the wires can be removed for more room 6 Close the Input Module cover and rotate the cover locks to the locked position 7 Align the Input Module on the guide rails and care...

Page 47: ... slot number the Input Module is in 1 2 or 3 followed by the number of the terminal the input is connected to 1 to 22 as illustrated in Figure 3 4 The front panel inputs are permanently assigned to channel Ch001 Here are some examples on how to determine the channel number of an input A voltage source is connected to input terminal 4 04 in the Input Module and then slid into slot 1 The channel is ...

Page 48: ...lable on 2638A 05 Input Channel rear panel slot 1 Ch101 to Ch122 Input Channel rear panel slot 2 Ch201 to Ch222 Input Channel rear panel slot 3 Ch301 to Ch322 Digital I O Channel Ch401 See Digital I O Channel Configuration Ch401 on page 3 23 Totalizer Channel Ch402 See Totalizer Channel Configuration Ch402 on page 3 24 Math Channel Ch501 to Ch520 See Math Channel Configuration Ch501 to Ch520 on pa...

Page 49: ...ot Channel 301 322 Channel 001 Rear View Front View Input Module Terminal Number Channel 104 Rear Panel Slot hce014 eps Figure 3 4 Example Channel Assignment Note Channels 201 to 222 and 301 to 322 and relay slots 2 and 3 are not available on 2638A 05 1 888 475 5235 info Fluke Direct com Fluke Direct com ...

Page 50: ...re connected and registered The top indicator is slot 1 the middle indicator is slot 2 and the bottom indicator is slot 3 When a module is in a slot the indicator is green When a slot is empty the indicator is white Channel status When ON the channel can be configured and the channel status indicator to the left of the channel is green When OFF the channel information is not shown and the channel ...

Page 51: ...nput the associated channel must be set to ON and configured When a channel is set to ON it is referred to as active The channel indicator appears green when set to ON and white when set to OFF as shown in Figure 3 5 To set a channel to ON push then push Push again to set the channel to OFF Channel Status Indicators Green ON White OFF hce018 eps Figure 3 5 Channel Status Indicators When a channel ...

Page 52: ...surement and zero the channel if necessary See Zero a Channel Zero a Channel In certain applications it may be necessary to zero the channel in order to make measurements without unwanted offsets or noise levels The zero channel function is located in the Verify Channel menu that is accessed by a softkey in the Channel Setup menu The Product uses the Mx B offset value to zero a channel To do this ...

Page 53: ... Relative Measurement Value Baseline Measurement Zero Function Softkey Mx B Indicator hcn052 eps Figure 3 6 Zero Function Copy a Channel The Product has a copy and paste function to help duplicate channels When a channel is duplicated all of the channel configuration settings are copied and pasted to a new channel number The copy channel softkey in located in the Channel Setup menu Note When a cha...

Page 54: ... USB drive To save Setup files to a USB drive save the file to the internal memory then copy it to the USB drive To load a Setup file from a USB drive copy the file to internal memory then load the file See the instructions below The Product will not load a Setup file if the present configuration does not match the configuration in the Setup file This is caused by missing Input Modules Match the c...

Page 55: ...Files then push 4 Use and to highlight the Setup File 5 Push to load and use the Setup File To load a Setup File from a USB drive 1 Insert a USB drive into the front panel USB port Note Wait 15 seconds to let the Product recognize the USB drive 2 Push 3 Push to select USB Files 4 Choose Setup Files then push 5 Use the and keys to select the file to be copied 6 Push to manage the file 7 Push to cop...

Page 56: ...he previous configuration for channels previously configured A channel can be configured with the Edit Channel softkey in the Channel Setup menu Each channel has independent channel options such as Channel Delay Rate of Change NPLC and Input Impedance that can be accessed with the Channel Options softkey in the Edit Channel menu The channel options listed vary based on the on the input type After ...

Page 57: ...to ChX01 through ChX20 by the use of an accessory shunt resistor See Chapter 2 for part number and ordering information Table 3 4 Current and Voltage Channel Configuration 1 2 3 4 5 hcn042 eps Item Function DC voltage AC voltage DC current or AC current function selection For voltage set the voltage range to Auto 100 mV 1 V 10 V 100 V or 150 V Ch001 can be set to 300 V For current set the current ...

Page 58: ...e resistance measurement connection See Sense Input Configuration on page 3 3 Set the range to Auto 100 Ω 1 kΩ 10 kΩ 100 kΩ 1 MΩ or 10 MΩ Ch001 can be set to 100 MΩ Input a custom alpha numeric label to help identify the channel optional Set an alarm for this channel optional See HI and LO Channel Alarms on page 3 30 Apply Mx B scaling to the measurement optional See Mx B Scaling on page 3 29 1 88...

Page 59: ...n 1 2 3 4 5 hce021 eps Item Function Thermocouple function selection Select the thermocouple type Input a custom alpha numeric label to help identify the channel optional Set an alarm for this channel optional See HI and LO Channel Alarms on page 3 30 Apply Mx B scaling to the measurement optional See Mx B Scaling on page 3 29 1 888 475 5235 info Fluke Direct com Fluke Direct com ...

Page 60: ...4 1 hce044 eps Item Function Frequency function selection Input a custom alpha numeric label to help identify the channel optional Set an alarm for this channel optional See HI and LO Channel Alarms on page 3 30 Apply Mx B scaling to the measurement optional See Mx B Scaling on page 3 29 1 888 475 5235 info Fluke Direct com Fluke Direct com ...

Page 61: ...t the thermistor type Types available 2 252 kΩ 5 kΩ and 10 kΩ Set up the channel for a 2 wire measurement connection See Sense Input Configuration on page 3 3 Input a custom alpha numeric label to help identify the channel optional Set an alarm for this channel optional See HI and LO Channel Alarms on page 3 30 Apply Mx B scaling to the measurement optional See Mx B Scaling on page 3 29 1 888 475 ...

Page 62: ...5 and PT 392 Set the PRT resistance value at 0 C Set up the channel for a 2 wire 3 wire or 4 wire measurement connection See Sense Input Configuration on page 3 3 Input a custom alpha numeric label to help identify the channel optional Set an alarm for this channel optional See HI and LO Channel Alarms on page 3 30 Apply Mx B scaling to the measurement optional See Mx B Scaling on page 3 29 1 888 ...

Page 63: ...mal equivalents are shown below 11111111 is represented by decimal 255 00001111 is represented by decimal 15 00010001 is represented by decimal 17 10000101 is represented by decimal 133 Notes For input and output specifications such as input and output voltages see Digital I O in Chapter 1 The DIO channel will be read only when it is set to ON active With a remote command the Product can output an...

Page 64: ... read mode the count is not effected when read during the scan sweep or read by remote command In read reset mode the totalizer count is automatically reset to 0 when it is read during a scan sweep or read by remote command It is not effected by pause scan The totalizer count is not reset when it is viewed with the Monitor function Debounce In some applications contacts can bounce when they close ...

Page 65: ... 10 If the channel was previously configured push to cancel the configuration sequence to use the last channel configuration 3 Use the information in Table 3 10 to configure the totalizer channel Push or to highlight the channel setting then push to edit the setting 4 To see the totalizer count monitor Ch402 in the Scan Monitor menu Table 3 10 Totalizer Channel Configuration 1 2 3 hce054 eps Item ...

Page 66: ...unction of an input channel Table 3 11 Math Channel Formulas Formula Equation Description Polynomial C6A 6 C5A 5 C4A 4 C3A 3 C2A 2 C1A C0 Calculates a polynomial expression of up to sixth order Coefficients may be set to arbitrary constants A polynomial of order less than six is created by setting high order coefficients to 0 Square Root A Calculates the square root function The argument must be a...

Page 67: ...L Average 1 A1 A2 A3 N Calculates the arithmetic mean of the readings of selected channels Maximum 1 N A Finds the maximum reading among selected channels Minimum 1 N A Finds the minimum reading among selected channels Sum 1 A1 A2 A3 Calculates the sum of the readings of selected channels Note 1 Maximum of 10 channels can be calculated Set up a math channel as follows see Table 3 12 1 Connect and ...

Page 68: ...m math formula only combines two channels Some formulas have only one source channel while some others allow more than two source channels Set the unique unit to be associated with the measurement value Input a custom alpha numeric label to help identify the channel optional Set an alarm for this channel optional See HI and LO Channel Alarms on page 3 30 Apply Mx B scaling to the measurement optio...

Page 69: ...he gain is calculated the B value or the offset is added to the resultant For example if a channel measures a voltage of 3 volts and the gain was set to 3 3 the measurement on the display would read 9 9 volts 3 V 3 3 gain 9 9 V Now the offset is added to the gain If the offset was set to 11 0 it would be added to the 9 9 volts and the display would read 20 9 volts 9 9 V 11 0 offset 20 9 V More exa...

Page 70: ...et values See the examples in this section Temporarily set the gain to 1 and the offset to 0 to verify that the measurements are in the expected range Unexpected measurements could result from a wiring error or the wrong range or function selected HI and LO Channel Alarms Each channel has two channel alarms that can have custom values assigned to trip when a channel measurement exceeds the assigne...

Page 71: ...h Terminal GND 1 2 3 4 5 6 TRIG Function Ground Terminal Alarm Output 1 Alarm Output 2 Alarm Output 3 Alarm Output 4 Alarm Output 5 Alarm Output 6 External Trigger Input hcn041 eps Figure 3 9 Rear Panel Alarm Outputs Low Condition 0 7 V dc Alarm Setup Lower limit exceeded alarm output 3 outputs 0 7 V dc Monitor Screen Rear View Alarm output 3 low limit set to 2 V dc Alarm Indicator hcn035 eps Figu...

Page 72: ...tistical calculation that shows the user how much a measurement value has changed over a period of time The Rate of Change is viewed in the statistics graphing area in the Scan Menu The Rate of Change setting in the Channel Options menu sets the scaling to per second s or per minute min Note Per minute min is the default scaling selection unless otherwise changed To determine the rate of change th...

Page 73: ...setting can be manually increased so that the Product samples the ac noise signal over multiple cycles to get a better average of the signal In summary when higher NPLC settings are set the measurement value is more accurate but the tradeoff is that it takes longer for the Product to complete the measurement see About Scan Timing and Sampling in Chapter 5 For applications where ac noise will not a...

Page 74: ...t the active scan and only shows the measurement data from the last scan cycle completed In order for the Product to scan the applicable channels need to be active and the unit under test UUT must be connected and ready After these steps are complete a scan can be started from the Scan Monitor menu If Auto Recording in the Test Setup menu is set to ON the Product automatically records the scan dat...

Page 75: ...the scan Table 4 1 shows the Scan menu and describes the status indicators and functions that can be performed from this menu To open the Scan menu push on the front panel Table 4 1 The Scan Menu 1 5 4 3 6 7 8 9 10 11 2 hce055 eps Item Function Shows the type of trigger configured in the Test Setup The trigger type determines when a scan starts and stops See Trigger Type on page 4 6 1 888 475 5235...

Page 76: ...atistics on page 4 11 Pause a scan after it is started The softkey is not visible when the scan is inactive Start or stop a scan See Start a Scan on page 4 10 About Scan Timing and Sampling When a scan is started the Product sequentially scans and measures samples each active channel in ascending channel order How long it takes to sample a channel depends on the measurement function the user progr...

Page 77: ...o Timer and setting an interval time Channel List SCAN START Channel 102 Channel 104 Channel 115 Channel Delay Set Channel 117 Channel Delay Set Channel 121 Sample Time Key Consists of NPLC time settling time and ADC samples Channel Delay Sweep Time SCAN FINISH Sweep Time Scan Cycle 1 Scan Cycle 2 Scan Interval Scan Interval Remaining Interval Remaining Interval Remaining Interval hcn050 eps Figur...

Page 78: ... s 100 MΩ 1 s Thermocouple all types 0 ms PRT 400 Ω 0 ms PRT 4 kΩ 100 ms Thermistor 2 kΩ 500 ms Thermistor 90 kΩ 500 ms Thermistor 1 MΩ 1 s Configure a Scan Scans are configured in the Test Setup menu that is opened in the Channel Setup menu push then push This section contains information on each parameter in the Test Setup menu to help configure the scan Figure 4 3 shows the Test Setup menu 1 88...

Page 79: ...The External trigger type set the scan to start when a set TRIG input on the Digital I O port detects a low condition Like Interval the user manually sets the number of times to scan Scan Count and the time between the scans Interval The Alarm trigger type sets the scan to start when a HI or LO channel alarm is tripped on a monitored channel Like Interval the user manually sets the number of times...

Page 80: ...n data files on the USB drive connect the USB drive to a PC and open the folder named Scan Data See Open and View Measurement Data on a PC on page 4 15 Sample Rate The Sample Rate sets the speed the channels are scanned When set to Fast the Product scans each channel very quickly that lets the user monitor the channels for rapid measurements changes As a result of the quicker scan speed the Produc...

Page 81: ... the data security setting in the Test Setup menu is set to ON the user must select a user profile and enter the associated password in order to start and record a scan The user information is recorded into the scan data file that contains the user profile number and test information For more information on the scan data files see Record on page 4 14 For instructions on how to change the Admin or ...

Page 82: ... fully calibrated is put into a chamber with other probes that reads 250 52 C With the align function the user sets the calibrated reference probe channel to be the reference channel The user then sets four probes channels to be aligned with that reference that currently read 250 52 C 250 68 C 250 71 C 250 33 C When the user aligns the probes the Product calculates and applies an Mx B offset to th...

Page 83: ...nel Setup or the Instrument Setup menu can be accessed 1 Configure the Test Setup See Configure a Scan on page 4 5 2 Set all channels to be scanned to ON See Set Channels to ON of OFF in Chapter 3 3 Push 4 Start the scan as follows For the Interval trigger type Push to start the scan The scan completes the amount of scan cycles set then automatically stops At any time push again to stop the test o...

Page 84: ... Push to start the scan The scan performs one scan cycle then stops Push again to trigger another scan cycle At any time push again to stop the test or push to pause the test If automatic recording is set to OFF push to record data View Scan Data and Statistics The Scan Data feature lets the user see the scan data from the last scan sweep see Figure 4 4 This feature is located in the Scan menu pus...

Page 85: ...lets the user display the measurement data in a graph This feature is located in the Scan menu push then push The graph automatically scales to fit all the information on the display when opened To refine the data the graph can be manipulated with the front panel arrow keys as shown in Figure 4 5 Notes The maximum number of channels that can be graphed at once is four Selection of two or more chan...

Page 86: ... of the measurement data since the scan began To monitor a channel push on the Scan menu When a scan is in progress the display shows the measurement from the last reading If a scan is not in progress the display shows a real time measurement MONITOR MONITOR MONITOR hcn046 eps Figure 4 6 Monitor Menu To monitor a channel 1 Set all channels to be scanned to ON See Set Channels to ON or OFF in Chapt...

Page 87: ...n the scan is started If set to OFF the user must manually push to record scan data to file after the scan is started Note Auto Recording is associated only with the Scan Monitor function and does not work with the DMM function To record a DMM measurement push to start recording DMM data regardless of the Auto Recording setting in the Test Setup menu Each time a scan or a DMM measurement is record...

Page 88: ...red to a PC where the results can be viewed in Microsoft Excel To open the a data file on a PC 1 Put the data on the USB drive to be transferred to the PC If the Data file is on the internal memory copy the file to the USB drive If the scan was set up to record directly to the USB the data file is already on the USB drive and no action is necessary 2 Remove the USB drive from the front panel and i...

Page 89: ...i seconds hcn039 eps Figure 4 7 Scan Data File Name Convention 6 Choose a file to open then double click on the file The time stamped data folder contains two comma separated values csv files setup csv and dat00001 csv The setup csv file contains all the test parameters that were configured when the data was recorded The dat00001 csv contains all of the recorded measurement data See Figure 4 8 Not...

Page 90: ...in the subsequent sections General Information This section of the spreadsheet shown below contains general information on the scan performed such as the start time and the Operator Instrument Information This section of the spreadsheet shown below contains general information on the Product such as the serial number and last calibration date This section also shows the Input Module configuration ...

Page 91: ... spreadsheet shown below contains configuration information for the DIO channel and the TOT channel Math Channels This section of the spreadsheet shown below contains configuration information for the math channels Test Setup Parameters This section of the spreadsheet shown below contains the test setup settings that were used to run the scan 1 888 475 5235 info Fluke Direct com Fluke Direct com ...

Page 92: ...sweep and shows the time when the sweep completed To see how the test and channels were configured view the information in the setup csv file see How to Read the Setup csv File All measurements can easily be toggled to engineering notation with the cell formatting options within Microsoft Excel An example of the spreadsheet is shown below 1 888 475 5235 info Fluke Direct com Fluke Direct com ...

Page 93: ...be recorded to file These recorded files are referred to as DMM Data files The DMM feature is easily accessed and configured with the DMM key on the front panel Note The DMM function is an individual function of the Product that does not read or share configuration information with channel 001 in the channel list For example use of the DMM feature does not automatically configure and set channel 0...

Page 94: ...92 1 Push 2 Push to show Channel Options 3 Push to show More Functions 4 Push or to select PT385 or PT392 5 Follow the onscreen directions to complete the configuration Relative Measurements The DMM feature has a relative function that lets the user make relative measurements A relative measurement is the difference above or below a baseline measurement value To make a relative measurement a measu...

Page 95: ...raph The graph has features such as History mode and Live mode to let the user evaluate the data on the display The graph automatically scales to fit all the information on the display when opened To refine the data the graph can be manipulated with the arrow keys as shown in Figure 5 4 Range Time Stamps History or Live Mode Toggle Grid Graph Controls Front Panel Keys Zoom Out Zoom In Move Right i...

Page 96: ...hcn049 eps Figure 5 5 DMM Statistics Table 5 1 Statistics Statistic Description Maximum Maximum measurement Minimum Minimum measurement Average Average of all the measurements taken Standard Deviation A measure of the distribution of a set of data from its mean The more spread apart the data the higher the deviation Sample Size The number of readings used in the statistical calculations Rate of Ch...

Page 97: ... Each voltage selection requires a specific fuse See Table 6 1 XWWarning To prevent possible electrical shock fire or personal injury use only specified replacement parts Table 6 1 Fuses Voltage Selector Fuse Fluke Calibration Part Number 100 V 0 25 A 250 V slow blow 166306 120 V 0 25 A 250 V slow blow 166306 220 V 160 mA 250 V slow blow 4394437 240 V 160 mA 250 V slow blow 4394437 To replace the ...

Page 98: ...nctions require the Admin password to accomplish Table 6 2 Comparison of the Memory Clear Functions Task Clear All Files Factory Reset Deletes Test Setup files DMM Data files and Scan Data files from the internal memory 1 Clears the configuration of the Channel Setup Test Setup and Instrument Setup 2 Notes 1 Does not remove data from the USB drive 2 Does not reset the MAC address the serial number...

Page 99: ...at use version 1 03 and above WCaution Do not cycle the power or remove the USB device while the firmware update is in process These actions will cause an instrument failure during the update process and require a return to a Fluke Calibration Service center to correct The Product automatically re boots when the update process is complete Updates can take several minutes to complete and the displa...

Page 100: ...ives may not be recognized by the Product Test the USB flash drive prior to starting this update process to ensure it is recognized 4 Push to enter the Setup menu 5 Push the Up Down arrow button to select Firmware then push to enter the firmware menu 6 Push and enter the administrator password and then push to start the update process 7 WAIT until the Product automatically re boots There will be n...

Page 101: ...B Drive 4 GB 1 4396147 884X ETH Ethernet Interface Cable 1 Meter 1 3980562 TL71 Test Lead Set 1 4281980 Protective Rubber Boot front 1 4281971 Protective Rubber Boot rear 1 4281998 Handle 1 4374731 Protective Slot Cover 1 166306 W Fuse 0 25A 250V slow blow 2 1 4394437 W Fuse 0 160 mA 250V slow blow 2 1 4410418 Relay Card 1 1 4410452 2638A 100 Universal Input Module 1 1 Notes 1 Quantity of items li...

Page 102: ...he fuse blows a second time it is likely caused by failure of a component part Cause 1 Power Cord Solution 1 Check that the power cord is plugged in and connected to the Product Cause 2 AC mains power Solution 2 Make sure the circuit that supplies power to the Product is on Cause 3 Power entry is not properly set Solution 3 Make sure the power entry setting is matching with the AC mains power supp...

Page 103: ...olution 3 Replace the USB drive Cause 4 USB drive inoperative or damaged Solution 4 Replace USB drive Product does not start to scan after the scan is started Cause 1 The Product is waiting to be triggered Solution 1 Check the trigger type in the test setup and make sure the trigger is properly configured Product does not record when I start a scan Cause 1 The Auto Recording feature is not turned ...

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Fluke 2638A, User Manual

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