DIGITAL MULTIMETER

DM2571DMM VIEWER 2 USER MANUALNF Corporation

DA00081292-002

DMM Viewer 2DM2571

USER MANUAL

ISO-9001 CERTIFIED MANUFACTURER

This manual contains proprietary information, which is protected bycopyrights. All rights are reserved. No part of this manual may be
photocopied, reproduced or translated to another language without
prior written consent of NF Corporation.
The information in this manual was correct at the time of printing.
However, NF Corporation continues to improve products andreserves the right to change specifications, equipment, andmaintenance procedures at any time without notice.

Table of Contents

TABLE OF CONTENTSINTRODUCTION ........................................................................................4SETUP ..........................................................................................................5
Wire Connection............................................................................. 5
Installation ...................................................................................... 8
Uninstallation ............................................................................... 10
Configuration................................................................................ 12
MEASUREMENT .......................................................................................14
GRAPH DISPLAY MODE ..........................................................................19
Trend Chart ................................................................................... 19
Histogram..................................................................................... 25
VERSION ...................................................................................................28

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DM2571 DMM-Viewer 2 USER MANUALINTRODUCTION
The DM2571 DMM-Viewer 2 USER MANUAL is intended for showing how touse the remote viewer PC software, DMM Viewer2, on Windows OS based
computers (Windows 7 32bit or 64bit, Windows 8 32bit or 64bit, Windows 1032bit or 64bit supported).
This manual consists of the following chapters.
Setup: Connection, Installation, Uninstallation, Configuration

Measurement: Measurement procedure and configuration settingsGraphic Display Modes: Trend Chart and Histogram display modesVersion: Accessing the software version of DMM Viewer 2Software
overview

The software contains the following functions.

4

Making measurements in real-timeDisplaying measurement result in real-timeStoring and loading measurement data

Spreadsheet, Trend Chart and Histogram displays

SETUP

SETUP
Wire Connection
Read the following instructions regarding how to set up remote interface on
DM2571 and method of cable connection when operating DMM Viewer 2 inconjunction with the DM2571.
Note

There are several interfaces (RS-232, USB, LAN,GPIB) to connect DM2571 and DMM Viewer 2.
The following procedure describes an example of
USB connection configuration and procedure foryour reference.

1. Configure theDM2571 to USB
interface

1. Press the Menu key, and thenthe Page Down key repeatedly
until the Interface
configuration menu appears.

2. Press the F5 (Enter) key or Knob
key followed by scrolling Knob
key or pressing +/- keys to landon the USB option.

5DM2571 DMM-Viewer 2 USER MANUAL

3. Press the F5 (Enter) key or
Knob key to select the USBoption.

4. Press the F4 (NEXT) key
repeatedly or scroll the Knob
key to move to the USB Protocol field.

5. Press the F5 (Enter) key or
Knob key followed by scrolling
Knob key or pressing +/- keys
to land on the desired USB
Protocol option. We adopt
USB-CDC in the example here.

6

SETUP

6. Press the F5 (Enter) key or
Knob key again to confirm theUSB Protocol option.

2. Connect theUSB cable

1. Connect the one end of USB cable (USB Type B) tothe corresponding port on the rear panel of DM2571
for connection.
USB Type B porton the rear panel

2. Connect the other end of the USB cable (USB TypeA) to the corresponding port on the host PC.

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DM2571 DMM-Viewer 2 USER MANUAL

Installation
There are 2 software, NI VISA and Microsoft .NET Framework, required tobe installed onto the host PC prior to DMM Viewer 2 software installation.
Further, another two items from the CD, the USB driver, which is required
when USB interface is utilized, and DMM Viewer 2 software, need to beinstalled onto the host PC in order for running the software properly.
1. Preparation

The 2 software listed below are required prior to DMM
Viewer 2 installation. Please make sure that you haveinstalled them before DMM Viewer 2 installation.
 NI VISA RunTime or Full Version 14.0 or later Microsoft .NET Framework 4 or later

2. Installing theUSB driver

If using other interfaces (GPIB, RS-232, LAN) rather
than a USB connection, this section (Installing the USBdriver) may be skipped.
1. Configure the interface of DM2571 toUSB option.

Page 5

2. Connect the USB cable from theDM2571 rear panel USB port to thehost PC.

Page 7

3. The DM2571 will be recognized as new hardware.
Follow the Windows Installation Wizard to install theUSB driver (NF_DM-Series_USB_CDC_Driver.inf)from the CD, located in the USB_DRIVER directory.
Note

The PC may need to be restarted once the driver isinstalled.

3. Installing DMM 1. Go to the directory where the downloaded file (NFViewer 2
DMM-Viewer2 Vnnn.exe) is located.
2. Click on the NF DMM-Viewer2 Vnnn.exe8

SETUP

3. The installation wizard will start up. Follow thedirections of the installation wizard. When choosing
an install location it is recommended that thedefault location is chosen.
The default location of the software is C:\Program
Files (x86)\NF Corporation\DMM-Viewer2
A program icon should be available from the StartMenu.

Note

To check the software version please see page 28.

9DM2571 DMM-Viewer 2 USER MANUAL

Uninstallation
Follow the procedures described in this section when the DMM Viewer 2
software needs to be removed.
1. Uninstall theDMM Viewer2
from Start Menu

1. Click on Uninstall DMM-Viewer2 under the default
folder of NF Corporation from Start Menu.

2. Click on Yes from the prompt message showing“Are you sure you want to uninstall this product?”

3. The uninstalling process will proceed automatically
until complete finish.
2. Uninstall theDMM Viewer2from Control
Panel

10

1. Press Control Panel from the Windows Start menu.

SETUP

2. Click Programs and Features option.

3. Select DMM-Viewer2 followed by pressing theUninstall button.

4. Follow the instructions step by step to complete theuninstalling process.

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DM2571 DMM-Viewer 2 USER MANUAL

Configuration1. Configure thehost PC

1. Before making sure the DMM is recognized by thePC, open the Device Manager (Start > Control Panel> (System) > Device Manager. If using USB, the USB
driver, NF_DM-Series CDC, should be listed in the“Ports” section.
2. Check which COM port the USB driver connection isassigned to.

3. To see the baud rate of the connection, right click
the NF_DM-Series CDC and select Properties.

4. Click the Port Settings tab and check the baud rateof the connection.

2. Configure DMM 1.
Viewer 2

12Activate the DMM-Viewer2 from the Start Menu.

2.

Click on the System(S) tabfrom the top Tool Bar andopen the Connect dialog.

3.

Select the target interface from the dropdown menu
of VISA Name. We choose COM5, which
represents the USB-CDC connection between thehost PC and DM2571, for this example.

SETUP

4. Further select the Baud Rate option whichcorresponds to the setting on the host PC followed
by clicking Connect to establish the connection.

5. The VIS TimeOut allows user to define a period before
timeout. From the figure below where the default
3000ms indicates if there’s no response from theDM2571 over the set 3000ms (max. 60000ms), themeasurement will be halted accordingly.
If ticking the checkbox of Reset, DM2571 will
restore to the default setting before measurement.
If not ticking it, the measurement will begin withthe last time setting on DM2571.

6. After clicking Connect, the successful message willappear in the bottom line of DMM-Viewer2.

7.

Move on to the Measurement chapter (page 14).

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DM2571 DMM-Viewer 2 USER MANUALMEASUREMENT
1. Establish
remoteconnection

Follow the procedures for wire connection andconfiguration from the page 5 to 12.

2. Top bar
setting

Open the dropdown menu of Modefrom the top bar. Select either View,
which allows user to view
measurements only without saving
logs, or DataLog, which conversely
permits user to not only view but savethe data logs simultaneously.
Select log unit options in which Autochanges measured unit properly
adaptive per each measured count,whilst Fix simply locks measured unit
within the basic unit per measuringfunctions. See the examples below.
Auto Log Unit – DC Voltage

Fix Log Unit – DC VoltageIn theory, the interval of each measured count isdetermined by the Speed option. However, it is available
for user to customize preferable interval by inputting
hour, minute and second fields respectively here.

14MEASUREMENT

3. Measurement
Setup field

The functions within the Setup field of DMM Viewer 2
software are almost identical to the functions of front
panel keys on the DM2571. Refer to the DM2571 User
Manual for more specific details when necessary.

Primary
Display

Select measurements from theFunction menu and define theaffiliated parameters like Range,Speed, Auto Zero, Input R, etc.
The available parameter options
vary by measuring functions

Secondary
Display

Identical with the above Primary
Display section, the Secondary
Display setup allows user tooperate dual displays
measurement.

REL

The REL section indicates Relative
function where user can enable iton 1ST, 2nd or both displays. Tick theAuto checkbox to auto define
Relative value, while input value
into the field to manually set up.

MathSeveral functions of Math can beoperated here as well. The
available parameters for user todefine vary by each function.

FilterSet types (MOV, REP) of Filterand count number in this section
for 1st, 2nd or both displays.

TriggerDefine Trigger Delay time for 1stand 2nd displays, respectively, byinputting value manually. Tickthe checkbox of Trigger Auto toactivate auto triggering function.

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DM2571 DMM-Viewer 2 USER MANUAL

4. Startmeasurement

After selecting the measurement functions, clickon the Blue arrow button to launch themeasurement. The result is updated in real timein the Display as well as in the DataLog fields.
If you see an error message and cannot start theNote measurement, change Speed to slower orAutoZero to On.

Display Field

The latest measured value along with the total log
counts are shown in real time. If the Min/Max Display
checkbox is ticked, further details including Min, Max,
Average and Count are displayed as well. Pressing theReStart button will recount the info within Min/Max
Display during measurement process but it is only
available for View Mode. Refer to page 14 for details.

When the 2ND display is enabled, the measured
Note value will be shown in 2ND section and theMin/Max Display, however, will be deactivated.
The latest measured values of both 1ST and 2ND displays.

16MEASUREMENT
Log Field

The table field of logs contains practical info including
time, value and unit of each measured count. Use thebuttons (First, Previous, Next and Last Page) or input
page number in upper bar to flip over the pages whencounts are over single page. User can define how many
counts to be shown within 1 page by expanding thedropdown menu where several options from 1,000 to themaximum 100,000 are available to be chosen.

Options of counts
number in one page1000, 2000, 5000, 10000,50000, 100000

Clicking the icon
goes to the predefined folder(DMM-Viewer2) to check saved logs data and recall
previous logs data when necessary.

Note
5. Setting ofDataLog
File NameLog field only appears when DataLog Mode isselected. Refer to page 14 for details.

This section is only available when DataLog Mode isactivated. Below are the further settings.
Determine the name of saving data
before measurement. Select Count,which adds a serial number insuffix of data name, or Date Time,
which adopts current date & time
for data name, or Manual, whichallows user to customize dataname in preference.

17DM2571 DMM-Viewer 2 USER MANUAL

Start

Decide which way to begin
measurement. Immediately allows
user to start measurement rightaway by manually pressing thebutton. At Time indicates that user
defines certain date & time to start.
And On Receiving External Trigger
means measurement only begins
when external trigger is received.

End

Determine which way to end
measurement. Number of Reading
indicates measurement stops when
set reading number for measured
counts is met. Duration simply
means how long the set duration formeasurement will last. And Manual
allows user to halt measurement by
manually pressing thebutton.

6. Parametersave & load

After measurement, it is viable to save the settings ofSetup section for next time utilization. Click on
Parameter(P) tab on the top Tool Bar and press Savefollowed by designating a path where file will be stored.
Press Load and pick up a saved file to recall theprevious settings when necessary.

7. Stopmeasurement

Click on the Red button to stop themeasurement right away.

8. Exit the DMM To quit the software simply click
Viewer 2 software on System(S) tab from the top
Tool Bar and press the Exitbutton.

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GRAPH DISPLAY MODE

GRAPH DISPLAY MODE
DMM Viewer 2 provides two display modes in graph for user to observe themeasured results in a preferable manner. The following chapters will further
introduce the display modes in details for better manipulation.

Trend Chart
Background

The measurement result can be observed in trend chart
display. After measurement, click on the tab TrendChart
and the screen will be shown as the figure below.

Trend chartoverview

Of the trend chart display, X scale in orange indicatesthe range of the measured counts, whilst Y scale in red
represents the range of the measured values.

Display Mode(Recent)

The Size number under Display Modeindicates the latest maximum measured
counts to be displayed. Manually input
here to define a preferable number. Themaximum number to be input is 100,000.
Note

Only View Mode allows user to manually input
Size number. In terms of DataLog Mode, referto page 17 on how to change measured counts
number to be displayed in single page.

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DM2571 DMM-Viewer 2 USER MANUAL

X ScaleX Scale indicates the X axis of range
between the minimum (Low) and themaximum (High) count numbers fortrend chart display.

Auto X Scale

Ticking the Auto checkbox lets software determine the X
range in accord with the numbers of measured counts.

Manual X Scale

Deselecting the checkbox of Auto allows user to decide theX range by manually input preferable low & high numbers,
respectively, regardless of numbers of measured counts.

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GRAPH DISPLAY MODE

Y ScaleY Scale indicates the Y axis of range
between the minimum (Low) and themaximum (High) measured values fortrend chart display.

Auto Y Scale

Ticking the Auto checkbox lets software determine the Yrange in accord with the entire measured values.

Manual Y Scale

Deselecting the checkbox of Auto allows user to decide theY range by manually input preferable low & high values,
respectively, regardless of the entire measured values.

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DM2571 DMM-Viewer 2 USER MANUAL

1ST & 2NDY ScaleTrend chart supports dual channels display
simultaneously. The Y scale, therefore, is divided into
1ST and 2ND sections. The way to define 2ND Y scale isidentical with that of the 1ST display as mentionedabove. Refer to the following figure in which red
highlight indicates the Y scale of the 1ST display,whereas orange indicates the Y scale of the 2ND display.

NoteX CursorIndicator(s)The 2ND Y Scale section hides out when the2ND display measuring function is disabled.

Click X-Cursor (1ST) or X-Cursor (2ND) or
both tags to activate highlight(s) on certain
measure value(s). Press and drag thecursor line(s) (blue for 1ST, red for 2ND) topreferable spot(s) on X scale, and themeasured value(s) of 1ST and 2ND display
will be shown clearly in green (1ST) andyellow (2ND) colors individually.

X-Cursor
X-Cursor
1ST
2NDNote22

1STValue

2NDValue

The X-Cursor (2ND) will be disabled once the2ND display measuring is deactivated.

GRAPH DISPLAY MODE

Zoom-X

Pan-X

Click on the Zoom-X tag and press and drag on
any of a specific area of the trend chart to obtainthe zoom-in close-up for detailed observation.
Zoom-X can be operated consecutively on thesame area for close-ups in more explicit manner.
1.

Press and hold on the target zone of trend chart.

2.

The close-up of target area is shown accordingly.

After operating the Zoom-X function, it isfeasible to utilize Pan-X in order to move trend
chart horizontally for another target area.
1.

Click on the Pan-X tag and press and hold the trend
chart to move it rightward or leftward.

`2.

The close-up of target area is shown accordingly.

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DM2571 DMM-Viewer 2 USER MANUAL

Zoom Out

When finishing Pan-X operation, press theZoom Out tag to return to the original display.

Time Scale

Click on the Time Scale tag to toggle between,in terms of X Scale, measured counts number
and time scale displays.
1.

The original display in X scale, which indicates themeasured counts number, e.g., 1 - 29, in the figure.

MeasuredCounts Number

2.

After clicking on the Time Scale tag, the display for X
scale changes to time scale of the measured time.

The Measured
Time Scale

Note

24

Time Scale is only available when DataLog
Mode is activated.

GRAPH DISPLAY MODE

HistogramBackgroundIn addition to Trend Chart, the measurement result canalso be observed in Histogram display. Aftermeasurement, click on the tab Histogram and thescreen will be shown as the figure below.

NoteWhen 2ND measuring function is enabled,
Histogram display will be hidden out.

Histogramoverview

Of the histogram display, X scale in orange indicates
the total range of the measured values for each bingroup, whilst Y scale in red represents the accumulated
measured counts for each bin group.

Display Mode(Recent)

The Size number under Display Mode
indicates the latest maximum measured
counts to be displayed. Manually input
here to define a preferable number. Themaximum number to be input is 100,000.
NoteBins

Only View Mode allows user to manually input
Size number. In terms of DataLog Mode, referto page 17 on how to change measured counts
number to be displayed in single page.

Since each bin contains different measured counts
depending on varied measured conditions, it is viable todetermine a maximum number of bins to display.
Manually input a number ranging from 10 to 1000 into
the field here for an estimated display in histogram.

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DM2571 DMM-Viewer 2 USER MANUALX CursorIndicator

26

1.

Take the figure below for example, the total
measured counts are 334, and we set the bins in400. From the histogram we can clearly tell that thebins number is many and sporadic where thehighest measured counts of bins are 4 in Y scale.

2.

If we set “10” in the field, the histogram shows us themaximum bins is decreased to 10 and each bin has
more measured counts than the previous. Also, thehighest measured counts of bin are 36 in Y scale.

Click X-Cursor tag to activate highlight on aspecific target bin group. Press and drag theblue cursor line to a preferable bin group on X
scale, and the Class, which is the selected binnumber, with the Count, which indicates themeasured counts of the selected bin, will beshown clearly in the left section. The Total
simply means the whole measured counts.

GRAPH DISPLAY MODE

Zoom-X

Pan-X

Click on the Zoom-X tag and press and drag on
any of a specific area of the histogram to obtainthe zoom-in close-up for detailed observation.
Zoom-X can be operated consecutively on thesame area for close-ups in more explicit manner.
1.

Press and hold on the target zone of histogram.

2.

The close-up of target area is shown accordingly.

After operating the Zoom-X function, it isfeasible to utilize Pan-X in order to movehistogram horizontally for another target area.

1.

Click on the Pan-X tag and press and hold thehistogram to move it rightward or leftward.

`
2.

Zoom OutThe close-up of target area is shown accordingly.

When finishing Pan-X operation, press theZoom Out tag to return to the original display.

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DM2571 DMM-Viewer 2 USER MANUAL

VERSION
This section describes how to view the version number of the software.
View Software
Version28

You may need to check the version of the software tosee if you have the latest version.
1.

Start DMM Viewer 2.

2.

On the main display window click
the About(A) tab on the top Tool
Bar to show the version info.

NOTES Reproduction of the instruction manual, part or whole, is forbidden without priorwritten permission.
 The contents of the instruction manual are subject to change without notice.

 Information provided in the instruction manual is intended to be accurate andreliable. However, we assume no responsibility for any damage regarding thecontents of the instruction manual.
If you have any uncertainty or you found an error or omission, please contact NF
Corporation or one of our representatives from which you purchased the product.

DM2571DMM VIEWER 2 USER MANUALNF Corporation

6-3-20 Tsunashima Higashi, Kohoku-ku, Yokohama 223-8508, JAPAN
Phone: +81-45-545-8111
http://www.nfcorp.co.jp/
C Copyright 2020, NF Corporation◯http://www.nfcorp.co.jp/

NF Corporation
6-3-20 Tsunashima Higashi, Kohoku-ku, Yokohama 223-8508, JAPAN Phone: +81-45-545-8111