KUST Elektronik LM1050 User manual

LM1050 Operating Manual
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KUST Elektronik GmbH
LM1050
OPERATION MANUAL
KUST Elektronik GmbH
Am Weinberg 2
D-35619 Braunfels
Germany
E: [e-mail]
P: [phone]

LM1050 Operating Manual
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Announcement
The description of the manual may not cover all contents of the instrument, and
is subject to change and to improve the performance, function, inner structure,
appearance, accessory and package of the instrument without notice. If there is
a problem caused by inconsistency of manual and instrument, please contact
our company .
1Chapter 1 Out of Box Audit
When you receive the instrument, some inspections are necessary, and the
condition must be understood and available before installing the instrument.
1.1 1.1 To Inspect the package
Inspect the shipping box for damage after unpacking it. It is not recommended to
power on the instrument in the case of a damaged box.
If the contents in the container do not conform to the packing list, notify us or
your dealer.
1.2 1.2 Power connection
1) Power-supplying voltage range: 100~120Vac or 198~242Vac. Being related
with the power setup on the rear panel.
2) Power-supplying frequency range: 47~63Hz.
3) Power-supplying power range: less than 80VA.
4) Power supplying input phase line L, zero line N, ground lead E should be as
same as the power plug of the instrument.
5) After careful design, the instrument can reduce the clutter jamming caused
by AC power terminal input, however, it should be used under the
environment with low-noise. Please install power filter if being unavoidable.
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Warning: In order to prevent user and instrument from being hurt by leakage, it is necessary
for user to guarantee the ground line of supply power being reliably grounded.
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1.3 1.3 Fuse
The instrument has installed fuse, so operators should use the installed fuse of our
company.
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Warning: Be sure that the location of fuse is consistent with power-supplying voltage range
before charging.

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1.4 1.4 Environment
1) Please do not operate the instrument in the place that is: dusty, under direct
sunlight or where there is corrosive environment.
2) The normal working temperature is 0°～40°, relative humidity ≤75%, so the
instrument should be used under above condition to guarantee the accuracy.
3) There is heat abstractor on the rear panel to avoid the inner temperature rising. In
order to keep good airiness, please don’t obstruct the left and right airiness holes to
make the instrument maintain the accuracy.
4) Although the instrument has been specially designed for reducing the noise caused
by ac power, a place with low noise is still recommended. If this cannot be
arranged, please make sure to use power filter for the instrument.
5) Please store the instrument in the place where temperature is between 5°Cand
40°C, humidity is less than 85%RH. If the instrument will not be put in use for a
time, please have it properly packed with its original box or a similar box for
storing.
6) The instrument/test cable should be far from strong electro-magnetic field,
1.5 1.5 Use of Test Fixture
Please use the accessory test fixture or cable, the test fixture made by user or from other
company may cause the incorrect measurement result. The test fixture or cable should be
kept clean, as well as the pin of DUT, thus to guarantee the good connection between
DUT and fixture. Connect the fixture or cable to four test terminals Hcur, Hpot, Lcur,
Lpot on the front panel. As for the DUT with shielding shell, connect shielding layer or
ground “┴”.
Note: When test fixture or cable has not being installed, the instrument will display an
unstable test result.
1.6 1.6 Warm-up
1) To guarantee the accurate measurement, the warm-up time is no less than 15min.
2) Please not turn on or off instrument frequently, in order to avoid the inner data
fluster.
1.7 1.7 Other features
1) Power: consumption power≤80VA.
2) Dimension (W*H*D): 398mm*129mm*370mm
3) Weight: About 9kg.

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2Chapter 2 Introduction
In this chapter, the basic operation features of LM1050 series are described.
Please read the content carefully before using LM1050 series instruments, thus
you can learn the operation of LM1050.
2.1 2.1 Introduction to front panel
Figure 2-1 shows the front panel LM1050.
1) Buzzer window
2) LCD
800*480 colorful TFT LCD displays measurement results and conditions.
3) Brand and model
Brand and model
4) Soft keys
Six soft keys are used to select parameters. The corresponding function of each soft
key has been displayed on its left (the right part of LCD). The function definition
varies with different pages.
5) [FILE]
Press this key to enter into the file setup page.
6) PASS indicator
LED indicator shows the test result has passed.
7) [DISP]
Press this key to enter into the display page of transformer scanning test.
8) [SETUP]
Press this key to enter into the setup page of transformer scanning test.
9) FAIL indicator
LED indicator shows the test result has failed.
10) [SYSTEM]
Press this key to enter into the system setup page.
11) Numerical keys
These keys are used to input data to the instrument. The key consists of numerical
keys [0] to [9], decimal point [.] and [+/-] key.
12) [ENTER]
This key is used to end the input of data, and confirm and save the data displayed
on the inputting line (the bottom line on LCD).
13) [CAL]
Execute the calibration operation. Press this key to execute OPEN/SHORT
calibration.

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14) [ESC]
ESCAPE key
15) [←]
BACKSPACE key is used delete the last numeric of the input value.
16) [KEYLOCK]
Press [KEYLOCK], it will be lighted, which means the function of current panel is
locked. Press it again, it will be off, which means discharging the lock status. If the
password function is ON, it means correct password is necessary when
discharging the key-lock, or the key cannot be unlocked.
17) [DC BIAS]
[DC BIAS] is used to permit or forbid the output of 0-100mA/10V DC bias source.
Press this key, it will be lighted which means DC bias output is permitted. Press this
key once more, it will be off which means DC bias output is prohibited. The key is
useless in some pages where the DC BIAS cannot be added.
18) [RESET]
Press this key, when transformer auto scanning is cancelled, other operation cannot
be executed on other pages.
19) [TRIGGER]
When the trigger mode is set to MAN mode, press this key to trigger the
instrument.
20) Reserved.
21) Test terminals (UNKNOWN)
4-teminal test pair are used to connect 4-terminal test fixture or cable to measure
DUT.
The 4 terminals are respectively as follows: Hcur, Hpot, Lpot and Lcur.
22) CURSOR
Cursor key is used to select cursor between zone and zone on LCD display page.
When cursor moves to some zone, the zone displays with reverse on LCD.
23) Ground terminal
The ground terminal is connected with the case of instrument, which can be used to
protect or shield the ground connection.
24) [COPY]
Copy the currently displayed page to USB memory.
25) POWER
Power switch
26) USB HOST interface
Connect U flash disk so as to save or use a specified file

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.
2.2 2.2 Introduction to rear panel
Figure 2-2 shows the rear panel of LM1050.
Figure 2-2 Rear panel
1) PHONE interface
2) FOOT. C: Used to connect footswitch.
3) RS232 interface
Series communication interface can realize the communication with PC.
4) HANDLER interface
Handler interface is used to realize the sorting output of test results.
5) IEEE-488 interface
The tester can communicate with PC through GPIB interface.
6) Fan window
Heat elimination, maintaining the normal working temperature
7) Fuse base
Being used to install power fuse, protect instrument.
8) Power socket
Input AC power.
9) Ground terminal
The ground terminal is connected with the case of instrument, which can be used to
protect or shield the ground connection.
10) 110V/220V Switch
switch 110V/220V by changing the direction of core.
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Warning: Be sure that the direction of fuse is accordant with power-supply voltage range
before charging.
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11) SCANNER interface
Control the transformer scanning box through SCANNER interface.
12) USB DEVICE interface
The tester can communicate with PC through the USB DEVICE interface.
13) LAN interface
LAN interface is used to realize the control and the communication of network
system.

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2.3 2.3 Basic Operation
Basic operation of LM1050is as follows:
◼ Use menu keys ([DISP], SETUP], [SYSTEM]) and soft keys to select the desired
page.
◼ Use cursor keys ([←][→]) and the slide switch to move the cursor to the desired
zone. When the cursor moves to a specified zone, the zone will become reverse
expression.
◼ The soft key functions corresponding to the current zone of the cursor will be
displayed in the soft key zone. Users can select and use the desired key. Numeric
keys, [BACKSPACE] and [ENTER] are used to input data. When a numeric key is
pressed down, the usable unit soft key will be displayed in the soft key zone. You
can choose a unit soft key or press [ENTER] to end data inputting. When [ENTER] is
used to terminate data inputting, the unit of data will be set to a default unit, such
as Hz, V or A. For example, the default unit for frequency is Hz.
2.4 2.4 Start the instrument
Plug in 3-line power plug.
Caution: Keep the power-supply voltage and frequency conform to above specifications.
Power input phase line L, zero line N, ground line E should be the same as that of the
instrument.
Press the power switch at the left corner on the front panel and then a boot screen will
appear which displays our company logo, instrument model (LM1050), and
the version number of the software (Ver1.0.X).
If the password protection function is on, users are required to input the password and
then press [ENTER] to enter into the page of main menu.
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Note: The instrument has a default password 2876. In your practical use, you
can change it and set your own one. Please see <SYSTEM> section for more
information.

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3Chapter 3 Introduction to [DISP]
3.1 3.1 <MEAS DISPLAY>
When the LCR function is applied, press [DISP], the <MEAS DISPLAY> page will be
displayed on screen as shown in the following figure.
On this page, the test result is displayed in upper-case character. The measurement
control parameters can be set in this page:
◼ Test function (FUNC)
◼ Test range (RANGE)
◼ Test frequency (FREQ)
◼ DC bias
◼ Test level (LEVEL)
◼ Test speed (SPEED)
There are 6 zones in this page: FUNC, RANG,FREQ, DC BIAS,LEVEL, SPEED. The details
will be discussed later.
The test result/ condition display zone shows the information about test condition.
These conditions can be set on <Measure> page or <Correction> page.
◼ Signal source voltage/ current monitor (Vm, Im)
◼ Open, short, load correction ON/OFF status (CORR)
3.1.1 3.1.1 Test function
In a measurement period, LM1050can test four parameters for an impedance
component: two primary parameters and two secondary parameters. Parameters
that can be tested are as follows:
Primary parameters
◼|Z| (Module of impedance)
◼ |Y| (Module of admittance)
◼ L (Inductance)
◼ C (Capacitance)
◼ R (Resistance)
◼ G (Conductance)
◼ DCR (DC resistance)