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.
———————————————————————————————————————
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.
———————————————————————————————————————
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)

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Secondary Parameters
◼ D (Dissipation factor)
◼ Q (Quality factor)
◼ Rs (Equivalent Series Resistance ESR)
◼ Rp (Equivalent Parallel Resistance)
◼ X (Reactance)
◼ B (Admittance)
◼ θ(Phase Angle)
Test results of primary and secondary parameters are respectively displayed in
two lines in the form of upper-case characters. The primary parameter displays in
the upper line while the secondary parameter displays in the lower line.
Operation steps for setting test function:
1) Move the cursor to FUNCA zone, the following soft keys will be displayed on the
screen.
◼ Cp—…→
◼ Cs—…→
◼ Lp—…→
◼ Ls—…→
◼ Z—…→
◼ ↓
2) Press the soft key corresponding to Cp—…→, the following parameters will be
shown for your choice.
◼ Cp-D
◼ Cp-Q
◼ Cp-G
◼ Cp-Rp
◼ ←
Press the soft key corresponding to your desired parameter. Then press ← to
return to upper soft key menu.
3) Press Cs—…→, the following parameters will be shown for your choice.
◼ Cs-D
◼ Cs-Q
◼ Cs-Rs
◼ ←
Press the soft key corresponding to your desired parameter. Then press ← to return to
upper soft key menu.
4) Press Lp—…→, the following parameters will be shown for your choice.
◼ Lp-D
◼ Lp-Q
◼ Lp-G
◼ Lp-Rp
◼ ←
Press the soft key corresponding to your desired parameter. Then press ← to return to
upper soft key menu.
5) Press Ls—…→, the following parameters will be shown for your choice.
◼ Ls-D
◼ Ls-Q
◼ Ls-Rs
◼ ←
Press the soft key corresponding to your desired parameter. Then press ← to return to
upper soft key menu

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6) Press Z—…→, the following parameters will be shown for your choice.
◼ Z-d
◼ Z-r
◼ ←
Press the soft key corresponding to your desired parameter. Then press ← to
return to upper soft key menu.
7) Press ↓, another group of soft keys will be shown.
◼ Y—…→
◼ R—…→
◼ G—B
◼ DCR
◼ ←
Press the soft key corresponding to your desired parameter. Then press ← to return to
upper soft key menu.
8) Press Y—…→, the following parameters will be shown for your choice.
◼ Y-d
◼ Y-r
◼←
Press the soft key corresponding to your desired parameter. Then press ← to return to
upper soft key menu.
9) Press R—…→, the following parameters will be shown for your choice.
◼ R-X
◼ Rp-Q
◼ Rs-Q
◼←
Press the soft key corresponding to your desired parameter. Then press ← to return to
upper soft key menu.
Parameter setup of FUNCB is the same as that of FUNCA, but FUNCB can be turned off
(OFF).

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3.1.2 3.1.2 Test range
Measurement range should be selected in accordance with the impedance value
of the tested LCR component.
LM1050has 10 AC ranges：1Ω, 10Ω, 30Ω, 100Ω, 300Ω, 1kΩ, 3kΩ, 10kΩ、100kΩand
1MΩ.
LM1050has 10 DCR measurement ranges: 1Ω, 10Ω, 30Ω,100Ω, 300Ω, 1kΩ, 3kΩ,
10kΩ,100kΩand 1 MΩ.
Operation steps for setting test range:
1) Move the cursor to the range zone, the following soft keys will be displayed:
◼ AUTO The soft key is used to set the range mode to AUTO.
◼ HOLD The soft key is used to switch the AUTO mode to the HOLD mode.
When the range mode is set to HOLD, the range will be locked in the current
measurement range. The current measurement range will be displayed in the
range zone.
◼ ↑(+) The soft key is used to increase the range under HOLD mode.
◼↓(-) The soft key is used to decrease the range under HOLD mode.
2) Use soft keys to set measurement range.
3.1.3 3.1.3 Test frequency
The measurement range of LM1050ranges from 20Hz to 5MHz with an increase or
decrease of 0.01Hz. When the test function is set as DCR, the FREQ zone will
display “---”.
Operation steps for setting test frequency:
LM1050provides two methods to set measurement frequency. The first one is to
use soft keys and the other one is to input data by using numeric keys.
1) Move the cursor to the FREQ zone, the following soft keys will be displayed.
◼ ↑(++)
This is a coarse adjustment soft key used to increase the frequency. Press this
key, the frequency will be increased to the next 10 times frequency point after
20 Hz.
◼ ↑(+)
This is a fine adjustment soft key used to increase the frequency. Press this key, the
frequency will be increased to a higher frequency point. 10 frequency points
can be set among 10 times frequency point.
◼ ↓(-)
This is a fine adjustment soft key used to decrease the frequency. The
selectable frequencies are the same as that of ↑(+).
◼ ↓(--)
This is a coarse adjustment soft key used to decrease the frequency. The
selectable frequencies are the same as that of ↑(++).
2) Use soft keys or numeric keys to select or set frequency. When using numeric keys
to input the required frequency value, the soft key displays the available frequency
units (Hz, kHz and MHz). You can use unit soft key to input unit and data. When
using [ENTER] to input frequency, the default unit is Hz.

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3.1.4 3.1.4 Test level
The measurement level of LM1050can be set according to the RMS value of sine wave
signal. The frequency of sine wave signal is the test frequency which is generated by
inner oscillator. You can set measurement voltage or current. There are 4 kinds if signal
source input impedance in LM1050.When the test function is DCR, the FREQ zone will
display “---”.
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Note: The measurement current is the output one when the tested terminal is short, while
the measurement voltage is the output one when the tested terminal is open.
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The auto level control function of LM1050can realize the measurement of constant
voltage or current. The auto level control function (ALC) can be set as ON in <MEAS>
page. When the auto level control function is set to ON, “*” will be displayed following
the current level value. Refer to <MEAS> for more information.
Operation steps for setting test level:
LM1050provides two methods to set the level of test signal source. The first one
is to use soft keys, while the second one is to input data by numeric keys.
1) Move the cursor to LEVEL, the following soft keys will be displayed.
◼ ↑(+)
This soft key is used to increase the level of test signal source.
◼ ↓(-)
This soft key is used to decrease the level of test signal source.
2) Soft or numeric keys are used to select or set the test level. When numeric keys
are used to input the desired level, the available units (mV, V, μA, mA and A) will be
displayed in the soft key zone. Users can use these unit keys to input unit and data.
When [ENTER] is used to terminate the input of level, the default level is V or A.
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NOTE: When you need to switch the level between current and voltage, numeric keys and
unit soft keys must be used.
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3.1.5 3.1.5 DC bias
LM1050provides internal DC bias voltage of -5V～+5V. When the test function is
selected as DCR, the bias zone will display “---”.
Operation steps for setting DC bias:
LM1050provides two methods to set the DC bias. The first one is to use soft keys, while
the second one is to input data by numeric keys.
1) Move the cursor to DC BIAS, the following soft keys will be displayed.
◼ ↑(+)
This soft key is used to increase the output level of DC bias.
◼ ↓(-)
This soft keys is used to decrease the output level of DC bias.
2) Soft or numeric keys can be used to select or set the DC bias source. When
numeric soft keys are used to input the desired bias level, the available units ((mV,
V, μA, mA and A) will be displayed in the soft key zone. Users can use these soft
keys to input unit or data. When [ENTER] is used to terminate the input of bias
value, the default unit is V or A.
———————————————————————————————————————
NOTE: When you need to switch the DC bias level between current and voltage, numeric keys
and unit soft keys must be used.
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Press the [DC BIAS] key on the front panel to allow the output of DC bias. When
DC bias is permitted to output, the [DC BIAS] key will be lighted.
3.1.6 3.1.6 Test speed
The test speed of LM1050is determined by the following factors:
◼ Integration time (A/D conversion)
◼ Average times (average test times per each test)
◼ Measurement delay (from startup to the start of measurement)
◼ Display time of test results
You can select test mode as FAST, MED or SLOW. Generally, the test result is
more stable and accurate in SLOW test mode.
Operation steps for setting test speed:
1) Move the cursor to SPEED, the following soft keys will be displayed:
◼ FAST
◼ MED
◼ SLOW
2) Use above soft keys to set the test speed.

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3.1.7 3.1.7 Tools
The test result of LM1050 is displayed as 6 floating-point digits. Decimal point lock
function can make LM1050 output the test result in fixed way. Meanwhile this function
can change the displayed count of test result. This displayed result can be selected to
be shown in large character or small character.
Operation steps for tools
Set the display mode of decimal point in fixed mode according to the following
operation steps. Also the character size of test result can be set.
1) Move the cursor to MEAS RESULT DISP zone, the following soft keys will be
displayed:
◼ D.P. AUTO
◼ D.P. FIX
◼ D.P. INCR +
◼ D.P. INCR -
2) Press D.P. AUTO to reset the decimal position of the primary or the secondary
parameter test result to its default setting.
3) Press D.P. FIX to lock the decimal location of primary parameter TEST result.
4) Press D.P. INCR + to increase the displayed digit by ten times.
5) Press D.P. INCR - to decrease the displayed digit by ten times
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NOTE: Under the following circumstance, the function of decimal lock will be cancelled
automatically to recover to floating decimal point status.
◼ Test function is changed.
In deviation test, the deviation test mode (ΔABS, Δ%, OFF) is changed.
———————————————————————————————————————
3.1.8 3.1.8 Save LCR test result by U disk
Users can use U disk to save LCR test result. The following test results and the saving
format can be stored in U disk.
1) COMP-ON: primary parameter, secondary parameter, status (0 means normal),
sorting result
COMP-OFF: primary parameter, secondary parameter, status (0 means normal)
2) DCR: DCR, primary parameter
3) LIST SCAN: list, primary parameter, secondary parameter, status (0 means
normal), compare result (-1 means lower than the nominal value, while 1 means
higher than the nominal value), line NO.
3.2 3.2 <BIN NO. DISP>
Press [DISP] firstly and then the BIN NO. soft key to enter into <BIN NO. DISP> display
page. On this page, bin NO. is displayed in upper-case character while the test result, in
lower-case character.

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The following control parameters can be set on <BIN NO. DISP>.
◼ Compare function ON/OFF (COMP)
There are 2 zones: BIN NO. DISP, COMP. Their detailed information will be introduced as
below.
The following test conditions are displayed in the measurement result/condition zone.
These zones cannot be set on this page but can be set on <MEAS SETUP>, <MEAS DISP>
or <CORRECTION>.
◼ Test function (FUNC)
◼ Test range (RANGE)
◼ Test frequency (FREQ)
◼ DC bias
◼ Test level (LEVEL)
◼ Test speed (SPEED)
◼ Compare (COMP)
3.2.1 3.2.1 Comparator function
LM1050has an inserted compare function which can divide DUT to up to 10 bins (from
BIN1 to BIN9 and BIN OUT). Users can set 9 pairs of primary parameter limit and one
pair of secondary bin limit. If the primary parameter of DUT is within the range of the
bin limit but the secondary parameter is outside of the bin limit, the DUT will be sorted
into the auxiliary bin. When LM1050has installed an HANDLER interface, the compare
result will be output into the automatic test system and further realizing auto-sorting
test. These limits can only be set on the <LIMIT TABLE SETUP> page. Users can set the
compare function to ON or OFF in the COMP zone.
Operation steps for compare function
1) Move the cursor to COMP, the following soft keys will be displayed.
◼ ON
◼ OFF
2) Select one of above soft keys to set the compare function as ON or OFF.

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3.3 3.3 <BIN COUNT DISP>
Press [DISP] and then select the soft key of BIN COUNT to enter into the <BIN
COUT> page which shows the count of each bin.
The following control parameters can be set on the <BIN COUNT> page.
◼ Count function ON/OFF (COUNT)
There are 2 zones are displayed in this page: BIN COUNT DISP, COUNT. The function of
each zone will be introduced as below.
The following test result/ condition can be displayed in this page but cannot be set in
this page. Users can set them on the <LIMIT TABLE SETUP> page.
◼ Test parameter (PARAM)
◼ Nominal value (NOM)
◼ Bin limit value (HIGH/ LOW)
3.3.1 3.3.1 PARAM
Parameter zone shows the “Function” parameter, if user selects primary and secondary
parameter swap compare mode, the parameter will be displayed as swap parameter,
such as: “Cp-D” is displayed as “D-Cp”, which means the current D is compared as
primary parameter while Cp is compared as secondary parameter.
3.3.2 3.3.2 NOM.
Nominal parameter is the nominal value used to make bin compare.
3.3.3 3.3.3 BIN
This zone shows the bin number of the limit list. “2nd” means the secondary parameter
limit.

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3.3.4 3.3.4 HIGH/LOW
This zone shows the high and the low limits of the limit list.
3.3.5 3.3.5 COUNT
This zone shows the count value of the current bin.
3.3.6 3.3.6 AUX
This zone shows the count value of the auxiliary bin.
3.3.7 3.3.7 OUT
This zone shows the count value of the out bin.
Operation steps for bin count function
Execute the following operations to set the bin count function ON/OFF on <BIN COUNT
DISP> page.
1) On < BIN COUNT DISP> page, move the cursor to COUNT zone, the following soft
keys will be displayed.
◼ ON
◼ OFF
◼ RESET
2) Press the soft key ON to turn on the count function.
3) Press the soft key OFF to turn off the count function.
4) Press the soft key RESET, “☺: Reset count, Sure?” will be displayed in the help
zone. Then the following soft keys will be displayed.
◼ YES
◼ NO
5) Press the soft key YES to reset all bin counts to 0.
6) Press the soft key NO to cancel the reset operation.
3.4 3.4 <LIST SWEEP DISP>
Up to 10 test frequencies, test levels or DC bias can be set on this page. Users can set
the high and the low limits for each list-sweep test point. Auto sweep test will be made
on these test points. And their test results will be compared with theirlimits.
Press down the menu key [DISP] and then the soft key LIST SWEEP to enter
into the <LIST SWEEP DISP> page, shown as below.

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Test points will be automatically tested in a scanning mode. Meanwhile, comparison will
be made between test results and limit values. In the process of list sweep test, “►”
denotes the current sweep test point. The following control parameters can be set on
<LIST SWEEP DISP>.
◼ Sweep mode (MODE)
There are 2 zones on this page: LIST SWEEP DISP and mode. List sweep points
cannot be set on this page but can be set on <LIST SWEEP SETUP>.
3.4.1 3.4.1 Sweep mode
The list sweep function of LM1050 can make automatic sweep test for up to 10 points’
test frequencies, test levels or DC bias. Two sweep modes are available on LM1050:
SEQ and STEP. In SEQ mode, each press of [TRIGGER] will direct LM1050 to
automatically test all list sweep test points. In STEP mode, each press of [TRIGGER] will
direct LM1050 to test one list sweep point.
———————————————————————————————————————
NOTE:When the trigger mode is set to INT, sweep test modes of SEQ and STEP will not
be controlled by [TRIGGER].
When the trigger mode is set to MAN, [TRIGGER] can be used to trigger the list
sweep test.
———————————————————————————————————————
Operation steps for setting the list sweep mode:
Set the sweep mode on the <LIST SWEEP DISP> page as SEQ or STEP.
1) On the < LIST SWEEP DISP > page, move the cursor to the MODE zone, the
following soft keys will be displayed:
◼ SEQ
◼ STEP
2) Press SEQ to set the sweep mode as sequential sweep test mode.
3) Press STEP to set the sweep mode as single step sweep test mode.