Sourcetronic ST2523 User manual

SOURCETRONIC − Quality electronics for service, lab and production
Battery Tester ST2523/A
User Manual

Contents
Chapter 1 Introduction to Instrument, Unpacking and Installing ............................................ 1
1.1 Introduction to the Instrument............................................................................................ 1
1.2 OOBA (Out of Box Audit)...................................................................................................... 1
1.3 Power Connections.............................................................................................................. 1
1.4 Fuse...................................................................................................................................... 2
1.5 Environment ........................................................................................................................ 2
1.6 Use of Test Fixture................................................................................................................ 2
1.7 Warm-up.............................................................................................................................. 2
1.8 Other Features ..................................................................................................................... 2
Chapter 2 Introduction to Front Panel and Operation............................................................ 3
2.1 Introduction to Front Panel ................................................................................................. 3
2.2 Introduction to Rear Panel................................................................................................... 4
2.3 Display Zones ....................................................................................................................... 5
2.4 Keys and Their Corresponding Display Pages....................................................................... 6
2.4.1 Main Menu Key: [DISP] ................................................................................................. 6
2.4.2 System Setup Key: [SETUP] ........................................................................................... 6
2.5 Basic Operations .................................................................................................................. 6
2.6 Starting Up ........................................................................................................................... 7
Chapter 3 Basic Operations .................................................................................................. 8
3.1 <MEAS DISP>........................................................................................................................ 8
3.1.1 Measurement Functions............................................................................................... 9
3.1.2 MEAS RANGE ................................................................................................................ 9
3.1.3 Measurement Speed................................................................................................... 10
3.1.4 File Manage ................................................................................................................ 10
3.1.5 TOOLS.......................................................................................................................... 10
3.2 <BIN DISP> ......................................................................................................................... 11
3.3 <TRACE DISP>..................................................................................................................... 13
3.4 <MEAS SETUP>................................................................................................................... 14
3.4.1 TRIG............................................................................................................................. 15
3.4.2 Delay ........................................................................................................................... 15
3.5 <BIN SETUP> ...................................................................................................................... 16
3.6 <TRACE SETUP>.................................................................................................................. 17
3.7 <STATIS DISP>..................................................................................................................... 18
3.7.1 Mode........................................................................................................................... 18
3.7.2 NOMA/NOMB............................................................................................................. 18
3.7.3 Number....................................................................................................................... 18
3.7.4 Statis A/Statis B........................................................................................................... 19
3.7.5 Hi/Lo ........................................................................................................................... 19
3.7.6 Parameter Specifications for Statistic Analysis ........................................................... 19

ST2523 Series Operation Manual Ver1.2
Contents
3.7.7 TOOLS.......................................................................................................................... 20
Chapter 4 System Setup and File Manage ........................................................................... 21
4.1 System Setup ..................................................................................................................... 21
4.1.1 Key Sound ................................................................................................................... 21
4.1.2 Language..................................................................................................................... 21
4.1.3 Password..................................................................................................................... 21
4.1.4 Bus Mode.................................................................................................................... 22
4.1.5 Baud Rate.................................................................................................................... 22
4.1.6 Bus Addr...................................................................................................................... 22
4.1.7 Time............................................................................................................................ 23
4.2 <File Manage> ................................................................................................................... 23
4.2.1 Introduction to Save/Recall ........................................................................................ 23
4.2.2 Structure of File Folder/ File in a U Disk ..................................................................... 24
Chapter 5 Performance Index............................................................................................. 26
5.1 Measurement Function ..................................................................................................... 26
5.1.1 Measurement Parameters and Notations................................................................... 26
5.1.2 Measurement Groups................................................................................................. 26
5.1.3 Mathematical Operations ........................................................................................... 26
5.1.4 Range .......................................................................................................................... 26
5.1.5 Trigger ......................................................................................................................... 26
5.1.6 Average ....................................................................................................................... 26
5.1.7 Display Digits............................................................................................................... 27
5.2 Test Signal .......................................................................................................................... 27
5.2.1 Frequency ................................................................................................................... 27
5.2.2 Maximum Input Voltage ............................................................................................. 27
5.2.3 Maximum Display Range ............................................................................................ 27
5.2.4 Measurement Accuracy .............................................................................................. 27
5.2.5 Basic Accuracy for Resistance Measurement.............................................................. 28
5.2.6 Basic Accuracy for Current and Voltage Measurement .............................................. 28
Chapter 6 Remote Control.................................................................................................. 30
6.1 RS232C Connection............................................................................................................ 30
6.2 GPIB Bus (option)............................................................................................................... 31
6.2.1 GPIB Interface Functions............................................................................................. 33
6.2.2 GPIB Addressing.......................................................................................................... 33
6.2.3 GPIB Bus Commands................................................................................................... 33
6.2.4 SCPI (Standard Commands for Programmable Instruments)...................................... 34
6.3 USBTMC Remote Control System ...................................................................................... 35
6.3.1 System Configuration.................................................................................................. 35
6.3.2 Install the Driver ......................................................................................................... 35
6.4 USBCDC Virtual Serial Port ................................................................................................ 37

ST2523 Series Operation Manual Ver1.2
Contents
Chapter 7 SCPI Command Reference................................................................................... 38
7.1 ST2523 Subsystem Commands .......................................................................................... 38
7.1.1 DISPlay Subsystem Commands ................................................................................... 38
7.1.2 FUNCtion Subsystem Commands ............................................................................... 40
7.1.3 APERture Subsystem Commands................................................................................ 45
7.1.4 TRIGger Subsystem Commands: ................................................................................. 45
7.1.5 FETCh? Subsystem Commands ................................................................................... 47
7.1.6 COMParator Subsystem Commands:.......................................................................... 47
7.1.7 BINSETup Subsystem Commands................................................................................ 49
7.1.8 Statistical Subsystem Commands................................................................................ 52
7.1.9 TRACe Subsystem Commands .................................................................................... 56
7.1.10 SYSTem Subsystem Commands................................................................................. 57
7.1.11 Mass MEMory Subsystem Commands...................................................................... 58
7.2 GPIB Common Commands................................................................................................. 59
Chapter 8 Handler Interface............................................................................................... 62
Chapter 9 Package Contents and Warranty ......................................................................... 65
9.1 Package Contents............................................................................................................... 65
9.2 Marks ................................................................................................................................. 65
9.3 Package .............................................................................................................................. 65
9.4 Shipping ............................................................................................................................. 65
9.5 Storage............................................................................................................................... 66
9.6 Warranty ............................................................................................................................ 66
Declaration:
The descriptions contained in this manual may not cover all information about this instrument. Introductions to
the improvements of the instrument in performance, function, internal structure, outer appearance, accessories,
packing material, etc. are subject to change without notice. If you find any inconformity of this manual with our
instruments, please contact us for further consultation by the address listed on the cover.

ST2523 Series Operation Manual Ver1.2
1
Chapter 1 Introduction to Instrument, Unpacking and
Installing
Thank you for your purchase and use of our products! This chapter will introduce the basic instrument
performance, which is followed by notes of unpacking and installing.
Caution: the low test terminal of ST2523/A is connected to the ground. When testing other device or
components except batteries, or sending it to Bureau of Standard Measurement for calibration, please
plan your measuring setup accordingly.
1.1 Introduction to the Instrument
With the rise of consumer electronics, smart phones, home appliances, electric vehicles emerge endlessly. All
these products require batteries to work properly; quickly and accurately detecting the battery performance will
directly affect the product performance.
With profound electronic technology and extensive market research, we introduce the color LCD battery tester
ST2523. Its superior performance, ease of operation, beautiful appearance is comparable to leading-edge
products on the market.
1.2 OOBA (Out of Box Audit)
Inspect the shipping container for damage after unpacking it. It is not recommended to power on the instrument
in the case of a damaged container.
If the contents in the container do not conform to the packing list, notify us or your dealer.
1.3 Power Connections
( 1 ) Power Supply Voltage: 220 to 240 V
( 2 ) Power Supply Frequency: 50 Hz.
( 3 ) Power Supply Power Range: ≤ 30 VA.
( 4 ) L (line wire), N (neutral wire) and E (earth ground wire) of the power supply input socket should
correspond to the power plug of the instrument.
( 5 ) The instrument has been carefully designed for decreasing noise jamming caused by the input in AC
power terminal, but it is also recommended to use it in the environment of low noise. If noises cannot
be avoided, install a power filter please.
WARNING: To avoid injury to personnel and damage to the instrument resulting from electric
shock, do ensure that the earth ground wire is properly grounded.

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1.4 Fuse
The fuse is a standard configuration, so use the included custom fuse please.
1.5 Environment
( 1 ) Do not store or use the instrument where it could be exposed to many dusts, great vibration, direct
sunshine and corrosive gas.
( 2 ) The instrument should operate under the temperature ranging from 0°C to 40°C, relative humidity of
no greater than 75%. For high accuracy, use the instrument in the environment above mentioned.
( 3 ) For high accuracy, do not block the left air vent so as to ensure good ventilation.
( 4 ) The instrument has been carefully designed for decreasing noise jamming caused by the AC power
input, but it is also recommended to use it in the environment of low noise. If noises cannot be avoided,
please install a power filter.
( 5 ) If the instrument will not be used for a long time, please place it in the original or a similar packing
box. The environment temperature should be kept in range of 5°C to 40°C, and the relative humidity
should not be greater than 85%. The box should be located in an airy room where it could not be
exposed to corrosive impurities and direct sunlight.
( 6 ) Test leads on the instrument that are connected to DUTs should be kept away from strong
electromagnetic fields to avoid interference.
1.6 Use of Test Fixture
Only use the test fixture or cable made by our company, because the use of other test fixtures or cables may
result in incorrect measurement results. In addition, for good contact of DUT and fixture, keep the test fixture or
cable and pins of DUT clean.
Connect the test fixture or cable to HI and LO terminals on the instrument front panel. Ensure the color and
arrow conformity of the test fixture with that of sockets on panels to avoid abnormal measurement.
1.7 Warm-up
( 1 ) For accurate measurement, the warm-up time should not be less than 30 minutes.
( 2 ) Do not turn on or off the instrument frequently. This may cause internal data confusion.
1.8 Other Features
( 1 ) Consumption: ≤10VA.
( 2 ) Dimensions (W*H*D): 235mm*104mm*360mm; this dimension is the final packaging size.
( 3 ) Weight: Approx. 3.6kg.

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Chapter 2 Introduction to Front Panel and Operation
This chapter will deal with basic operation procedures of ST2523. Before using the instrument, please read this
chapter carefully.
2.1 Introduction to Front Panel
Figure 2-1 shows the front panel of ST2523.
!
CAT I
±300VDC Max
LCUR LPOT HPOT HCUR
UNKNOWN
PASS
FAIL
LOCK
7
4
1
9
6
3
8
5
2
COPY
RESET
TRIG
SETUPDISP
MENU
0.+/-
ENTRY
1 6
9
2 7
10
83 4 5
11
12131415
ST2523 BATTERY TESTER
Figure 2-1 Front Panel
(1) Trademark and Model
Show instrument trademark and model.
(2) [DISP] Key
Press [DISP] to enter into the MEAS DISP page.
(3) [SETUP] Key
Press [SETUP] to enter into the MEAS SETUP page.
(4) Universal Arrow Keys
There are four arrow keys: up, down, left and right arrow keys.
(5) Numeric Key
This key is used to input the figure.
(6) LOCK Key
Press this key to lock the screen and press it again to unlock the screen.

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(7) COPY Key
Press this key to save the current screen shot to U-disk.
(8) PASS/FAIL Display
The compare results will be displayed through PASS/FAIL .
(9) USB Interface
USB HOST Interface
(10) RESET Key
System reset key.
(11) TRIG Key
In MAN (manual) mode, pressing this key can trigger the instrument manually.
(12) Test Terminal (INPUT)
4-terminal test terminal is used to measure DUT by a 4-terminal test cable.
(13) LCD screen
480×272 dot-matrix LCD display
(14) Soft key area
When the cursor stays in different area, the soft key area will display different function.
(15) POWER
Power switch.
2.2 Introduction to Rear Panel
Figure 2-2 shows the rear panel of ST2523.
RS-232C
DEVICETRIGGER
GPIB HANDLER
!
TO AVOID ELECTRIC SHOCK,
THE POWER CORD PROTECTIVE GROUNDING
CONDUCTOR MUST BE CONNECTED TO GROUND.
DISCONNECT POWER SUPPLY BEFORE
REPLACING FUSE.
WARNING
FUSE
220V/50Hz 80VA T1AL 250V
~
RATING
贴标签
1 2
5 4 3678
Figure 2-2 Rear Panel
(1) GPIB Interface (Option)
The GPIB interface is used to communicate with PC and further construct a GPIB test system.

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(2) HANDLER Interface
Through HANDLER interface, an automatic test system can be conveniently constructed to realize auto test.
ST2523 will output bin comparator result signals and handshake signals by this interface, meanwhile, “start up”
signal will also be sent to the instrument by it.
(3) RS232C Serial Interface
It realizes the serial communication of the instrument with PC.
(4) USB Interface
PC can remotely control ST2523 through USB DEVICE.
(5) TRIGGER
It is used to externally trigger signals. In this mode, user can apply footswitch (option) to trigger measurement.
(6) Power Socket
It is used to input AC power.
(7) Ground Terminal
This terminal connects the instrument chassis thus to protect or shield ground connection.
(8) Nameplate
It shows the instrument model.
2.3 Display Zones
ST2523 adopts 24 bits 4.3-inch LCD screen with a resolution of 480×272.
The display screen is divided into the following zones, as shown in figure 2-3.
Figure 2-3 Display Zones
1) Main Menu
Indicate the name of the currently displayed page.
2) Function
Test parameters can be modified in this zone.

ST2523 Series Operation Manual Ver1.2
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3) Measurement Result
Indicate primary and secondary parameter results.
4) Prompt Information
Indicate all prompt information.
5) Soft keys
Indicate function menu corresponding to the cursor zone.
2.4 Keys and Their Corresponding Display Pages
2.4.1 Main Menu Key: [DISP]
Press (DISP) to enter into display homepage. Selectable functions in this page are shown as follows:
<MEAS DISP>
<BIN DISP >
<TRACE DISP>
<STATIS DISP>
2.4.2 System Setup Key: [SETUP]
Press this key to enter into the system setup page. System setup and file list are in this page.
<MEAS SETUP>
<BIN SETUP >
<TRACE SETUP>
<SYSTEM SETUP>
2.5 Basic Operations
Basic operations of ST2523 keys are as follows :
Choose the desired page by menu keys [DISP], [SETUP] and soft keys.
Move the cursor to the destination zone by arrow keys ([←] [↑] [→] [↓]).
The soft keys, corresponding to the current cursor, will be displayed in the soft key zone. Press the soft key
to choose the desired interface.

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2.6 Starting Up
Ensure the power earth (ground) wire is grounded, plug into a 3-wire power socket. Press down the power
switch on the bottom left corner of the front panel, the instrument will be started up and a boot screen will be
displayed.
Figure 2-4 shows the boot screen of ST2523, indicating product information such as instrument trademark,
model, and version.
Figure 2-4 ST2523 Boot Screen
If the password protection is enabled, you will be asked to input your password. After inputting your password,
press [ENTER] to enter into the main menu page.
N
N
No
o
ot
t
te
e
e:
:
: This series of products have enabled password protection and the default password is 2523. You can
reset the password by yourself. See the password function on the <SYSTEM SETUP> page for
more details.

ST2523 Series Operation Manual Ver1.2
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Chapter 3 Basic Operations
3.1 <MEAS DISP>
Press down [DISP], the <MEAS DISP> page will be displayed in the screen, as is shown in figure 3-1.
Figure 3-1 Measurement Display
The following measurement parameters can be set in this page.
Measurement Function (FUNC R-X)
Impedance Range (Range(R) AUTO)
Voltage Range (Range(V) AUTO)
Measurement Speed (Speed MED)
File Management (FILE)
Other Tools (TOOLS)
Soft Keys (used to enter into operation pages)
The following information will be displayed in the display zone of measurement result/ conditions. These
conditions can be set on pages of <MEAS SETUP> and <MEAS DISP>.
Voltage/ current monitoring of DUT (Vm,Im).
ON/OFF status indicator of the REL function. (ON indicates that the current displayed value has been
dealt with by the relative function).
ON/OFF status indicator of SHORT function (ON indicates that the current displayed value has been
dealt with by the short function.)

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3.1.1 Measurement Functions
Measurable parameters on ST2523 are as follows:
Primary Parameters
|Z| (modulus of impedance)
R (resistance)
L (inductance)
V (voltage)
Secondary Parameters
Q (quality factor)
R (ESR)
X (reactance)
r (radian)
Ө (phase angle)
Primary and secondary parameters are respectively displayed in two lines in the form of large characters. The
upper line indicates the primary parameter, while the lower line shows the secondary parameter.
Operation procedures of measurement setup:
1) Move to the FUNC zone, the following information will be displayed on the right side of the screen.
R
R-V
V
R-Q
more 1/3
2) If the desired parameters are not displayed in this page, press more 1/3 to display them.
L-Q
L-R
R-X
C-D
more 2/3
3) If the desired parameters are not displayed in this page, press more 2/3 to display them
Z-θd
Z-θr
more 3/3
Press more 3/3, soft keys under procedure 1) will be displayed. If some desired measurement
functions are forgotten to choose, reset them by repeating procedures 1), 2) and 3)
3.1.2 MEAS RANGE
There are two options in MEAS RANGE, which can be selected according to the impedance and the DC
voltage of DUT.
ST2523 series has 6 AC impedance measurement ranges: 30mΩ, 300mΩ, 3Ω, 30Ω, 300Ω, 3kΩ.
ST2523 has 2 DC voltage measurement ranges: 6V, 60V.
ST2523A has 2 DC voltage measurement ranges: 30V, 300V.

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Operation procedures are as follows:
Move to the RANGE zone, the following items will be displayed:
AUTO Set the range mode as auto.
HOLD Switch the range mode from auto to HOLD. Since the range mode is set to HOLD, the
current measurement range will be locked and displayed in the RANGE zone.
↑(+) Increase the range.
↓(-) Decrease the range.
3.1.3 Measurement Speed
The measurement speed of ST2523 is decided by the following factors:
Integral sampling period
Average times (measurement times)
Measurement delay time ( a time starting from the measurement start-up to the measurement
beginning)
time showing measurement result
Four measurement speeds are available on ST2523: FAST (fast, approx. 50meas/ sec), MED (medium, approx.
10meas/ sec) and SLOW (slow, approx. 6.25meas/ sec).
Operation procedures are as follows:
The measurement result is displayed as a 5-digit number in decimal point floating mode. The impedance
parameter is displayed in fixed decimal point mode, while the inductance parameter is displayed in floating
decimal point mode.
1) Move the cursor to the SPEED zone, the following items will be displayed in the soft key zone.
FAST (fast)
MED (medium)
SLOW (slow)
N
N
NO
O
OT
T
TE
E
E:
:
: Measurement speed: when the measurement speed is selected as SLOW or MED, the measurement
result will be a 5-digit number, while in FAST speed it is a 4-digit number.
3.1.4 File Manage
1) INTER File
2) EXTER File
3.1.5 TOOLS
Operation procedures are as below:
Move to the TOOL zone, the following menus will be displayed in the soft key zone.
REL OFF (Relative function on /off. When OFF is selected, Relative function will be disabled; when
ON is selected, Relative function will be enabled.)
SHORT OFF (Choosing OFF to turn off the short function, while choosing ON to turn it on.)
SHORT (Execute the short zero adjustment)
DISP ON (Display the measure result on full screen mode. Press any key (except TRIGGER) to exit.)

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Start Save/Stop Save: the current measurement results will be saved to a U disk.
Until a U disk is inserted, the save function is disabled.
N
N
NO
O
OT
T
TE
E
E:
:
: Save operation: Be sure to press “Stop Save” to stop saving data after “Start Save” is pressed,
otherwise data will be lost.
SHORT zero adjust: When this key is used for short clearing, the test fixture must be shorted
correctly, or it will result in relative data error and finally it will deviate from the accurate
measurement result. The correct short connection is shown as follows.
3.2 <BIN DISP>
Press the [DISP] button and press BIN DISP in soft key area to enter into the <BIN DISP> page, as is shown in
figure 3-2 and 3-3.
Figure 3-2 Bin Display Page

ST2523 Series Operation Manual Ver1.2
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Figure 3-3 Compare Display Page
Mode: Compare and BIN. Compare: compare function of DUT; BIN: judgment of good or bad
products.
Sound: NG, GD and OFF. NG: not good product sound; GD: good product sound; OFF: sound is off.
COMP: ON means the compare function is open; OFF means the compare function is not open.
LOAD BIN: BIN1~9. The measurement result will be compared with high and low limits of the
current loaded bin, and then comparing result will be displayed.

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3.3 <TRACE DISP>
Press TRACE DISP in soft key area to enter into <TRACE DISP>. Touch TOOL, the following page will be
displayed.
Figure 3-4: Trace Display Page
Move to TOOL, the following items will be displayed in the soft key zone:
SCAN START: Press [SCAN START], trace scanning will start; when [SCAN STOP] is displayed and
press it, trace scanning will stop.
TRACE A+B: Press this key, A+B, A, B will be alternately displayed. A indicates that the primary
parameter trace will be displayed; B, secondary parameter trace will be displayed; A+B, traces of
primary and secondary parameters will be displayed simultaneously.
CURSOR: Press this key, the measurement result will be displayed. Touch the screen or press arrow
keys to move cursor.
Max-Min ON: Press [Max-Min ON], maximum and minimum values of primary and secondary
parameters will be displayed after trace scanning. When [Max-Min OFF] is displayed, this function
will be disabled.

ST2523 Series Operation Manual Ver1.2
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3.4 <MEAS SETUP>
Press SETUP to enter into the <MEAS SETUP> page shown in figure 3-5.
Figure 3-5 Measurement Setup Page
The following items can be set in the <MEAS SETUP> page.
FUNC R-X: Move the cursor to it, and then you can choose the desired parameters in the soft key
zone.
Range (R):AUTO : AUTO, HOLD, ↑, ↓will be displayed in the soft key zone by touching this key.
Press one of them, resistance range will be automatically selected or locked.
Range (VDC):AUTO: Move the cursor to it, AUTO, HOLD, 6V/60V (ST2523), 30V/300V
(ST2523A) will be displayed in the soft key zone. Press one of them, voltage range will be
automatically selected or locked. The voltage range can be switched between 6V/60V and 30V/300V.
Speed:MED: Move the cursor to it, FAST, MED, and SLOW will be displayed in the soft key zone.
By touching them, the measurement speed can be toggled among them.
Trig:INT: Move the cursor to it, INT, MAN, EXT and BUS will be displayed in the soft key zone.
The corresponding functions are respectively auto measurement mode, manual trigger measurement
mode, external trigger measurement mode and bus trigger measurement mode.
AVG:1: Enter the desired number through the numerical keyboard ranging from 1 to 255, and then
press X1 to finish inputting.
Vm:OFF: Move the cursor to it, ON and OFF will be displayed in the soft key zone. The
measurement voltage across DUT will be displayed in the <MEAS DISP> page when ON is selected;
when OFF is selected, it will be turned off.
Im:OFF: Move the cursor to it, ON and OFF will be displayed in the soft key zone. The measurement
current through DUT will be displayed in the <MEAS DISP> page when ON is selected; when OFF is
selected, it will be turned off.
DEV A:OFF: Move the cursor to it, OFF, △ABS and △% will be displayed in the soft key zone.

ST2523 Series Operation Manual Ver1.2
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When OFF is selected, the primary display value is the primary measurement value; when △ABS is
selected, the primary display value is the primary measurement value minus the primary reference
value; when △% is selected, the primary display value=[(the primary measurement value-the primary
reference value)/ the primary reference value]*100%.
DEV B:OFF: Move the cursor to it, OFF, △ABS and △% will be displayed in the soft key zone.
When OFF is selected, the secondary display value is the secondary measurement value; when △ABS
is selected, the secondary display value is the secondary measurement value minus the secondary
reference value; when △% is selected, the secondary display value=[(the secondary measurement
value-the secondary reference value)/ the secondary reference value]*100%.
REF A /REF B: Primary and secondary reference values. Move the cursor to it, INCR++, INCR+,
DECR-, DECR-- and MEAS will be displayed in the soft key zone. When MEAS is selected, primary
and secondary measurement values of the current DUT will be displayed in REF A and REF B. Press
INCR++, INCR+, DECR-, DECR-- keys and the value will be increased and decreased. You can also
input the desired value through the numerical keyboard and press the corresponding soft key to
confirm.
LINE:50Hz: Move the cursor to it, 50Hz and 60Hz will be displayed in the soft key zone. User
should adopt a power source whose frequency is identical to that of the inlet power supply, thus to
decrease the measurement error causing by the noise of power frequency.
Delay:0ms: Enter the desired value through the numerical keyboard ranging from 1 to 60s, and then
press X1 to finish inputting..
3.4.1 TRIG
ST2523 has four trigger modes: INT (internal trigger), MAN (manual trigger), EXT (external trigger) and BUS
(bus trigger).
When Trig is set to the INT mode, ST2523 will automatically make continuous measurement.
When Trig is set to the MAN mode, ST2523 will make a measurement by each press of [TRIGGER] button on
the front panel.
When Trig is set to the EXT mode, ST2523 will make a measurement at each time the HANDLER interface
receives a trigger signal. In addition, by controlling the EXT HOLD footswitch on the rear panel,
trigger-controlling measurement will also be done.
When Trig is set to the BUS mode, the trigger measurement will be done through BUS.
3.4.2 Delay
Use the numerical keyboard to input the measurement delay time starting from 1s to 60s with ms as the unit.

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3.5 <BIN SETUP>
Press BIN SETUP in soft key area to enter into the <BIN SETUP> page shown in figure 3-6.
Figure 3-6 Limit Setup
Comparator functions can be set in this page. ST2523 can set 9 groups of nominal and limit values for primary
and secondary parameters.
Introduction to <BIN SETUP>
MODE: Move the cursor to it, %TOL and ABS TOL will be displayed in the soft key zone.
When %TOL is selected, upper and lower limits will be displayed in the percentage error mode; When
ABS TOL is selected, upper and lower limits will be displayed in the absolute value error mode.
COMP: COMPA and COMPB for primary and secondary parameters. COMPA (ON: the bin
comparison function of primary parameter will be enabled; OFF: the bin comparison function of
primary parameter will be disabled) and COMPB (ON: the bin comparison function of secondary
parameter will be enabled; OFF: the bin comparison function of secondary parameter will be
disabled).
NOM.A /NOM.B: Nominal value is only valid in %TOL mode. Nominal value for primary and
secondary parameters (NOMA and NOMB). You can input nominal values of primary and secondary
parameters through the numerical keyboard.
HIGH/LOW limit: High and low limit for primary and secondary parameters. According to different
modes, the value of high and low limit can be respectively percentage value (-100~100) and absolute
value (-10000~10000).