Multi Protocol Analyzer


  • Records data in the USB drive
  • Battery Powered Handheld Troubleshooter for Field Testing
  • 5.7-inch TFT color display
  • Supports TTL, I2C, SPI, IrDA,
    CAN, LIN, FlexRay, LAN and USB
  • Mega Speed Mesurement
  • Supports Logic Analyzer Analysis and Analog Waveform Analysis
  • Outputs edited digital waveform.
» Información en español
LE-8200A : Japanese model ( contains Japanese manual )
LE-8200A-E : World wide model ( contains English manual )
The LE-8200A is the top-level model of battery-powered communications protocol analyzer. The LE-8200A has an enlarged display in response to an increasing demand without degrading the excellent portability of the LE Series.
It is ideal for development tests of communications systems and industrial equipment, as well as for after-sale services and communication trouble analysis.
LE-series have been used in the industries of railways, aviation, and a variety of manufactures for few decades where reliability is very important. With optional kits, it can be used for developing network, in-vehicle, PC peripheral, embedded devices. Unlike the software based analyzers, it cannot be affected by the capability of PC and can be used in the place where PC is not allowed.

Supports TTL, I2C, SPI, IrDA, CAN ,LIN, FlexRay, LAN and USB

It works as a serial port monitor for RS-232C/422/485 with its standard measurement board.
By exchanging the measurement board, it also supports various types of protocols such as UART (of 1.8V/2.5V/3.3V/5V power supplies TTL level), I2C, SPI, CAN (widely used for automotive vehicle-bus), LIN, FlexRay, LAN (Ethernet, which is recently used for Internet of Things (IoT)), USB2.0 (now used for standard port of smart phones).

Expansion kits supports TTL, I2C, IrDA, CAN and LIN
Simply pull out the interface board from the measurement unit and replace it with an expansion board for another protocol.

See more expansion kits

5.7-inch Large-sized Color TFT LCD

The large-sized LCD is an easy-to-understand color display showing a flow of communications protocol and data transmitted or received, thus greatly improving the efficiency of measurement data analysis.
Furthermore, the display of an English or Japanese guide accurately supports high-level measurement over communications.

The monitor function exactly records and visualizes communications data

The line monitor function, like a sniffer, allows the recording of telegrams and provides an easy-to-understand large-sized display without affecting the communications lines.
This function makes it possible to grasp the conditions of transmission and reception, thus greatly shortening the required time of troubleshooting.
As a standard feature, the LE-8200A supports a variety of communications standards, such as binary synchronous communications (BSC) for character-synchronous transmission, and high-level data link control (HDLC) for bit-synchronous transmission as well as asynchronous communications that are widely used for PC peripheral and microcontroller applications.
By adding an optional expansion kit, the LE-8200A will support many more communications standards.

online demo Provide some short demonstrations of analyzer uses.
<Example of connection for online monitoring>
<Example of ASYNC communications>
<Example of display in each frame>
<Example of display with line state>
<Example of PPP translation>
<Example of HDLC communications>
<Example of X.25 protocol translation>
Display of Two Divided Areas for Ease of Comparison
[Example of two divided areas]
The display of two divided areas is convenient for the comparison of normal and abnormal communications log records.
It is possible to scroll the two divided areas on the upper half and lower half of the screen individually or simultaneously, which allows the comparison of the two communications records efficiently.
Freely Set with Four Effective Digits for Transmission and Reception
[Example of communications protocol settings]
Using high-precision DPLL technology for open baud rate support, transmission and reception speeds can be separately set with 4 effective digits to a baud rate range between 50 bps and 4 Mbps.
The required conditions of transmission or reception data, such as the bit configuration, bit transfer sequence, polarity, and modulation format can be freely selected to meet many test situations.
Support Modbus protocol and PROFIBUS protocol for field bus
< Example of usage of analyzer for Modbus communication >
Diverge Modbus communication on RS-485 line and measure by the analyzer.
It can detect 3.5 character time of idle state as frame gap and separate message frames properly even in the high-speed Modbus communication.
Support Modbus-ASCII and Modbus-RTU telegram structure. It automatically starts the LRC/CRC frame check according to the data format, and know the errors and error triggers. HEX display and also translation display of address and function are available.
< Modbus configuration >
< Modbus in HEX >
< Modbus in Translation display >

It supports monitoring and simulation of PROFIBUS which is widely used for industrial fieldbus (with the firmware Ver1.18 or later). Setting the protocol to PROFIBUS, with the communication condition which follows the standard of PROFIBUS, it judges the FCS of PROFIBUS standard (which varies depending on the data format) by detecting idle time of 33 bit or more and separating PROFIBUS communication frames.

You can also observe the flow of the communication by PROFIBUS translation display or dump display in addition to the normal monitoring display.

Note: The communication speed defined in PROFIBUS standard is 9600bps to 12Mbps, however the standard firmware of LE-8200(A) supports up to 4Mbps. To monitor faster communication such as 6Mbps or 12Mbps, OP-FW12GA (to be released in Jan. 2015) is needed.

< PROFIBUS configuration >
< PROFIBUS in Translation display >
User Defined Translation Display

User defined translation function translates frame data at specified position to the user defined characters or numbers. It helps users to analyze the unique protocol format.

< Previous Display >
< User Defined Translation Display >
High-precision Time Stamp Recorded at 1-μs Intervals

The time stamp shows the transmission or reception time of the head data of each communications frame. In addition to the Hr/Min/Sec time stamp, the LE-8200A incorporates Year/Mon/Hr/Min/Sec time stamp. Also, there is a high-precision time stamp that records the elapsed time of transmission or reception at minimal 1-μs intervals from the start of measurement.

This function has widened the range of applications from the narrowing down of data on a specified time-and-date basis and delicate timing basis. In addition, it is possible to judge each frame in asynchronous communications by specifying an idle time of 1 to 100 ms or frame end data.

[ Real-time Time Stamp ]
Hr/Min/Sec Recording Type
(compatible with lower models)
18 14:27

Expansion Recording Type
TM 12/01
24 06:10
TM 03/29
TM 10 22
[ Elapsed Time Stamp ]
5seconds 398milliseconds 614microseconds

Idle time display is ideal for checking the response time and timeout of transmission or reception a a glance.

[ Idle Time Display ]
2.78seconds 0seconds 046milliseconds
Support long hour record in the USB flash drive and CF card [ New Function ]
<Insert USB flash drive into the analyzer>

Previous models only support saving data into the CF card.
This model supports saving data into the USB flash drive.
Measured data can be used in the PC easily.

Long Recording Time Allowing Rolling back to Points of Communications Failures
The LE-8200A has 100MB internal capture memory that gains high-speed access to megaspeed communications, and is provided with ring and fixed buffer modes.
The user can select the ring buffer mode for endless recording or the fixed buffer mode to stop recording automatically when the memory is full. Furthermore, the LE-8200A incorporates an auto save function that makes it possible to save the monitored content of internal memory on a high-capacity external memory in a specified file size continuously.
This is useful for identifying communication failures which occur at rare intervals.
Applicable transmission speed Continuous recording time reference *1
Main memory only 16GB external memory*2 64GB external memory*3
9600bps Approximately 6 hours Approximately 38 days Approximately 154 days
115.2Kbps Approximately 30 minutes Approximately 78 hours Approximately 312 hours
1Mbps Approximately 220 seconds Approximately 10 hours Approximately 20 hours
*1 In the case of full-duplex transmission of 1-kilobyte data at 1-millisecond intervals,
both transmission and reception data will consume 4-byte memory for each capture.
*2 With the optional CF-16GX used.
*3 With the optional CF-64GX used.
Supporting Logic Analyzer Analysis and Analog Waveform Analysis

The logic analyzer, which digitally displays the waveforms of communications line timing, operates at
a sampling rate up to as high as 100 MHz. Furthermore, this feature realizes the simultaneous display
of 12 lines by making use of the large-sized screen.
Besides, the adoption of function keys ensures the operation of the time cursor with ease.
Furthermore, if the OP-SB85L optional expansion kit is used, measurement of analog voltage waveforms at a maximum rate of 40M samples per second will be possible.
Therefore, you will be able to realize detailed waveform observation without carrying a heavy general-purpose measuring instrument when you are on a business trip.
These functions help to identify hardware problems.
You can also use it for educational purposes, comparing documents for communications protocol.

[Example of Logic Analyzer Analysis]
[Example of Analog Waveform Analysis]
Output edited digital data freely [New function]

Output edited waveform data measured by logic analyzer function.
It is useful for having error finding tests at various timing.

Degital waveform edit
Left shift The signal on the right side of the cursor will be deleted for 1 clock and the signals after it will be shifted to left.
Right shift A signal which is the same as the one under the cursor will be inserted for 1 clock and the signals after it will be shifted to right.
Invert The logic of the signal after the cursor will be inverted.
[ Degital waveform edit ]
Degital waveform output

Output clock can be selected from 10n sec. to 1m sec. (16 levels). For instance, after importing and editing a waveform data captured by logic analyzer monitoring mode of 10Mhz (100n sec.) sampling clock, by transmitting it with output clock of 20n sec. you can transmit the test data 5 times faster than original communication speed.

Trigger Function with Detection Capability Reinforced Twice
Trigger 4

Trigger 5

The trigger function controls the operation of measurement when the function detects specific communications status.
Conventional models have four combinations of trigger conditions and trigger actions.
On the other hand, the LE-8200A is provided with eight combinations for ease of making settings that are more flexible.
This function not only enables the detection of eight types of conditions simultaneously but also makes it possible to detect particular conditions in sequence.
Complicated communications events can be precisely grasped.

[Contents of trigger settings]
Trigger 0 External trigger output in case of error generation .
Trigger 1 Saves the data before and after idle time on the external memory when the idle time exceeds the set value.
Trigger 2 Starts timer 0 when the specified signal line is 1.
Trigger 3 Stops timer 0 when the specified signal line is 0.
Trigger 4 Enables trigger 5 when start flags 01h, 02h, 03h, and F1h or 01h, 02h, 03h, and F3h are detected in sequence in SD.
Trigger 5 Stops measurement immediately when 58h, 59h,
5Ah, arbitrary 2-byte data, and the end flag are detected in sequence in RD.
Trigger 6 Stops measurement when timer 0 coincides with the set value.
Voltage Measurement of Communications Line with Ease
[Example of analog & delay time measurement]
With the feature of delay time measurement, a period of change of the communications control line from the present state to another can be measured at a 0.1-ms resolution.
The feature is added with a function to measure the maximum, minimum, and present voltage amplitudes of SD, RD, DTR, and external EXT signals over RS-232C.
This allows ease of the voltage amplitude measurement of wiring in connectors where the probes of testers cannot reach smoothly, thus contributing to the investigation of communications trouble caused by an insufficiency in the amplitudes of signals resulting from a circuit voltage drop.
Graphic Display of Hourly Communications Status
[Example of graphical display of statistical analysis]
This statistical analysis feature is used to measure the volume of communications and the number of occurrence times of specific communications status for a specified period (1-240 min. or 1-240 sec.) with the results graphically displayed. Condition 0 and condition 1 of the trigger function can be specified as target items.
Therefore, it is possible to grasp not only the change of communications traffic (the rate of line usage) but also the number of transmission and reception times of specific data strings and the occurrence frequency tendency of errors on a time zone basis.
Furthermore, the auto range display with increased graphic resolution allows ease of seeing slight changes.

Simulation function provides the actual operating environments

[Example of connection for simulation]

With the simulation feature, LINEEYE protocol analyzers act as the counterpart to the target device and perform transmission and reception tests according to protocol.
Even in the early stages of development when matching devices are not available, it provides six types of simulation modes.
Error handling process can be checked by sending data with parity errors. Margins can be evaluated by intentionally shifting communications speed.
For example, test the 9600bps target device at 9840bps speed. In addition, data transmission can be linked with the changes in the signal lines, and an automatic control of RS-485 transmission driver IC is supported.

Furthermore, it offers half-duplex simulation mode, which will be useful for communication test of half-duplex RS-485. For example, when a communication test uses only SD line, it can sort the sending data of the analyzer to SD line and the receiving data from the opposite device to RD line. This allows you to execute communication tests which use trigger function or instruction of program mode.

[Data table setup]
The MANUAL mode allows you to send the data registered in transmission table which corresponds to the "0" to "F" keys. The data can be set with one press of a key.
While checking replies from a unit under development with the monitoring feature, you can easily and simply test the communications process.
You can also send fixed data by registering it under a key combination of the SHIFT and "0" to "D" keys, as well as turn RTS/CTS and DTR/DCD signal lines on/off with the SHIFT and "E"/"F" key combinations.
online demo
[BUFFER mode setup]
In the BUFFER mode, you can select between transmission and reception, and send transmitted or received data that has been captured in the buffer using the unit's monitoring capabilities, as simulation data without requiring further manipulation.
This mode is effective in conducting reproducibility tests using the same data as that monitored under actual communications conditions.
FLOW mode
[FLOW mode setup]
Flow control can be simulated on the transmission and reception-lines using X-on/off flow control or the control line handshake.
In the transmission mode, up to 16 cycles of data from transmission start until a generated interrupt request can be displayed.
In the reception mode, you can set the number of received data cycles until a transmission interrupt request is generated, as well as the time until the transmission resume request is generated.
ECHO mode
[ECHO mode setup]
In the ECHO mode, LINEEYE protocol analyzers internally return received data.
Buffer echo to send back data by a frame, character echo to send back data by a character and loop back echo to return by the hardware can be selected.
It is used to test display terminals and communications terminals.
[POLLING mode setup]
The POLLING mode simulates the slave and master units in multidrop (1:N connection) polling protocols. In the slave mode, the LINE EYE protocol analyzers check the number of received frames that are assigned their address and whether errors occur or not, replying with user-set data.
In the master mode, they send polling messages to 32 slave units, and check and display replies from each slave.

By creating a purpose-specific command program, the communications protocol can be flexibly simulated alongside condition monitoring.
The program is created using the menu selection, so it is easy to master.

[PROGRAM mode setup]
027: Label20
028: Wait new receiving frame
029: Transmit data table 08
030: If receiving [CR, LF, O, K, CR, LF], jump to label 025
031: Set register3 +1
032: If value of register3 is equal to register0, jump to label 030
033: Jump to label 020
034: transmit [SX, 1, 2, 3, A, B, C, EX]
[ Dedicated Commands Table ]
Command Operation
NOP No Operation.
SEND CHR Data communications up to 8 characters.
SEND TBL Data communications of the specified transmission data table.
SEND REG GRP Data communications of the transmission data table specified by a register value.
SEND BUF Transmits data in the frame buffer.
SEND KEY GRP Transmits data in the transmission data table corresponding to keystroke.
SEND DA +REG Transmits data of the data array specified by additional value of preset value of the data array number and the value specified by register number.
SEND BRK Transmit a break signal (for only ASYNC)
SEND FRM Transmits a X.25 frame.
WAIT CHR Waits for the particular character string of up to 8 characters to be received
WAIT FRM (CLR/NOCLR) Waits for a frame to be received.
WAIT TRG Waits for a specified trigger condition to be specified.
WAIT TM Waits for a specified period of time.
WAIT KEY Waits until one of the keys from 0 to F is pressed.
WAIT LN = Waits until the logical values of the control lines meet with the setting.
WAIT MLT Executes multiple WAIT commands. If one WAIT command is satisfied, all WAIT commands will be released.
GOTO L Jumps to a specified label number.
IF CHR L Branches to a specified label number if the particular character string is included in the frame buffer.
IF TRG L Branches to a specified label number if the trigger conditions are satisfied.
IF TM L Branches to a specified label number if the timer exceeds the setting value.
IF CT L Branches to a specified label number if the counter exceeds the setting value.
IF LN = L Branches to a specified label number if the logic values of control lines meet with the setting.
IF REG L Branches to a specified label number if the inequality relation between registers is satisfied, or register value is matched with the constant value.
IF TBL L Branches to a specified label number if it is satisfied with data of table specified by the table number.
IF DA +REG L Branches to a specified label number if data in the frame buffer is satisfied with data in the data array specified by the additional value, which is the sum of the designated value of a data array number, and the value designated in the register number.
IF FT L Branches to a specified label number if a frame stored in the reception frame buffer is matched with the specified type.
CALL L Jumps to a subroutine marked with a specified label number.
RET Returns from the subroutine.
SET REG Sets a value to register, or increments or decrements the register.
SET LN = Sets a value of the control line.
SET TM Sets a value to the timer, or controls the start, the stop or the restart of the program.
SET CT Sets a value to the counter, or increments or resets the counter.
SET BZ Sets the buzzer.
SET OUT Outputs a pulse to the trigger out terminal.
SET DA Sets data to the data array.
SET DV REG Sets the specified number of characters on contents in register as a character string to the data array.
SET MOD (8/128) Sets a frame modulo for X.25 program simulation.
SET AD Sets the address field of a frame transmitted by SEND FRM command.
SET VS Sets or changes the value of V(S) state valuable.
SET VR Sets or changes the value of V(R) state valuable.
SET PF Sets the P/F bit value of a frame transmitted by SEND FRM command.
SET DP Sets or changes the data pointer.
INT TRG 0 L Jumps to the subroutine marked by the specified label number when the condition of trigger 0 is satisfied.
RETI L Returns from subroutine started by the INT command.
DISI TRG 0 Disables an interruption.
STOP Stops the running of simulation operation.
L Enters a label number in a range from 0 to 999 in decimal notation.
[ Special Register ]
ST Value of WAIT command which releases the WAIT status of the WAIT MLT
KY Value (0 to 15) corresponds to the [0] to [F] keys, which are
inputted while executing the WAIT KEY command.
DL Number of data in the received frame executed by WAIT FRM command.
DT Data of received frame executed by WAIT FRM command.
AD Address value of received frame executed by WAIT FRM command.
NS N(S) field value of received frame executed by WAIT FRM command.
NR N(R) field value of received frame executed by WAIT FRM command.
PF P/F field value of received frame executed by WAIT FRM command.

BERT(Bit Error Rate Test)

[Example connection for BERT]

BERT function enables you to evaluate parameters (bit error count, block error count) conforming to ITU-T G.821 Notification, hence enabling error rate evaluation and fault point identification.
Elaborate test patterns and functions such as bit error forced interrupt are comparable to dedicated equipment.

online demo

[Contents of BERT measurement]
Savail Available measurement in seconds 0 - 9999999(sec)
Receive bit Effective bits received 0 - 9999999 - 9.99E9
Error bit Error bit count 0 - 9999999 - 9.99E9
Bit error rate Bit error rate 0.00E-0 - 9.99E-9
Sync loss SYNC loss count 0 - 9999
Receive block Block error count 0 - 9999999 - 9.99E9
Error block Block error rate 0 - 9999999 - 9.99E9
Block error rate Effective blocks received 0.00E-0 - 9.99E-9
Error second Error second 0 - 9999999(sec)
%E.F.S Normal operation rate 0.000 - 100.000(%)
Many of test patterns
[Example of BERT setting]
Evaluation is possible in ASYNC or SYNC mode, by specifying measurement period or test pattern.
Three patterns are added for longer measurement period.
Graphs for specified measurement period
[Example of BERT measurement]
Records the results of more than one specified measurement period by using repeat mode.
The movement of graph enables you to check the error rate easily.

PC Link

[ Example of Key Emulation ]

Capturing software for printout data (able to download from
LINEEYE website) makes it possible to utilize measurement data on the user's PC.

The LE-PC800G (option) enables remote control of LE-8200A, therefore displays measured data on the PC and records data on the HDD continuously. Furthermore, it is possible to display measured data saved in the memory card or USB flash drive (LE-8200A only), and convert data into text format.

It supports serial connections, USB connections, and LAN connections via serial-LAN converter, thus enabling remote measurement from distant place by multiple analyzers on the same network.

*1 The PC Link software is not provided with a USB cable. Prepare a USB cable if you intend to use USB connection.
The LE2-8V AUX cable provided to the analyzer is available in the case of serial connection.
*2 LE-8200A/LE-8200 can save data in the CF card.
An interface to read the CF card is required on the PC side.
*3 LE-8200A can save data in the USB flash drive.
*1 SI-60 is a LAN-serial converter supported by LE-PC800G. Target analyzer is identified by specifying IP address of SI-60 on the remote setting window of LE-PC800G.
*2 optional AUX cable for DSUB 25-pin(LE2-8C). Set the DTE/DCE switch of SI-60 to DTE.
Develop customer application
< Sample of the Library >

Acquires monitored data,
connection, measurement,
key-emulation in CSV format.

This library for LE-series is available for VisualC++ and Visual Basic.
It may shorten the time to develop customer application system linking with another software.

*:  This library is provided for free. However, any inquiries regarding to this library is chargeable service.
[ Example of function ]
LEConnect Connect to LE-series
LEGetSetup Acquire configuration of LE-series
LESetTable Set transmission data/table
LEGetProgram Acquire program/data
LEStartMeasure Start measurement
LEGetMonitorData Acquire monitored data
LEEmulationKey Emulate key operation of LE-series

This library is for controlling some of the functions in the LE-series from user application.
Acquires monitored data after the measurement.

To use all functions of LE-series on the PC, use the PC link software (LE-PC800G).

[ Add real time library ]

Real time library is now available from LINEEYE web site. It is useful when developing your own inspection system etc.

*:  Refer to "readme" file for instruction attached to the library.
This library is provided for free. However, any inquiries regarding to this library is chargeable service.

Full of Convenient Functions for Efficient Measurement

Auto RUN / STOP Function
[Example of auto RUN/STOP setting]

The screen on the right-hand side is set to make
measurement from 5:00 a.m. to 7:30 a.m.
automatically on a daily basis.
By making start and end time settings, automatic measurement will be possible for the specified period.
This feature is useful for unmanned measurement with only an analyzer left on site.
Monitor Condition Auto Setting

The communications conditions of lines, such as the communications speed and framing of the lines, can be automatically detected if relatively large volumes of communications data with few errors flows in the lines.
This is effective for monitoring lines of unknown communications conditions.
* Accurate auto settings will not be possible for small volumes of communications data or data that contains many errors.

File Printout Function

The continuous printing of measurement data as well as the printing of screen display is possible in an appropriate format selected from a wide variety of formats according to the display mode of the screen.
Printing images of text files and bitmap files can be saved on the external memory if the destination of output is specified as files, thus saving paper resources and making it possible to utilize data on personal computers at the same time.

< Text Conversion >
*=[LE-8200A]====[2014-04-02 10:02:15]=*
* Model     : LE-8200A                *
* Version   : 1.14                    *
* Extension : Standard                *
* Serial No.: ********                *
* Start time: 2014-04-01 17:44:48     *
* Stop time : 2014-04-01 17:46:12     *
*  PROTOCOL: MODBUS                   *
*  SPEED   : 19200                    *
*  MODE    : RTU     PARITY  : ODD    *

SD:000061499   3  Read holding registers   G 006B0001
SD:000069455   3  Read holding registers   G 020000
SD:000217404   2  Read holding registers   G 006B0001
SD:000225317   2  Read holding registers   G 020000
SD:000373416   3  Diag/Query data          G 55AA
SD:000381369   3 *Diagnostics              G 01
SD:000997404   3  Read holding registers   G 00B00002
SD:001005428   3  Read holding registers   G 0400000000
SD:001153312   2  Read holding registers   G 00B00002
SD:001161366   2  Read holding registers   G 0400000000
SD:001309380   3  Read holding registers   G 00AA0002
SD:001317254   3  Read holding registers   G 0403F20000
SD:001465334   2  Read holding registers   G 00AA0002
SD:001473117   2  Read holding registers   G 0403F30000
SD:001621395   3  Read holding registers   G 006B0001
SD:001629077   3  Read holding registers   G 020000
SD:001777303   2  Read holding registers   G 006B0001
SD:001784943   2  Read holding registers   G 020000
SD:002557313   3  Read holding registers   G 00B00002
SD:002565054   3  Read holding registers   G 0400000000
SD:002713325   2  Read holding registers   G 00B00002
SD:002721418   2  Read holding registers   G 0400000000
SD:002869390   3  Read holding registers   G 00AA0002
SD:002877381   3  Read holding registers   G 0403F30000
SD:003025242   2  Read holding registers   G 00AA0002
File Management Function
[Example of file management]

The file management feature makes it possible to save a number of test conditions and measurement data in PC-compatible format on the optional high-capacity external memory.
This functions supports file sorting and filtering, thus greatly improving file search performance.Moreover, the LE-8200A is safely designed.
Therefore, if an automatic backup is set, measurement data will be saved automatically on completion of measurement.


Firmware updating

The latest firmware with additional functions and improvements can be found on our website.
Support to new communications standards and new functions with no interface change will be available by simply updating the firmware.
When you download it to your PC, you can update the firmware over the provided serial cable.