PC-connectable protocol analyzer / Data logger

LE-200PF







●2-way operation of PC-connected protocol analyzer / logger
●Remote measurement from PC by Wi-Fi connection
●Supports measurement of arbitoral speed (4 significant digits)
●Continuously recording for a long time on the HDD of PC or the SD card in the unit
●Power failure countermeasure circuit to ensure recording to SD card
●Unattended measurement with specified time by RTC (real-time clock)
●Trigger function to control external signal output terminal and user-defined LED
●Simulation function that can send registered character strings by simple operation
●Waveform display similar to a logic analyzer is possible
●Small palm-sized body

LE-200PF is a small and lightweight communication protocol analyzer equipped with a communication data logger function that can continuously record communication data on an SD card for long periods of time. Like the previous multi-protocol model LE-200PR, it can analyze many communication standards and also supports logic analyzer waveform display.

The differences with LE-200PR are as follows.
Model number LE-200PR LE-200PF
Maximum measurable communication speed 1Mbps 1.544Mbps
Maximum usable SD card capacity 16GB 32GB
Logic analyzer function None Up to 20Msps
Compliant standards CE (Class A)
EN 61326-1 : 2013
CE (Class A)
EN 61326-1 : 2021

Two Types of Operations Depending on Usage Situation.

For normal development, you can use the included PC link software LE-LINK20F to use the device as a PC-connected protocol analyzer in remote mode to maximize the functionality of your computer. In addition, when continuous measurement is required in a harsh site where a computer cannot be brought in, the device in the logger mode can be used as a communication data logger that can operate independently without a PC.

< Remote mode (With PC) >


Supports USB connection and Wi-Fi connection. Wi-Fi connection supports connection via an access point or ad hoc.
Note: Wi-Fi function is available only in Japan, EU, USA, and Canada.

< Logger mode (Without PC) >

Control multiple analyzers with one PC link software

Remote mode allows you to control multiple analyzers at the same time and analyze communication data from multiple points connected to the analyzers. You can display the measurement windows for each analyzer on a single computer screen and check the communication status.


Wi-Fi connection

In addition to the USB connection, it also supports remote monitoring via Wi-Fi connection. AP (access point) mode, in which the analyzer itself becomes a Wi-Fi access point, and STA (station) mode, in which it connects via nearby wireless access points, are available.

Note: Wi-Fi function is available only in Japan, EU, USA, and Canada.
< Remote mode (With PC) >

< Logger mode (Without PC) >



In addition, you can use the included utility software lefiledownload to check the communication log file recorded on the SD card via Wi-Fi without stopping the measurement operation in logger mode. This allows you to continue investigating communication lines with the analyzer alone, and check the timestamps of log files on your PC only when necessary to check communication records before and after a problem occurred.


[ Example of LE file downloader display screen ]

Supports RS-232C/RS-422/RS-485 (Standard Feature)

The device comes standard with RS-232C/RS-422/RS-485 interfaces, which are used widely in medical equipment and electronic products. RS-232C interface supports 11 lines including control lines and Sync transmission/reception clocks, and it is able to operate the control lines automatically at Simulation function. RS-422/485 interface is able to control the driver automatically at Simulation function.

■ Explanation of each part


■ Pin Assignment of Connector (DSUB 25pin)
Pin Signal Pin Signal
1 FG 14 -
2 RS-232C SD 15 RS-232C ST2
3 RS-232C RD 16 -
4 RS-232C RS 17 RS-232C RT
5 RS-232C CS 18 RS-422/485 TXDB+/TR+*2
6 RS-232C DR 19 RS-422/485 TXDA-/TR-*2
7 GND*2 20 RS-232C ER
8 RS-232C CD 21 -
9 +5VDC*1 22 RS-232C CI
10 RS-422 RXDB+*2 23 -
11 RS-422 RXDA-*2 24 RS-232C ST1
12 RS-422 RXCB+ 25 (DC IN)*3
13 RS-422 RXCA-    
*1: A terminal-supplied power from analyzer. ON/OFF switchable.
*2: LE-5TB is useful for connecting the signals.
*3: For the remote mode (Wi-Fi- connected) or logger mode you can supply the power (external DC source 7 to 34V). Supplying power with the other pins will break the analyzer.

Do not allocate power supply of more than 6V to its 9/10/11/15/13/18/19 pin on the Dsub 25pin connector. It may cause the product malfunction.

■ RS-485 Connection Image
Terminal Block Adapter (LE-5TB)

Connection of Terminal Block Adapter

Supprts TTL level communication with an option.

With an optional TTL probe pod (OP-5M), it can monitor TTL-level communication at 2.5V/ 3.3V/ 5V. It is useful such as when measuring TTL signals on an UART port or USART port of PCB and communication units.
About OP-5M

< Image of Use >

Measurement linked with an external device is available

You can use the external trigger input/output terminal to trigger by a change in an external signal or to transmit a specific communication status to an external measuring instrument as a trigger.

Signal Function
TRGIN External trigger input
TRGOUT External trigger output 1
TRGOT2 External trigger output 2
GND Signal ground

Supports Multi Protocols

Supports not only Async/PPP communications but also Character Sync (SYNC, BSC) and Bit Sync (HDLC, SDLC). It is possible to select bit transmission order, polarity, and data format (NRX/NRX) and able to analyze efficiently.

[ ASYNC monitor display ]

[ PPP translation ]

[ SDLC/SDLCE/X.25/X.25E frame translation ]

[ LAPD frame translation ]

[ X.25 packet translation ]

[ LAPD packet translation ]

■Communication Errors can be detected with High Reliability

It can judge parity error, framing error, BCC error of various block check codes, and short SDLC/HDLC frame. It can find the communication sequence in the event of an error, by setting an application-level error notification character string to the character string agreement criteria of the triggering function. It can notify an error to external devices and alert a communication error in the logger mode (with a panel LED lighting), by specifying an external trigger signal output and user-defined LED lighting as a triggering action.

[ Trigger setting ]


Up to 4 trigger points can be set, and each trigger condition and trigger operation can be set individually.
Triggers with a check mark will be enabled at the start of measurement.

■ Long Hour Recording

Measured data is saved as log files of the specified file size in the HDD of the PC (Remote mode) or in the SD card of the analyzer (Logger mode). It automatically records data until reaching the specified number of files, and then deletes the oldest file to record the new file. Also, it can stop measurement on reaching the specified number of files. It is useful for detecting any hindrance in the line.

Baud Rate Capacity: 2G byte
(e.g. 2M byte×100 files)
9600bps Approx. 120 Hours
230.4Kbps Approx. 5 Hours
*: In the case of full-duplex transmission of 1Kbyte data at 1ms interval.

[ Logger mode log setting screen ]

■ Measures at Arbitrary Speed

Monitor data at any speed by setting the baud rate of any four digits. The high-precision timer makes it possible to record idle time and time stamps along with data, and is not related to the performance of the PC.

< Configuration Setting >

■Waveform monitor function

It can measure the timing of changes in communication lines with a time resolution of up to 50ns and display the waveforms like a logic analyzer.

[ Waveform monitor setting screen ]

[ Waveform monitor display screen ]>

■Easy-to-use simulation function included as standard

While checking the received data, you can send 16 types of pre-registered sending data or fixed data such as FOX messages with one click, so it can be widely used for checking communication procedure steps and continuous communication tests.

[ Simulation data table registration ]

[ Send data selection screen ]

■ Schedule Measurement by Inner RTC

Real Time Clock (RTC) backed up by the battery of the analyzer makes it possible to specify the starting and ending times of the measurement. After the measurement, it turns off the power automatically and saves on power consumption.

[ Schedule measurement settings ]

■ Seamless Access to Communication Log Files

Communication log files can be viewed in detail on a PC. It offers seamless operation that handles a single measurement log file even when all files are read collectively. The measured data can be converted into text or CSV format to use in a word processor and/or spreadsheet software.

[ Text conversion ]

[ Example of text converted format ]


Can be used in Various Situation

■ Acquired Patent in Japan

A newly developed Instant Power Failure Prevention circuit with a Super Capacitor protects important communication log files stored in the SD cards. It protects data in case it occurs the power failure during recording to the SD card. Also, you can select the restart method of measurement from "Instant Start" or "After Charging Super Capacitor". Thus, continuous recording is possible while considering the status of data generation and power system.

■ Small and Robust Housing Suitable for Severe Field Environments

The palm-sized robust unit can be used between -10 to +55°C. It operates not only on USB bus power, but also on external DC power of 7 to 34V. The consumption current is as low as 100mA at DC12V input. The SD card slot and the USB connector are equipped with a dust-proof cover that allows 2-way operation. It can be fixed easily to the equipment to be examined or built into an inspection line, since it is compatible with 35mm DIN rails.

< Dust-proof covers >

< DIN Rail Installation Example >

■Automatically Switches between Japanese and English

The system language alternates automatically between English and Japanese according to that of OS. This facilitates introduction of the software to development bases outside Japan.