Model JI-210
I2C Bus Monitor                

The JI-210 is a PC hosted I2C bus monitor used to non-invasively
monitor and analyze a variety of I2C networks. The desktop unit
captures and stores up to 32KBs of bus activity including data and
address values, stop/start, read/write, ACK/NACK, and frame error
events. Data is displayed as both I2C messages and Timing
Waveforms. A Windows software application manages captured
I2C messages, trigger setup, and recording settings. RS-232**
provides the PC to desktop unit communications link.
A unique FPGA architecture allows the JI-210 to capture and display all I2C bus events
a Master mistakenly ignoring the NACK response of a Slave by continuing to transmit
data bytes will be captured, showing the invalid NACK response for each transfer. Bus
anomalies such as a Start followed by a Stop without data, or multiple Stop/Starts
conditions will be captured and displayed as they occurred.  Additionally, the JI-210 can
A unique FPGA architecture allows the JI-210 to capture and display all I2C bus events
be configured to trigger and capture bus errors such as truncated address or data be
configured to trigger and capture bus errors such as truncated address or data values or
missing ACK/NACK responses.
Features
Compatible with Standard (100kbit/s), Fast(400kbit/s), and bit rates up to
700kbit/s
without clock stretching.
Waveform sampling rates up to 50ns (20MHz)
Supports 7-bit and 10-bit addressing
Compliant with 3.3V and 5.0V bus networks
Combinational Event Triggering -- based on Address, Data, and R/W values,
and Frame Error events.
Selectable pre/post trigger position for both message capture and Timing
Wavefom data
Message period timestamp with 1us resolution
Trigger output signal available via BNC connector -- used to trigger external
test equipment  
Easy to use Graphical User Interface (GUI) software included  
Applications
Firmware debugging and hardware troubleshooting.
Production line testing.
Equipment repair and diagnostics.
Software Main Window
(Click window for a larger view)
Documents and Downloads
Bus Monitor
Cable
Front View
Rear View
Specification
Sheet (pdf 143K)
User Manual
(pdf 454K)
Software Demo
(zip 87K)
(1/29/06)
menu for instructions on running
Go to "Quick Start" at the Help
demo.
(1/29/06)
(7/31/06)
Questions or comments?  Please email or call:
sales@jupiteri.com
Jupiter Instruments                                                                                                                                                               www.jupiteri.com
* Note: If the host PC does not have an available COM port, but does have a free USB port, a USB to RS-232 converter can
be used. Successful operation has been achieved with the
IOGear Model GUC232A USB to Serial/PDA converter cable.    
Updated on 2/2/11
Model JI-210
or  Ph: 949-716-0154
I2C Development Tools
**See Model JI-216 for USB version
Jupiter Instruments
Unique instrumentation products