Protocol Decoders Included
  • Modbus RTU, Modbus ASCII, PPP, SLIP, Saia-Burgess S-Bus, and TCP/IP carried over PPP and/or SLIP.


  • Easy-to-use scripting language to write custom decodes for proprietary protocols and/or extensions to existing protocol decoders.

Data Capture Options

  • Requires 'RS-232 ComProbe II' or 'RS-422/485 ComProbe'.
  • Supports data rates up to 921.6 Kbps including non-standard baud rates.
  • Capture data to a single file or a series of files.
Display Windows
  • Data can be analyzed in real-time using the Event Display Display Event, Frame Display Frame Display, Signal Display Signal Display, Breakout Box Display Event and Statistics Window Statistics.
  • Multiple synchronized windows can be viewed simultaneously.
  • Real-time breakout box includes timing diagrams and counters for control signals.
  • Timing diagrams enable captured control signal transitions to be viewed with respect to captured data bytes.

Data Display Characteristics

  • Frame/Packet contents are decoded to the byte and bit level.
  • Characters can be displayed in ASCII, EBCDIC, or Baudot.
  • Nonprintable characters are displayed using hex and mnemonics.
  • Supported radices include hex, octal, decimal and binary.
  • Decoded data formats supported include 16 bit Integers, 32 bit Integers, IEEE 32 bit Floating Point, 32 bit Reverse Floating Point, and ASCII.

Display Filters

  • Display filter parameters include filter-in or filter-out protocols, messages, data patterns, and advanced mode for complex filters.
  • Quick filters for the Frame Display window includes protocol filtering in and out, filtering on the summary pane, and filtering on messages.
  • Tab filters in the Frame Display allow you to filter in frames that contain a specific protocol layer.


  • Search at the byte or frame level.
  • Find data by timestamps.
  • Locate errors.
  • Discover specific data patterns (patterns include wildcard characters at the bit level, nibble level, and byte level).
  • Search decoded text, with or without wildcards.

Data Export

  • Export Events or Frames into text or binary format.
  • Exports the contents of the Frame Display's Summary Pane into CSV format.
  • Export output is suitable for importing into a spreadsheet, database or other post-process program for intricate data and protocol analysis.
  • Print the Summary Pane and/or Decode Pane information.

Network Statistics

  • Shows amount of data on the network (number of characters/bytes/events/frames/messages).
  • Displays error information.
  • Provides information on data rates (characters per second, frames per second).
  • Provides network utilization information.
  • For serial networks, it provides statistics for both the DTE/Master/Host and DCE/Slave/RTU ends.
  • Provides current, peak and average values for all network statistics metrics.

Data Transmission

  • Includes special Transmit program to send data over Serial ports.
  • Transmit is supported only for PCs with built-in serial port that use Microsoft's serial driver (SERIAL.SYS or SERIAL.VXD).
  • Data strings and files can be transmitted one time, multiple times, or continuously.
  • Data transmission delays can be inserted in millisecond, second, or minute increments.
  • Control signals can be set on or off.


  • Provides both absolute and relative displays of event timing for bytes and frames/messages.
  • Calculates time intervals between bytes and between frames/messages (delta time).
  • Timestamp resolution is 100 nanoseconds.

Collaboration Features

  • Add notes to your capture files describing the contents of the data. Use the notes for archiving network information, or to resolve problems and sharing information between people.
  • Add bookmarks to highlight important bytes and frames for easy access. Use these bookmarks to share information and capture files between team members.
  • I/O configurations, protocol stacks, and filters can be saved for future use.

Help & Documentation

  • Comprehensive product help provides operating instructions.
  • Quick Start Guide enables rapid product set-up and operation.
  • Documentation is installed with the product and is also available online.