DCI Technologies Inc. Micro-CAPP Serial Interface

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Now two versions available

Micro-CAPP FDX FEATURES

	Highly Accurate Radio Control System
	Baud Rate Translation
	Enables "Data Only" serial devices to use a radio
	Handles Binary Data (Protocol Independent)
	Optional Store and Forward Repeater (Parrot)
	Standard 9 pin Data Connections

Micro-CAPP RTS FEATURES

	Highly Accurate Radio Control System
	Easily Add RTS/CTS control
	Enables "Data Only" serial devices to use a radio
	Handles Binary Data (Protocol Independent)
	Low Cost
	Standard 9 pin Data Connections

FDX HARDWARE

	Dual RISC processors
	Dual High Speed FIFO Buffers

	Rugged Aluminium Enclosure
	12 to 24 Vdc Operation
	Full Duplex Operation

RTS HARDWARE

	RISC processor
	High Speed FIFO Buffer

	Compact Inline Enclosure
	12 to 24 Vdc Operation
	Half Duplex Operation

FDX SOFTWARE

	Easy to use WindowsÒ set-up program
	No need to open enclosure
	Uses Standard Laptop Com Port
	On-Line Help
	Interactive Timing Diagrams "Show" your settings
	Fast Configuration Download (no dip switches)
	Free Updates available via the Internet

RTS Set-up

	Quick and Easy DIP Switch Settings
	No need to open enclosure
	Set Baud Rate
	Set 8 or 9 bit data
	Enable or Disable CD Monitoring
	Full RTS/CTS Support.
	Great for Dataradio T-96SR Wireless Modems

Download Software and QuickStart Guide Here!

TYPICAL APPLICATIONS

	Rate Translation, match a legacy RTU with your faster Radio Network.
	Use to *Pace Data* into a slower peripheral that doesn’t support handshaking.
	Use as a *Digital Delay* for your lab performance testing.
	Terminal Server to *Radio Interface*,
	Anywhere you need to control or Match Two Serial Data Streams.
	Turn a standard transparent radio into a *Store and Forward Repeater.*

SPECIFICATIONS* Download PDF Brochure   (Requires Adobe 4)

Micro-CAPP FDX
Host Port

Radio Port

Baud Rate 1200, 2400, 4800, 9600, 19,200 1200, 2400, 4800, 9600, 19,200

Data Format 8 bit 8 bit

Character Pacing 0 to 65 ms in 0.001 ms increments 0 to 65 ms in 0.001 ms increments

Rate Padding 0 to 65 seconds in 1 ms increments 0 to 65 seconds in 1 ms increments

Pre-Transmit N/A 0 to 65 seconds in 1 ms increments

Post-Transmit N/A 0 to 65 seconds in 1 ms increments

CTS Control Ignore, Force On, Drop when Buffer ½ full Ignore or Wait for CTS

Port Connector High Density DE-15 High Density DE-15

I/O Compatibility EIA RS-232 EIA RS-232

* Specifications subject to change without notice

The Micro-CAPP™ is ideally suited to add radio control (RTS/CTS) to a serial data stream and is designed to carry binary protocols over DATARADIO transparent wireless modem systems. It is direct pin compatible with the DATARADIO T96SR radio but can be easily adapted to work with any serial radio modem. The device controls the radio so that the host system doesn't have to provide PTT or handle RTS, CTS.   Maximum full duplex data rate is 19.2 kbps. Very flexible radio control system.

Custom features are available upon request.

Real-Life Example of Micro-CAPP™ Polling Improvement

This graphic displays a 24 hour polling period for a single site. The polling of the site was increased by 230% and the success rate was increased to 400%. The data used for the graph was obtained from the screen shot shown below. The success rate performance increase was calculated from the failed scan counts.

The image above is a communications statistics screen shot from a SCADA host system. It displays the RTU Communications performance for a site over a 24 hour period. The Micro-CAPP™ was installed at 16:00 hrs. Look closely at the statistics and you will see that the RTU was replying approx 743 times per hour and running at an average 97% success vs fail prior to the install. After the installation the RTU was replying at over 1700 times per hour with many hours at 100%.

What was really happening? Why so many more polls with Micro-CAPP™

The system utilized two Unix hosts with dual terminal servers connected to a DATARADIO T96S radio system. The baud rate was not changed, the increase in performance was due to offloading RTS/CTS control from the terminal server and having the Micro-CAPP™ ACCURATELY look after the radio control.

Here is a scope trace showing an example of how the hosts' terminal server was controlling RTS. Channel 1 is host RTS and channel 2 is the host TX Data. You can see where RTS was dropped 16.3 ms before the end of the message. Other times the terminal server would hold RTS on too long resulting in chopping off the start of the RTU reply. This was an intermittent condition and varied with how busy the terminal server was.

This trace is an overview of host polling. Channel 1 is the host poll, Channel 2 is the RTU reply. The scale is 1 second per division. You can see that the host didn't like the reply from poll 3. The Protocol Analyzer showed that reply 3 was missing a couple of characters at the start of the message because the terminal server held RTS high too long. This resulted in the host going into recovery mode and didn't start to re-poll until 3.28 seconds later.

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Read Legal Info Here "DCI Technologies", "Micro-CAPP" and "COR-Logic" are Trademarks of DCI Technologies Inc. All other trademarks are property of their respective owners. Last modified July 29, 2008 (nfdotca)

What was really happening? Why so many more polls with Micro-CAPP™

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