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A CUMEN I NSTRUMENTS C ORPORATION DataBridge™ SDR2-USB Configuration Guide revision 1.0 • 04/2009.
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Copyright This document is copyrighted by Acumen Inst ruments Corporation with all rights reserved. No part of this document may be reproduced in any form without prior written consent of Acumen Instruments Corporation. Copyright © 2009 by Acumen Instruments Corporation.
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SDR2-USB Configuration Guide rev 1.0 Getting Started Table of Contents 1. Getting St arted ..................................................................... 5 1.1 Overview ...................................................................
Getting Started SDR2-USB Configuration Guide rev 1.0 6. Service and Suppor t ........................................................... 27 6.1 Exception Codes .................................................................................. 27 Exception 2: Root Directory Full .
SDR2-USB Configuration Guide rev 1.0 Getting Started 5 NOTE: The data source is a device that transmits serial data for use by a computer, printer, or data logger.
Getting Started SDR2-USB Configuration Guide rev 1.0 6 1.2 Before you start Before you start, be sure you hav e the following items available: • DataBridge SDR2-USB • A 5-30VDC power supply • RS-232 DB9 serial cable • The device you wish to record from (serial data source) 1.
SDR2-USB Configuration Guide rev 1.0 Getting Started 7 NOTE: Your computer’s Windows installation may display different drive letters, file types, etc. due to differences in Windows versions, configurations, and software installations. On the rear is the male nine-pin D-subminiature connector (DB9M) for the data port.
Getting Started SDR2-USB Configuration Guide rev 1.0 8 Figure 1.3. Creating setup.txt. Once the file is created, double-click it to open the file in Windows Notepad and enter “DataPortBaud=9600” as shown in Figure 1.4. This tells the SDR2-USB to communicate with your data source at 9600 baud.
SDR2-USB Configuration Guide rev 1.0 Configuring the DataBridge SDR2-USB 9 2 2 2. Configuring the Dat aBridge SDR2-USB Now that you’ve successfully edited th e SDR2-USB’s setup.txt file, you are ready to configure it for use with your serial data source.
Configuring the DataBridge SDR2-USB SDR2-USB Configuration Guide rev 1.0 10 2.1 Comments Within the setup.txt file, it is useful to record comments documenting the settings chosen and why some configur ation choices were made. Comments are also useful for temporarily disablin g setting(s) for the purposes of testing multiple settings.
SDR2-USB Configuration Guide rev 1.0 Configuring the DataBridge SDR2-USB 11 NOTE: By default, the SDR2-USB uses a serial data format of eight data bits, no parity, and one stop bit (8N1). Most serial devices use this format. Figure 2.2. Setting date and time.
Configuring the DataBridge SDR2-USB SDR2-USB Configuration Guide rev 1.0 12 Hardware handshaking prevents a data source from sending data when the SDR2-USB is not ready to receive it – the SDR2-USB can “shut off” the transmitting data source if, for exampl e, the USB storage media is slow or not present.
SDR2-USB Configuration Guide rev 1.0 Configuring the DataBridge SDR2-USB 13 Figure 2.3. Specifying filename and folder for recording. 2.5 Configuring file creation behavior Be default, the SDR2-USB creates a new file in the recording folder every time recording is initiated, generating a new, unique filename based on the previous filename.
Configuring the DataBridge SDR2-USB SDR2-USB Configuration Guide rev 1.0 14 feed is received by adding the line TimestampTrigger=10. The recorder will be “armed” to time stamp when a line feed is received, then insert a stamp when the next character is received— at the start of the next line.
SDR2-USB Configuration Guide rev 1.0 Operations 15 3 3 3. Operations 3.1 Setup file reading The setup.txt file on the USB storage device is read only when power is applied to the SDR2-USB. Once read, all settings found in setup.txt are retained by the recorder.
Operations SDR2-USB Configuration Guide rev 1.0 16 3.2.2 Stopping recording Incoming data is written to the open file as it is received until you stop recording by pressing the record butto n. The SDR2-USB then closes the file, updates its directory entry (recor ding file size, date, and time), and returns to stop mode.
SDR2-USB Configuration Guide rev 1.0 Operations 17 NOTE: If your USB storage media was included with SDR2-USB, it is already formatted properly. Delete files on the target media using your computer or replace the media, then insert and press the record button to record data normally.
Operations SDR2-USB Configuration Guide rev 1.0 18 3.3 Lithium battery maintenance The SDR2-USB's real-time clock uses a small lithium battery to maintain time when external power is unavailabl e.
SDR2-USB Configuration Guide rev 1.0 Setup File Reference 19 4 4 4. Setup File Reference All SDR2-USB configuration is performed via the setup.txt file in the root folder of the USB storage device.
Setup File Reference SDR2-USB Configuration Guide rev 1.0 20 4.1.2 Data Port Setup Commands DataPortBaud (default=9600): Use this setup file command to specify a bits/second rate for communication with your data source. Industry- standard baud rates are 300, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, and 230400 bps.
SDR2-USB Configuration Guide rev 1.0 Setup File Reference 21 possible when space available on the st orage media is exhausted. Together with scheduled file closing, this option can be used to configure the SDR2-USB as a circular buffer— as the disk fills, the oldest file is overwritten.
Setup File Reference SDR2-USB Configuration Guide rev 1.0 22 TimestampTrigger: The TimestampTrigger setup file line specifies a decimal ASCII character that “arms” the time stamping function. Once the trigger character is received, the recorder will insert a time stamp when the next byte of data is received.
SDR2-USB Configuration Guide rev 1.0 J4 Remote Control Port 23 5 5 5. J4 Remote Control Port 5.1 Overview The SDR2-USB’s J4 remote connector allows for starting and stopping recording via external switches/buttons or TTL/CMOS digital logic. The J4 connector also provides alternate outputs for the front-panel fault, data, and record indicators.
Setup File Reference SDR2-USB Configuration Guide rev 1.0 24 5.3 Functions Table 5.1 describes the functions of the J4 remote connector. V DD (3.3VDC) Regulated low-current voltage output. Use for deasserting active-low inputs and driving LED indicator outputs.
SDR2-USB Configuration Guide rev 1.0 J4 Remote Control Port 25 Contact Function Direction Wire Color 1 V DD (3.3 VDC) - 2 GND (0 VDC) Black 3 input Blue 4 input Grey 5 output Yellow 6 no connect - 7 output Orange 8 output Green 9 V DD (3.3 VDC) - 10 GND (0 VDC) - Table 5.
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SDR2-USB Configuration Guide rev 1.0 Service and Support 27 6 6 6. Service and Support 6.1 Exception Codes The following are common error codes encountered when using DataBridge SDR2-USB products. To determine which error has occurred, watch the "exception" indicator on the SDR2-USB's front panel and count the number of rapid blinks.
Service and Support SDR2-USB Configuration Guide rev 1.0 28 Exception 4: Bad Boot Reco rd Occurs when the disk is completely unformatted or formatted for an unsupported file system. Use format /FS:FAT from the Windows command prompt to ensure proper FAT formatting.
SDR2-USB Configuration Guide rev 1.0 Service and Support 29 6.2 Contacting Acumen Instruments Corporation 6.2.1 Technical support Service and technical support can be reached between the hours of 9 AM and 5 PM (Central Standard Time) Monday through Friday.
Service and Support SDR2-USB Configuration Guide rev 1.0 30 6.4 Warranty 6.4.1 One year warranty Acumen Instruments Corporation warrants this product to be free from defects in materials and workmanship for a period of one (1) year from the date of shipment.
SDR2-USB Configuration Guide rev 1.0 Serial Port Basics 31 A A A. Serial Port Basics A.1 Serial specifications Serial data is any data that is sent one bit at a time using a single electrical signal. In contrast, parallel data is sent 8, 16, 32, or even 64 bits at a time using a signal line for each bit.
Serial Port Basics SDR2-USB Configuration Guide rev 1.0 32 The EIA RS-232C standard permits data rates up to 19200 bps and cable lengths up to 400 meters (but not both). data rate maximum distance (bps) (meters) (feet) 19200 15 45 9600 25 76 4800 50 152 2400 100 304 1200 200 608 600 400 1216 Table A.
SDR2-USB Configuration Guide rev 1.0 Serial Port Basics 33 NOTE: Most serial devices format of eight data bits, no parity, and one stop bit (8N1). To transfer data asynchronously, the UART frames the 8 data bits between a stop bit and a start bit. The start bit is always a zero, while the stop bit is always a one.
Serial Port Basics SDR2-USB Configuration Guide rev 1.0 34 modem cable because it can connect two terminals (DTE’s) without the use of modems (DCE’s).
SDR2-USB Configuration Guide rev 1.0 Serial Port Basics 35 CTS, etc.), RS-232 devices use +3V to +25V to assert the signal and –3V to –25V to deassert the signal. These voltage levels are defined in the EIA/TIA- 232E specification. So, when a DTE devices drives RTS at –9.
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Specifications SDR2-USB Configuration Guide rev 1.0 37 NOTE: The SDR2-USB datasheet contains further specifications. All specifications shown in this section may be superseded by the datasheet. B B B. S pecifications B.1 Electrical specifications SDR2-USB requires a 5 to 30 VDC power source power source via connectors J7 and J1 on SDR2-USB.
Specifications SDR2-USB Configuration Guide rev 1.0 38 B.1.6 J1 power receptacle pin configuration pin Function 1 +5.0 to +30 VDC 2 Ground Table B.3. The SDR2-USB internal power receptacle pin configuration. B.2 Serial communications Serial Port electrical interface compliance EIA/TIA-232E and V.
Specifications SDR2-USB Configuration Guide rev 1.0 39 Notes:.
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