Model 232SDA12 Document 232SDA124597 This product Desig

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RS-232 Data Acquisition Module
Model 232SDA12
Document 232SDA124597
This product
Designed Manufactured Ottawa, Illinois
domestic imported parts
Electronics Mfg. Inc.
Dayton P.O. 1040 Ottawa, 61350 (815) 433-5100 (815) 434-7094
Internet: http://www.bb-elec.com sales@bb-elec.com techsupt@bb.elec.com
1995 Electronics Revised November 1997
232SDA124597 Manual
Cover Page
Electronics Dayton 1040 Ottawa, 61350 (815) 433-5100 (815) 434-7094
Table Contents
Chapter Introduction
232SDA12 Features Packing List Software Installation
DOS. Windows 3.11 Windows Windows
Uninstall.3
Windows 3.11 Windows Windows
Getting Started 232SDA12 Specifications
Chapter Connections
Connections.6
Inputs Input Input Analog Ground Typical Connections
Digital Connections
Digital Inputs Digital Outputs Digital Ground Typical Connections
Serial Port Connections.10 Power Supply Connections
Chapter Commands
Syntax Reading Channels Command.14 Reading Digital Command Digital Output Command
Chapter A/D.
Sampling Rate Input Range Reference Inputs Data Range Converting Data.18
232SDA124597 Manual Table Contents
Electronics Dayton 1040 Ottawa, 61350 (815) 433-5100 (815) 434-7094
Chapter Software.
Read Command Read Digital Command.21 Digital Output States
Appendix Adding Data Field Confirmation Appendix Analog Input Impedance Appendix Decimal ASCII Table Figures
FIGURE 232SDA12 UNIT. FIGURE GENERAL BLOCK DIAGRAM FIGURE WITH VARIABLE RESISTOR. FIGURE TYPICAL CONNECTION FIGURE TYPICAL DIGITAL CONNECTIONS FIGURE CONVERTER DATA RANGE. FIGURE EQUIVALENT INPUT CIRCUIT INCLUDING DRIVING SOURCE.
Tables
TABLE 232SDA12 PORT PINOUT TABLE RS-232 CONNECTOR PINOUT TABLE 232SDA12 CONNECTIONS. TABLE 232SDA12 CONNECTIONS TABLE 232SDA12 COMMANDS TABLE EQUIVALENT VALUES. TABLE READ RESPONSE. TABLE READ DIGITAL RESPONSE OUTPUTS TABLE READ DIGITAL RESPONSE INPUTS TABLE DIGITAL OUTPUT DATA BYTE VALUES TABLE DIGITAL MASK VALUES TABLE EXTENDED COMMANDS TABLE DECIMAL ASCII TABLE.
Table Contents
232SDA124597 Manual
Electronics Dayton 1040 Ottawa, 61350 (815) 433-5100 (815) 434-7094
Chapter Introduction
232SDA12 Features
232SDA12 general purpose control module that connected your computer's RS-232 serial port. 232SDA12 offers channels 12-bit (analog digital), digital inputs digital outputs. With these features, module used sense variety external conditions control variety devices. channels allow measure voltages from Volts. digital inputs digital outputs CMOS/TTL compatible. digital lines available through DB-25S (female) connector. 232SDA12 connects your computer's RS-232 serial port through DB-25S connector. unit automatically detects baud rates from data format data bits, stop parity used. unit powered setting and/or high serial port. 232SDA12 cannot powered using handshake lines, powered using 2.5mm jack. 232SDA12 requires (not including power consumption external devices). NOTE: When using external supply, connect supply only specifically labeled power inputs (power jack, terminal block, etc.). Connecting external power supply handshake lines damage unit. Contact technical support more information connecting external power supply handshake lines.
Figure 232SDA12 Unit
232SDA124597 Manual
Electronics Dayton 1040 Ottawa, 61350 (815) 433-5100 (815) 434-7094
Figure General Block Diagram
Packing List
Examine shipping carton contents physical damage. following items should shipping carton: 232SDA12 unit 232SDA12 3.5" disk This instruction manual these items damaged missing contact Electronics immediately.
Software Installation
232SDA12 comes with several useful programs such data logging utility, demonstration program, etc. installation Logger different depending platform install Please appropriate your system. Place disk drive Type press <ENTER> key. Type INSTALL press <ENTER> key. Follow instructions given program. Windows 3.11 Insert Logger installation disk your floppy drive. 232SDA124597 Manual
Electronics Dayton 1040 Ottawa, 61350 (815) 433-5100 (815) 434-7094
Click File Manager button. Select floppy drive containing Logger installation disk. Double click Setup.exe icon when appears. Follow installation instructions prompted. Windows Windows Insert Logger installation disk your floppy drive. Click Start Run. Click Browse button choose floppy drive containing Logger installation disk. Double click Setup.exe icon when appears. Click button Setup.exe program. Follow installation instructions prompted.
Uninstall
Uninstall Logger version different each Windows operating system. Below methods uninstalling Logger. Windows 3.11 Open File Manager Control Panel. Click drive that Logger installed Click SDA16 directory. Double click UNWISE.EXE. Follow Uninstall Wizard. Windows Windows Open Start Settings Control Panel. Open ADD/REMOVE PROGRAMS. Click LOGGER. Click Add/Remove button. Follow Uninstall Wizard.
Getting Started
This section will provide quick example using 232SDA12 demonstration program. experience problems, refer Chapter more precise information connections. demo program continually reads inputs digital I/O. states digital outputs toggled using serial port configured baud, data bits, parity, stop bit. program supports standard addresses IRQ's COM1 COM2. Connect analog device input connect variable resistor shown Figure 1.3.
232SDA124597 Manual
Electronics Dayton 1040 Ottawa, 61350 (815) 433-5100 (815) 434-7094
variable resistor must greater than Ohms limit output current 5mA. Connect Input+ Connect Input- analog ground (See Figure 1.3). Connect 232SDA12 standard serial port using straight through cable standard DB-9 DB-25 adapter cable. Once your connections have been made, demo program. demo program automatically raises power unit. change digital lines 232SDA12 will automatically displayed screen.
Figure with Variable Resistor
232SDA124597 Manual
Electronics Dayton 1040 Ottawa, 61350 (815) 433-5100 (815) 434-7094
232SDA12 Specifications
Analog Digital Converter Resolution: Channels: Reference Range: max. (1.211 bit) 2.5V min. bit) Ref. Input 2.5V Ref. Input 2.5V Input Voltage Range: 5.3V Total Unadjusted Error: max. input channels must driven from source impedance less than Volt Reference Output Voltage: 4.975 typ.) Accuracy: Output Current: max. Digital Inputs Channels: Voltage Range: Voltage: High Voltage: Leakage Current: microamp max. Digital Outputs Channels: Voltage: 8.7mA High Voltage: 4.3V -5.4mA Power Supply Input Voltage: (Doesn't include power consumption external devices.) NOTE: and/or high, RS-232 port powers unit. Communications Standard: RS-232 (unit DCE) Baud Rate: (automatic detection) Format: data bits, stop bit, parity Connector: DB-25S (female)
232SDA124597 Manual
Electronics Dayton 1040 Ottawa, 61350 (815) 433-5100 (815) 434-7094
Chapter Connections
This chapter will cover connections required 232SDA12. There four sets connections: converter Digital Serial port Power supply make connections 232SDA12 until have read this chapter. Caution: When making electrical connections important power down devices being connected. this possible, precautions must taken ensure electrical specifications exceeded. Note: intend section (A/D I/O), still important read each one.
Connections
connections made port, which DB25S (female) connector. Table shows pinout port. next sections explain functions connections various analog signals. Inputs These analog input channels. analog data that read from 232SDA12 related voltage these pins. Connect your devices analog input channels. input channels must driven from source impedance less than Connect unused inputs analog ground. Input voltage connected this determines upper input voltage range. proper operation, this must connected voltage between +2.5 Volts. 232SDA12 provides reference reference used require input range. your application requires better reference voltage different input range, must supply appropriate reference Input+ pin. This voltage must least 2.5V greater than Input-. Bypassing Input+ with ceramic tantalum capacitors analog ground will decrease noise levels. 232SDA124597 Manual
Electronics Dayton 1040 Ottawa, 61350 (815) 433-5100 (815) 434-7094
Input voltage connected this determines input voltage range. proper operation, this must connected voltage between +2.5 Volts. Typically, this connected your device's ground analog ground Analog Ground This should connected your analog device's ground. ground your input voltage range, Input- should connected this pin. minimize noise connect analog ground digital ground together. Connect unused inputs analog ground. Typical Connections Figure shows typical connections 232SDA12 input range.
Figure Typical Connection
232SDA124597 Manual
Electronics Dayton 1040 Ottawa, 61350 (815) 433-5100 (815) 434-7094
Digital Connections
digital connections made port, which DB-25S (female) connector. Table shows pinout port. next sections explain functions connections various digital signals. Table 232SDA12 Port Pinout DB-25S Function Function
DB-25S
Digital Output +12V Output* Digital Output Digital Input Digital Output Digital Input Output Digital Input Ref. Input Digital Ref. Input Analog connection Input Input Input Input Input Input Input Input Input Input Input *Actual output equal power supply input minus Digital Inputs digital input lines CMOS/TTL compatible handle voltages from digital input from state will read (LOW). digital input from state will read (HIGH). Connect unused digital inputs digital ground. Digital Outputs digital output lines CMOS/TTL compatible. digital output that (LOW) will output voltage from digital output that (HIGH) will output voltage from 4.3V Refer Chapter Specifications, more information. Unused digital output lines left open. 232SDA124597 Manual
Electronics Dayton 1040 Ottawa, 61350 (815) 433-5100 (815) 434-7094
Digital Ground Connect digital ground your digital device's ground. minimize noise connect analog ground digital ground together. Connect unused digital inputs digital ground. Typical Connections Figure shows typical connections 232SDA12 digital lines.
Figure Typical Digital Connections
232SDA124597 Manual
Electronics Dayton 1040 Ottawa, 61350 (815) 433-5100 (815) 434-7094
Serial Port Connections
communicate 232SDA12 module, must connected RS-232 serial port. unit automatically detects baud rates from data format data bits, stop parity used. 232SDA12 configured device (See Table 2.2). your communications equipment configured device, such standard serial port, connect 232SDA12 using "straight through" DB-25 cable standard DB-9 DB-25 cable adapter shown Table 2.3. your communications equipment configured device, such modem, connect 232SDA12 using "null modem" cable (See Table 2.4). Table RS-232 Connector Pinout 232SDA12 Signal Function Notes Transmit Data (TD) Receive Data (RD) Request Send (RTS) Clear Send (CTS) Data Ready (DSR) Signal Ground (SG) Data Carrier Detect (DCD) Data Terminal Ready (DTR) Input Output Input Connection required. Connection required. used power unit kept high. Internally connected (pin Internally connected (pin Connection required. Internally connected (pin used power unit kept high.
DB-25S
Input
232SDA124597 Manual
Electronics Dayton 1040 Ottawa, 61350 (815) 433-5100 (815) 434-7094
232SDA12
Table 232SDA12 Connections DB-25 DB-9 Signal Connection Connection Transmit Data (TD) Receive Data (RD) Request Send (RTS) Clear Send (CTS) Data Ready (DSR) Signal Ground (SG) Data Carrier Detect (DCD) Data Terminal Ready (DTR)
Table 232SDA12 Connections 232SDA12 DB-25 DB-9 Signal Connection Connection Transmit Data (TD) Receive Data (RD) Request Send (RTS) Clear Send (CTS) Data Ready (DSR) Signal Ground (SG) Data Carrier Detect (DCD) Data Terminal Ready (DTR)
Power Supply Connections
232SDA12 requires 5mA. Power supplied either through serial port's handshake lines (RTS, DTR) through 2.5mm power jack. Most serial ports provide enough power supply 232SDA12's requirement. this method power unit, your software must high. Remember that requirement doesn't include power consumption external devices. Therefore, current sourced with digital outputs must added this value.
232SDA124597 Manual
Electronics Dayton 1040 Ottawa, 61350 (815) 433-5100 (815) 434-7094
Chapter Commands
There only three commands required control 232SDA12: Read command Read digital command output states command command string consists four bytes. read digital commands require additional data byte. information adding checks data fields refer Appendix Table 3.1. Table 232SDA12 Commands Command Response
Function
Read {ch#msb}{ch#lsb}{ch(#-1)msb}. Channels Read Digital {I/O states} Output States response NOTE: Each represents byte. Before going into specifics each command, important understand that byte value from represented decimal 255), hexadecimal FF), ASCII character. commands Table shown ASCII, example: ASCII Decimal (33)(48)(82)(68)
decimal hexadecimal equivalents some ASCII characters shown Table 3.2. Notice that ASCII representation character does have value Refer Appendix more ASCII, decimal, hexadecimal equivalents.
232SDA124597 Manual
Electronics Dayton 1040 Ottawa, 61350 (815) 433-5100 (815) 434-7094
Table Equivalent Values ASCII Decimal Hexadecimal
Syntax
command string consists four bytes. first byte start message byte. start message byte always character. second byte address byte. This byte allows each unit have unique address (useful RS-485 networks). Since 232SDA12 uses RS-232 communications, this byte ASCII (zero) character changed. next bytes command characters. These bytes used specify which command module will execute. read digital commands require additional data byte. Command Syntax: Data Byte Command Byte Command Byte Address Byte Start Message Byte
232SDA124597 Manual
Electronics Dayton 1040 Ottawa, 61350 (815) 433-5100 (815) 434-7094
Reading Channels Command
Read channels command returns bytes each channel read. bytes represent most significant byte (MSB) least significant byte (LSB) reading. received first, followed LSB. This command requires data byte. data byte used specify number highest channel read. channels less than this channel will read well. example, data byte value then channels will read. highest channel read first. Command Syntax Where "{#}" byte that specifies number highest channel read. Table Response Syntax most significant byte channel specified received first. least significant byte lower channels will follow descending order. "{chxMSB}" "{chxLSB}" represent most least significant bytes conversion result. Table Read Response Channels Specified decimal ASCII Response Channels Returned Bytes (order response) Returned Channel Channels Channels Channels Channels Channels Channels Channels Channels Channels Channels
NOTE: There three test channels that read: Ref+, Ref-, Ref+/2. Specify read Ref+, read Ref-, read Ref+/2. 232SDA124597 Manual
Electronics Dayton 1040 Ottawa, 61350 (815) 433-5100 (815) 434-7094
Reading Digital Command
Read Digital command returns byte which represents states digital input digital output states. Bits correspond states digital inputs Bits correspond states digital outputs then digital state that digital LOW. then digital state HIGH. Refer Table 3.5. Command Syntax Unit Response {states} Where {states} byte which Bits corresponds current states Digital Outputs Bits corresponds current states Digital Inputs Table Read Digital Response Outputs Response Byte Digital Outputs HIGH HIGH HIGH HIGH HIGH HIGH HIGH HIGH HIGH HIGH HIGH HIGH
Table Read Digital Response Inputs Response Byte Digital Inputs HIGH HIGH HIGH HIGH HIGH HIGH HIGH HIGH HIGH HIGH HIGH HIGH
232SDA124597 Manual
Electronics Dayton 1040 Ottawa, 61350 (815) 433-5100 (815) 434-7094
Digital Output Command
Digital Output command used states digital output lines. This command requires data byte. data byte used specify output states. Bits correspond states digital outputs then output will LOW. then output will HIGH. Refer Table 3.6. NOTE: This command ignores Bits data byte. Command Syntax Where {states} byte which Bits correspond outputs states Digital Outputs Unit Response response Table Digital Output Data Byte Values Data Byte Digital Outputs HIGH HIGH HIGH HIGH HIGH HIGH HIGH HIGH HIGH HIGH HIGH HIGH
232SDA124597 Manual
Electronics Dayton 1040 Ottawa, 61350 (815) 433-5100 (815) 434-7094
Chapter
This chapter will deal with manipulating reading cover some aspects that were explained Connections chapter.
Sampling Rate
converter conversion time around microseconds, however sampling rate limited serial communications. sampling rate single channel around samples second baud). This rate drops samples second when sampling channels. When reading input, 232SDA12 takes four readings returns average greater rounded these readings. This averaging filters noise.
Input Range
input range 232SDA12 from possible your device output voltage that doesn't fall this range, steps must taken ensure that voltage remains between
Reference Inputs
reference inputs bottom data range. Input- sets bottom data range. Input+ sets data range. Since these inputs directly related data range, important that precision reference used. 232SDA12 reference available. voltage Input+ must least 2.5V greater than Input-. voltage difference between Input+ Input- referred Reference Range. Reference Range (A/D Input+) (A/D Input-) Typically Input- connected Analog ground Input+ connected Figure Chapter shows typical connections reference range
232SDA124597 Manual
Electronics Dayton 1040 Ottawa, 61350 (815) 433-5100 (815) 434-7094
Data Range
data range converter determined Input+ Input-. Input- sets bottom data range. input voltage that less than equal Input- will read zero. Input+ sets data range. input voltage that greater than equal Input+ will read data range follows: Data Range (A/D Input-) (A/D Input+) Data Range Data Range Figure shows Data Range Inputs relationship.
Figure Converter Data Range
Converting Data
data read from 232SDA12 converter directly related input channel reference range (discussed previous sections). 232SDA12 12-bit converter. 12-bit possible output values, These output values divided into equal steps over reference range. size each step computed follows: Step size (Reference Range)
232SDA124597 Manual
Electronics Dayton 1040 Ottawa, 61350 (815) 433-5100 (815) 434-7094
step size also referred resolution. Once step size known, that needed determine voltage input number steps. data returned from 232SDA12 number steps. voltage inputs calculated follows: Voltage steps) (Step size) Example Assume: Ref. Input Ref.Input Therefore: Reference Range (A/D Ref. Input (A/D Ref. Input Reference Range Reference Range Step size (Reference Range) Step size Step size 1.221 millivolts Example reading voltage reading step size voltage 1.221 millivolts voltage Volts Example reading voltage 1.221 millivolts voltage Volts Example reading (2A3H) voltage 1.221 millivolts voltage Volts
232SDA124597 Manual
Electronics Dayton 1040 Ottawa, 61350 (815) 433-5100 (815) 434-7094
Chapter Software
This chapter covers programming techniques such constructing command string, receiving data manipulating data. various steps examples shown QuickBasic. programming another language, these sections used guideline programming 232SDA12.
Read Command
Read channels command returns bytes each channel read. bytes represent most significant byte (MSB) least significant byte (LSB) reading. received first, followed LSB. This command requires data byte. data byte used specify number highest channel read. channels less than this channel will read well. steps reading command given below: Constructing command string: Command$ CHR$(channel) value channel equal highest channel read. Transmitting command string: Print Command$; Receiving data: MSB$ INPUT$(1, LSB$ INPUT$(1, Manipulating data: reading (ASC(MSB$) 256) ASC(LSB$) value reading result conversion. Repeat Steps until each channel been completed.
232SDA124597 Manual
Electronics Dayton 1040 Ottawa, 61350 (815) 433-5100 (815) 434-7094
Example Read channels channel Command$ CHR$(channel) Print Command$; `Get value channel MSB$ INPUT$ LSB$ INPUT$ reading1 (ASC(MSB$) 256) ASC(LSB$) `Get value channel MSB$ INPUT$ LSB$ INPUT$ (ASC(MSB$) 256) ASC(LSB$) value reading1 result conversion channel value result conversion channel
Read Digital Command
Read Digital command returns byte which represents states digital input digital output states. Bits correspond states digital inputs bits correspond states digital outputs then digital state that digital LOW. then digital state HIGH. steps reading digital command given below: Constructing command string: Command$ Transmitting command string: Print Command$; Receiving data: Reply$ INPUT$ Manipulating data: states ASC(Reply$) Determining I/O's status status states mask Repeat Step until status each been determined. "ANDing" value states with appropriate mask line, status determined. status equal zero then line LOW. status equal zero then line HIGH. Table shows mask values each I/O.
232SDA124597 Manual
Electronics Dayton 1040 Ottawa, 61350 (815) 433-5100 (815) 434-7094
Table Digital Mask Values Mask Values Line Hexadecimal Decimal Digital Output Digital Output Digital Output Digital Input Digital Input Digital Input
Example Determining status Digital Input mask Command$ Print Command$; Reply$ INPUT$ states (Reply$) status states mask status equal zero then Digital Input LOW. status equal zero then Digital Input HIGH.
Digital Output States
Digital Output command used states digital output lines. This command requires data byte. data byte used specify output states. Bits correspond states digital outputs then output will LOW. then output will HIGH. NOTE: This command ignores Bits data byte. Constructing command string: Appropriate Outputs HIGH states states mask "ORing" current states with appropriate mask digital output (given Table 5.1), output's data will (which will HIGH).
232SDA124597 Manual
Electronics Dayton 1040 Ottawa, 61350 (815) 433-5100 (815) 434-7094
Appropriate Outputs states states (NOT(mask)) "ANDing" current states with complement appropriate mask digital output (given Table 5.1), output's data will (which will LOW). Construct string Command$ CHR$(states) Transmitting command string: Print Command$; Example Digital Output HIGH Digital Output LOW. states make Digital Output HIGH states states Clear states make Digital Output states states (NOT(4)) Command$ CHR$(states) Print Command$; Digital Output will HIGH. Digital Output will LOW. Digital Output will change. Note that variable states assumed value from Example 5.2.
232SDA124597 Manual
Electronics Dayton 1040 Ottawa, 61350 (815) 433-5100 (815) 434-7094
Appendix Adding Data Field Confirmation
With serial communications laboratory environment, possibility communication error occurring minimal. However, harsh industrial environment possibility increases. communication error occurs when transmitted received vice versa. 232SDA12 receives error more first four command characters unit will execute command. However, 232SDA12 receives communication error data byte (channel byte Read Analog command state byte Output State command), command will executed since unit knowing that there error. provide 232SDA12 with detecting errors data fields, additional commands used. This commands begins with (23h) character, instead (21h) character. Refer Table A-1. With these commands every data byte that transmitted received followed complement. Example read channel zero: Command syntax: Response syntax: msb}{~ lsb} lsb} Where used indicate "complement of." channel reading following would received: Where complement complement complement number calculated QuickBasic follows: comp (NOT &HFF Table Extended Commands Command Response {chxmsb}{~chxmsb}{chxlsb}{~ch {I/O states}{~I/O states} response
Function Read Channels
Where required data byte signifies complement specified byte. 232SDA124597 Manual Appendix
Read Digital Output States
Electronics Dayton 1040 Ottawa, 61350 (815) 433-5100 (815) 434-7094
Appendix Analog Input Impedance
When interfacing with converter, important that device connecting drive input. determine your device drive input, there three factors must consider: Output impedance device Input impedance sampling time goal have voltage input settle voltage close output voltage device time frame that less than sampling time. (close means value significantly less than resolution A/D). voltage does settle fast enough, errors will occur reading, resulting loss resolution. next section, titled "Simplified Analog Input Analysis," contains information from Texas Instruments datasheet TLC1543. TLC1543 converter that used 232SDA12. This section provides simplified calculation which used determine maximum output impedance device have settle input voltage within half LSB. 232SDA12:
100us
Using this information:
170k
output impedance your device should figure additional error LSB. should pointed that this simplified analysis there other several other factors that must considered (pin capacitance, noise immunity, etc.). datasheet TLC2543 states that "The driving source impedance should less than equal 1k." Electronics recommends placing voltage follower between 232SDA12 device with output source impedance greater than
232SDA124597 Manual
Appendix
Electronics Dayton 1040 Ottawa, 61350 (815) 433-5100 (815) 434-7094
Simplified Analog Input Analysis
Using equivalent circuit Figure B-1, time required charge analog input capacitance from within derived follows: capacitance charging voltage given
where
8192) 8192)
final voltage given
Equating equation equation solving time gives
Therefore, with values given time analog input signal settle
ln(8192)
60pF ln(8192
This time must less than converter sample time shown timing diagrams. Input Voltage External Driving Source Voltage Source Resistance Input Resistance Equivalent Input Capacitance *Driving source requirements: Noise distortion source must equivalent resolution converter. must real input frequency.
Appendix
232SDA124597 Manual
Electronics Dayton 1040 Ottawa, 61350 (815) 433-5100 (815) 434-7094
Figure B-1. Equivalent Input Circuit Including Driving Source
232SDA124597 Manual
Appendix
Electronics Dayton 1040 Ottawa, 61350 (815) 433-5100 (815) 434-7094
Appendix Decimal ASCII Table
Table C-1: Decimal ASCII Table
DECIMAL ASCII CONVERSION TABLE
ASCII ASCII ASCII ASCII
ctrl ctrl ctrl ctrl ctrl ctrl ctrl ctrl ctrl ctrl ctrl ctrl ctrl ctrl ctrl ctrl ctrl ctrl ctrl ctrl ctrl ctrl ctrl ctrl ctrl ctrl ctrl ctrl ctrl ctrl ctrl ctrl
232SDA124597 Manual
Appendix
Electronics 1040 Ottawa, 61350 (815) 433-5100 (815) 434-7094
FEDERAL COMMUNICATIONS COMMISSION RADIO FREQUENCY INTERFACE STATEMENT
Class Equipment This equipment been tested found comply with limits Class digital device, pursuant Part Rules. These limits designed provide reasonable protection against harmful interference when equipment operated commercial environment. This equipment generates, uses, radiate radio frequency energy and, installed used accordance with instructions, cause harmful interference radio communications. Operation this equipment residential area likely cause harmful interference, which case user will required correct interference personal expense.
Class Equipment Statement

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