Related Manuals for Maxon ACC-513
Summary of Contents for Maxon ACC-513
- Page 1 ACC-513 / ACC-514 (GMSK / FFSK Modem for SD-160 Series) Technical Manual Rev 0.0 Jul./23/2003 Maxon Telecom Co., Ltd...
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Page 2: Table Of Contents
Contents 1. Introduction................4 2. Technical Specification ............. 5 2.1. Specification for ACC-513 ............. 5 2.2. Specification for ACC-514 ............. 6 3. Installation of ACC-513/ACC-514 ........... 7 4. System Application..............10 4.1. Fixed applications................. 10 4.2. Mobile Applications..............12 5. Operation ................13 5.1. - Page 3 8. Example of Operation Test ............. 30 8.1. Example of using Hyper Terminal..........30 9. Pin-out chart for ACC-513/514..........40 9.1. Pin-out for ACC-513 ..............40 9.2. Pin-out for ACC-514 ..............41 10. product version information..........42 10.1. Version information..............42...
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Page 4: Introduction
1. Introduction The ACC-513 and ACC-514 are internal option-modems, which are applied to the SD- 160 series to increase capability for data application. The goal of an internal modem is to improve the efficiency for data transmission and provide maximum flexibility for user application. -
Page 5: Technical Specification
2. Technical Specification 2.1. Specification for ACC-513 Modulation type : Modified GMSK Maximum RF Baud rate : 4800 for 12.5KHz channel spacing and 9600 for 25KHz channel spacing (Programmable, see below table) : below –113dBm for 1 in 100 error rate... -
Page 6: Specification For Acc-514
2.2. Specification for ACC-514 Modulation type : FFSK Maximum RF Baud rate : 2400 for 12.5KHz channel spacing and 4800 for 25KHz channel spacing (Programmable, see below table) Data Sensitivity : below –110dBm for 1 in 100 error rate Mark /Space tone freq. : 1200Hz (M) / 1800Hz (S) at 1200bps (for each available RF Baud rate) 1200Hz (M) / 2400Hz (S) at 2400bps... -
Page 7: Installation Of Acc-513/Acc-514
3. Installation of ACC-513/ACC-514 To install ACC-513/ACC-514 into the SD-160, this section explains step-by-step of how to disassemble the radio, install the ACC-513/ACC-514 and reassemble the radio. Important Before disassembling and reassembling the radio, wear a conduction wrist strap to prevent any components on its main board from being damaged by electrostatic discharge. - Page 8 Installation of ACC-513/514 : 1. Align 6-pin Header of ACC-513/514 to 6-pin socket on digital B’D and then push header into socket 2. Align the 14-pin Molex female connector of ACC-513/514 to its male connector on the digital B’D. 3. Attached the ACC-513/514 to the digital B’D by pushing down.
- Page 9 Closing the Upper Cover : 1. Align the upper cover with the bottom cover. 2. Close the upper cover. Figure 3.6. Closing the upper cover 3. Screw down the bottom cover of the radio. Figure 3.7. Inserting the four mounting screws...
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Page 10: System Application
4. System Application The SD-160 is a flexible data radio transceiver intended for a wide variety of applications. The basic radio data applications may be divided into several categories, examples of these are : Point to point telemetry (Data logging system) Tele-command and tele-control to / from outstations or machinery Automatic irrigation system Job allocation and status reporting... - Page 11 2. Point to point telemetry using FFSK or GMSK modulation with RS232 control via a micro-controller. User applications for this may include remote control data links such as control of a remote paging transmitter or single direction status reporting or data flow (see Figure 4.2.) from a gas pipeline monitoring station.
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Page 12: Mobile Applications
4.2. Mobile Applications 4. Local area mobile system for job allocation and status reporting to and from taxis. (see Figure 4.4). Host Computer Radio Link Taxi 1 Com1 Com2 Data In/Out Radio Control Commuication Antenna Interface Cable Power Supply SD-160 Taxi 2 Control Point Figure 4.4. -
Page 13: Operation
5. Operation By applying an ACC-513 or ACC-514 to the SD-160, which is intended to be used as a radio data-generating device utilizing GMSK or FFSK type modulation. There is also a facility, called Micro-controller Unit, to control your overall application, including the radio, and to handle data to transmit or receive. - Page 14 (Tx Key) SD-160 transmitter. 0V = Tx This line has an internal pull up resistor to o/c = Rx +5V. Pulling the line to 0V turns on the transmitter. RS-232 level (option) Note : If you installed option modem +12V = Tx board, you can select RS-232 signal level -12V = Rx by Jumper (CON407) on the digital...
- Page 15 The serial protocol supported by the ACC-513/514 is fixed at 1 start bit, 8 data bits, 1 stop bit and no parity. Flow control can be selected as either hardware (RTS/CTS), software (XON/XOFF) and none. The serial baud rate is also user configurable and supports the following rates: 1200, 2400, 4800, 9600bps.
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Page 16: Configuring The Sd-160
DB-9 CONNECTOR DB-15 for Data Communicaiton CONNECTOR DB-9 CONNECTOR for Radio Control to SD-160 through Serial command RS-232 level DB-9 DB-9 converter CONNECTOR CONNECTOR BUSY SERIAL DATA OUT (OPT) SERIAL BUSY OUT (OPT) SERIAL IN (PROG.) PTT IN SERIAL DATA IN (OPT) DB-15 SERIAL OUT (PROG.) CONNECTOR... - Page 17 the modem option board by the completion of the RF stabilization. The model contains tunable value for this period of time, which the user can adjust these timings into their system within the limited range. Especially, “Tx On delay” and “Tx Off delay” which are important timing parameters in the transmitter.
- Page 18 So, a minimum period of time is required for synchronization, this is given by modem IC specification and you can adjust this value within the limited range. Detailed other parameters for ACC-513/514 will be given in the next section.
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Page 19: Understanding Modem Option
6. Understanding Modem Option In this section, explanation of modem options in ACC 916, PC Programmer is given. The modem option consists of four groups, MODEM SELECT, SYSTEM OPTION 1,2 and 3. In MODEM SELECT, the type of modem and modem speed for channel space are selectable and in SYSTEM OPTION1, transmission mode of radio and functions of forcing TX and initializing Hyper Terminal are chosen. -
Page 20: System Option 1
Modem Baud Rate Modem Channel Space Baud rate 9600 bps Standard (25KHz) GMSK 4800 bps (ACC-513) Narrow (12.5KHz) 4800 bps 4800 bps Standard (25KHz) 2400 bps FFSK 1200 bps (ACC-514) 2400 bps Narrow (12.5KHz) 1200 bps Table 6.1. Available Modem Baud Rate In above cases, Modem speed is selectable. -
Page 21: System Option 2
6.3. System Option 2 a. Base Block Size 1 This option is about the data size to be transmitted at one time. If data flow control is selected in Auto mode, radio will try handshaking after a transmission of Base Block Size1 according to communication assigned data. -
Page 22: System Option 3
f. Tx Delay Time 2 This is the required time to detect tone, and is only available for the FFSK Modem and channel with Tone (CTCSS/DCS). In case of SD160 series, 250ms (Default) is recommended. g. Number of Allowable Errors for Start Bit This option prevents the radio from receiving invalid data by an external disturbance. -
Page 23: Modem Operation Explained
7. Modem Operation Explained This section explains each operating mode and details the modem serial pin connections. There are two types of modes, Auto and Dumb mode. In Auto mode, the radio is automatically controlled by existence of inputted data from a DTE. To avoid data overflow by limitation of the buffer memory due to continuous input, serial port data flow is controlled by the radio in communication with a DTE. -
Page 24: Software Flow Control
7.1.2. Software flow control This flow control function uses three wires, RXD, TXD and GND in RS232. When DCE is receiving data from DTE, to prevent received data from exceeding the buffer1 capacity in DCE, the DCE sends command of transmission halt request which is XOFF code to the DTE. - Page 25 be transmitted, After the DTE sends RTS signal to the DCE, the DTE waits for a CTS signal from the DCE. If the DTE receives a CTS signal from the DCE, the DTE transmits data. When the DCE is receiving data from the DTE, to prevent received data from exceeding the buffer capacity in the DCE, the DCE sends command of transmission halt request that is the CTS signal to the DTE.
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Page 26: None (No Flow Control)
Hardware preparation Change the jumper position of con407 as the following. CON407 CON407 RV401 (Default) RV402 RV403 SW401 Digital Board (RTS mode only) Figure 7.5. Hardware preparation for Hardware flow control REMARK : RTS mode means the mode which uses RTS signal for radio control. The following modes use the RTS signal. -
Page 27: Dumb Mode
Figure 7.6. Data and Control signal flow in Dumb mode 7.3. Test Mode This operating mode is simple transmission test. The radio transmits programmed data, Testing Maxon Modem ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 ", which " exists in the internal memory of the modem. Refer to ACC 916 user manual for detailed... -
Page 28: Operating Diagram
7.4. Operating Diagram As show below, If the radio has data to transmit and has assigned data block size, when the radio transmits data as much as assigned data block size, if receiving radio receives this data, the radio transmits an Ack signal as indication of successful receipt, sequentially, next data will be transmitted. - Page 29 application in ACC 916 programming software. 6 bits ABDS (Additional Bits to Detect Start data) is to detect more safely the start data. Start data is the beginning bits of valid data and if only these bits are matched with the assigned data bits, the following data is treated as valid.
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Page 30: Example Of Operation Test
8. Example of Operation Test In this section, to help you understand the operation of the radio, a simple example using an operating test application program such as Hyper Terminal is explained Part 8.1 is an example using Hyper Terminal, GMSK modem, modem speed of 9600bps and software flow control. - Page 31 c. Select Com Port1, Click on ‘OK’ d. Select the detail of Com1 port, 9600bps, 8 bits of Data bits, None of Parity, one bit for Stop bits and Xon/Xoff for Flow control and then click the “OK” button. e. Main window appears, click Icon inside red circle.
- Page 32 f. Click the “Settings” tab button. g. Click the “ASCII Setup” button.
- Page 33 h. Check “Send line ends with line feeds” and “Echo typed characters locally” and click the “OK” button. i. By clicking the “OK” button, the software escape from the properties window.
- Page 34 j. If the following main window will be displayed, basic setting-up is completed 8.1.2. Test examples a. Text character communication Type any types of character with keyboard and transmitted text will be displayed in receiving main window.
- Page 35 b. Text file communication 1 Select “Transfer Send Text File” 2 Select text file of about 2K bytes. Click the “Open” and the text file will be transmitted. If there is no text file, you can make one. For your reference, you can determine the size of text file because the text file is only for test.
- Page 36 3 The received text file data is displayed in the main window like the following. c. Any types of data file except text file communication 1 Select “Transfer Receive File”...
- Page 37 2 Determine receiving path and select “Zmodem” of receiving protocol and then click the “Close” button to return to the main window. 3 Select “Transfer Send File”...
- Page 38 4 Determine transmitting file and select “Zmodem” of protocol and then click the “Send” button. 5 The following pop-up box appears and state of the file transmission is displayed.
- Page 39 6 In receiving side, the following pop-up box appears and state of file reception is displayed. 7 If transmission and reception of file have finished, each pop-up box is automatically closed.
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Page 40: Pin-Out Chart For Acc-513/514
9. Pin-out chart for ACC-513/514 9.1. Pin-out for ACC-513 Connector Input/ Function Description Output 6V to 12V Power Input Ground Signal from the digital board to enable transmitter circuit of modem board. TXD_EN It ensures that the radio has stabilized in transmission before the data is processed for modulation. -
Page 41: Pin-Out For Acc-514
9.2. Pin-out for ACC-514 Connector Input/ Function Description Output 6V to 12V Power Input Ground Signal from the digital board to transmit data key the SD-160 transmitter TXD_EN It ensures that the radio has stabilized in transmission before the data is processed for modulation. TX_END To finish transmission, it indicates memory buffer of Master MCU of digital board is empty. -
Page 42: Product Version Information
10. product version information 10.1. Version information The modem contains a modem firmware version string, “Copyright 2003-2004 Maxon Telecom CO., LTD Version 1.0d”. After item of “initializing data for HT” of modem option in ACC 916 is enabled, if the radio is turned on, information of the modem...
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