EXHIBIT 4 User Manual thf CHIS HEIR GROUP RF-LINK SYSTEMS INC. Cy ee FCC ID.
FCC ID: MIBRF60102 } * | RF-Link System Inc. / Wireless RS23Z, Model RF-60102-XX QTKY9-F002A: 2.4 GHz Spread Spectrum Transceiver : QTK99-F00ZB: Class B Computing Device Peripheral FCC Compliance Statement This equipment has been tested and found to comply with limits for a Class B digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against armful interference in residential installations.
Typical Use Application The Wireless RS232 can be used to provide numerous applications including: Add portability to your laptop computer enabling you to access the INTERNET + In your bedroom + In your yard or patio ¢ In your living room while watching television Share a single modem between two different computer users in the same house PC to PC Communication (FTP) ( Base unit configure to DCE, remote unit configure to DTE plus null modem) PC Surveillance application Any communication between two RS232 in
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Queue-Foo 2 4 [ova . fee zp: MILE Goon The Base Unit is connected to the computer through the standard RS-232 (COM or COM) port an the computer. Check to make sure that the Reconfiguration switch is in the DCE position.
Software Installation The (wo floppy disks that come with the Wireless R$232 contain the configuration application that will allow you to change channels and security codes used by the system. To install the software application, follow the steps below: 1. Twn on the computer and enter Windows. 2. Insert the first floppy disk into your computer floppy drive 3, From Windows 95 or 98 start bar, select the “Run command 4. Enter setup. For example, if the Setup disk is in drive A, enter setup 5.
« Both the remote unit and the base unit must use the same address in order to operate correctly. If the two units do not have the same address the Wireless RS232 will not operate properly. o For best performance (fastest data rate), it is recommended that the baud rates for both the modem and base units be set to 115200 baud. s Both the remote unit and the base unit must use the same channel number. If the two units do not have the same channel number the Wireless R$232 will not operate properly.
Operating Conditions Parameter Value Operating temperature High 40°C Low 0c Storage temperature High 60°C Low -10°C Relative Humidity 85% RS-232 interface 25-pin (DB-25) 9 pin (DB-9) Pin name Pin name Direction Direction connector connector abbreviation for DTE for DCE 1 Protective Ground GND z 2 Transmit Data IXD Input Output 3 2 Receive Data RXD Output Input 4 7 Ready to Send RTS Input Output 5 8 Clear to Send CTS Output Input 6 6 Data Set Ready DSR Output Input 7 5 Signal Ground GND Data Carrier DCD Outp