Beijing Raisecom Science & Technology Co., Ltd. http://www.raisecom.com RC802-30B-FV35 Series N×64K V.35 Interface Fiber Optic Modem User Manual Beijing Raisecom Science & Technology Co., Ltd.
Beijing Raisecom Science & Technology Co., Ltd. http://www.raisecom.com CONTENTS CHAPTER 1. RC802-30B-FV35 INTRODUCTION .....................4 1.1 DESCRIPTION .....................................................................................................................4 1.2 PRODUCT SPECIFICATIONS.......................................................................................................4 1.2.1 Fiber Optic Interface Specification............................................................
Beijing Raisecom Science & Technology Co., Ltd. http://www.raisecom.com 4.1 CAUTIONS BEFORE APPLYING THE POWER SUPPLY ...............................................................14 4.2 CONNECTION DIAGNOSIS ................................................................................................14 4.3 FAULT-PASS-THROUGH FUNCTION ...................................................................................15 4.4 FAQS ...........................................................................
Beijing Raisecom Science & Technology Co., Ltd. http://www.raisecom.com Chapter 1. RC802-30B-FV35 Introduction RC802-30B-FV35 series modular N*64kbps V.35 interface fiber optic modems are devices that are deployed to transmit V.35 signals on fiber optics. They are widely used equipment in constructing Wide Area Networks, and provide solutions for connecting Routers distantly. RC802-30B-FV35 supports remote management function, and it can be deployed at the local site to realize the remote management. 1.
Beijing Raisecom Science & Technology Co., Ltd. http://www.raisecom.com 1.2.2 V.35 Interface Specification Physical characteristics: Connector type： Working mode： Interface bit rate： Complies with V.35 interface standard HDB26 female connector DCE V.35 interface bit rate is N×64Kbps（N=1~31）at E1 fractional mode; V.35 interface bit rate is 2048Kbps at E1 transparent mode 1.2.3 V.35 Signal Bandwidth Engrossment of Timeslots at E1 Fractional Mode The engrossment of timeslots in PCM31 In PCM31, N ≤ 31, No.
Beijing Raisecom Science & Technology Co., Ltd. http://www.raisecom.com 1.3 Equipment Interconnection When connecting with other optical multiplexers, it is required to follow the instructions below. Otherwise, link faults or abnormal data transmission may occur. Chapter 2. Recommended Connection Type 2.1 Precautions before Connection 2.1.1 Three Types of Timing Resource Master Clock Mode: The timing resource is provided by the crystal oscillator inside the equipment, also called Internal Clock.
Beijing Raisecom Science & Technology Co., Ltd. http://www.raisecom.com 2.2.1 Point-to-point Fractional Mode, ‘Master Clock – Slave Clock’ Topology When connecting Routers or other V.35 interface equipment point to point, Routers shall work as DTE. For the convenience of installation and test, it is advised to set the local modem ‘Master Clock Mode’, and remote modem ‘Slave Clock Mode’. That is, the timing resource is from the local modem.
Beijing Raisecom Science & Technology Co., Ltd. http://www.raisecom.com The bit rate at V.35 interface will be 2048kbps. Master Clock Optical Fiber Master Clock RC802-30B-FV35 RC801-30B-FV35 V.35 DTE wire V.35 DTE wire Router Router Extended Connection Type RC802-30B-FV35 cannot be interconnected with other brand name V.35 interface fiber optic modems. However, users can adopt RC800-30B series E1 fiber optic modem, which will convert the optical signals to G.
Beijing Raisecom Science & Technology Co., Ltd. http://www.raisecom.com Chapter 3. Preparation Please read this chapter carefully before installing the equipment. 3.1 Description of the Front Panel DCE TX RX ALM PWR 3.1.1 Definition of the Indicators PWR. Power supply indicator (green): Steady on, built-in power works in good condition. ALM.
Beijing Raisecom Science & Technology Co., Ltd. http://www.raisecom.com Request to Send — RTS I 4 Clear to Send — CTS O 5 Data Set Ready — DSR O 6 Data Carrier Detect — DCD O 8 Data Terminal Ready — DTR I 20 I --- input; O --- output. 3.1.3 Fiber Optic Interface For the dual-strand models, the fiber optic interface is DSC/PC. TX stands for optical signal output (transmit); RX stands for optical signal input (receive). 3.
Beijing Raisecom Science & Technology Co., Ltd. http://www.raisecom.
Beijing Raisecom Science & Technology Co., Ltd. 1. 2. 3. http://www.raisecom.com The series modems are deployed point to point, and in pairs. There is no PCM equipment (i.e. DXC, MUX) that takes up the No. 0 timeslot in the link. Neither of the equipment at both sides shall be set to transparent mode (N is not 0). When all the conditions are met, user can set Master Control at one site, and Slave Control at the other site. The first 5 bits switches can be set to all OFF.
Beijing Raisecom Science & Technology Co., Ltd. http://www.raisecom.com 3.3 Dip-switch SW2 Setup on the Bottom Panel 3.3.1 The 1st ~ 6th Bits Definition 1st bit 2nd bit 3rd bit 4th bit 5th bit 6th bit Definition TX CLK phase RX CLK phase PCM30/31 Option CRC function option Loop-back test Loop-back option ON Negative Negative PCM30 Disable Loop-back Local Loop-back OFF Positive Positive PCM31 Enable Normal Remote Loop-back Since the relationships between V.
Beijing Raisecom Science & Technology Co., Ltd. http://www.raisecom.com Remote loop-back: Remote equipment realizes bidirectional loop-back. Fiber optical interface of remote equipment realizes loop-back for local equipment, and V.35 interface of remote equipment realizes loop-back for DTE side. As the above figure, the 5th bit is switched to ON, and the 6th bit is switched to OFF. If the optical fiber is connected properly, the loop-back status can be viewed at the port of local and remote Router. 3.3.
Beijing Raisecom Science & Technology Co., Ltd. http://www.raisecom.com 1. Local V.35 interface loop-back. Refer to previous dip-switch setup for details. If the Router indicates loop-back successful, the V.35 interface is working in good condition. If the Router indicates loop-back fails, please first check the timing resource and bandwidth setup at local site, and try to adjust the TX CLK and RX CLK phase option switch. 2.
Beijing Raisecom Science & Technology Co., Ltd. http://www.raisecom.com be located by performing local V.35 interface loop-back test. 3． Cable loose. Compatibility with similar equipment of other brands Answer: Raisecom RC802-30B-FV35 cannot cooperate with similar products of other brands. It is because the signal coding and protocols at optical interface are different. However, users can refer to Chapter 2.3 for details of extended connection types. Compatibility with other Raisecom V.
Beijing Raisecom Science & Technology Co., Ltd. http://www.raisecom.com Copyright Declaration： Beijing Raisecom Science & Technology Co., Ltd. is the owner of this manual booklet. The part or whole of this manual is not allowed to reproduce without Raisecom’s permission. All rights Reserved.
