Related Manuals for ATL AM2048A OS
Summary of Contents for ATL AM2048A OS
- Page 1 U S E R G U I D E AM2048A OS/OM ATL part no: 1/187/500/617 Issue 02 - October 2002...
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Page 2: Compliance Notes And Safety Instructions
Note: The information contained in this document is supplied without liability for errors or omissions. ATL Telecom Ltd Limited reserves the right to make changes to this document at any time without notice. Compliance Notes and Safety Instructions: Caution – Hazardous voltage inside the equipment... -
Page 3: Table Of Contents
4.8.1.4 X.21/V.35 DCE to X.21/V.35 DCE essential requirements of the ‘R&TTE directive 1999/5/EC’. 4.8.2 Tandem Section – External Timing * A copy of the Declaration of Conformity is available upon request from ATL Telecom Ltd. 4.8.2.1 X.21/V.35 DTE-to X.21/V.35 DCE... - Page 4 ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A OS/OM AM2048A OS/OM 4.8.2.2 G.703-to X.21/V.35 DCE 7.6.2 X.21 4.8.3 Crossing an SDH Network 7.6.3 V.35 4.8.4 Crossing a PDH Network 7.6.4 e-PIM G.703 OPTIONS FRONT PANEL 4.9.1 Impedance 7.7.1 Controls 4.9.2...
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Page 5: S C O P E
A P P E N D I X A - X . 2 1 / V . 3 5 C L O C K O P T I O N S ATL Telecom Ltd in the U.K. It provides guidance for installation and commissioning of the products, as well as useful reference information. -
Page 6: I N T R O D U C T I O N
Desktop units are AM2048A and rack mount units are AM2048B. This manual covers the desktop units. The AM2048A OS provides full duplex transmission at 2.048Mbps over a single single-mode optical fibre. The AM2048A OM provides full duplex transmission at 2.048Mbps over a single multi-mode optical fibre. -
Page 7: Example Applications
ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A OS/OM AM2048A OS/OM EXAMPLE APPLICATIONS 2.1.3 Rack mount modem to desktop modem The diagrams below illustrate some basic applications: RS-232 or 10BaseT 2.1.1 Desktop modem to desktop modem, no external timing... -
Page 8: C O N S T R U C T I O
ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A OS/OM AM2048A OS/OM C O N S T R U C T I O N FIGURE 3.1 DESKTOP UNIT The desktop unit is housed in a grey non-flammable plastic case (UL94 rating V0). -
Page 9: I N S T A L L A T I O
ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A OS/OM AM2048A OS/OM On the rear panel there are the following connectors: I N S T A L L A T I O N –48V DC supply inlet socket 3-pin mini-fit... -
Page 10: Default Settings
ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A OS/OM AM2048A OS/OM DEFAULT SETTINGS It is possible to set Master/Slave by using the front panel buttons if a terminal is unavailable, see section 7.7.1. The factory default is for the unit to be configured as a slave (NTU). For all modes of operation, one unit must be set to master mode, while the other unit must be set to slave To change the setting using the terminal go to the “Configuration>Master/Slave”... -
Page 11: Selecting The Circuit Configuration
ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A OS/OM AM2048A OS/OM The AM2048 automatically restricts the maximum value of N to match the number of 4.8.1 Standalone Section transmission lines enabled and the transmission line rate selected in the Single Fibre “Configuration>Master/Slave”... - Page 12 ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A OS/OM AM2048A OS/OM Using the “Configuration > User Port” Menu: 4.8.1.3 G.703 to X.21/V.35 Internal Timing At the ELU, select the ‘Transparent’ timing option. Slave terminals are connected to the digital section at both ends, a clock inside the Master Using F8, cycle to the NTU user port, select the ‘Transparent’...
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Page 13: G.703-To X.21/V.35 Dce
ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A OS/OM AM2048A OS/OM 4.8.2 Tandem Section – External Timing 4.8.2.2 G.703-to X.21/V.35 DCE For the following configurations, the modems are connected in series with another Terminal AM2048 AM2048 Terminal transmission system or equipment that is the source of timing. -
Page 14: Crossing A Pdh Network
ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A OS/OM AM2048A OS/OM 4.8.4 Crossing a PDH Network 4.9.3 Framing Timing Timing 4.9.3.1 Unstructured Operation AM2048A AM2048A AM2048A AM2048A Network CRC4 Customer Customer Slave Master Master Slave Terminal Terminal CRC4M CRC4G HDSL G.703/X.21/V.35/10BaseT/USB... -
Page 15: Structured Operation
ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A OS/OM AM2048A OS/OM 4.9.3.2 Structured Operation 4.9.3.3 Structured Working, CRCs Enabled CRC4 CRC4 CRC4 CRC4M HDSL CRC4G CRC4M HDSL CRC4G CRC4M CRC4G CRC6 CRC6 CRC4G CRC4M HDSL CRC4M CRC4M CRC4G HDSL... -
Page 16: Ets 300 233 Loopbacks
ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A OS/OM AM2048A OS/OM 4.9.4 ETS 300 233 Loopbacks Table 2 Loop-back code definitions Loop 1 and Loop 2 may be activated by sending patterns using spare bits 5 and 6 in TS0. -
Page 17: C O M M I S S I O N I N G
ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A OS/OM AM2048A OS/OM C O M M I S S I O N I N G Once the equipment is correctly installed, it may be necessary to monitor the quality of service before putting live traffic on the circuit, depending on the installation rules of the network. -
Page 18: T R A N S M I S S I O N P E R F O R M A N C E
ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A OS/OM AM2048A OS/OM T R A N S M I S S I O N P E R F O R M A N C E END TO END DELAY The transit delay from one end of the system to the other is < 700uS. -
Page 19: I N T E R F A C E S
ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A OS/OM AM2048A OS/OM I N T E R F A C E S MAINS POWER SUPPLY If a 48V DC power supply is not available, mains to 48V converters are available. -
Page 20: Optical Transmission Line
The alarm port provides 6 logic level inputs, and the contacts of two changeover relays. Molex female contact Molex Part Number: 39-00-0039 The pin-out is shown below: The DC Power Cable can be ordered from ATL Telecom, ATL Part Number (See Appendix B). RELAY 1 CLOSED = Urgent Alarm CABLE AM2048A DC POWER 6/910/000/423... -
Page 21: Interface Modules
ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A OS/OM AM2048A OS/OM INTERFACE MODULES 7.6.2 X.21 ITU recommendation V.11 refers to ISO 4903 for the connector pin-out. 7.6.1 G.703 Circuit Interchange Circuit Name Pins Definition The 75ž Ohm interface connectors are BNC. -
Page 22: E-Pim
ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A OS/OM AM2048A OS/OM 7.6.3 V.35 7.6.4 e-PIM ITU recommendation V.35 refers to ISO 2593 for the connector pin out. The Ethernet port is 10BaseT and the connector is RJ45, the pin-out is shown below. -
Page 23: Front Panel
ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A OS/OM AM2048A OS/OM FRONT PANEL 7.7.1 Controls User Local Loop 7.7.1.1 Disabling the Front Panel Controls The modems are delivered with the front panel controls enabled as the default configuration. They can however be disabled to prevent unauthorised persons from using them to interfere User with the settings of the modem. -
Page 24: I N T E R N A L L I N K S A N D F U S E S
ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A OS/OM AM2048A OS/OM I N T E R N A L L I N K S A N D F U S E S G.703 PLUG IN MODULE The following diagrams show the location of the internal hardware links. -
Page 25: Plug In Module Mk
ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A OS/OM AM2048A OS/OM X.21 PLUG IN MODULE MK II MOTHERBOARD The X.21 module may be configured as a DCE or DTE. The 120 termination is always in. The fuse FS400 is a 1A slow blow fuse to protect the DC input. -
Page 26: F R E Q U E N T L Y A S K E D Q U E S T I O N S
Most versions of Windows running on a PC come with a VT100 terminal emulator, such as HyperTerminal. TeraTerm is the recommended VT100 terminal emulator. This can be downloaded from the Atl telecom web site. http://www.atltelecom.com/transmission/support When I plug in the Terminal Emulator I get strange characters on the screen The bit rate of the serial port is probably set to the wrong speed. - Page 27 “Configuration>User Port” screen and check the value of N (x64) and the given data rate, Atl telecom Transmission technical support is available by fax on +44 29 20 500 850 in the matches the rate expected by the connected data terminal. If there is a doubt, go to the first instance.
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Page 28: S Y S T E M O V E R V I E W
For transmission over single-mode fibre, order the AM2048 OS. For transmission over multi-mode fibre, order the AM2048 OM. The AM2048A OS and AM2048 OM are Class I products in accordance with EN60825-1 and therefore inherently safe. -
Page 29: Dsl Transmission Frame
ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A OS/OM AM2048A OS/OM the end of the download. This minimises the interruption of payload traffic. Also, if 10.2 DSL TRANSMISSION FRAME programming is interrupted, the previous version of software will remain intact. A new Both of the above transmission systems operate in a bit pump mode. -
Page 30: C O M P L I A N C E N O T E S
ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A OS/OM AM2048A OS/OM C O M P L I A N C E N O T E S TTE network statements and the declaration to conformity to EC directive 1999/5/EC are provided inside the front cover of this User Guide together with safety information. - Page 31 ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A OS/OM AM2048A OS/OM G L O S S A R Y Alarm bit in G.704 frame, timeslot 0 Alternating Current Alarm Indication Signal British Telecom CCITT International Telegraph and Telephone Consultative Committee...
- Page 32 ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A OS/OM AM2048A OS/OM Frame Alignment Word Random Access Memory The FC or Face Contact fibre connector features a threaded keyed design. This G.704 Timeslot 0 spare bit n anti-rotation key prevents fiber endface damage. Suitable for both multimode Square fibre connector.
- Page 33 ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A OS/OM AM2048A OS/OM A P P E N D I X A - X . 2 1 / V . 3 5 C L O C K O P T I O N S There is an inherent limitation with X.21 and V.35 standards when timing information is only...
- Page 34 ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A OS/OM AM2048A OS/OM Data clocked out on Data clocked out rising edge of the clock on rising edge of Clock, and data the clock Clock, and data delayed Data sampled delayed relative to...
- Page 35 6/910/000/424 1/187/316 AM2048 RJ45-RJ45 Cable 6/910/000/425 1/187/317 AM2048 RS232 Cable 6/910/000/429 1/187/320 Management Pack n.a. 1/187/350 (Includes VTMS Handbook and RS232 cable) Please note, for details of rack mount versions, CAP, G.SHDSL and optical transmission, please contact your ATL representative.
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