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3.2.2  System Configuration

The System Configuration menu looks like this:

The System Configuration options are described below:

Line Format: G.703

(default)

Options:  G.703, G.704

G.703:  G.703 is unframed, 2.048Mb/s. In this case, the DTE rate

is equal to the line rate at the network interface (NI). CAS MF
and CRC-4 are disabled.

G.704: G.704 reserves TS0 for signaling and frame alignment.

Maximum data rate depends on whether CAS MF is enabled
or not.

15

16

Line Coding:  HDB3

(default)

Options:  HDB3, AMI

HDB3:  In this line coding, the transmitter substitutes a deliberate

bipolar violation when excessive zeros in the data stream are
detected. The receiver recognizes these special violations
and decodes them as zeros. This method enables the net-
work to meet minimum pulse density requirements. Unless
AMI is required in your application, HDB3 should be used
whenever possible.

AMI: Alternate Mark Inversion defines a pulse as a "mark,”  a

binary one, as opposed to a zero. In a E1 network connec-
tion, signals are transmitted as a sequence of ones and
zeros. Ones are sent as pulses, and zeros are sent as
spaces, i.e., no pulse.  Every other pulse is inverted from the
previous pulse in polarity, so that the signal can be effectively
transmitted. This means, however, that a long sequence of
zeros in the data stream will cause problems, since the NTU
receiving the signal relies on the signal to recover the 2.048
Mb/s clock. If you must use AMI, you should ensure that the
data terminal equipment connected to the unit provides a min-
imally acceptable pulse density. For this reason, there are
advantages to using HDB3 instead.

a

b

Summary of Contents for 2094

Page 1: ..._________________________________ __________________________________________ __________________________________________ __________________________________________ _____________________________________...

Page 2: ...arts and labor If any questions or problems arise during installation or use of this product please do not hesitate to con tact Patton Electronics Technical Services at 301 975 1007 1 1 WARRANTY STATE...

Page 3: ...Model 2094 has been tested and found to com ply with the limits for a Class A computing device in accordance with the specifications in Subpart J of Part 15 of FCC rules which are designed to provide...

Page 4: ...o the V 35 DTE interface of a router switch FRAD multiplexer or other network ing device The Model 2094 supports all necessary G 703 G 704 diagnostics DTE local remote loops and V 54 loop up loop down...

Page 5: ...s all possible hardware and software switch configurations of the Model 2094 3 1 DIP SWITCH CONFIGURATION The Model 2094 has eight internal DIP switches that allow configu ration for a wide range of a...

Page 6: ...e upper four bits The alignment word is always 0000 binary The 2094 does not perform any signaling in TS16 other than to insert the MF alignment word in order to maintain MF alignment When CAS MF is d...

Page 7: ...nabled 3 Here is an example of a terminal emulator setup session In normal font are the various parameter types In bold type are the values that should be used for best results Your terminal program s...

Page 8: ...or the network performance initiate V 54 loops local loops and send test patterns Network performance parameters are updated once a second giving you the ability to quickly deter mine if there is a pr...

Page 9: ...os This method enables the net work to meet minimum pulse density requirements Unless AMI is required in your application HDB3 should be used whenever possible AMI Alternate Mark Inversion defines a p...

Page 10: ...64kb s timeslots num bered 0 to 31 TS16 of the first frame in the MF contains the CAS MF alignment word in the upper four bits The alignment word is always 0000 binary The 2094 does not perform any si...

Page 11: ...e the unit to use the DIP switches as the default configuration source by turning off the unit set ting all the DIP switches to the ON position then powering on the unit This will cause the unit to en...

Page 12: ...en sends an all ones pattern before returning to the Idle state TxP The Model 2094 is sending a test pattern while in Test Mode IdlP The Model 2094 is sending a test pattern in place of data The Model...

Page 13: ...ault Header Line 1 Header Line 2 Headers 1 and 2 are provided for easy identification of your unit after installation You may want to give each unit a unique name via the header lines to help distingu...

Page 14: ...r interfaces This section briefly describes connection to each 4 1 DTE INTERFACE CONNECTION The DTE interface is a V 35 DCE presented as an M 34 male connec tor This interface is designed to plug dire...

Page 15: ...in KK on the interface you must change the setting of the power supply jumper on the printed cir cuit board See Appendix E All power sources must be SELV Circuit Safety Extra Low Voltage specified See...

Page 16: ...st the NTU and any communication links These tests can be activated via the software control port See Section 3 2 3 System Diagnostics or via signals on the serial port interface 5 2 1 Operating Local...

Page 17: ...or 2 20 bits respectively using a mathematical polynomial The receiving model 2904 then decodes the received bits using the same polynomial If the received bits match the agreed upon pseudo random pat...

Page 18: ...C Dimensions 9 0 x 5 3 x 2 0 cm 3 5 L x 2 1 W x 0 78 H APPENDIX B PATTON MODEL 2094 CABLE RECOMMENDATIONS The Patton Model 2094 has been performance tested by Patton technicians using twisted pair ca...

Page 19: ...ale UI 10 09F 6 Foot Control Port Cable 25 mm to DB9F 08055DCUI Universal Input Power Supply 10 CISCO V35FT 1 Cable V35 M 34 Female To LFH60 Male 07M2094 User Manual APPENDIX D PATTON MODEL 2094 INTER...

Page 20: ...ock DCE Source AA TC Transmitter Clock DCE Source KK Aux Power Input 5VDC 300mA APPENDIX E PATTON MODEL 2094 POWER SUPPLY INTERFACE Via Main 5VDC power jack J1 Center Pin 5VDC 300 mA Outer Barrel Grou...

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