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Patton electronic 2701/B - page 1
USER MANUAL MODEL 2701/B, C, D G.703/G.704 NTU with EIA-530, V .35, X.21 Interfaces SALES OFFICE (301) 975-1000 TECHNICAL SUPPOR T (301) 975-1007 P ar t# 07M2701/X Doc# 086101U Rev . B Revised 1/6/05 An ISO-9001Cer tified Company ...
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Patton electronic 2701/B - page 2
2 CONTENTS 1.0 Warranty Information ................................................................. 4 1.1 Radio and TV Interference ............................................................ 4 1.2 CE Notice ...................................................................................... 4 1.3 Service ...................................... ...
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Patton electronic 2701/B - page 3
3 A.5 Line Framing ............................................................................... 21 A.6 CRC-4 Multiframing .................................................................... 21 A.7 Clocking ...................................................................................... 21 A.8 Time Slot Rate ............................... ...
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Patton electronic 2701/B - page 4
4 1.0 W ARRANTY INFORMATION P atton Electronics w arrants all Model 2701/I components to be free from def ects, and will—at our option—repair or replace the product should it f ail within one year from the first date of shipment. This warranty is limited to def ects in w orkmanship or mater ials, and does not cov er customer damage, ab use , o ...
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Patton electronic 2701/B - page 5
5 1.3 SERVICE All warranty and non-w arranty repairs must be retur ned freight prepaid and insured to P atton Electronics. All retur ns must hav e a Retur n Materi- als A uthorization number on the outside of the shipping container . This number ma y be obtained from Patton Electronics T echnical Ser vices at: • T el: +1 (301) 975-1007 • Email: ...
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Patton electronic 2701/B - page 6
6 2.0 GENERAL INFORMATION Thank you f or your purchase of this P atton Electronics product. This product has been thoroughly inspected and tested and is warranted f or One Y ear par ts and labor . If any questions or problems arise during installation or use of this product, please do not hesitate to contact P at- ton Electronics T echnical Suppor ...
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Patton electronic 2701/B - page 7
7 3.0 CONFIGURATION The Model 2701 f eatures configuration capability via hardware DIP s witches. This section describes all possible DIP s witch configurations of the Model 2701. 3.1 DIP SWITCH CONFIGURATION The Model 2701 has two sets of internal DIP switches that allo w configu- ration f or a wide range of applications. The sets of s witches ...
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Patton electronic 2701/B - page 8
8 Switch SW1-1 thr ough SW1-5 A detailed description of each switch (SW1-1 through SW1-5) setting f ol- lows the summary table below . T able 1: Switch Set 1 Summary T able SW1 SW2 SW3 SW4 SW5 Speed On On On On On 64 kbps Off On On On On 128 kbps On Off On On On 192 kbps Off Off On On On 256 kbps On On Off On On 320 kbps Off On Off On On 384 kbps O ...
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Patton electronic 2701/B - page 9
9 Note When the data rate is set to 2.048Mb/s, the unit is f orced into G.703 mode, and it transmits user data on all 32 time-lots . There is no framing inf or mation; theref ore, the CRC4 MF (SW2-2) switch is ignored. In all other rate settings, the unit emplo ys G.704 framing; TS0 is reserved f or signaling. SW1-6 and SW1-7 Clock Modes Use Switch ...
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Patton electronic 2701/B - page 10
10 SW1-8: Enable/Disable Loop T ests from DTE Use Switch SW1-8 to allow Model 2701 to enter loopbac k tests when the DTE raises the appropriate loop request pin. Switch SW2-1 Line Coding: HDB3 (default) Use Switch SW2-1 to control the Network Line Coding options. Set these options to be the same as the Line Coding given to y ou by your Service Prov ...
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Patton electronic 2701/B - page 11
11 Every other pulse is inv erted from the previous pulse in polarity , so that the signal can be eff ectively tr ansmitted. This means, howe ver , that a long sequence of zeros in the data stream will cause problems , since the NTU receiving the signal relies on the signal to recov er the 2.048 Mb/s clock. If you m ust use AMI, you should ensure t ...
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Patton electronic 2701/B - page 12
12 Switch SW2-4: Remote Digital Loopback T ype The user can set this s witch to select the type of remote loop that will be initiated by the Model 2701. If set to V .54, the Model 2701 will initiate a V .54 loop when Remote Loop is selected by the front panel s witches. If set to CSU , the Model 2701 will initiate a CSU loop when Remote Loop is sel ...
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Patton electronic 2701/B - page 13
13 4.0 INSTALLATION Once the Model 2701 is properly configured, it is ready to connect to the G.703/G.704 interf ace, to the serial por t, and to the power source . This section describes how to make these connections . 4.1 CONNECTING TO THE G.703 NETWORK The P ower , G.703/G.704 and serial Line connections are located on the rear panel of the Mod ...
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Patton electronic 2701/B - page 14
14 (Figure 4) f ollowing the pinout and signals chart below to connect the 120 ohm G.703/G.704 network channel. Figure 4. G.703/G.704 170 ohm Connection. 4.2 CONNECTING THE SERIAL PORT The Model 2701/B, C , D suppor ts RS-530, V .35, X.21 serial por t connec- tions. This section describes how to connect the serial por ts to your ter- minal equipmen ...
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Patton electronic 2701/B - page 15
15 Connecting to a “DCE” Device If the Model 2701 serial interface is hard-wired as a DCE (all e xcept the X.21 version), y ou must use a null modem cable when connecting to a modem, multiple xer or other DCE de vice. This cable should be of the shor test possible length—we recommend 6 f eet or less. Configuring the X.21 Interface (2701/D) T ...
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Patton electronic 2701/B - page 16
16 DC P ower The 36–60 VDC DC to DC adapter supplied with the DC version of the Model 2701 plugs in a DC source (nominal 48 VDC) and plugs into the barrel power supply jac k on the rear of the 2701. Refer to Figure 5 to make the proper connection. Figure 5. Connecting DC P ower to the 2701 DC P ower Supply . W ARNING There are no user-serviceable ...
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Patton electronic 2701/B - page 17
17 5.0 OPERATION When the Model 2701 has been properly configured and installed, it should operate transparently . This sections descr ibes power-up , LED status monitors, and the b uilt-in loopback test modes . 5.1 POWER-UP Bef ore applying power to the Model 2701, please read “P ower Connec- tion” on page 15 and verify that the unit is prope ...
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Patton electronic 2701/B - page 18
18 the identical pattern. When it receives the correct pattern, the LED will turn off. If error inser tion is on, the LED will blink once a second if e verything is operating properly . TM (Active Y ellow) Solid Y ellow indicates an Activ e T est Mode. The unit ma y be placed in test mode by the local user or b y the remote user . 5.3 LOOP (V .54 & ...
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Patton electronic 2701/B - page 19
19 2. V er ify that the data terminal equipment is operating proper ly and can be used f or a test. 3. P erform a V .52 BER (bit error rate) test as described in section “Using the V .52 (BER) T est P atter n Generator” on page 20. If the BER test equipment indicates no f aults, b ut the data ter minal indi- cates a f ault, f ollow the manuf ac ...
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Patton electronic 2701/B - page 20
20 — Set the front panel s witch to “Remote”. 2. P erf orm a bit error rate test (BERT) using the internal V .52 genera- tor (as described in section “Using the V .52 (BER) T est P attern Generator”), or using a separate BER T ester . If the BER test indi- cates a f ault, and the Local Line Loopback test w as successful for both NetLink d ...
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Patton electronic 2701/B - page 21
21 APPENDIX A SPECIFICATIONS A.1 NETWORK DATA RATE 2.048 Mbps A.2 NETWORK CONNECTOR RJ-48C/Dual Coax BNC (2701/D) A.3 NOMINAL IMPEDANCE 75/120 ohm A.4 LINE CODING Selectable AMI or HDB3 A.5 LINE FRAMING G.703 (Unframed) or G.704/G.732 (F ramed) A.6 CRC-4 MULTIFRAMING Selectable On or Off A.7 CLOCKING Internal, Exter nal, or Network (Receive Recov e ...
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Patton electronic 2701/B - page 22
22 A.12 POWER SUPPLY +5 VDC Exter nal power supply/100–240 V AC , 50–60Hz, 0.4A A.13 HUMIDITY Up to 90% non-condensing A.14 T EMPERATURE 0 to 50°C (32 to 122°F) A.15 DIMENSIONS 9.0L x 5.3W x 2.0H cm (3.5L x 2.1W x 0.78H in.) ...
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Patton electronic 2701/B - page 23
23 APPENDIX B INTERF ACE PIN ASSIGNMENT EIA-530 Interface Pin Description (DB-25 Female Connector) (DCE Configuration) Pin # Signal 1 FG (Fr ame Ground) 2 TD (T ransmit Data) 3 RD (Receive Data) 4 RTS (Request to Send) 5 CTS (Clear to Send) 6 DSR (Data Set Ready) 7 SGND (Signal Ground) 8 CD (Carr ier Detect) 9 RC/ (Receive Timing-B) 10 CD/ (Carrie ...
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Patton electronic 2701/B - page 24
24 ...
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Patton electronic 2701/B - page 25
25 APPENDIX C INTERF ACE PIN ASSIGNMENT V .35 Interface (M/34F Female Connector) (DCE Configuration) Pin # Signal B SGND (Signal Ground) C R TS (Request to Send) D CTS (Clear to Send) E DSR (Data Set Ready) F CD (Carrier Detect) H DTR (Data T er minal Ready) L LLB (Local Line Loop) M TM (T est Mode) N RDL (Remote Digital Loop) P TD (T ransmit Data ...
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Patton electronic 2701/B - page 26
26 ...
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Patton electronic 2701/B - page 27
27 APPENDIX D INTERF ACE PIN ASSIGNMENT X.21 Interface (DB-15 Female Connector) (DTE /DCE Configuration) Pin # Signal 1 Fr ame Ground 2 T (T ransmit Data-A) 3 C (Control-A) 4 R (Receive Data-A) 5 I (Indication-A) 6 S (Signal Element Timing-A) 7 BT (Byte Timing-A) 8 SGND (Signal Ground) 9 T/ (T ransmit Data-B) 10 C/ (Control-B) 11 R/ (Receive Data- ...
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Patton electronic 2701/B - page 28
28 APPENDIX E F ACTOR Y REPLACEMENT P AR TS AND ACCESSORIES Cop yright © 2004 P atton Electronics Company All Rights Reser ved. P atton Model # Description 2701/B G.703/G.704 NTU with RS-530 interf ace 2701/C G.703/G.704 NTU with a V .35 interf ace 2701/D G.703/G.704 NTU with an X.21 interface 2701/I G.703/G.704 NTU w/ 10Base-T EN interf ace 0805U ...
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