Gebruiksaanwijzing /service van het product 2701/D van de fabrikant Patton electronic
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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 .
2 CONTENTS 1.0 Warranty Information ................................................................. 4 1.1 Radio and TV Interference ............................................................ 4 1.2 CE Notice ........................................
3 A.5 Line Framing ............................................................................... 21 A.6 CRC-4 Multiframing .................................................................... 21 A.7 Clocking .........................................
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.
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 .
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 .
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.
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 O.
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.
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.
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.
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.
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.
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.
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.
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.
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 .
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.
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 .
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 .
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.
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.
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 RT.
24.
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.
26.
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 (.
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.
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