Instruction/ maintenance manual of the product X.21 Patton electronic
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I NTERFACE C ONVERTER , V .24 TO X.21 2021P (CTS IC-V .24/X.21) I NST ALLA TION AND O PERA TIONS M ANUAL Doc#: 172001UA Part#: 07M2021P-A B February 21, 2000 An ISO-9001 Certified Company Copyright© 2000 Patton Electronics Co.
172001UA i T able of Contents CHAPTER 1 - Operation CHAPTER 2 - SETUP AND INST ALLA TION Installation .................................................................................... 2-1 Selection of DTE/DCE .......................................
172001UA ii PROPRIETARY NOTICE The information contained herein is proprietary and confidential to Patton Electronics Co. Any reproduction or redistribution of this publication, in whole or in part, is expressly prohibited unless written authorization is given by Patton Electronics Co.
172001UA CHAPTER 1 - Operation The Patton 2021P (CTS TCB-V.24/X.21) is an EIA RS-232 to CCITT X.21 interface converter with a built in tail circuit buffer, allowing modem to modem interconnection. The interface converter operates bi-directionally. DCE / DTE selection of each port permits interfacing an RS-232 terminal or modem to an X.
172001UA CHAPTER 2 - SETUP AND INST ALLA TION Installation Set the switches to match the required configurations based on the diagrams below. The cabling between each device and the interface converter must be terminated with male connectors. J1 is the RS-232 / V.
172001UA 2-2 slaved to this clock. To connect a X.21 terminal type device (DTE) to an RS-232 Modem type device (DCE), connect the terminal to J2 and the Modem to J1. Move SW1 and SW2 to the DTE position, and SW3, SW4 and SW5 to the DCE position, as shown in Fig.
172001UA 2-3 I Po wer T S R J3 C Fa cto ry Tes t Stra ps Mu st be Ins tall ed f o r U nit To O per at e C or re ct ly J1 (RS- 23 2) Is a DTE, an d MU ST Co nn ec t t o a Mo de m (D CE) J 2 ( X.2 1) Is a D TE, a nd MU ST C o n ne ct t o a M o dem ( DC E) J2 X.
172001UA A-1 APPENDIX TECHNICAL SPECIFICA TIONS Applications RS-232 to CCITT X.21 interface conversion Capacity One RS-232 Channel One CCITT X.21 Channel Buffer Bidirectional 8-bit ring buffer Data Format Transparent to Data Data Rates Up to 128Kbps Electrical Interface RS-232 and V.
172001UA A-2 Shield (co mmon) Tr a ns m it (A) (f ro m DT E ) Con tro l( A) ( fro m DTE ) Rece ive(A) (from DCE) Ind ic ati o n(A ) (fr om DCE) Si g na l T i min g(A ) (f r o m DC E) GND (c omm on ) T.
B Sales: 301 975-1000 Suppor t: 301 975-1007 W eb Address: http://www .patton.com 7622 Rickenbacker Drive Gaithersburg, MD 20879.
An important point after buying a device Patton electronic X.21 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Patton electronic X.21 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Patton electronic X.21 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Patton electronic X.21 you will learn all the available features of the product, as well as information on its operation. The information that you get Patton electronic X.21 will certainly help you make a decision on the purchase.
If you already are a holder of Patton electronic X.21, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Patton electronic X.21.
However, one of the most important roles played by the user manual is to help in solving problems with Patton electronic X.21. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Patton electronic X.21 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
