Multitech MT56DSU-S Guía de usuario descargar pdf (Pagina 21)

21

Chapter 4 - Diagnostics

4.1.2 Line Loopback Test

This test enables you to test the local DTE, the local DSU, the communications link, and the remote DSU. Use

the following steps to perform the Trunk Loopback Test.

1. Set DIP switch #3 on the remote DSU to the down position.

2. Send data from the local DTE, it should be looped back to the local DTE. If you have access to a Bit Error

Rate Tester, this can be used in place of the local DTE.

Local DSU

Network

Local DTE

(or BERT Tester)

Remote DSU

(In Line Loopback Test Mode)

Figure 4-2. Line Loopback Test Diagram

4.1.3 DSU Loopback Test

This test lets you verify proper DSU operation by matching a transmitted signal to the “looped-back” receive

signal. Refer to Appendix B for cable description.

1. Obtain a DSU Loopback cable (#45640100) from Multi-Tech, or assemble one. Refer to Appendix B for

instructions on building the Loopback cable.

2. Plug the Loopback cable into the back panel Line jack.

3. Send data from your DTE, it should be “looped back” to your DTE. If you have access to a Bit Error Rate

Tester, this can be used in place of the DTE.

Loopback

Cable

DSU

being tested

DTE

Figure 4-3. DSU Loopback Test

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Sony CDX-4270R Manuale Utente (48 pagine)

Marchio: Sony | Categoria: Car media receivers | Dimensione: 1.21 MB |

Tedesco

Russo

Indice

FM/MW/LW

1

Compact Disc

1

Willkommen!

2

Geräts in einem Auto mit

4

ACC oder I

4

Vorbereitungen

5

Einstellen der Uhr

6

CD-Player

7

Wiedergeben einer CD in

8

Automatisches Speichern

8

Speichern der

9

Überblick über die

10

RDS-Funktion

10

Anzeigen des

10

Sendernamens

10

Automatisches

11

Neueinstellen eines

11

Senders

11

Empfangen von

12

Verkehrsdurchsagen

12

Speichern von RDS

13

Sendern mit AF- und TA

13

Suchen eines Senders nach

14

Programmtyp

14

Weitere Funktionen

15

Der Joystick

16

Einstellen der

17

Klangeigenschaften

17

Stummschalten des Tons

17

Wechseln der Klang- und

18

Anzeigeeinstellungen

18

Informationen

19

Sicherung (10 A)

20

Rückseite der Frontplatte

20

Ausbauen des Geräts

21

Technische Daten

22

Störungsbehebung

23

RDS-Funktionen

24

Поздравляем с

26

Содержание

27

2 3 4 5 6 7 8 9110

28

Подготовка к

29

Установка часов

30

Проигрыватель

31

Радиоприемник

32

Обзор функции RDS

34

Индикация названия

34

Автоматическая

35

Прослушивание

36

Предустановка станций

37

RDS с данными AF и ТА

37

Нахождение станции

38

Прочие функции

39

Использование

40

Подстройка

41

Приглушение звука

41

Изменение заданных

42

Дополнительная

43

Уход за аппратом

44

Демонтаж аппарата

45

Технические характеристики

46

Устранение неполадок

47

Прием радиопрограмм

48

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