Siemens ET1 Series Informations techniques télécharger pdf (Page 8)

INTRODUCTION

1-4

1.3 Hardware description

The ETx can be installed in any I/O slot (slot 1 to 16) of TRS-32M. The outlook

and description of faceplate is shown below (ET1 9011U for example, refer to

page 1 for outlook of other models):

SEL

SCAN

RST

EXT CLK

CRAFT

9012U

ET2

1 2

ALM

TEST

AIS

SYNC

Figure 1-4 ET1 9012U

Faceplate

Connectors

TX / RX

Connector for E1 interface

EXT CLK Inlet of external SYSTEM

CLOCK (network clock)

CRAFT

RJ-45 phone jack socket for

connecting console terminal

RS-232 characteristics

Table 1-1 Faceplate Connectors

LED indicators

SEL

Selection indicator

selected by LCD front

RED = Selected

OFF = Not selected

SCAN

Indicator of polling

activity

Blinking if polled by NMC-32

SYNC

E1 synchronization

status indicator

RED = Loss of

Synchronization

GREEN = Synchronized

ALM

Alarm indicator RED = Alarm detected (read

section 2.5.4 for complete list of

alarms)

OFF = No active alarm

TEST

Test mode indicator YELLOW = Test on going

(read section 2.5.3 for available

test functions)

OFF = Normal operational

mode

AIS

AIS indicator RED = AIS signal detected

OFF = Normal operation

panel

Table 1-2 Faceplate LED indicators

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 25 26

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Siemens ET1 Series Informations techniques Page 8

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