Ericsson LBI-39001 Instrukcja Operatora Pobierz pdf (Strona 31)

Status Inputs and Outputs

Board LEDs

General Purpose CPU FAIL, STATUS, RUN, and SCON

MIC RUN, FAIL, and STATUS

PRI-48 RUN, FAIL, TRUNK A alarm, and Trunk B alarm

PRI-64 RUN, FAIL, TRUNK A alarm, Trunk B alarm, and 7-Segment Self-

Test Display

Drive LEDs Disk activity lamps on both drives

Fan LED 12 VDC power indicator lamp

Remote Reset Input Connector Shorting two pins forces a system RESET

Environmental

The operating environment must be free of corrosives or contaminants such as salt water or excessive dust. The

following environmental specifications should be met:

Temperature

Operating 0 to +40°C

Non-Operating -20 to 85°C

Humidity 20 to 90% noncondensing (except for removable diskette drive)

Storage Temperature -40 to +85°C

Operating Altitude < 15,000'

Shipping Altitude < 50,000'

Diagnostics

Error Detection Run-time errors logged in a file for viewing or printing

System Configuration Configuration files can be viewed from the VT100 terminal interface

using “config -f”

Controlled Shutdown System operator can produce a graceful system shutdown so that calls

in progress are completed

4.2. AUDIO MULTIPLEXER

4.2.1. T1 MUX Specifications

The NEC MUX will be used for T1 applications. Its specifications are as follows:

T1 - 23 B+D

Configured w/ 4...23 cards*

Mechanical Construction

19.2" x 19" x 12"

Weight

<59.6 lb

Power Requirements

Voltage -44 to -56V DC (-48V nominal)

Power Consumption 34W (0.7A)

Environmental Requirements

Temperature 4.4 to 38°C

Humidity 20 to 55% (without condensations)

*Must have card for each audio line

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Ericsson LBI-39001 Instrukcja Operatora Strona 31