Service manual

Sub-rack, power supply and environmental aspects

Introduction

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Sub-rack, power supply and environmental aspects

Design The S

TELLAR

is a 1 U unit to be mounted in a standard 19" rack. All connections to

and from the sub-racks are made at the rear panel with the exception of the local con-

trol connector which is accessible from the front. You connect a PC to the local con-

trol connector. From the PC you set up and configure the S

TELLAR

The STELLAR

exists in two versions: A version with front panel display and a version

which must be controlled from the ROSA user interface.

Power supply There are two power supplies for the S

TELLAR

:ADC(-36to-75VDC)oranAC

(from 100 V to 240 V AC) supply.

EMC The S

TELLAR

is EMC compliant according to EN 55 022, EN 55 024, E N61000-3-2

and EN 61000-3-3.

Ventilation The thermal design is based on cooling by passive air circulation. Multiple sub-racks

are mounted with 1 U air-separation plates as separators.

For further information on how to mount air separation plates, see Installing the Stel-

lar, p. 16.