Schiller AT-1 - Physical Overview

SCHILLER AT-I 3-Channei ECG Unit
SERVICE WD30OK Issue 3 September 1999
Chuprer 4
Module Removal and Replacement
Physical Overview
The AT-1 unit is enclosed in a two part medical standard. moulded plastic case.
The top part contains the keyboard with the base section containing all the elecmnics of the unit.
the thermal pnnter, the paper tray, the battery and mains transformer.
The electronics of the unit are contained on two printed circuit boards (control and power supply
boardMK 11-1,andtheECGinterface boardm 11-2).TheECGAmplifierboardMR 11-2also
supports the patient connector. The PCBs are secured on spacers moulded in the base section.
The
battery is secured in position with double sided tape and the mains transformer is secured on
spacers.
Thethe~pnnterismountedonapapernay/thermalprinterassembly whichissecuredinthe base
section complete.
Because
of the plastic construction of the case, threaded metal inserts are used throughout for all
screw fuirlgs.
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