ES601-US OPERATING MANUALOverview/Chapter 2 # Page 192.3 Interface LayoutREAR PANEL:1. POWER SWITCH: Two-position (toggle) rocker switch2. AC POWER INPUT (MAINS SUPPLY)20. FUSES (2): AGC 1A / 250VSIDE PANEL:3. RS-232 TESTER INTERFACES (6) for connection to external test instruments4. PRINTER INTERFACE PORT for connection of standard Centronics Printer5. RS-232 INTERFACE PORT provides RS-232 serial connection to serial printer or to COM Port of PC6. ETHERNET INTERFACE PORT provides communication with PC via ES601pc-US software7. USB INTERFACE PORT provides communication with PC via ES601pc-US software8. PS/2 INTERFACE for connection of PS/2 Keyboard or PS/2 Barcode Scanner9. CONTRAST ADJUSTMENT POTENTIOMETER (embedded)10. RS-232 BARCODE INTERFACE for connection of RS-232 Barcode Scanner11. FIRMWARE UPLOAD SWITCH (embedded) toggles between normal and firmware update modeFRONT PANEL:12. ECG/PATIENT LEADS - ten safety-style banana jacks for connectingECG and other patient leads13. Graphic LCD, 53 character x 30 lines, backlit, touch-screenTOP PANEL:14. Three safety-style banana jacks, which provide signal connections:RED – Kelvin Cable input for Ground Resistance TestBLACK – Kelvin Cable input for Ground Resistance TestGREEN – direct connection to ground pin of TEST RECEPTACLE15. AUX1 and AUX2 provide connection for special leakage tests16. TEST RECEPTACLE for Device Under Test (DUT)