Dräger Evita 4 - 7 Processor Board PCB (CO 2 Measurement); Power Supply to the Processor Board PCB; Connector Pin Assignment of the Processor Board PCB

5664.500/800 Evita 4/Evita 2 dura 06/98 Repair Instructions Page 46
For internal use only. Copyright reserved. GBR5664500T055664800.fm 18.03.99
Dräger Medizintechnik
D
7 Processor Board PCB (CO
2
measurement)
7.1 Power Supply to the Processor Board PCB
The Processor Board PCB is powered from the Power Supply PCB. The J4 connector of the
Processor Board PCB and the P4 connector of the Power Supply PCB are directly
interconnected. The power supply must be measured at the P4 connector of the Power
Supply PCB (see “Power Supply PCB”).
7.2 Connector Pin Assignment of the Processor Board PCB
J4
Pin Assignment Pin Assignment
1 +5 V 5
–15 V
2 +8.5 V 6 +15 V
3 DGND 7 on/off for +8.5 V
4 AGND 8 on/off for +15 V
J2 (Inputs/outputs for communication between the PCBs of the CO
2
measurement)
Pin Assignment Pin Assignment
1DGND of the CO
2
measurement 7 TTL-TXD (Evita)
2 RXD with RS232 level (PC) 8 TTL-RXD (Evita)
3 TXD with RS232 level (PC)
CAUTION
Electrostatic discharge can damage electronic components. Use an ESD
protection mat and a wrist strap when handling electronic modules.