System Interfaces; Fetal Monitor Interface - Philips Avalon CTS M2720A Service Manual

The Avalon CTS has two system interfaces:

• Fetal monitor interface

• Service Interface
Fetal Monitor Interface
The Fetal Monitor Interface on the base station allows digital and analog outputs to the Series 50 fetal
monitors and Avalon family of fetal monitors with Rel. D.00.00 software or greater. The interface is enhanced
to support additional transducer combinations for future fetal monitors.
The following table lists the signals at each pin.
Pin
1
2
3
4
5
6
7
8
9
10
PIN 13
PIN 25
Signal Details
MECG supported (Series 50 B/C and Avalon fetal monitors
only).
internal resistance
+3V RF (10 k
internal resistance
+12V RF (10 k
internal resistance
+48V RF (100 k
Base station on (L).
Reserved.
DECG inop (L).
DECG Mode (L).
Reserved for future functionality.
US Mode (L).

System Interfaces

3
PIN 1
PIN 14
3
23