Philips Fm2 Service Manual

Mechanical Description
Chapter 1 - General Information
9
with the monitor, please see “Parallel I/O Communications Interface” on 
page 18. 
For further details of the pinouts and the cable specifications, see 
Chapter 2,“System Interfaces”.
Keypad and Navigation Wheel
There are seven front-panel switches, two LEDs, and one wheel push-button 
switch. All of these buttons go to the main-board except for the ON/OFF push 
button, which goes directly to the power supply. The software monitors these 
signals...

Measurements Channels
10Chapter 1 - General Information
Measurements Channels
Ultrasound Channel
The monitor has two ultrasound sockets, US 1 and US 2, located on the side 
panel of the monitor. Either one or two M1356A ultrasound transducers can be 
connected. The latter case allows twins monitoring. (Refer to the 
Instructions for 
Use
 for transducer specifications). 
The transmitter pulsing the ultrasound transducer is gated by control circuitry, 
and return signals are processed in the CODEC...

Routine Maintenance and Cleaning
Chapter 1 - General Information
11
Routine Maintenance and Cleaning
For detailed instructions on how to clean the monitor and the monitoring 
accessories, see the 
Instructions for Use.
For instructions on cleaning the Recorder, refer to the 
Instructions for Use. 

Routine Maintenance and Cleaning
12Chapter 1 - General Information 

Chapter 2 - System Interfaces13
2
System Interfaces
Overview
The monitor has the following system interfaces:
Serial I/O interface 
Parallel I/O interface 
Note—The serial and parallel interfaces are not electrically isolated against 
each other.
Serial I/O Communications Interface
The RS-232 interface is totally isolated from the interface board through the use 
of high-speed optical isolators and isolated 5-volt power supply.
The RS-232 communications interface port is for communicating with:
a...

Supported Modems
14Chapter 2 - System Interfaces
The pinouts for the DB9 connector are shown in the following table. 
The cable (M1380-61624) is a 3 meter long, fully wired RS-232 Null-modem 
cable supplied with the viewer software. It is also available as an OB 
TraceVue 
option.
Supported Modems 
Note—As modems are not designed to fulfil the electrical requirements of a 
medical device in terms of leakage current and isolation, a modem must be 
located outside of the patient vicinity.
The following...

Supported Modems
Chapter 2 - System Interfaces
15
a MultiTech Systems MT-5600ZDX desktop modem 
a Nokia 6210GSM cellular phone modem (GSM type) 
MultiTech Systems MT-5600ZDX
Modem
Default
Initialization
StringThe monitor sends the following default modem initialization string:
‘ATE0X4&K0\r’
This is the first string sent by the monitor, and it is not customizable, nor is it 
obvious to the user.
The monitor expects to see an “OK” come back from the modem after the 
initialization string has been sent....

Supported Modems
16Chapter 2 - System Interfaces
The components of the default initialization string are explained in the 
following table.
For detailed information about the MultiTech Systems MT-5600ZDX and how 
to set it, please refer to the modem’s Owner’s Manual. Table 2 MultiTech MT-5600ZDX initialization string 
commands
CommandExplanation
E0 Switches to verbose mode. To establish whether a modem 
connection is effective, the modem replies to the signal sent 
by the monitor with an ‘OK’ signal, or...

Supported Modems
Chapter 2 - System Interfaces
17
The commands above are only applicable to Rockwell/Conexant-based 
MultiTech Systems modems. At the time of printing, the MultiTech MT-
5600ZDX is the only desktop modem that has been validated for use with the 
monitor.
The monitor may also work with other modems, but this has not been tested, 
and consequently no other modems are officially supported.
Customers may use any other modem after successful verification of several trace 
transmissions.
Nokia...

Parallel I/O Communications Interface
18Chapter 2 - System Interfaces
Parallel I/O Communications Interface
Caution
General-purpose personal computers and modems are not designed to 
meet the electrical safety requirements of medical devices. The RS-232 and 
parallel connectors on the monitor are electrically isolated to permit safe 
connections to non-medical devices, which should be connected with a 
cable of sufficient length to prevent the non-medical equipment from 
contacting the patient.
If a...