GE S5 Owners Manual

							Frame for FM 9
Document no. M1187335-004
Connectors
Interconnection board connector X3
Flat panel connector X7 (to display connection board)
Speaker connector X17
Analog output board connector  X4 (to sync connector board)
Ethernet connector X20 (network  cable to network connector board)
System watchdog and voltage supervision
There are two voltage supervision chips that control the system reset signals. 
The +3.3V supervision chip outputs reset signal s for +3.3V devices. Reset is activated when 
voltage is below 3.08V. It also has a watchdog that is refreshed in normal operation and in 
standby.
The +5V supervision chip outputs reset signals fo r +5V devices. Reset is activated when voltage 
is below 4.63V. +5V reset causes  also +3.3V reset through a FET.
2.1.4 DC/DC board
The DC/DC board converts the output voltage of AC/DC unit, external DC unit (External DC 
power for future use) or battery voltage to va rious supply voltages for the electronics of FM 
monitor. The DC/DC board takes care of the battery charging.
Figure 5 DC/DC Board
DC/DC board functional blocks
DC/DC board operation is controlled by the PM C (Power Management Controller) CPU. PMC 
takes care of power path controlling and power supplies sequen cing. It communicates with 
the main CPU via serial communication. PMC also measures DC/DC board voltages and 
currents. 
High efficiency switching power supplies and  power path switches are used on the DC/DC 
board. This is because of no-fan requirement fo r FM monitor as well as maximizing the battery 
time. 
Circuit breakers make VSYS and MOD voltages short-circuit protected. Also the battery charger, 
+5V and +3.3V switchers withstand short-circui t. +5V_OUT is disconnected from +5V by a 
circuit breaker in case of +5V_OUT overload.  
						

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Document no. M1187335-004
The boost converter can be set to two different output levels. The higher one is used to give the 
battery charger adequate input voltage when the DC/DC board input comes from an external 
DC source. The lower one is set in AC/DC use to keep the boost converter enabled but passed 
by a diode and thus not switching, which minimizes the power loss. When the AC/DC voltage 
drops, the boost converter starts regulating its output and keeps the MOD voltages at a level a 
little lower than the one in AC/DC use. In battery  use, the lower output voltage yields a little 
better efficiency, too.
Smart batteries, battery charger and PMC communicate via SMBus (System Management Bus). 
It is a two-wire interface closely resembling I2C. Smart battery controls the charging and 
calculates and stores the capacity information as well as other battery related data. Batteries 
can be charged when external DC or AC/DC voltage is present. 
Block diagram of the power supplies is represented in  Figure 6.
Figure 6 DC/DC board block diagram
AC / DC
15.9V
+/-2%
SMART
BATTERY
CHARGER
(BUCK)
POWERPATH
SWITCH
3.3V
BUCK
 14.6V /
15.4V
2-LEVEL BOOST
 5V
BUCK
DC/DC BOARD FUNCTIONAL BLOCKS
VBOOST  14.1 - 16V
VSYS  9 - 16.2V
5V_PMC
PMC CPU
&
ON/STBY LOGIC
SET_HI
2x BATTERY10.8V Li-ION
(9-12.6V)
Boost converter
15.4V (set_hi)
14.6V
passed by diodePower source
@  EXTDC
@  Battery
@  AC/DC
CIRCUIT
BREAKER
=  DC/DC-
BOARD
EXTERNAL
DC
10 - 16.5VSMART
BATTERIES
CIRCUIT
BREAKER
+3.3V+5VVSYS_OUT 9 -16.2VI/O_VMOD13.8- 16VVMOD
13.8 -16VSERIAL COMM.
&
ON/STBY CTRL
POWER PATH
SWITCH
 CIRCUIT
BREAKER
+5V_OU
T
dcdc_brd_block.vsd 
						

							Frame for FM 11
Document no. M1187335-004
Battery charger
Battery charger is a Level 2 Smart Battery Charger. It communicates with the batteries and 
PMC CPU via SMBus interface. The charger acts as an SMBus slave device that responds to 
charging current and charging voltage values sent to it by a Smart Battery. 
The charger includes an input current limiting feature. In a case where the input current 
exceeds the limit, the charger reduces the output  current to keep the input within the limit. The 
currents of the MOD voltages (VMOD, I/O_VMOD) are taken through this current measurement 
as well. This results that the charger reduces its output current if the sum of the charger input 
current and MOD currents exceeds the input limit. The purpose of this is to prevent the input 
power sources from getting overloaded if  MOD power is increased during charging. 
Power path switching electronics
The power source to be used (batteries, external DC or AC/DC output) is chosen initially by a 
‘power path controller’ inside this block. The PMC CPU has full control over the power path 
management after the initial choice is made at startup. 
2.1.5 AC/DC unit 
Figure 7 AC/DC unit
AD/DC unit
The AC/DC unit is a compact medical power supp ly based on high-efficiency technology. It is 
designed for 65 watt continuous output power, universal AC input and 15.9V output voltage.
Because FM is convection cooled , AC/DC unit’s output is not loaded with full rated power to 
reduce heat dissipation. 
						

							Datex-Ohmeda S/5 FM
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Document no. M1187335-004
2.1.6 Module bus cable unit
Figure 8 Module bus cable unit
Interconnection Board connector 
Module bus connector (pins 21…25)
CPU board connector
DIS connector X4
Sync IABP & DEF connector 
2 pcs grounding wires 
2.1.7 Interconnection board
 
Figure 9 Interconnection board
Interconnection board takes care of most of the monitor internal cabling.
CPU board connector X2
Module bus flex board connector X6
Fuse for External DC input (for future use)
DC/DC board connector X8
Backlight inverter connector X9
Multi I/O connector X5
Battery 1 connector X3 
						

							Frame for FM 13
Document no. M1187335-004
Battery 2 connector X4
User interface board connector X1
2.1.8 Display connection board
Figure 10 Display connection board
CPU board connector X1
Display connector X2
2.1.9 Front cover parts
Figure 11 Parts inside Front cover 
(1)  Alarm light board
(2)  Alarm indicator board
(3)  Indicator ribbon cable
(4)  User interface board
(5)  Power indicator board
5
1
2
3
4 
						

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Document no. M1187335-004
2.1.10 Wireless LAN option, F-FMW 
Datex-Ohmeda Wireless Network is an extension to, or an alternative for, a wired Datex-
Ohmeda Monitor network. It provides same network services than the wired Datex-Ohmeda 
Network.
The monitor network is a local area network based on standard Ethernet technology. The 
monitor network is formed by connecting one Central and up to 32 bedside monitors together. 
The Central and the bedside monitors are connected to a 10 Mbps hub. The hub works as a 
multiport repeater and controls the information  flow between all the devices connected to the 
monitor network. 
The communication protocol for the moni tor network is Datex-Ohmeda specific.
Wireless bedside monitors can use both the wired  and wireless network. If the network cable is 
connected, the wired Datex-Ohmeda Network is used.
Network connection is changed automatically  between LAN and WLAN. LAN overrides when 
available. 
For using Wireless LAN connection, the monitor frame with ready-fitted WLAN option F-FMW is 
required.
For configured parameters please refer to  the Datex-Ohmeda Network, Wireless LAN 
Installation Guide.
2.1.11 Batteries
The S/5 FM has two lithium-ion batteries, located in the battery compartment. The DC/DC 
board connects one of the batteries to be the po wer source, if no power is received from the 
AC/DC unit or from an external DC unit (External DC power for future use). The battery charging 
is controlled by the DC/DC board. 
The batteries can be charged separately, and screen symbols and monitor frame LED 
indicators indicate their chargi ng level and possible failure. 
NOTE: When the monitor is battery powered, the green battery LED is on. When the monitor is 
mains/external DC powered, the green mains/external DC LED is on. 
						

							Frame for FM 15
Document no. M1187335-004
2.2 Connectors and signals
2.2.1 External connectors
Figure 12 External connectors of Frame for FM
(1) Fuses
(2) Potential equalization connector
X1     NET connector
X2     Multi IO connector
X3     Receptacle for power cord
X4     Module Connector for E-PSM,  E-PSMP or N-FMC, N-FMCREC, N-FMREC
X5     Defib & IABP sync connector
X6     Connector for DIS interfacing system 
X7     Connector for Remote Controller K-CREMCO
X8     NET ID connector
X9     Serial connector
X5
X6
X4X3
X1 X7 X8 X9
X2
1
2 
						

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Document no. M1187335-004
 Network connector, X1
Multi I/O connector X2
  
RJ45 connectorPinSignal
1
2
3
4
5
6
7
8 Tx +
Tx -
Rx +
N/C
N/C
Rx -
N/C
N/C
25 pin female connector Pin
Signal
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25 GND 
NET_ID_DO, TTL out
NET_ID_DI, TTL input
NET_ID_CLK, TTL out
NET_ID_CS, TTL out 
TXD, RS-232 output
RXD, RS-232 input
NURSE_CALL, CMOS output
reserved
Data -, RS-485 I/O
CONNECTOR_ID, TTL input 
EXTDC+, 10-16V, inpu
t (for future use)
GND 
GND 
KB_DATA#, TTL, I/OPin 
KB_CLK#, TTL, I/O
+5V_OUT, +5V, output
CTS#, RS-232 input
RTS#, RS-232 output
REMOTE_ON#
reserved
Data +, RS-485 I/O
I/O_VMOD, 13.8 - 16V
EXTDC+, 10-16V, inpu t (for future use)
GND
123 456
78
131
14
25 
						

							Frame for FM 17
Document no. M1187335-004
Multi I/O adapter
Figure 13 Multi I/O adapter 
Connector for K-CREMCO X 7  
Net ID connector X8
Serial port X9  
5 pin connector PinSignal
1
2
3
4
5 KB_CLK
KB_DATA 
not in use
GND
+4.75 - +5.25V
9 pin female connector Pin Signal
1
2
3
4
5
6
7
8
9 NET_ID_CS, TTL out.
NET_ID_CLK, TTL out.
NET_ID_DO, TTL out.
NET_ID_DI, TTL input
GND
+4.75 . . . +5.25V
Not in use
NURSE_CALL, CMOS output
GND for Network ID
9 pin male connector Pin Signal
1
2
3
4
5
6
7
8
9 GND
RXD, RS-232 input
TXD, RS-232 output
+4.75 . . . +5.25V
GND
N/C
RTS#, RS-232 output
CTS#, RS-232 input
N/C
1
5
6
9 
						

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Document no. M1187335-004
Main power X3
Module connector X4
Defib & IABP sync connector X5
DIRECT_ECG: Output signal follows first user lead (ECG1 lead) including augmented leads. If 
pace is on, there is an enhanced pacer pulse  (5 volts at 2 milliseconds) when pacemaker 
triggering is detected.
In the event of a LEAD FAIL, refer to the following: 
Lead Failed ECG Analog Out
Right arm III
Left arm II
Left leg I
Chest II
On LEADS OFF situation ECG analog output is flat line (0V).
In 5-lead mode, the chest lead must be labe led V1, otherwise output will follow lead II. 
PRESSURE_OUT: The pressure labeled ART is sent to  the analog out. If no pressure is labeled 
ART, P1 is sent to the analog out. Output is se t to flat line (0V) if the pressure channel is not 
zeroed. Mains connector Pin Signal
L
PE
NLive
Protected earth
Neutral
5 pin connector Pin Signal 1
2
3
4
5GND
Vmod 13.8 - 16 V
Data +
Data -
Shield
Female mini din7 connector Pin Signal 1
2
3
5
6
7
8Defib sync
Marker_in
Analog GND
Digital GND
Reserved
Pressure_out
Direct_ECG