Philips Medical Systems North America WMTS-MODULE M2638A 1.4GHz WMTS ITS RADIO MODULE User Manual CPY

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Document ID	827976
Application ID	SmCIGWeU9PqC0Xy4G9fIAA==
Document Description	USERS MANUAL
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	51.29kB (641171 bits)
Date Submitted	2007-08-10 00:00:00
Date Available	2007-08-13 00:00:00
Creation Date	2007-06-14 10:42:10
Document Lastmod	2007-06-14 10:42:10
Document Title	CPY Document

DOCUMENT NAME
Application Note:
Philips M2638A Instrument Telemetry Module
(1.4 GHz / Wireless Medical Telemetry Service ”WMTS")
DOCUMENT IDENTIFIER A-M4840»90130-B
Notice UNCONTROLLED IN PRINTED FORM UNLESS STAMPED IN RED
Document The document owner is listed below:
Ownership
Function Title
R&D Design Engineer
Printed Name Signatur [Date
Juan Brea g 2 g 6//3/0J7
Document The document approver(s) is/are listed below:
Approver(s)
Title Name (Printed) Signature/Date
Program Manager Melissa Holmes
5 I /3 g/mgw7
Rev Revision Description Date Originator
B Added Dual- and Tri—Band Antennas in addition to whip 12-June~2007 Juan Brea
A Release l4-March-2005 Juan Brea
Application Note: M2638A Instrument Telemetry Module
Document Number M4840-9OI30 Rev B Page 1 of6
1 Introduction
The Module is a serial network adapter designed to be used with specialized medical devices manufactured
by Philips Medical Systems (Figure 1). It enables the host medical device to wirelessly establish bi—
directional communication with other remote devices using the Philips’ WMTS infrastructure,
RF antenna
+5 Vdc
_ . 1Coaxial RF cable
Serial Data : , Radio Module l
Ground ¢__
Figure 1: Module Block Diagram
2 Host Interface
The Module interfaces to the host though a single U0 connector (Figure 2). Via this connector the host
supplies DC power, signal ground and modulating data to the radio Module. The communication between
the host device and the Module is a two wire asynchronous serial interface (Table 1).
an
2 4 e WMTSRadio
6 pin header AMP 7 438069-6
Figure 2: Module Interface Host Connector
Application Note: M2638A Instrument Telemetry Module
Document Number M4840-90130 Rev B Page 2 of6
Pin Name 1/0 Function
1 Ground First of two ground connections for the Module.
2 ITSfiTx OUT Serial data to host,
3 ITSfiRx TN Serial data from host.
4 Ground Second ofrwo ground connections for the Module.
5 +5 vdc + 5 vdc +/- 5%,
Sinks 35 mA avera c, 280 mA Peak durinv radio Tx/Rx
6 Not Connected
Table 1: Host Connector pin assignment
3 Serial Connection
Serial Specification:
The interface to the Host is a serial communication link (Table 2):
9 Flow Control:
9 Baud Rate:
9 Parity:
9 Bits:
9 Logic Levels:
Tx, Rx; no hardware flow control
1 15.2 kbaud;
No parity bit
8 bits of data, plus 1 Start/Stop bits
TTL levels, 5 volt tolerant.
Logical Zero Logical One Conditions
LOW HIGH
0.1 V max lOOuA sink
lTSiTx 0.55V max 24mA sink
2.9V min lOOuA load
2.3V min 24mA load
ITS Rx 0.6V max 2.2V min ~
Table 2: Serial Lines, Electrical DC Characteristics
Maximum User Data Rate:
The maximum user data rate that the radio supports is 12 kbits/second in each direction. This maximum
over the air data rate is fixed by design and cannot be modified by the user.
4 Module RF Shielding.
The Module contains all necessary RF shielding. The host device does not need to provide additional
shielding.
Application Note: M263 8A Instrument Telemetry Module
Document Number M4840—90130 Rev B
Page 3 of 6
5 Module Mounting Considerations.
The Module is selfecontained and can be mounted anywhere using the supplied threaded pem nuts. No
special heat sinking considerations are required. There are no orientation constraints.
6 RFInput/Output,Antenna
The Module is only approved for use with the antennas specified by Philips, listed here:
1. Dipole Whip Philips Part Number M4842»61300
2. Tri-Band Philips Part Number M3002-66493
3, Dual-Band Philips Part Number M8100»66490
These antennas cannot be replaced with antennas of a different type. However, antennas of equivalent type
with equal or lower gain to the listed antennas can be used. The RF input and output of the Module is
matched to 50 ohms. A coaxial cable brings the RF outside the metal enclosure. This cable uses a unique
non standard connector manufactured by JST (JST part number AYUl-lS-12676-221). For the dipole whip,
the coaxial cable connects to a JST-to»reversed-TNC adapter made by Amphenol (Amphenol part number
03l»6101)where the antenna plugs in.
7 RF Transmitter Specifications
The following table summarizes general transmitter specifications (Table 3). For complete details
(including details on the receiver section) refer to ES-M4840—90108:
1. Frequency ranges: Bands: 1395 - 1400 MHZ and 1427 - 1432 MHZ
2, RF Output Power 8 dBm +2/—3dB, 6.3 mW (3.2 mW to 10 mW), into Antenna load.
Calibrated into 50 ohms.
3. RF Output Power control a) Transmitter chain gain shall be calibrated at time of
manufacture (env temp 25+/-5deg.C).
b) Over power algorithm deployed to prevent excess power
and also includes temperature compensation.
4. Transceiver frequency accuracy +/—15KHZ relative to channel frequency, includes
temperature compensation & aging effects.
5. Reference Frequency Calibration <42pm
6. Modulation type FSK with Root Raised Cosine filtering (1M60Q7D)
Table 3: Module, Transmitter Specifications
8 Fault Conditions
Over/ Under Voltage
The input voltage from the DC power source to the Module must remain between the values specified in
Table 1. Operating the radio Module from a voltage lower source lower than 4.75 vdc or higher than 5.25
vdc can cause the regulator section to shut down ceasing operation of the Module.
Application Note: M2638A Instrument Telemetry Module
Document Number M4840-90130 Rev B Page 4 of6
Excessive Signal Level on Serial Input
The data input signal levels must be observed as specified in Table 2. Driving the input data line over 5
vdc can cause damage to the Module input buffers, causing interruption of data transfer,
Excessive Data Rate an Serial Input
The host serial communication data rate is fixed at 115.2 kbaud. Clocking data at different baud rates will
result in incorrect data transfer. The maximum host/user over the RF link data rate is 12 kbps. Attempting
to send data at a faster rate will result in data buffer overrun and data loss,
9 Accompanying Documentation for products incorporating the
Module
Products which incorporate this device will be labeled “Contains FCC ID: PQC-WMTS-MODULE”, and
their accompanying documentation should prominently display the following:
OPERATION OF THIS EQUIPMENT REQUIRES THE PRIOR COORDINATION WITH A
FREQUENCY COORDINATOR DESIGNATED BY THE FCC FOR THE WIRELESS MEDICAL
TELEMETRY SERVICE, THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES.
OPERATION IS SUBJECT TO THE CONDITION THAT THIS DEVICE DOES NOT CAUSE
HARMFUL INTERFERENCE
Application Note: M2638A Instrument Telemetry Module
Document Number M4840-90130 Rev B Page 5 016
10 Radio Specifications
1. Frequency ranges:
Bands: 1395 - 1400 MHZ and 1427 - 1432 MHZ
Channel Spacing: 1.6 MHZ, see table below
. RF Output Power (into 50 ohms)
3 dBm +z/73 dB (32 tho 10 mW)
3. Frequency accuracy
(relative to channel frequency
+/-15 kHz, includes temperature compensation &
a ing effects.
4. Modulation type
FSK with Root Raised Cosine filtering (1 M60Q7D)
5. Modulation deviation (relative to channel
frequency)
Bit 11+288 kHz +/-25 kHz
Bit O: 488 kHz +/-25 kHZ
6. Transmitter output broadband noise
< -58.9 dBm in 1 MHZ band, outside channel in use.
7. Out of band spurious emission levels:
S1394MHZ, 21401 MHZ
51426MHZ, Z 1433 MHZ
< -41dBm in 1 MHZ bandwidth for FCC limit
8. Channel Occupied Bandwidth
(as defined by power in 99% BW per
FCC 47CFR Ch. 1 Subpart 2.202)
S +/— 800 KHZ
WMTS Channel Frequencies in the 1395 — 1400 MHZ Band
Lower band edge 1395.0000 MHZ
Channel 1 1395.8977 MHZ
Channel 2 1397.4970 MHZ
Channel 3 13990963 MHZ
Upper Band Edge 1400.0000 MHZ
Channel Spacing 1.6 MHZ
WMTS Channel Frequencies in the 1427 —1432 MHZ Band
Lower band ed e 1427.0000 MHZ
Channel 4 14278979 MHZ
Channel 43 (H) 14302410 MHZ
Channel 5 (*)
1429.4972 MHZ
Channel 6 (*)
1431.0965 MHZ
Upper Band Edge
1432.0000 MHZ
Note: (”‘) Not available in special geographic areas, i.e. “Carve-Out Areas"
(**) Available in special geographic areas only, i.e. “Carve-Out Areas”
Application Note: M2638A Instrument Telemetry Module
Document Number M4840-90130 Rev B
Page 6 of 6

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