GE Medical Systems Information Technologies 340T User Manual

© Copyright Wood & Douglas Ltd 1998

version: 1.0

issue: November 1998

ST500

TRANSMITTER

TECHNICAL MANUAL

(1891 1210)

LATTICE HOUSE

BAUGHURST ROAD

TADLEY

HAMPSHIRE

UK RG26 5LP

Tel: [phone] Fax:[phone]

Contents

Section 1

An overview .................................................5

1.1 GENERAL DESCRIPTION ...................................6

Section 2

Operation ...................................................7

2.1 USER CONNECTIONS ......................................7

Section 3

Technical description .........................................9

3.1 POWER SUPPLY ..........................................9

3.2 INPUT INTERFACE .........................................9

3.3 MODULATION STAGE ......................................9

3.4 RADIO FREQUENCY STAGE ................................10

3.5 FREQUENCY PROGRAMMING ..............................14

Section 4

Technical specifications ......................................19

DRAWINGS

WS1494/XX7 GENERAL ARRANGEMENT FOR ST500
WD1632/001 CIRCUIT DIAGRAM FOR ST500
WD1632/XX2 COMPONENT OVERLAY FOR ST500 (Sheet 1 of 3)
WD1632/XX2 COMPONENT OVERLAY FOR ST500 (Sheet 2 of 3)
WD1632/XX2 COMPONENT OVERLAY FOR ST500 (Sheet 3 of 3)
C WD632 00 ITEM LIST FOR LEADED COMPONENTS FOR ST500
A SM1632 00 ITEM LIST FOR SURFACE MOUNT COMPONENTS FOR
ST500

1.0/November 1998 1891 1210

1891 1210 1.0/November 1998

Section 1

An overview

Wood & Douglas are an independent UK company dedicated to the design and
manufacture of high quality RF designs for the telemetry, security, broadcast and video
markets world-wide.

The information given in this manual is Copyright Wood & Douglas and is provided to
the original purchaser for the purposes of operation and routine maintenance. The
contents of this manual must not be disclosed to any third party, nor may the purchaser
make additional copies of the manual or store the information given on any electronic
retrieval or mass storage system.

The company reserves the right to amend or change specifications of its products
without prior notice in accordance with the company policy of continued product
improvement.

5

NOTE:

This device complies with Part 15 of the FCC Rules.

Operation is subject to the condition that this device does not cause harmful

interference.

The unit is labelled with a serial number label as shown below:

ST500 31 980912345
FCC ID ABCST500 CECE

where: 990912345 is the serial number of the unit containing the date code for

September 1998
ABC is the Wood & Douglas Ltd FCC code

1.0/November 1998 1891 1210

6

1.1 GENERAL DESCRIPTION
The ST500 can be configured for analogue or digital operation and is available in the

frequency range of 405 - 470MHz with a 12.5kHz channel spacing.
The transmitter requires a nominal 12 volt DC supply connected via PL7. However

the unit will function correctly within the limits of +6.0V to +14.0V. The output power
of the transmitter is normally preset to 100mW nominal.

The ST500 is intended to fit into OEM equipment housing by means of the three
connectors which protrude through the base of the unit.

1891 1210 1.0/November 1998