This manual contains information, illustrations, and technical data that pertain to the operation of model PCT-FTX3R,
CATV 1310nm DFB fiber optic transmitter. Pursuant to sections of Title 21, United States Code of Federal Regulation
(CFR), Chapter I, Subchapter J, and administered by the Center for Devices and Radiological Health (CD RH),
operating under the Food and Drug Administration (FDA), this product which produces or receives an optical signal
composed of laser radiation, complies with 21 CFR Chapter I, Subchapter J, as applicable to Class I laser products.
DANGER - AVOID DIRECT EXPOSURE TO THE LASER BEAM AT ALL TIMES. Invisible
radiation continues when open or when operating with fiber optic cable disconnected. Never operate
!
!
unit with a broken fiber or with a disconnected and/or unterminated fiber connector.
CAUTION -There are no user-serviceable parts inside the unit. Refer all servicing to qualified service
personnel. Make no attempt to modify or alter any circuit or component assembly, other than those
measurements, adjustments, and tests specified in this manual. Unauthorized modifications to this unit
will result in nullification of warranty coverage.
STATEMENT OF WARRANTY
PCT-International, Inc. warrants this product to be free of defects in workmanship, materials, and
manufacture for a period of one (1) year from date of purchase. Further, PCT-International, Inc. will repair
and/or replace this product or its components that have been proven defective during the warranted period
of one (1) year. This warranty shall not apply to product(s) which has had the factory seal broken, or has
been subjected to misuse, neglect, accidental damage, incorrect wiring, improper installation, or use in
violation of authorized instructions. Removal of the product's nameplate, bearing model number and serial
number, shall also void this warranty coverage. Warranty shall not be enlarged, diminished, or affected by,
nor shall further obligation or liability arise from PCT-International, Inc.'s rendering of technical advice or
service in connection with the purchaser's order for this product.
CONTENTS
Index
Page 3
SUBJECT
PACKING LIST, RECEIVING PROCEDURE
PRODUCT DESCRIPTION: Overview, Features, Graphics
SPECIFICATIONS: Data Tables
FUNCTION ANALYSIS: Block Diagram
INSTALLATION: Transmitter Installation
TRANSMITTER OPERATIONS: Transmitter Start-Up
COMMUNICATION MONITORING: RS232 / RS485 Protocols
B-TYPE COMMAND RESPONSES
C-TYPE COMMAND RESPONSES
D-TYPE COMMAND RESPONSES
MAINTENANCE AND TROUBLESHOOTING: Troubleshooting
USER’S NOTES
LCD Display And Functions
Command Types
Pin Definitions
PAGE
3
4
5
6
7
8
9 - 10
11
11
11
12
13
13
14
15
PACKING LIST AND RECEIVING PROCEDURE
No Item Amount
Packing List
Receiving Procedure
On receiving the transmitter, perform the following pre-setup procedure:
1 Transmitter 1RU Unit 1
2 Laser Key 1
3 Power Cord 1
4 User Manual 1
1.
Inspect the shipping carton for any visible damage.
2.
Inspect the product unit for damage.
3.
Check for missing accessories.
If damage has been incurred, immediately
4.
contact PCT-International, Inc., Customer
Services, for remedial action.
PRODUCT DESCRIPTION
Overview
The PCT-FTX3R series is a standard rack-mounted, AM modulated, DFB (Distributed Feedback), laser
diode based, high linear CATV 1310nm fiber optic transmitter. With independent channel design, this
product is suitable for PAL, NTSC, or SECAM television signal transmissions. Its flexible bandwidth design
provides up to 110-channel NTSC capability, along with a miniaturized circuit format that improves stability
and service life.
Features
T 19” Standard 1U Rack Design
T High Performance, Cooled DFB Laser Diode
T 45 ~ 870 MHz Bandwidth
T Automatic / Manual Controls (AGC / MGC)
T LCD Display / Control Functions
T LED Status Indicator Lights
Optical Output Power 4 ~ 20 mW
T
Page 4
Transmitter Graphic
Power ON Light
Laser Key Switch
RF InputRS-232 / RS-485Receptacle
Fiber Optic Port
Alarm Light
Cooling Fan
FRONT PANEL VIEW
LCD Display
REAR PANEL VIEW
Monitor
UP Button
Nameplate
Down Button
Select Button
Unit ON / OFF
RF Test Port
SPECIFICATIONS
Data Tables
1.1 Optical Wavelength 1310±20 nm
1.2 Optical Output Power 4 ~ 20 mW
2.1 RF Input Return Loss ³16 dB
2.2 RF Flatness £1.5dB
2.3 AGC±5dB RF Variation dB
3.1 LCD 2 x16 characters
3.2 RF Monitor Point Value -20 dB
3.3 RF Monitor Point Accuracy ±1 dB
1. Optical Performance
Item Spec. Unit
2. RF Performance ( 45 ~ 870MHz )
Item Spec. Unit
3. Monitor Port Performance
Item Spec. Unit
£1.0
Page 5
4. RF Link Performance ( NTSC – 79 Channels )
Item Spec. Unit
4.1 RF input range 20±5 dBmV/ch
4.2 CNR ³51.0 dB
4.3 CSO ³63.0 dB
4.4 CTB ³67.0 dB
4.5 XMOD ³65.0 dB
Test Condition: Room temperature: 25 C. Optical Link: fiber 10km + attenuator.
Receiver Input Power: -1 dBm.
0
5. Electrical/Environmental/Physical
Item
5.1
5.2
5.3
5.4
5.5
5.6
5.7
Power: 90 VAC to 260 VAC @ 50/60Hz
Control Interface: RS-232 and RS-485
Operating Temperature: 0 C to 50 C
Storage Temperature: -20 C to 70 C
Humidity: Max 85% non-condensing
Dimensions: 483 W x 44 H x 392 D (mm)
Weight: 4.8kg
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