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FLD-496SA 

6  

A00474-1A

be lost and will be available if needed in 
the future. 

Disabling the detector will prevent stray 
noise from getting into the system. The 
Jumper is only used on the FLD 496SA-2 
and not the –1 version. 

MAINTENANCE 

The FLD-496SA does not require any 
normal routine maintenance. The only 
adjustment inside the FLD-496SA is for 
Transmit level, which set for 0 dBm at 
the factory. 
If the Battery indicator is out, and the 

Battery Switch is ON, the Battery should 
be replaced. The Battery being used is a 
lithium 9 Volt battery. An Alkaline battery 
can be used but the back-up time will be 
shorter. We supply an ULTRALEFE 
U9VL-BP with the modem. A tie-wrap 
can be used to secure the battery and 
holder to the board. 

You should never touch the ends of the 
fiber optic cables. Dirt and dust can 
render the cable useless. If the cables 
need to be cleaned, use reagent grade 
isopropyl alcohol and/or dry compressed 
air. 

Summary of Contents for FLD-496SA

Page 1: ...A00474 1A 1 MODEL FLD 496SA 9600 Baud FIBER OPTIC FSK MODEM GDI COMMUNICATIONS LLC 280 Interstate 80 Exit 1 PO Box 1330 Verdi NV 89439 Phone 775 345 8000 Fax 775 345 8010 ...

Page 2: ......

Page 3: ...ustody hereof and agrees not to disclose this data or any portion of this data to any unauthorized person without the prior written consent of GDI Communications LLC Recipient further agrees not to incorporate these drawings specifications or technical information in whole or in part in any other product or endeavor THIS LEGEND SHALL BE INCLUDED ON ANY REPRODUCTION OF THIS DOCUMENT ...

Page 4: ...A00474 1A FLD 496SA 2 TABLE OF CONTENTS DESCRIPTION 3 SPECIFICATIONS 4 INSTALLATION 4 MAINTENANCE 6 CONNECTION DIAGRAM 7 ...

Page 5: ...ds on the power level of the Emitter being used Power ranges of 21 to 13 dBm are available The FLD 496SA has two modes of operation as a Master and as a Remote In the Master Mode data from the FSK section is transmitted to both Emitters of the Fiber Optic section Data from the two Detectors is ORed together and sent to the FSK section In the Remote Mode of operation data coming in on Detector 1 is...

Page 6: ...6 D x 1 6 H FIBER SECTION 850 nm 62 5 125 cable Emitter output 7 to 16 dBm Receiver sensitivity 40 dBm max Power budget 15 dBm Typ 1300 nm 8 3 Cable Emitter output 21 to 13 dBm Receiver sensitivity 33dBm Power Budget 12 to 20 dBm INSTALLATION The FLD 496SA is very easy to use and install in a system The only connector on the rear panel is the FSK connector The 4 pins of the connector are labeled f...

Page 7: ...n them and this is sent down stream to the Remote or Local controllers Detector 1 and Detector 2 receive data from the Local or Remote controllers One set EMT1 DET1 or EMT2 DET2 can be left unused In the Remote Mode of operation data coming down stream from the Master goes in DET1 and is regenerated and sent out EMT2 EMT2 of the first Remote is then connected to the next Remote Modem DET1 in line ...

Page 8: ...which set for 0 dBm at the factory If the Battery indicator is out and the Battery Switch is ON the Battery should be replaced The Battery being used is a lithium 9 Volt battery An Alkaline battery can be used but the back up time will be shorter We supply an ULTRALEFE U9VL BP with the modem A tie wrap can be used to secure the battery and holder to the board You should never touch the ends of the...

Page 9: ...FLD 496SA 7 A00474 1A ...

Page 10: ... ...

Page 11: ...GDI Communications L L C TRAFFIC ELECTRONICS MANUFACTURER SPECIALIZING IN COMMUNICATIONS 280 1 80 WEST EXIT 1 P O B O X 1 3 3 0 V E R D I N E V A D A 8 9 4 3 9 TELEPHONE 775 345 8000 FAX 775 345 8010 ...

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