Related Manuals for JW Fishers SFP-1
Summary of Contents for JW Fishers SFP-1
- Page 1 SFP-1 and MFP-1 PINGER OPERATION MANUAL JW FISHERS MFG INC 1953 COUNTY ST. E. TAUNTON, MA 02718 USA (508) 822-7330; (800) 822-4744; FAX (508) 880-8949 Email: info@jwfishers.com WEB: www.jwfishers.com...
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Page 2: Options
All repairs Extended operating life (longer housing for extra batteries). are made at our factory. Repairs by unauthorized persons may void Different frequencies available for SFP-1 (specify at time of order). the warranty. Carrying case (holds two pingers). -
Page 3: Table Of Contents
TABLE OF CONTENTS Specifications ................i Options ..................i Cautions ..................1 Introduction ................. 2 Distance/Range ................3 Theory of Operation ..............4 Single Frequency Pinger Jumper Layout ........6 Multifrequency Pinger Jumper Layout ......... 7 Multifrequency Pinger Frequency Switch ........8 Operation .................. -
Page 4: Cautions
Battery Layout CAUTIONS: Standard Housing Extended Operations Option Transducer Transducer Do not allow the Pinger to be exposed to excessive heat by leav- ing it in direct sunlight or inside of a closed vehicle on a hot day. Excessive heat can damage the electronics and/or destroy the wa- Retaining Retaining terproof seals. -
Page 5: Introduction
BATTERY INSTALLATION The SFP-1 and the MFP-1 use two 9 volt Alkaline or Lithium bat- DIVER WITH PINGER RE- teries. The “Extended Operations Option” package uses six batter- CEIVER PREPARING TO DIVE ies. -
Page 6: Distance/Range
BATTERIES ing pulse repetition rate, the length of each pulse, and the output JW Fishers pingers are powered by standard 9 volt batteries (square power. The length of each pulse and output power adjustments allow rectangular shape). Two types of batteries are recommended for use the operator to adjust the distance the pingers can be detected. -
Page 7: Theory Of Operation
THEORY OF OPERATION When the pinger is turned on (manually, or automatically when the pinger is put in the water) a continuous series of acoustic pulses (sound waves) are emitted from the transducer (black end) of the pinger. The pulses are of very short duration. The pulse length is measured in milliseconds (ms), and travel out from the transducer in all directions. - Page 8 4 ms time frame shown above) is factory set for the Before deploying the pinger, write down the pinger frequency for Single Frequency Pinger (SFP-1) at 22, 32, 40, or 50kHz at time future reference (when you want to find it, you need to know the of order.
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Page 9: Single Frequency Pinger Jumper Layout
OPERATION Single Frequency Pinger Jumper Layout Pinger operation is simple and straight forward. (Front side of board shown) 1) Remove the electronics board (see page 11). 2) Install “push on” jumpers (see page 6 or 7) for: • Power Output ............2 watt Sample settings shown are for moderate distances (less than •... -
Page 10: Multifrequency Pinger Jumper Layout
Multifrequency Pinger Desired Freq Switch Frequency Settings (Frequency Selection Switch) 20000 ....11100100 Multifrequency Pinger Jumper Layout 20500 ....00010100 21000 ....10010100 (Front side of board shown) 21500 ....01010100 Frequency 22000 ....11010100 Selection Switch Switch 22500 ....00110100 is on 23000 .... -
Page 11: Multifrequency Pinger Frequency Switch
Metal Contacts (for Water power activation) Transducer Multifrequency Pinger Retaining Cap Jumper Layout (Front side of board shown) 1 2 3 4 5 Rep Rate (seconds between pulses) 1 2 3 4 5 1 2 3 4 5 1 2 3 Power Output 1 2 3 4 5 1 2 3 4 5... -
Page 12: Operation
Multifrequency Pinger Desired Freq Switch Frequency Settings (Frequency Selection Switch) Metal Contacts 20000 ....11100100 (for Water power activation) 20500 ....00010100 21000 ....10010100 Transducer Frequency 21500 ....01010100 Selection Switch Switch 22000 ....11010100 is on 22500 ....00110100 23000 ....
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