L3 Comminications SERIES 5000 Operation And Maintenance Manual - 3.2

3-2

CHAPTER 3 Preparation for Use

Series 5000 Sonar System Operations and Maintenance Manual

P/N 11210060, Rev. 13.0

3.1.3 Unpacking the Towfish

The towfish is shipped in a reusable wooden crate. Open the crate and inspect the 

towfish for damage. If there is any damage or if any items are missing, 

immediately contact 

L-3 Communications Klein Associates, Inc.

 or your L-3 Klein 

sales representative. Record the serial number of the towfish. The serial number 

can be found on the towfish tow bracket. Save the crate for use when reshipping 

the towfish.

3.1.4 Unpacking the Tow Cable

The tow cable is shipped on a cable palette or reel. Inspect the cable for damage. If 

there is any damage or if any items are missing, immediately contact 

L-3 

Communications Klein Associates, Inc.

 or your L-3 Klein sales representative. The 

TPU end of the cable has a Type N connector. The towfish end has a stainless steel 

tow shackle and a molded waterproof connector. After removing and inspecting 

the tow cable, save the cable reel or palette for future use when reshipping the tow 

cable.

3.2

Mechanical Installation of the TPU and Computer

3.2.1 Location

The TPU is partially sealed against spray and inclement weather. However, for 

equipment longevity, it is best to locate the TPU in a sheltered area. The computer 

should be located near the TPU, and it should be protected against spray and 

inclement weather and located in a sheltered area. For operational convenience and 

safety, this area should be close to or in ready communication with the bridge and 

the winch operator. The sonar operator must have the ability to alert the helmsman 

or winch operator if hazardous operational conditions develop. Make sure that the 

location of the TPU and the computer provides adequate clearance for personnel 

access.

3.2.2 Mounting

The TPU may be mounted on a table or mounted in a 48.3 cm (19 in.) rack (not 

provided). You should also secure the computer modules in a way that will protect 

them as much as possible.

3.2.3 Isolating from Shock and Vibration

The TPU and the computer should not be subjected to excessive or unnecessary 

pounding, shock or vibration. If the TPU is rack mounted, and the vessel is riding 

heavily in the seas or engine vibration is excessive, a thick layer of foam rubber or 

other resilient material may be used to isolate the TPU from the rack.