Klein 3900 Series Operation And Maintenance Manual page 40

3-6
CHAPTER 3 Preparation for Use
towfish or the TPU electronics, or to both.
electronics, or both.
The male Type N connector on the TPU end of the tow cable connects to the
TOWFISH connector on the TPU rear connector panel. The shackle on the tow
cable connects mechanically to the towfish tow bracket using a tow pin. The
waterproof connector on the towfish end of the tow cable connects to the
waterproof connector on the tow cable.
The tow cable jumper is secured with cable ties to the top of the towfish. The
towfish mechanical and electrical connection procedure is as follows:
Remove the retaining ring from the beveled end of the tow pin and withdraw
1.
the pin from the tow bracket. Align the tow shackle mounting hole with the
upper mounting hole of the tow bracket, with the shackle pigtail connector
facing the tail of the towfish. Insert the beveled end of the tow pin through the
holes in the tow cable shackle and the bracket and secure the pin with the
retaining ring.
2. Remove the dummy plug from the connector on the end of the tow cable jumper.
Apply a thin film of silicone grease to the pins of the connector. Do not over
grease. Align the male and female connectors and press the connectors together
firmly. If necessary, use a slight side to side rocking motion while pressing on the
connector, but do not bend the pins. When properly inserted there should be no
gap between the surfaces of the two connectors.
Series 3900 Sonar System Operations and Maintenance Manual
WARNING In all of the procedures which follow, be sure that the power is
turned off. Disconnect the TPU power cable from the power source. Failure
to follow this practice may result in personal injury or damage to the
SHOCK HAZARD Do not connect or disconnect the tow cable from the
towfish or the TPU when power is on. Failure to follow this practice may
result in personal injury and will damage the towfish or the TPU
NOTE Apply silicone grease to the pins of the towfish connector before
every connection.
CAUTION When connecting or disconnecting the electrical connection, do
not bend it back and forth. Use straight up action. Pull on the connector,
not the cable.
11214510, Rev. 02