xv
3.8.1 Connecting and Attaching the Tow Cable to the Tow Vehicle .......................................... 3-16
3.8.2 Installing a Depressor Wing and Connecting the Tow Cable ............................................ 3-16
3.8.3 Connecting the 4200 Rack Mount Topside Processor ...................................................... 3-19
3.8.4 Connecting the 4200-P Portable Topside Processor ......................................................... 3-19
3.8.5 Connecting the 701-DL Digital Link ................................................................................... 3-20
3.8.6 Selecting Negative Edge Triggering for the Optional Responder ...................................... 3-21
3.9 System Activation and Test .................................................................................................... 3-21
3.9.1 Activating the 4200 Rack Mount System .......................................................................... 3-21
3.9.2 Activating the 4200-P Portable System ............................................................................. 3-21
3.9.3 Activating the 701-DL Digital Link System ......................................................................... 3-22
3.9.4 Performing the Pre-deployment Checks ........................................................................... 3-22
3.10 Tow Vehicle Deployment ....................................................................................................... 3-24
3.11 Tow Vehicle Recovery ............................................................................................................ 3-26
SECTION 4: MAINTENANCE .................................................................................................................... 4-1
4.1 Clean the 4200 Topside Processor ........................................................................................... 4-1
4.1.1 Clean the Air Filter in the 4200 Rack Mount Topside Processor ......................................... 4-1
4.1.2 Clean the 4200-P Portable Topside Processor .................................................................... 4-1
4.1.3 Clean the 701-DL Digital Link .............................................................................................. 4-1
4.2 Inspect and Clean the Tow Vehicle and Tow Cable after Use ................................................. 4-1
4.3 Inspect and Clean the Underwater Connectors ....................................................................... 4-2
4.4 Storage ..................................................................................................................................... 4-2
4.5 Recommended Spares ............................................................................................................. 4-2
SECTION 5: TROUBLESHOOTING ............................................................................................................ 5-1
5.1 Restoring the Operating System .............................................................................................. 5-1
5.2 Disassembling and Reassembling the Tow Vehicle ................................................................. 5-1
5.2.1 Disassembling the Tow Vehicle ........................................................................................... 5-2
5.2.2 Reassembling the Tow Vehicle ............................................................................................ 5-7
5.3 Calibrating the Compass .......................................................................................................... 5-8
5.4 Topside Processor Troubleshooting Guides............................................................................. 5-8
5.4.1 4200 Rack Mount Topside Processor Troubleshooting Guide ............................................ 5-8
5.4.2 4200-P Portable Topside Processor Troubleshooting Guide ............................................ 5-10
5.4.3 701-DL Digital Lin .............................................................................................................. 5-11