Transmitter Related Errors; Time Zero Jitter - Sensors & Software pulseEKKO Product Manual

If neither of the above solutions solve the problem, contact Sensors & Software Inc.

12.5 Transmitter Related Errors

If there is no signal on the screen, go to
antennas about one antenna length apart. If the pulse still cannot be found do the following
checks:
1. Make sure the transmitter batteries are properly charged and connected.
2. Check the condition of the single fibre optic cable to the transmitter, looking for any
signs of stress or damage. Replace or repair if needed.
3. Check that the brass antenna sockets in the bottom of the transmitter and receiver and
ensure that the brass antenna pins in the top of the antennas are properly tightened.
Also check that there is a good contact between them.
4. With the system running, find the fibre optic cable from the transmitter, disconnect it at
the DVL and look for a red light coming from the top hole in the Fibre Optic Converters
(Section 2.1.5). Plug this cable back in and unplug the Input (black) cable at the
transmitter. Check for a red light coming from the cable.

12.6 Time Zero Jitter

If scope mode shows the first break shifting up and down as shown in Figure 12-2, this is an
indication that the fibre optic cables are damaged.
Figure 12-2: Time zero jitter is caused by damaged fibre optic cables.
Check all cables. There are also short fibre optic cables located inside the transmitter and
receiver that may be causing the problem (see item K in Figure 13-4). Before attempting to
clean or replace these cables,
Scope mode
contact Sensors & Software.
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(5.2.5) and try the Auto search. Keep the
Troubleshooting