Troubleshooting Steps; Troubleshooting During Operation - Teledyne ADFM Pro20 Installation And Operation Manual

Symptom
Message: "Transducer not found"
Message: "Recorder not found"
Message "No Command Prompt
Found"
Message "Cannot Open Port"
Ancillary Data VXDR, VDD1, and
VDC are outside the range listed in
section "Maintenance and Trouble-
shooting."
Transmit Test Failure
Message: "Loop Test Failure." An
occasional loop test failure may be
normal since this is a statistical
test. The percentage of loop test
failures should typically be less
than 10%.
Any RAM Test failure
Message: "Clock Interrupt failed"
a.
It is recommended to record the values for Correlation Magnitude, High Gain RSSI, and the results of the
transmit test for later reference

3.4.2 Troubleshooting Steps

Table 3-2 Troubleshooting During Operation
Possible Problem(s)
Sensor cable connector
Cabling between Motherboard and sensor
connector of flow meter
Sensor or sensor cable
Recorder cable assembly
Recorder Assembly
Motherboard
Incorrect port settings on computer
Batteries or power supply
Motherboard
Cabling between the sensor interface board
and the ADFM rear panel sensor connec-
tor.
Connection between motherboard and sen-
sor interface board
Transducer cable or connectors
Motherboard
Transducer improperly connected, or dam-
aged
High interference source
Motherboard.
Motherboard
.
The following procedures are intended to assist fault isolation in
cases where the Built-in-Test (BIT) cannot be executed (no
ADFM wakeup for example), or the BIT determines a problem
with the sensor.
Section 3 Maintenance and Troubleshooting
Action
Refer to Section 3.4.4.
Check recorder ribbon cable con-
nection to motherboard.
Replace recorder assembly.
Replace motherboard.
Adjust communication port settings
on computer
Replace batteries. Check power
supply.
Replace motherboard.
Verify all connections.
Replace motherboard.
Eliminate interference source
shield transducer environment.
Perform Field Test in WinADFM
(refer to WinADFM software man-
ual).
The Correlation Magnitude at Lag 0
should be 255; at Lag 7 it should be
typically < 20. Also, the High Gain
RSSI should be typically < 65.
Otherwise it may indicate a high
source of interference.
Call the factory.
Replace motherboard
ADFM® Flow Meter
a,
or
3-7