Campbell Scientific CDM-VW300 Series Dynamic Vibrating-Wire Analyzer System - Manual (Page 63)

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers
8. Troubleshooting
CDM-VW300 series analyzers are designed to give years of trouble-free
service with reasonable care. However, if factory repair is needed, you must
first contact a Campbell Scientific application engineer to obtain an RMA
(Return Materials Authorization) number. See the
Assistance statement at the
beginning of this manual for more information.
If the procedures in Section 6, Installation, do not lead to successful
measurements, review the following suggestions. If these suggestions do not
resolve the problem, please contact a Campbell Scientific application engineer.
Essential troubleshooting tools include a PC and a volt-ohm meter
(multimeter).
8.1 Connections
Re-check all connections:
• Sensor wiring
• Analyzer wiring and connections
• Datalogger wiring and connections
• Communications interface and PC connections
8.2 Power
Use a volt meter to check that adequate power is provided to:
• CDM-VW300 analyzer
• SC-CPI communications interface
• Datalogger
8.3 Isolating Components
Isolating components is an effective troubleshooting strategy. The following
procedure isolates various components for independent verification.
1. Isolate the CDM-VW300 and sensors from the datalogger. Disconnect the
analyzer from the datalogger and connect it to a PC with DevConfig or
DVWTool software installed (ensure that the CDM-VW300 driver is
installed properly on the PC Windows
® operating system before going to
the field).
2. Attempt to measure sensors in the lab-mode configuration (refer to Section
6.1, Laboratory-Mode Installation).
If the above procedure results in successful measurements, the problem likely
resides with the datalogger. Otherwise, the problem likely resides with the
CDM-VW300 analyzer or the sensors.
3. With the datalogger and CDM-VW300 still disconnected, send a CRBasic
program to the datalogger that measures only panel temperature and
battery voltage. CRBasic Editor defaults to this type of program. Ensure
53