TeeJet RX 400p - Manual (Page 133)

RX 400p
7-1 98-05044
R1
7 Troubleshooting
Use the following checklist to troubleshoot erroneous RX 400p receiver operation.
Table 7-1 provides a problem symptom, followed by a list of possible solutions.
Table 7-1 Troubleshooting
Symptom Possible Solution
Receiver fails to power • Verify polarity of power leads
• Check 1.5 A in-line power cable fuse
• Check integrity of power cable connections
• Check power input voltage (9.2-48 VDC)
• Check current restrictions imposed by power source
(maximum > 1.0 A)
No data from RX 400p • Check receiver power status (display illuminated?)
• Verify that RX 400p is locked to a valid DGPS
signal (DGPS lock symbol engaged)
• Verify that RX 400p is locked to GPS satellites
(GPS Lock symbol engaged)
• Check integrity and connectivity of power and data
cable connections
• Verify RX 400p Mode of operation
Random data from RX 400p • Verify that the RTCM or the Bin95 and Bin96
messages are not being output accidentally (check
the NMEA Output@ menu)
• Verify baud rate settings of RX 400p and remote
device
• Potentially, the volume of data requested to be
output by the RX 400p could be higher than the
current baud rate supports. Try using 19,200 as the
baud rate for all devices.
No GPS lock • Check integrity of antenna cable
• Verify RX 400p antenna port output voltage (5 DC)
• Verify CDA-2B’s unobstructed view of the sky
• Verify antenna cable length < 10 meters
No WAAS lock • Check antenna connections
• Verify 5 VDC across antenna cable connector
• Verify CDA-2B’s unobstructed view of the sky
No OmniSTAR lock • Subscription Activated and not expired?
• Check antenna connections
• Verify 5 VDC across antenna cable connector
• Verify CDA-2B’s unobstructed view of the sky