9.3
Handling and Transport
• The RTF module is designed for rugged handling, but it remains a precision test instrument and should be handled
with care
• Do ship the RTF module in the padded carry case provided where possible
• Airfreight of the RTF module is allowed as there are no dangerous items
• Transport via road freight is preferred to air freight due to care of handling
9.4
Cleaning the RTF Module
Before commencing any cleaning, disconnect the RTF module from the iQA/iPA. We recommend that the exterior surface
of the RTF module be cleaned using a soft cloth moistened in water. Do not use aerosol or liquid solvent cleaners.
The 7-16 connector mating surfaces on the RTF module should be cleaned using a cotton bud and an isopropyl wipe to
remove dirt, dust & small metal filings. This should be done on a regular basis, as lack of cleanliness is one of the major
causes of PIM problems. The cleaning kit supplied with the iQA/iPA accessories kit can be used for this purpose.
9.5
Troubleshooting Guide
If the remedies indicated in the chart below do not solve the problem, consult the manufacturer for further instructions.
Connection Between iQA/iPA and RTF Module
COMMS LED on RTF Module is not flashing
• Ensure iQA/iPA is turned on and ready for use.
• Check that USB cable is connected between RTF module and iQA/iPA.
• Disconnect USB cable from iQA/iPA, wait 5 seconds, then reconnect.
• Check integrity of USB cable.
•
If the above actions do not fix the problem the test set should be returned to a Kaelus approved service facility.
DC Power LED on RTF Module is not illuminated
• Ensure iQA/iPA is turned on and ready for use.
• Check that Monitor cable is connected between AUX port of RTF module and Monitor port of iQA/iPA.
• Check that USB cable is connected between RTF module and iQA/iPA.
• Disconnect USB cable from iQA/iPA, wait 5 seconds, then reconnect.
• Check integrity of Monitor cable.
• Check integrity of USB cable.
•
If the above actions do not fix the problem the test set should be returned to a Kaelus approved service facility.
Instrument Operation
Instrument will not accept my Max Range setting
There is a limit to how large the value of Max Range can be. This limit is dictated by the minimum frequency step size to
which the transmit tones can be programmed (100 kHz on most iQA/iPAs).
In addition to this, Max Range is also affected by the RTF sweep settings. The following guidelines should be followed in
order to achieve the largest possible Max Range setting:
• Set the F1 tone frequency to be below the F2 sweep range.
• Change the PIM product to IM3.
•
If the above actions do not fix the problem, it is possible you have reached the limit of the instrument’s capabilities.
The largest value of Max Range that the system can accept (assuming the above guidelines have been followed) is
given by the following expression:
1500 x vf metres (4950 x vf feet)
where vf = cable velocity factor
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