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Question *

Technical Support

Experiencing Technical Difficulties?

In order to better assist you, please follow the steps listed below. The answers will help our technicians determine the best course of action to start up or repair your NDB or DGPS system.

Please answer the following: (* required fields)

Step One

Describe the problem:

Step Two

What is the serial number of the transmitter? *

What is the serial number of the Antenna Tuning Unit (ATU)? *

Is the antenna SAC manufactured?

Yes
No

If no, please list Manufacturer/Model:

If no, please list Radiating Element:

If no, please list Counterpoise System:

Are there fuses blown on the AC or DC input fuses?

Yes
No

What is the operating power of the transmitter?

What is the operating frequency?

What is the PA Volts?

What is the PA Current?

What is the reflected power on the TX?

What light is the transmitter shutting down on into the ATU?

Have you disconnected the ATU and operated the transmitter into a 50 Ohm test load?

Yes
No

Does it shut down while operating on the dummy load?

Yes
No

Do you have a RF output on the dummy load?

Yes
No

What shutdown status/fault is given if any when connected to the test load?

Are the any known failures with the SPA or DMOD board?

Yes
No

Do you have a remote panel?

Yes
No

Are the LED's constantly illuminated on the panel?

Yes
No

Confirm that TB1-3&4 are vacant on the PC-1000C/3 ATU?

Yes
No

Can you confirm that the ATU is getting 12V DC at TB1-1?

Yes
No

What is the fine tap set on?

What is the course tap set on?

What is the impedance switch set on?

What is the antenna current at the ATU?

What is the forward power meter reading on the transmitter?

What is the reflected power reading on the transmitter?

Please give a description of the site and surrounding area:

Company Name *

Name *

Email *

Address

City

State/Region

Zip/Postal Code

Country *

Step Three

After sending the above information, Southern Avionics Technical Support can be reached directly Monday thru Friday 8:00-12:00 am and 1:00-5:00pm Central Standard Time. Please reference the above email.

BEFORE calling, make sure you have the following in place!

A Technician on site with the following testing equipment:

Oscilloscope
Multimeter
Frequency counter

Then call Southern Avionics Tech Support +409.842.1717 ext. 107

We look forward to being of assistance to you!