Page 80
AIM 2 Operation Manual
12. On the SAT TUNE RESULTS screen, review
the results of the test. The screen shows:
• Power of the transponder signal (in
dBm—power ratio in decibels of the
measured power referenced to one
milliwatt).
• Measurement of the signal-to-noise ratio,
expressed as SNR in decibels.
• Measurement of the signal quality,
expressed as an SQ value between 0
and 100.
• Frequency offset of the transponder signal from its expected frequency (in
megahertz).
• Indication as to whether the transponder signal is above the power lock
threshold.
13. Troubleshoot any problems following the instructions provided by DIRECTV.
• To repeat the test at a different location, press CHANGE LOC. Then go to Step
5.
• To repeat the test at a different orbital slot, press CHANGE SAT. Then go to Step
9.
• To repeat the test at a different transponder, press CHANGE TR. Then go to Step
10.
To repeat the test for a sequential transponder, use the up/down arrow buttons
to change the transponder number to the next or previous transponder. The SAT
TUNE RESULTS screen updates to show the results of the test for the selected
transponder.
14. Press DONE to return to the TEST screen.
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