-
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Powered up Host under test (DUT) connected to a TV with CableCARD) inserted
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N/A
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-
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Connect the Spectrum Analyzer to the RF tap in the same RF network that feeds the DUT.
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N/A
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-
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Set NTSC modulator to channel to be tested.
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N/A
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-
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With a 15dB pad on the output of the NTSC modulator, adjust the output level until it read 0 dBmV on the spectrum analyzer. Then remove the 15 dB pad. This will test the +15 dBmV RF signal level.
Verify that channel is displayed properly on the TV.
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HFATrf.10
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-
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On the modulator adjust the output level of the NTSC modulator until it read 0 dBmV on the spectrum analyzer. Replace the 15 dB pad. This will test the -15 dBmV RF signal level.
Verify that channel is displayed properly on the TV.
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HFATrf.10
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-
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The analog aural carrier (audio) sits at 4.5MHz above the video carrier. Adjust the frequency on the spectrum analyzer accordingly to view the audio carrier level. Then adjust the output audio level in the modulator to vary between –10dBc and –17dBc and listen to the audio on the TV to confirm that the DUT is able to lock and output the audio correctly.
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N/A
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-
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Set 64QAM modulator to channel to be tested.
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N/A
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-
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With a 15dB pad on the output of the 64QAM modulator, adjust the output level until it read 0 dBmV on the spectrum analyzer. Then remove the 15 dB pad. This will test the +15 dBmV RF signal level.
Verify that channel is displayed properly on the TV.
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HFATrf.10
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-
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On the modulator adjust the output level of the 64QAM modulator until it read 0 dBmV on the spectrum analyzer. Replace the 15 dB pad. This will test the -15 dBmV RF signal level. Make sure that channel is displayed properly on the TV.
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HFATrf.10
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-
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Repeat last two steps on all additional tuners
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MHost.6
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-
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Set 256QAM modulator to channel to be tested.
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N/A
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-
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With a 15dB pad on the output of the 256QAM modulator, adjust the output level until it read 0 dBmV on the spectrum analyzer. Then remove the 15 dB pad. This will test the +15 dBmV RF signal level.
Verify that channel is displayed properly on the TV.
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HFATrf.11
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-
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On the modulator adjust the output level of the 256QAM modulator until it reads +3 dBmV on the spectrum analyzer. Replace the 15 dB pad. This will test the -12 dBmV RF signal level.
Verify that channel is displayed properly on the TV.
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HFATrf.1
HFATrf.2
HFATrf.8
HFATrf.9
HFATrf.11
Hnop.2
HFATrf.5
HFATrf.13
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-
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Repeat last two steps on all additional tuners
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MHost.6
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-
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Using a NTCS Modulator, change the frequency to 54 MHz, tune the DUT to channel 2 and verify the channel has proper reception.
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HFATrf.1
HFATrf.2
HFATrf.8
HFATrf.9
Hnop.1
HFATrf.5
HFATrf.13
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-
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Repeat last two steps on all additional tuners
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MHost.6
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-
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Using the RD-21 Broadband Reference Guide, change to the next frequency for the STD frequency column and tune the DUT to the correct channel.
Verify the channel has proper reception.
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HFATrf.1
HFATrf.2
HFATrf.8
HFATrf.9
Hnop.1
HFATrf.5
HFATrf.13
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-
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Repeat last two steps on all additional tuners
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MHost.6
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-
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Repeat last two step for every valid frequency between 54 MHz and 864 MHz for the STD tuning type. Then for IRC tuning types. Then HRC tuning types.
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HFATrf.1
HFATrf.2
HFATrf.8
HFATrf.9
Hnop.1
HFATrf.5
HFATrf.13
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-
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Using a 64 QAM modulator , change the frequency to 54 MHz, tune the DUT to channel 2 and verify the channel has proper reception.
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HFATrf.1
HFATrf.2
HFATrf.8
HFATrf.9
Hnop.2
HFATrf.5
HFATrf.13
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-
|
Repeat last two steps on all additional tuners
|
|
MHost.6
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-
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Using the RD-21 Broadband Reference Guide, change to the next frequency for the STD frequency column and tune the DUT to the correct channel.
Verify the channel has proper reception.
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|
HFATrf.1
HFATrf.2
HFATrf.8
HFATrf.9
Hnop.2
HFATrf.5
HFATrf.13
|
-
|
Repeat last two steps on all additional tuners
|
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MHost.6
|
-
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Repeat last two steps for every valid frequency between 54 MHz and 864 MHz for the STD tuning type. Then for IRC tuning types. Then HRC tuning types. **NOTE is will be nessisary to use two different modulators to complete this test. A lower one for lower frequencies and an upper one for upper frequencies.
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HFATrf.1
HFATrf.2
HFATrf.8
HFATrf.9
Hnop.2
HFATrf.5
HFATrf.13
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