Uni-Directional Digital Cable Products Supporting m-card m-udcp device Acceptance Test Plan tp-atp-m-udcp-i05-20080304 issued notice This Test Plan document is furnished by Cable Television Laboratories, Inc

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3.1.3Host FAT LO Leakage Test

3.1.2FAT Channel HRC/IRC Tuning Test

This test verifies HRC/IRC tuning of Device under Test.

Equipment: Analog HRC channel 5, Analog IRC channel 5, (64 or 256) QAM HRC at low channel, (64 or 256) QAM IRC at mid channel, digital source

Setup: Prepare the receiving device in the proper tuning mode. To set C6U to HRC/IRC mode, Select Converter A or B, push down arrow until “option menu” appears. Push “right” arrow once, then down arrow twice until “mode” appears. Push right arrow on front panel display until desired modulation (HRC/IRC) is displayed. Push the “enter” button to lock desired settings. Set visual carrier to 0 dBmV and Analog aural carrier signal to –10dBc at the RF input to the DUT.

Procedure:

Step#	Procedure	Pass/Fail	PICS
	Power up DUT.	N/A
	Connect a HRC low-channel QAM source to HFC network. (Spectrum between 54 to 864MHz.)	N/A
	Tune the DUT to the low-channel QAM HRC source.	N/A
	Verify proper reception of QAM source with/on DUT including all additional tuners.		HFATrf.5 HFATrf.13 MHost.6
	Connect HRC analog channel 5 source to HFC network.	N/A
	Tune DUT to the HRC analog channel 5.	N/A
	Verify proper reception of Analog source with/on DUT including all additional tuners.		HFATrf.5 HFATrf.13 MHost.6
	Re-configure the HRC to an Analog IRC low-channel source. (Spectrum between 54 to 864MHz.)	N/A
	Tune DUT to the low-channel Analog IRC source.	N/A
	Verify proper reception of IRC source with/on DUT including all additional tuners.		HFATrf.5 HFATrf.13 MHost.6
	Re-Configure the IRC analog channel 5 source to output IRC QAM channel 5.	N/A
	Tune the DUT to the IRC QAM channel 5.	N/A
	Verify proper reception of QAM source with/on DUT including all additional tuners.		HFATrf.5 HFATrf.13 MHost.6

3.1.3Host FAT LO Leakage Test

This test verifies that the amount of local oscillator power leaking out of a Host Device and back into the cable plant is within spec limits.

Equipment: Host under test, HP8561E spectrum analyzer

NOTE: This test only applies to Host devices using a single conversion type RF tuner where the local oscillator frequency is separated from the desired video carrier by an amount equal to the IF frequency. If the Host device employs a dual conversion type RF tuner the local oscillator frequencies are typically above the entire input range and therefore the test is not applicable.

Procedure:

Step#

Procedure

Pass/Fail

PICS

Connect the DUT to the 75 ohm input of the spectrum analyzer

N/A

Tune the DUT to the 1^st EIA channel listed in Table (step 10)

N/A

Set the spectrum analyzer center frequency to the value specified in the column labeled Video Carrier from Table (step 10)

N/A

Set the spectrum analyzer frequency span to 1 MHz

N/A

Change the spectrum analyzer amplitude units to dBmV

N/A

Set the spectrum analyzer reference level to 0 dBmV

N/A

Set the spectrum analyzer video bandwidth to 300 Hz

N/A

Set resolution bandwidth to 9 KHz.

N/A

Measure the level at the corresponding LO frequency

N/A

Repeat test for each of the Video Carriers listed in the table 3.1-1:

Table 3.1-1 – Video Carriers

EIA channel designation	Video Carrier (Mhz)	LO Frq (Mhz)	LO level (dBmv)
2	55.25	101
17	139.25	185
23	217.25	263
36	295.2625	341.0125
49	373.2625	419.0125
63	457.25	503
76	535.25	581
89	613.25	659
108	697.25	743
121	775.25	821

Verify the LO leakage is <-37 dBmV over 54 MHz to 864 MHz. Range.

HFATrf.14

Repeat tests for all additional tuners.

MHost.6

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