DTV Diagnostics Screen C

Diagnostic Screen C

Table -1. Diagnostic Screen C Data Description


Line #	Name	Definition
Line C1
	Acquisition State	0 : pause; 1 : init hardware; 2 : calibration; 3 : tune; 4 : sweep; 5 : acquire viterbi; 6 : acquire reed solomon; 7 : fade control; 8 : vc found; 9 : done.
	Cumulative RSE	Cumulative Reed Solomon error count from the FEC.
	Loop Control	0 : fade; 1 : wide; 2 : narrow; 3 : flush.
	Modulation Mode	0 : none; 1 : QPSK; 2 : BPSK; 3 : OQPSK; 4 : VSB8; 5 : VSB16; 6 : QAM16; 7 : QAM32; 8 : QAM64; etc.
	Multiplex	Multiplex channel in the format xYz, where x is s if swapped, n if not swapped, Y is I, Q or B (both), and z is I, q, b (both inverted) or . (neither inverted).
	Coding Mode	Coding mode: { 5/11, 1/2, 4/7, etc.}.
	Channel number	Current Virtual Channel Number or channel entry accumulator.
Line C2
	Current LNB Offset	Current offset, in MHz.
	Symbol Rate	Symbol rate: {29.27, 19.51, 14.63, etc.}.
	IF Frequency	Current IF frequency in MHz.
	Coarse DAC value	6 bit PWM value for coarse D/A..
	Fine DAC value	Corresponds to a "human" viewpoint of the DAC that corresponds to the PWM behavior (i.e. as the DAC increases, frequency increases).
	AFC State	NA : No AFC; LS : Loop Stress; FA : Frequency Adjust; CLS : Check Loop Stress; ALS : Adjust Loop Stress.
	Signal Quality Threshold	Signal Quality Threshold (0..139). The Instantaneous Signal Quality is compared against this value in the calculation of Time Above Signal Threshold. Initialized to 0, it can be changed via the Unit Information message. See Notes 1 and 3.
Line C3
	Instantaneous Signal Quality	Instantaneous Signal Quality (0..139). Normalized for code rate to provide a comparative measurement of signal quality. Calculated once a second from the EbNo while acquired to a signal, and fixed at 139 when not acquired.
	Minimum Signal Quality	Minimum Signal Quality (0..139). The high water mark of the worst Instantaneous Signal Quality measurement. Signal Quality measurements based on fewer than 16 norm count samples or while not acquired to a signal are excluded from this comparison. See Note 1.
	Average Signal Quality Sum / Average Signal Quality Samples	Once every 15 minutes the Instantaneous Signal Quality is added to a running summation (the Average Signal Quality Sum) and a sample counter (the Average Signal Quality Samples) is incremented by 1. The sample counter is 16 bits, and will wrap after 682 days unless it is cleared. The running summation is 32 bits. See Notes 1 and 2.
	Time Above Signal Threshold	Once every 2 seconds the Time Above Signal Threshold is incremented if the Instantaneous Signal Quality is greater than the Signal Quality Threshold. See Notes 1, 2 and 3. The percentage of time spent with a signal outside of threshold can be approximated by dividing the Time Above Signal Threshold by the total time being measured, i.e. Time Above Signal Threshold / (sample counter * 15 minutes * 60 / 2 seconds).
	EbNo	The current signal to noise ratio from -3.0 through 10.9. The EbNo Count is calculated once a second from the most recent 16 norm counts. Norm count samples are collected every 50 ms when RS sync is first acquired (for the first 16 samples), and when manual tune, installer, and Diagnostic Screen C are up. Otherwise norm count samples are collected only once a second.
Line C4
	Transport-Waveform	Transport : {0 : STD_MPEG2; 1 : Other} Waveform : {00 : SC_WS_UNKNOWN; 01 : SC_NTSC; 02 : PAL_625; 03 : PAL_525; 04 : SECAM; 05 : D2_MAC; 06 : B_MAC; 07 : C_MAC; 08 : SC_DCI; 09 : SC_VIDEOCIPHER; 0A : RCA_DSS; 0B : ORION; 0C : LEITCH; <other> : Reserved}
	Source ID: Service Number	Source ID :Identifies source of current VC. Service Number : Associates current VC with service defined in program association and TS service map messages.
	RF Frequency	Current RF Frequency in MHz.
	Transport Stream ID	Two decimal numbers.
	Acquisition Debug Register	Provides a bit field (32 bits) of diagnostic data for acquisition. The individual bits are the following: HighestSyncStateAchieved:3;(Green)highest acquisition state. no479_5:1; (Red) binary search did not find CTLPWMRangeHiWarning:1; (Yellow) coarse DAC > 38 CTLPWMRangeLowWarning:1; (Yellow) coarse DAC < 08 NoOverlap:1; (Red) bins do not overlap. CTLPWMRangeHiError:1; (Red) coarse DAC > 3C CTLPWMRangeLowError:1; (Red) coarse DAC < 04 NegOrEqualFineBinSize:1; (Red) no fine DAC range. FineDACDeltaErr:1; (Red) this check not done in current code.
Line C5
	IPPV enable	(0 : disabled; 1 : enabled).
	unreported shows	unreported show count (0 .. 32.).
	day count	Number of full days since last successful reportback.
	time without report trigger	(seconds).
	PIM service provider	service provider ID
	PIM package provider	package provider ID
	Reacquisition Status	A 6 character string indicating reacquisition status. See Table 1.4-3.
Line C6
	time slot	callback slot used initially (seconds since midnight).
	last successful reportback	time in GPS.
	last attempted reportback	time in GPS.
	next reportback	time in GPS.
Line C7
	show count	current record for total number of shows purchased by ACP.
	stack limit	largest show count that user can hold IPPV history record.
	debit total	current debit amount reported from ACP.
	credit total	total IPPV credit available to IRD.
	currency region	currency region.
	Video mode	0 : DCII 1 : VCII 2 : CLEAR 3 : CATV 4 : OSD
Line C8
	Audio Masks	mute, applicable, override & effective mute masks for audio. See Table 1.4-2.
	Video Masks	mute, applicable, override & effective mute masks for video. See Table 1.4-2.

Diagnostic Screen C Notes


Note 1	Minimum Signal Quality, Average Signal Quality, and Time Above Signal Threshold are all cleared: After any successful reportback; When the INFO key is pressed while Diagnostic Screen C is up; By a reboot (AC power loss, download, reset to factory defaults, etc.); When the Signal Quality Threshold is changed.
Note 2	The Average Signal Quality and Time Above Signal Threshold are accumulated continuously, regardless of signal acquisition. The only exception is a 2 second interval after every channel change, in which they stop counting and Signal Quality measurements are discarded.
Note 3	Signal Quality is based on error counts, making it an inverse measurement. Thus a high Signal Quality corresponds to a high error rate, and Signal Quality above threshold corresponds to signals worse than threshold.

Table -2. Mute Mask Definitions


bit #	Audio Mute	Video Mute
0	POWER_ON_OFF	POWER_ON_OFF
1	SAT_TV	SAT_TV
2	AUTHORIZATION	AUTHORIZATION
3	ACQUISITION	ACQUISITION
4	SUPPRESSED_AUDIO	SUPPRESSED_VIDEO
5	SAT_LOCK	SAT_LOCK
6	UIF	UIF
7	TASK_INTERNAL	TASK_INTERNAL
8	CLR_SYNC	CLR_SYNC
9	ANALOG_CH_CHANGE	ANALOG_CH_CHANGE
10	SUBCARRIER1	SUBCARRIER1
11	SUBCARRIER2	<not used>

Table -3. Reacquisition Status String


char posn	Meaning	Detail
1	REACQ state	0 - REACQ inactive 1 - REACQ searching 2 - Signal found match PIDs of lost signal (not currently used) 3 - DCII signal found, searching for matching VCT and VCR 4 - Matching VCT and VCR status known 5 - DCII signal found, searching for matching TSID 6 - Matching TSID status known
2	Algorithm step	Hex character 0 through F (product dependent).
3	Carrier Lock Status	'C' : carrier found; 'c' : carrier NOT found.
4	RS Sync Status	'S' : RS synced; 's' : RS NOT synced.
5	Found Signal Type	'D' : DCII; 'V' : VideoCipher; 'F' : FM clear.
6	Feed Status	'M' : Manual Tune; 'F' : Filtering msgs; 'C' : Confirmed feed.