Motorola DCT 2000 installation manual Band Error, PCR Lock − OSD Only, S s value Meaning

Page 52

B - 1 0	D i a g n o s t i c s

PCR Lock − OSD Only

The PCR lock indicates a program-clock-reference lock with the current digital datastream.

Signal - To - Noise Ratio (SNR) and Automatic Gain Control (AG C)− OSD Only

The SNR displayed on the OSD is a rough estimate of the carrier signal-to-noise ratio. The SNR displayed is a measure of the QAM cluster variance, which is proportional to the signal-to-noise ratio.

The AGC value roughly indicates the received signal level.

Analog channels display analog for carrier lock. The SNR and AGC display a number for the numeric value and blank for the ssss value. A blank display indicates that the digital section of the DCT 2000 is still in the initial state. If this occurs, check diagnostic d07.

Table B-9 lists the SNR and AGC indicators for the OSD:

Table B - 9

SNR and AGC indicators − OSD only

s s s s value	Meaning
GOOD	Good value
FAIR	Marginal signal level − check the signal
BAD	Unusable signal

d 04: In Band Error

The error count represents the number of uncorrectable errors in the digital multiplex. The QAM receiver must be locked to the signal before errors can be detected. A four-digit value of 0000 displayed on the LED indicates that there are no uncorrectable errors. The display shows the short-term error count and is updated every five seconds. The maximum count is 9999.

The long-term error count is a sum of the errors occurring over the last 24 hours of DCT 2000 operation. This data is maintained between channel changes and power cycles. This count is reset every 24 hours of DCT 2000 operation. The maximum is 9999 counts.

Figure B-8 shows the receiver status error count on the LEDs:

Figure B - 8

In - band receiver status error count short term LEDs

When there is no carrier lock, the LEDs display four dashes (−−−−).

DCT 2000 Installation Manual

Image 52

Contents Cursormessages Remote Page Installation N t e n t sT r o d u c t i o n E r v i e wTroubleshooting Specification sD i n g t h e I R B l a s t e r O p t i o n A g n o s t i c sBack view of remote control Standard cabling B r e v i a t i o n s a n d a c r o n y m s G u r e sAudio on the VCR CD player cabling Audio through Stereo ReceiverFigure B-3 DCT 2000 Status − OSD B l e s A t u r e s a n d O p t i o n s T r o d u c t i o nSection Number, and the repair/return procedure I n g T h i s M a n u a lDCT 2000 advanced set top terminal Operational testsL a t e d D o c u m e n t a t i o n C u m e n t C o n v e n t i o n sY o u N e e d H e l p AsteriskL l i n g f o r R e p a i r s T 2 0 0 0 Installation M a n u a l E r v i e wO n t P a n e l G u r e 2 T 2 0 0 0 f r o n t p a n e lYF e a t u r e N c t i o nA r P a n e l E mG u r e 2 T 2 0 0 0 r e a r p a n e l B l e 2 A r p a n e lLeft and right audio RCA jacks used for stereo audio output T i o n sG u r e 2 T 2 0 0 0 o p t i o n s M e N c t i o n DRC 400 remote control DRC 400 Remote ControlM o t e C o n t r o l s Remote control keys Displays preset favorite cable channelsDisplays the help screen Or page Pages through menu screens and the program guideInstalling Batteries in Remote Control Back view of remote control DCT 2000 Installation ManualInstall i n g t h e D C T 2 0 0 InstallationF o r e Y o u B e g i n A n d a r d C a b l i n g D i a g r a m Standard wiring with a Starfone module A R F O N E m o d u l e c a b l i n g d i a g r a mA n d a r d V C R C a b l i n g D i a g r a m G u r e 3 A n d a r d V C R c a b l i n gB y p a s s S w i t c h V C R C a b l i n g D i a g r a m s Cabling with RF Bypass module using RF return Module with a Starfone module I n M o d u l e C a b l i n g D i a g r a m sModule with return on Cable a Illustrates a DCT 2000 when the return is on Cable B Module with return on Cable BReturn on Starfone module G u r e 3 1 T u r n o n C a b l e B See appropriate Cable diagram Composite VCR cabling E r e o C a b l i n g D i a g r a m B a s e b a n d StereotvStereo Audio on VCR/audio output on TVCD Player CD player cablingDigital Audio Mode PCM Mode AC 3 Mode L b y D i g i t a l C a b l i n g D i a g r a m sAudio port functionality Left/Right RCA ports Audio for digital and analog channelsD i o t h r o u g h S t e r e o R e c e i v e r Video Baseband VideoFeature Testing Procedure E r a t i o n a l C h e c kD i n g t h e I R B l a s t e r O p t i o n IR transmitter installed in mounting bracketC a t i n g t h e I R R e c e i v e r o n t h e V C R E c k i n g t h e Installation Install i n g t h e I R B l a s t e rIR Blaster installed Troubleshooting Problem Possible SolutionSpecification s Appendix a25 dB 136 channels, each @ +15 dBmV Hum modulation distortionSpecification s C e s s i n g D i a g n o s t i c s A g n o s t i c sAppendix B Moves the cursor up Displays the Diagnostics Main menu V i g a t i n g t h e D i a g n o s t i c sOFF state Off state No functionDiagnostic Table B DiagnosticDCT 2000 General Status Figure B DCT 2000 general status − LEDsInitialization status errors Error Code Cause RemedyOut-of-Band Receiver Status StateData Activity and EMM Data Activity Indicators StatusOff Blank Data receivedIn-Band Receiver Status Figure B Band receiver digital status − LEDEMM Data Activity Indicator − LED and OSD Band Data Activity Indicator − LED and OSDCarrier Lock − LED and OSD PCR Lock − OSD Only Band ErrorS s value Meaning Figure B Band receiver status error count short term OSD Unit AddressDCT 2000 Unit Address Firmware Version Figure B DENA firmware version LEDsCurrent-Channel Status LED Channel TypesT LED Table B Channel Types − LED and OSDPurchasable Indicator − LED and OSD Preview Indicator − LED and OSDAcquisition States D LED StateCurrent Channel Status OSD Figure B Current Channel Status OSD for analog channelVariables Current channel status − OSD fieldsTable B Current channel status − OSD fields Renewable Security System Figure B Renewable security status LEDsCurrent Mode TvPC Required − LED and OSDTvPC Status LEDs and StatusStarvue II RF Diagnostics Upstream Modem StatusStarfone Diagnostics LED and OSD IndicatorMode T Digit D Digit Meaning Mode Status LEDOSDModeApplication Code Modules First LED ModeTable B First LED indicating current status of download Keyboard Diagnostics Memory StatusInteractive Info OSD MAC Frequency OSDB r e v i a t i o n s a n d a c r o n y m s 02/00469714-001-99