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Содержание B031

Страница 1: ...B031 DUAL PILOT TONE DETECTOR Handbook Version 0 8 ...

Страница 2: ...urposes only and does not constitute any form of warranty or guarantee All trademarks acknowledged The information in this document is subject to change without notice dB Broadcast Ltd Registered Office Kestrel House Sedgeway Business Park Witchford Ely Cambridgeshire CB6 2HY UK Tel 44 0 1353 661117 Fax 44 0 1353 665617 Email sales dbbroadcast co uk Web www dbbroadcast co uk Registered in England ...

Страница 3: ...l Pilot Tone Detector B031 2007 dB Broadcast Ltd D Do oc cu um me en nt t h hi is st to or ry y Date of first publication 28 03 2007 Current issue and date 0 8 28 th March 2007 Board issue numbers covered ...

Страница 4: ...STALLATION 3 SELECTING REAR CONNECTORS 3 Rear Panel Connections 4 CONFIGURATION AND OPERATION 5 Front Panel Control 5 CONFIGURATION 6 Channel A main module adjustments 6 Channel B main module adjustments 6 Timer module adjustments 7 SAMPLE PROBLEMS AND THEIR SOLUTIONS 9 ORDERING INFORMATION 10 SPECIFICATION 11 ...

Страница 5: ... The front panel LED s indicate undelayed and delayed tone failure The undelayed tone indication will operate immediately tone is lost and the delayed tone indication will operate following tone loss for a preset time The delayed tone indication will extinguish once the signal returns continuously for a preset time period The good to fail time delay period can be adjusted in 1 second steps between...

Страница 6: ...ions for pilot tone fail undelayed and delayed for each channel Peripheral driver output for undelayed tone fail and isolated relay outputs for delayed tone fail and tone OK Adjustable delayed tone fail onset and reset timing Front panel fine adjustment for tone level loss threshold Internal coarse adjustment for tone level threshold and tone frequency sensitivity DART monitoring capable as standa...

Страница 7: ...sion 0 8 I In ns st ta al ll la at ti io on n Selecting Rear Connectors The available rear connectors and the frames signal I O used are as follows Type Frame Connectors Signal types VB130 1U F010 3U Vistek 3 pin screw terminal Analogue audio 3U Vistek style chassis VB130 ...

Страница 8: ...d Status 26 way D type PIN SIGNAL pins 1 13 PIN SIGNAL pins 14 26 1 0V CTL A 14 0V SUPPLY GROUND 2 0V CTL A 15 SPARE 3 0V CTL A 16 SPARE 4 0V CTL A 17 B TONE FAIL DELAYED 5 A TONE OK UNDELAYED 18 B TONE OK DELAYED 6 A TONE OK UNDELAYED 19 DELAYED COMMON 7 DELAYED COMMON 20 DELAYED COMMON 8 DELAYED COMMON 21 B TONE OK UNDELAYED 9 A TONE OK DELAYED 22 B TONE OK UNDELAYED 10 A TONE FAIL DELAYED 23 0V...

Страница 9: ...s indication Controls Threshold Pilot tone loss threshold adjustment Vistek LED Ext Alrm Meaning when lit or active Sig Fail Tone OK Undel Peripheral driver Pilot tone detected tone level below threshold set by Threshold A CHA and Threshold B CHB and or module settings See Configuration section Delay Tone Fail Del Relay Pilot tone loss detected delayed tone level below threshold set by RV1 S1 CHA ...

Страница 10: ...panel adjustment for fine control of tone loss threshold 10dB JP6 Move this link to the top for floating common ground Move this link to the bottom for grounded common ground Channel B main module adjustments Adjustment Main Module Channel A JP7 Select 600 termination or high impedance 50k JP8 11 Place the jumpers in the 19kHz left or 22 5kHz right position for the pilot tone sensitivity required ...

Страница 11: ... Delay in seconds SW2 Delay in seconds 0 0 8 8 1 1 9 9 2 2 A 10 3 3 B 11 4 4 C 12 5 5 D 13 6 6 E 14 7 7 F 15 Adjusting Reset Fail to Good time delay This is the period following a failure that the module waits before signalling that the pre failure state has been regained It is adjusted using SW1 in 0 1 second steps from 0 1 second to 1 5 seconds SW1 Delay in seconds SW1 Delay in seconds 0 0 8 0 8...

Страница 12: ...reshold set with all switches off is 20dB the table shows the additional threshold values for each switch To calculate the required switch setting always subtract 20dB from the total configuration value Example To obtain a threshold of 35dBu set levers 1 12dB and 3 3dB this gives an effective level threshold of 35dB 15dB 20dB The 20dB adjustment is only subtracted once for each input Note It is re...

Страница 13: ...HA S2 for CHB If necessary try backing the sensitivity off a little using the fine threshold control accessible through the front panel RV1 for CHA RV4 for CHB Check the pilot tone frequency links JP 2 5 for CHA JP 8 11 for CHB Check that the incoming signal is correctly terminated The delayed status indicates bad signal too often Check the onset Good to Fail delay is not to low Check the reset Fa...

Страница 14: ... module types 3U Vistek configuration V1606 dB 2PSU 3U Chassis 14 Module slots 2 PSU slots 2 PSUs included V1610 dB 48V 3U Chassis 14 Module slots 2 48V PSU slots 2 48V PSUs included VB130 Screw terminal Rear connector module 1U Vistek configuration dual PSU F010 1U Chassis 2 Module slots 2 PSUs PSUs included VB130 Screw terminal Rear connector module ...

Страница 15: ...ector B031 Specification 2007 dB Broadcast Ltd 11 Version 0 8 S Sp pe ec ci if fi ic ca at ti io on n INPUTS OUTPUTS Signal formats Analogue Audio Connectors 3 Pin Screw Terminal Impedance 600 or Hi Z 50k Link Selectable ...

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