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Crystal Vision

 

Introduction

 

Crystal Vision 

 

Introduction 

 

System overview 

The converter is configured as two independent converter channels each with 

their own error masking, validity checking and regeneration circuitry. 

Intelligent audio routing provides for channel swapping, single channel mode 

and phase inversion. 

 

 

There are two operational modes, ‘Auto’ allows flexible Phase Locked Loop 

sample rate  control to accept a wide input frequency range, whilst the ‘Xtal’ 

mode is provided for crystal  locked operation at 48kHz. 

 

Control of the card is on a first come first served basis from the card edge, 

Statesman, the  frame control panel (if fitted) or a remote control panel. 

 

Two stereo pairs are output for each channel from the 24 bit Digital to 

Analogue converters  and are buffered to provide duplicate outputs and 

headphone monitoring. 

 

There are also three different types of rear module to provide a wide range of 

I/O options. Further details of the rear modules can be found in the installation 

chapter. 

Control

 

The control of the DACA214 will always follow the last control surface used. 

For example, if  a card edge lever is moved the unit will switch to and remain 

in the ‘Local Control Mode’. If  any control panel menu is used, then the unit 

will switch to and remain in the ‘Remote Control  Mode’. The settings made 

will be remembered after a power down and the last control mode  used will 

be retained. 

 

The auto-configuration process performed when a DACA214 is first powered 

up, detects the  current configuration settings and restores the appropriate 

control. 

 

Once this initialisation procedure is complete, the card can be controlled or 

configured from  Statesman, the card edge, the frame’s local control panel or 

from a remote control panel. 

 

DACA214 User Manual R1.9

 

4   

04 February 2019

 

Содержание Indigo DACA214

Страница 1: ...l to analogue audio converter Crystal Vision Ltd Lion Technology Park Station Road East Whittlesford Cambridge CB22 4WL England Tel 44 0 1223 497049 Fax 44 0 1223 497059 sales crystalvision tv www cry...

Страница 2: ...ng channel gain and input termination 8 Audio Monitoring 8 3 Using the front control panel 9 The DACA214 menu structure 11 Setting channel gain and input termination 13 Audio Monitoring 13 Status menu...

Страница 3: ...21 Using GPIs 27 GPI input assignments 27 GPI output assignments alarms 27 GPI Connections 28 Hardware configuration 28 Setting channel gain 28 Setting input terminations 29 Wiring XLR breakout leads...

Страница 4: ...and audio quality is ensured with sophisticated error masking Also near silence detectors monitor the audio signal level in both channels in case they fall below 50 dBFS for more than a selected perio...

Страница 5: ...uplicate outputs and headphone monitoring There are also three different types of rear module to provide a wide range of I O options Further details of the rear modules can be found in the installatio...

Страница 6: ...S422 to RS232 converter if the PC has no RS422 ports Installing Statesman Refer to the readme and or help file on the CD before proceeding To view all application windows set graphics resolution to at...

Страница 7: ...and size coding is used A module is shown present by full colour and absent by greyed colour A module is shown open by large icon size and closed by small icon A module is the source of an active alar...

Страница 8: ...ected period of time a LED indicator comes on Silence detect indicators show if the left or right channel of the stereo AES1 and or AES 2 signals have been silent Silence warning and loss of input war...

Страница 9: ...e variations are as follows channels may be swapped so that AES 1 feeds Stereo Output 2 and AES 2 feeds Stereo Output 1 both output stages may be assigned to either AES 1 or AES 2 effectively doubling...

Страница 10: ...he first time At power up the two line 20 character screen will display Crystal Vision followed by the firmware version number for the control panel All eight control panel key LEDs will illuminate Th...

Страница 11: ...the Device menu The top line of the display will show Available Cards X where X is the number of cards that have responded so far to the polling request The available cards menu Rotate the shaft encod...

Страница 12: ...ry control shaft encoder used to select options or variable data Note Please refer to the Crystal Vision Control Panel manual for details of the Panel Setup Lock Panel and Diagnostic menus Updating th...

Страница 13: ...differ from the actual settings due to Statesman GPI inputs or remote CONTROL settings from the front panel overriding the front PCB control settings Press the CAL button to update the display Menu n...

Страница 14: ...Dual channel operation SWAP Inputs are swapped SWAP Inputs are NOT swapped SNGL Single channel mode delay Time period required for signal to remain below threshold before input silent is asserted s A...

Страница 15: ...ce is displayed The standard tolerance shown is 400 PPM or 4 Active audio channels are indicated by the numbers 12 Left 1 Right 2 Any silent channels are indicated by the symbol s Note ERR indicates t...

Страница 16: ...g settings 2 AUTO 48K mode 6 Rph or Rph phase of right hand channel and 8 GPO 6 enabled or disabled The COM menu bottom line shows the current status effect of the following 3 SNGL DUAL and 4 SWAP or...

Страница 17: ...itch SIL T Silence delay may be increased using the F3 or decreased using F4 between 1 5s and 120s in 8s steps In SNGL mode use F2 to select the AES channel before changing the delay Silence warning a...

Страница 18: ...figures This is referred to as Xtal Mode and should be used at all times if possible The second mode uses built in phase locked loops and VCOs to accept any sample rate from 30 kHz to 50 kHz This is r...

Страница 19: ...used AES input will be disabled and therefore silent even if an active AES feed is present GPI connections to the shuffling mode lines will override card edge switches if asserted to logic low or grou...

Страница 20: ...ld SIL TIME Threshold 0 1 2 3 4 5 6 7 1 5 seconds 8 seconds 16 seconds 24 seconds 32 seconds 40 seconds 48 seconds 56 seconds 8 9 A B C D E F 64 seconds 72 seconds 80 seconds 88 seconds 96 seconds 104...

Страница 21: ...e connectors All frame slots can be used RM12 12 modules per 2U frame For 75 Ohm unbalanced AES inputs GPI lines also available at frame remote connectors All frame slots can be used RM11 12 modules p...

Страница 22: ...o 2 Left 1 output Stereo 2 Left 2 output AES 2 Auto XTAL Single Dual Channels AES 2 Alarm Stereo 1 Right 1 output Stereo 1 Right 2 output Stereo 2 Right 1 output Stereo 2 Right 2 output input input ou...

Страница 23: ...able has plug on it Pin number Function Comments 1 AES1 LO Low screen for signal pair 1 2 3 AES 1 AES 1 Stereo 1 AES Input 4 N C 5 N C 6 AES2 LO Low screen for signal pair 2 7 N C 8 N C 9 10 AES 2 AES...

Страница 24: ...tput Stereo 1 Right 2 output Stereo 1 Left 1 output Stereo 1 Left 2 output Stereo 2 Left 2 output AES 1 Auto XTAL input AES 2 Auto XTAL input Normal Swap Channels input Dual Single Channels input AES...

Страница 25: ...able has plug on it Pin number Function Comments 1 AES1 LO Low screen for signal pair 1 2 3 AES 1 AES 1 Stereo 1 AES Input 4 N C 5 N C 6 AES2 LO Low screen for signal pair 2 7 N C 8 N C 9 10 AES 2 AES...

Страница 26: ...al Channels AES 2 Alarm Stereo 1 Right 1 output Stereo 1 Right 2 output Stereo 2 Right 1 output Stereo 2 Right 2 output input input output input input output Notes The GPI 1 to 4 lines are also availa...

Страница 27: ...put a13 NC No user connection c14 GPI_2 Swap AES inputs input a14 NC No user connection c15 GPI_3 Auto Xtal input a15 NC No user connection c16 GPI_4 Video Sync REF input a16 NC No user connection c17...

Страница 28: ...ons as follows GPI Effect when GPI input is asserted low GP1 1 Changes AES1 from Xtal Mode to Auto Mode GP1 2 Changes AES2 from Xtal Mode to Auto Mode GP1 3 Swaps AES1 input circuit with AES2 input ci...

Страница 29: ...12 2 13 2 10 10 1 11 1 19 1 20 1 21 2 22 2 11 3 3 12 3 22 3 21 3 12 4 13 4 12 10 3 11 3 19 3 20 3 21 4 22 4 Note Remote 1 and Remote 3 are 26 way high density D type female sockets and frame ground is...

Страница 30: ...lengthways so it is only connected to the middle pin for higher impedance inputs This is useful when a number of circuits share the same 110 Ohm or 75 Ohm source signal The final PCB in the loop norm...

Страница 31: ...way male D plug pin out out 1 screen CH1 CH1 CH2 CH2 CH1 CH1 CH2 CH2 L1 L2 L1 L2 R1 R2 R1 R2 4 7 13 tinned copper wire common ground link 2 5 7 9 11 18 20 22 24 3 6 8 10 12 19 21 23 25 Analogue output...

Страница 32: ...48 kHz or Automatic AES Reference Mode for 30 50 kHz Notes The 18V supply takes a few seconds after power is initially applied before it is enabled The actual time will vary from slot to slot so that...

Страница 33: ...trol another card in the same rack If necessary re set the card Statesman settings change unexpectedly Active control panel or card edge control settings may have overridden Statesman settings if they...

Страница 34: ...Max 28 dBu output swing with THD 0 005 Default level 0dBFS 18dBu or 24dBu by on board link Monitoring 2 x miniature front mounted audio jacks for stereo audio analogue output monitoring Also available...

Страница 35: ...on Specification monitoring of input missing and silence detection optional Status monitoring Front card edge visual monitoring with LED indicators Remote control panel also available Weight 200g DACA...

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