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Crystal Vision TANDEM-300 User Manual

Single embedder/de-embedder and audio processor
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TANDEM-300
Single embedder/de-embedder and audio
processor
Crystal Vision Ltd., Lion Technology Park, Station Road East, Whittlesford, Cambridge, CB22 4WL, England.
E-mail: sales@crystalvision.tv
Website: www.crystalvision.tv
Tel: +44(0) 1223 497049
Fax: +44(0) 1223 497059

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  • Page 1 TANDEM-300 Single embedder/de-embedder and audio processor Crystal Vision Ltd., Lion Technology Park, Station Road East, Whittlesford, Cambridge, CB22 4WL, England. E-mail: sales@crystalvision.tv Website: www.crystalvision.tv Tel: +44(0) 1223 497049 Fax: +44(0) 1223 497059...

  • Page 2: Table Of Contents

    Crystal Vision TANDEM-300 User Manual R1.2 Contents Introduction     Audio and data processing     External reference 8  Handling ancillary data 8  SDI PLL function 8  Factory defaults 9  Monitoring 9  Rear connector options     Applications    ...
  • Page 3 Crystal Vision TANDEM-300 User Manual R1.2 The active control panel     Using card edge controls     Introduction     Main menus 34  The card edge display codes 35  TANDEM-300 display examples 36  Routing 36  Option cards fitted 36 ...
  • Page 4 Crystal Vision TANDEM-300 User Manual R1.2 Firmware version number 56  Installation     Rear module connections     Signal earthing     Using GPI outputs     DTB-AV GPI connections 67  FR1AV GPI connections 68  FR2AV GPI Connections 68  Monitoring Audio Outputs  ...

  • Page 5: Introduction

    Processor is based on the TANDEM-100/200 architecture to provide audio-processing functions for embedded, analogue and AES/EBU audio. TANDEM-300 accepts either a single or dual SDI inputs with or without embedded audio and may be equipped with up to two piggyback audio option cards to provide for analogue or digital external audio inputs or outputs.
  • Page 6 Statesman, a dedicated software application. TANDEM-300 has a single SDI output and two SDI inputs. Up to two audio option cards may be fitted in either of two positions. The terms Side 1 and Side 2 are used to describe the option card positions.
  • Page 7 A and B for Side 1 and Side 2 respectively. However, monitoring quality de-embedded audio is still output via the headphone socket and the rear connector – refer to the Monitoring section for further details. TANDEM-300 User Manual R1.2 14/02/2008...

  • Page 8: Audio And Data Processing

    (mono) de-embedded signals to any of the four channel outputs destined to be re- embedded in the SDI signal. Two de-embedders are provided to enable TANDEM-300 to work in either single or dual SDI input mode. In single SDI mode four channels may be de-embedded from two groups from SDI input ‘1’.

  • Page 9: External Reference

    SDI installation, and as it passes through most equipment in its path. To minimise this effect, TANDEM-300 has an SDI crystal controlled re-clocker which sets the output SDI signal to the same mean frequency as the input, but re-clocked by a crystal controlled Phase Locked Loop [PLL].

  • Page 10: Factory Defaults

    Always check that the appropriate groups are selected for embedding or de-embedding Note: after loading defaults (refer to Statesman ‘Audio Routing’ or section 6.4 for card edge controls). Monitoring TANDEM-300 is equipped with two monitoring outputs: • analogue headphone output • analogue or AES rear connector output The rear connector output is fed from a monitoring ‘bus’...

  • Page 11: Rear Connector Options

    1.2 Rear connector options TANDEM-300 fits into FR2AV 2U frame for up to 12 Crystal Vision modules, the FR1AV 1U frame for up to 6 Crystal Vision modules and the DTB-AV Desk top box for up to 2 Crystal Vision modules.

  • Page 12: Applications

    Crystal Vision Introduction 1.3 Applications TANDEM-300 is very flexible and a range of applications can be served depending on the option cards fitted and the configuration set. Applications include audio embedding from external analogue or digital audio sources, re-embedding from one or two SDI sources and de-embedding as analogue or digital audio sources.
  • Page 13 Monitoring quality audio can always be de-embedded and used locally even when no audio option cards are fitted. TANDEM-300 in Single SDI ‘Audio Bridge’ + External Audio mode As with the previous example, the ‘shuffled’ or routed audio can be further processed to correct for gain or phase problems.

  • Page 14: Data Packet Management

    (EAV) and the start of active video (SAV). A group is comprised of two AES/EBU stereo signals or four monaural channels. Each TANDEM-300 ‘side’ can de-embed up to four additional audio channels from one of the four groups of its SDI input stream and can embed four audio channels into one of four possible audio groups in the output SDI stream.

  • Page 15: Hanc Processing

    If ‘Mark for Deletion’, ‘Blank HANC’ are in place then EDH CRC values will no longer be valid. In this case, new EDH insert CRC values are calculated and inserted into the EDH data block in each TV field. TANDEM-300 User Manual R1.2 14/02/2008...

  • Page 16: Vertical Switching

    SMPTE recommendations with a switch-point gap. This allows TANDEM-300 to convert material from SONY formats to SMPTE. It is also possible to convert SMPTE to SONY format, however, in this case the de-embed mode should be placed in the special setting of SONY/SMPTE or ‘ALL’...

  • Page 17: Trading Process Speed For Robustness

    Crystal Vision Data packet management Trading process speed for robustness SONY and SMPTE embed/de-embed modes for the TANDEM-300: Embed modes Speed >> Robustness >> Card edge (Statesman) * * * * * * * * * SONY1 (Sony audio fifo min)
  • Page 18 SDI in to SDI out is 1.481µs (400 clock cycles at 270 MHz) with SDI PLL set to OFF. Selecting PLL ON will add a variable amount of delay between 0.6 and 8.9 microseconds, dependent on the severity of jitter and wander of the incoming 270 Mb/s SDI clock rate. TANDEM-300 User Manual R1.2 14/02/2008...

  • Page 19: Installing Statesman

    Running Statesman for the first time The Statesman PC Control System may be run from the Crystal Vision programs folder via the Start menu or by double-clicking on the Crystal Vision.exe file in the installed program directory. When the program runs it should automatically detect any statesman compatible modules in the connected frame or frames and display them in the main application left hand explorer-style window.

  • Page 20: Statesman Operation

    The two panes allow dual-control display of both TANDEM-300 circuit paths or ‘sides’, or two functions such as both embed and output routing can be shown for the same ‘side’.

  • Page 21: Selecting Single Or Dual-Input

    Statesman operation 4.1 Selecting single or dual-input TANDEM-300 can be configured for ‘Single SDI input’ use or ‘Dual SDI input use’. Single SDI mode allows up to 8 monaural or 4 stereo audio sources to be routed from both of TANDEM-300’s de-embedders (‘A’ and ‘B’) for up to two audio groups from TANDEM-300’s SDI 1 input.

  • Page 22: Audio Routing

    Available external sources and destinations are entirely dependent on the option cards fitted. TANDEM-300 in mode 1 If TANDEM-300 firmware or sub-boards have been changed it is recommended to start Tip: by loading valid default settings for the entire routing table held in TANDEM’s non- volatile memory.
  • Page 23 Statesman operation Selecting audio groups for de-embedding In Single SDI i/p mode TANDEM-300 can de-embed any audio channel from any two incoming audio groups from the SDI 1 stream. In Dual SDI i/p mode TANDEM-300 can de-embed any audio channel from any one incoming audio groups from the SDI 1 stream, and any audio channel from any one incoming audio groups from the SDI 2 stream.
  • Page 24 SMPTE audio fifo mid – (SMPTE 2) medium processing delay • SMPTE audio fifo max – (SMPTE 3) large processing delay • SMPTE – (SMPTE 4) slowest and most robust processing Embedding modes are discussed in-depth in the Data packet management chapter. TANDEM-300 User Manual R1.2 14/02/2008...
  • Page 25 Using the stereo to mono converters TANDEM-300 has 8 built in stereo to mono converters that may be applied independently to each adjacent pair of the embedding router inputs. If ‘Mono in in+1’ is...
  • Page 26 To edit a source or destination name click on the Input or Output text, and a Rename menu will appear. Enter the desired names in the box provided and click OK. The new name will be stored in the host PC, and appear each time Statesman is used. TANDEM-300 User Manual R1.2 14/02/2008...

  • Page 27: Setting Audio Delay

    The HANC error indicator will illuminate if there is no further room in the HANC space to add another audio group. TANDEM-300 should not be set to embed any further groups unless the option to blank the HANC space before embedding is selected.

  • Page 28: Adjusting Channel Gains

    To clear ganged gain controls and restore them to individual use, select ‘Clear Ganged Controls’ in the Tools menu. Preset Controls The Preset Controls menu provides access to setup presets, monitoring assignments and SDI crystal PLL embed reference selection. Preset Controls menu TANDEM-300 User Manual R1.2 14/02/2008...

  • Page 29: Sdi Crystal Control

    Phase Locked Loop [PLL], to produce extremely low jitter in the SDI output. The PLL is situated in the input SDI path prior to processing, so all of the functions of that side, as well as the SDI output, benefit. TANDEM-300 User Manual R1.2 14/02/2008...

  • Page 30: Recalling Defaults

    Presets may be re-called, 'edited' by changing settings and then re-saved until the required routing has been obtained. TANDEM-300 applications are unlikely to require simple one-to-one routing and Audio Group selections for de-embedders ‘A’ & ‘B', and for embedder ‘C’ will almost certainly need to be set differently to the default settings.
  • Page 31 TANDEM card. TANDEM-300 switches the AES monitor bus to monitor de-embedder outputs when de- embedders are on and input card outputs when de-embedders are off. If there are no input cards then digital silence will be output when de-embedders are off.

  • Page 32: Miscellaneous

    For example changing the error masking to 0 may be useful when attempting to listen to faults in the input data stream, or if the faults are so bad that the error masking simply mutes the channel. TANDEM-300 User Manual R1.2 14/02/2008...

  • Page 33: Using The Toolkit

    Using the Toolkit The Toolkit, accessed from the Audio Delay menu, provides comprehensive error reporting and status information. TANDEM-300 Toolkit Refer to the Trouble Shooting chapter for more information on the Toolkit. TANDEM-300 User Manual R1.2 14/02/2008...

  • Page 34: The Active Control Panel

    The active control panel 5 The active control panel The Crystal Vision active control panel is available as an integral part of the FP2-LF front door for the FR2AV 2U frame, the FR1AV frame, and the DTBAV desktop box or as a remote panel.

  • Page 35: Using Card Edge Controls

    6 Using card edge controls 6.1 Introduction Once the start-up initialisation procedure is complete, the TANDEM-300 card can be controlled or configured from the card edge or the Statesman PC interface. This chapter will concentrate on the card edge controls.

  • Page 36: The Card Edge Display Codes

    De-embedded audio source on side 2 Embedded audio destination on side 1 Embedded audio destination on side 2 Not available with TANDEM-300 Option card audio source on side 1 Option card must be AIP2, DIP2 or RS4 Option card audio source on side 2...

  • Page 37: Tandem-300 Display Examples

    This display indicates the presence or absence of a serial digital video (SDI) signal on each side. A serial digital video (SDI) signal is not present on side 1 whilst an SDI signal is present on side 2. TANDEM-300 does not support an embedder on Side 2. Note: TANDEM-300 User Manual R1.2 14/02/2008...

  • Page 38: Card Edge Status Menus

    RS4: RS4 option card For the above menus, the display is split between sides 1 and 2. The five left-most Note: characters refer to side 1 and the five right-most characters refer to side 2. TANDEM-300 User Manual R1.2 14/02/2008...

  • Page 39: Status/Config Menus

    SD 1 embed audio C=Agroup=n, where n is -(no group) or 1,2,3,4. ADJ=n group Shaft encoder changes value of n SD 2 embed audio Not supported by TANDEM-300 ADJ=n group Audio bus settings AUDbus=OFF, ON or AUTO. Shaft encoder only ADJ= for audio monitor sets ON/OFF.

  • Page 40: Ancillary Data Status

    The Input and Output status information used mainly for trouble shooting is obtained with MENU DIL, lever 7 ON (DOWN), all other levers UP (OFF). Display Comments De-embedding status See Problem Solving for a more detailed explanation of the status reports available General status Embedding status TANDEM-300 User Manual R1.2 14/02/2008...

  • Page 41: Selecting Default Routing

    Recalling any preset 0~7 will again reload one-to-one audio routing, but without delay. Presets may be re-called, 'edited' by changing settings and then re-saved until the required routing has been obtained. TANDEM-300 applications are unlikely to require simple one- to-one routing and Audio Group selections for de-embedders ‘A’ & ‘B’, and for embedder ‘C’...

  • Page 42: Audio Routing

    • Select appropriate groups for de-embedding and embedding • Select appropriate sources and destinations If TANDEM-300 firmware or sub-boards have been changed it is recommended to start Tip: by loading valid default settings for the entire routing table held in TANDEM’s non- volatile memory.
  • Page 43 Always set embed or de-embed functions to unassigned when NOT in use (eg Tip: A=Agroup-). The ‘-’ sign will disable auxiliary functions such as ‘Marked for Deletion’ and will help avoid invalid operations or unexpected results. TANDEM-300 User Manual R1.2 14/02/2008...

  • Page 44: Selecting Sources And Destinations

    Delay can only be associated with embed routing. It is not possible to assign delay in a path that involves output routing to external audio outputs. TANDEM-300 User Manual R1.2 14/02/2008...
  • Page 45 An input on the digital sub-board on side 1 is embedded into the SDI stream on side 1 after delay and phase inversion Example: G1 d/ C3 Channel 1 is selected from the source, delayed (but not available) and phase inverted before final routing to channel 3 on the destination embedder. TANDEM-300 User Manual R1.2 14/02/2008...

  • Page 46: Setting Audio Delays And Silence Detect Delay

    The values for audio delay for embedder channels C 1+2 and C3+4 are entered into the TANDEM-300 database the moment the ADJ shaft encoder is turned. This has been provided to allow delay values to be updated as soon as the shaft encoder is altered to ease the task of setting audio delay empirically.

  • Page 47: Setting Audio Gains

    Setting audio gains Audio gain may be set independently for each of the four audio channels leaving the TANDEM-300 embedding router. The gain is variable from zero (mute) to eight times unity gain (799%). The Audio Gain menu is obtained by setting MENU levers 5 and 6 both ON (DOWN) and all other levers UP or OFF.

  • Page 48: Audio Monitoring

    Audio monitoring is further discussed in section 10.3. 6.7 Enabling/disabling GPI inputs The GPI inputs can be used to recall TANDEM-300 setups that have been stored previously. This recall function can be disabled from the card edge. Ensure that all MENU DIL switch levers are UP or OFF and the SEL switch is in position F.

  • Page 49: Using Presets

    Presets cannot be saved or recalled from the card edge unless GPIs are disabled. This is Note: done to avoid the possibility of GPI inputs causing preset memory data to re-configure TANDEM-300 at the same time as presets are being updated. TANDEM-300 User Manual R1.2 14/02/2008...

  • Page 50: Data Packet Management Settings

    The menu is obtained with MENU DIL, lever 5 ON (DOWN), all other levers UP (OFF) and the SEL switch in position A for side 1 and B for side 2. Turn the shaft encoder to select between ‘SDx blank’ or ‘SDx noblnk’, where x is the TANDEM-300 side 1 or 2. Display...

  • Page 51: Viewing Ancillary Data Status

    Audio Group 1 and EDH only present. SDI -23-d- Audio Groups 2, 3 and ‘Marked for Deletion’ present. A much wider range of Demux and Mux status reporting, including HANC status, is Tip: discussed in Chapter 6, Problem solving. TANDEM-300 User Manual R1.2 14/02/2008...

  • Page 52: Error Handling

    SMPTE recommendations with a switch-point gap. This allows TANDEM-300 to convert material from SONY formats to SMPTE. It is also possible to convert SMPTE to SONY format, however, in this case the de-embed mode should be placed in the special setting of ‘ALL’...

  • Page 53: Setting The Stereo/Dual Mono Status Flag

    SD1E_XXXX are available: SONY1, SONY2, SONY3, SONY4, SMPTE1, SMPTE2, SMPTE3, SMPTE4 SD2D_XXXX or Not used by TANDEM-300 ADJ=XXXX SD2F_XXXX Please refer to the ‘Data packet management’ chapter for details of HANC processing Note: and embedding formats. 6.10 Setting the stereo/dual mono status flag Use this setting to control the ‘stereo’...

  • Page 54: Adjusting Aes/Ebu Output Phase

    SDI audio data will have been locked to the station master video source, so that the 48kHz sample rate and AES word rate are both considered synchronous with the video signal. TANDEM-300 User Manual R1.2 14/02/2008...

  • Page 55: Assigning Gpi Outputs

    It will be ignored if set to ‘mask’ Secondary AES input loss AES reference loss It will be ignored if set to ‘mask’ Silence detect delay is not applicable to any of the above alarms Note: TANDEM-300 User Manual R1.2 14/02/2008...
  • Page 56 ‘flag’ is selected. If an ‘input missing’ flag is effectively turned off by the ‘inmsk’ or ‘rfmsk’ setting it will also be ignored in the ‘Auto’ menu (all menu levers ON/UP, SEL=0) as an error condition. TANDEM-300 User Manual R1.2 14/02/2008...

  • Page 57: Selecting The Pll Mode

    PLL Off, 1 or 2 Select SDI PLL mode Select the PLL mode from Off or Sdi 1 (Sdi 2 is not supported by TANDEM-300). An explanation of the PLL function may be found in the Introduction and the Note: appropriate mode section of the Statesman chapter.

  • Page 58: Installation

    Crystal Vision Installation 7 Installation TANDEM-300 may be fitted into three of the Crystal Vision range of rackframes: • FR2AV 2U frame for up to 12 TANDEMs or other single height Crystal Vision modules, • FR1AV 1U frame for up to 6 TANDEMs or other single height Crystal Vision modules •...
  • Page 59 The TANDEM card fits in the upper of the two slot positions for the RM06, RM07 and Note: RM36. No card is fitted in the lower slot. TANDEM-300 does not use SDI 2 OUT on any rear connector. TANDEM-300 User Manual R1.2 14/02/2008...
  • Page 60 2 in the second from the top and card 3 fits in the third from the top. No card is fitted in the lowest slot position. TANDEM-300 does not use SDI 2 OUT on any rear connector. For details of fitting rear connectors please refer to the appropriate frame manual.

  • Page 61: Rear Module Connections

    The monitoring connections are the same for all fitted option cards. The RMO4 rear module allows cards to be placed in all 12 frame slots. AES/EBU monitor outputs are unbalanced. SD 1 denotes ‘side 1’, SD 2 denotes ‘side 2’. Note: TANDEM-300 User Manual R1.2 14/02/2008...
  • Page 62 GPI 5 GPI 2 GPI 4 GPI 6 The monitoring connections are the same for all fitted option cards. The RM06 and RM07 rear modules allow cards to be placed in frame slots 1,3,5,7,9 and TANDEM-300 User Manual R1.2 14/02/2008...
  • Page 63 RM05 pin-out The RM05 upper and lower hi-density 26 way ‘D’ female sockets are assigned pin-out for three TANDEM-300 cards for each fitted audio option card as follows: RM05 – upper hi-density 26 way ‘D’ female connector – Card 1...
  • Page 64 Crystal Vision Installation The second TANDEM-300 card uses pins 19 to 26 of both the upper and lower hi-density 26 way ‘D’ female connectors. RM05 – upper hi-density 26 way ‘D’ female connector – Card 2 AIP2/AOP2 DIP2/DIP2RS DOP2-110 DOP2-75...
  • Page 65 RM36 uses a DIN 41612 connector in place of the D-type connector found on the RM06. Connection SDI 1 SDI 2 SDI OUT 1A SDI OUT 1B SDI OUT 2A SDI OUT 2B TANDEM-300 User Manual R1.2 14/02/2008...
  • Page 66 No Connection c1-3, c31-32, a8-15, a22-32 The monitoring connections are the same for all fitted option cards. Note: Use RM36 with DIN41612 female connector with solder lugs, which can be purchased from Harting (part number 09-03-264-6823). TANDEM-300 User Manual R1.2 14/02/2008...

  • Page 67: Signal Earthing

    Component Signal low (screen) Chassis ground 1µF capacitor + 10K ohm resistor AES1 – , AES2 – PCB GND Notes: Video and audio output cable screens are normally hard-wired directly to local chassis ground. TANDEM-300 User Manual R1.2 14/02/2008...

  • Page 68: Using Gpi Outputs

    GPI lines ‘a’ to ‘f’ of each TANDEM card connect to the rear remote connector as follows: Slot no. ‘a’ pin ‘b’ pin ‘c’ pin ‘d’ pin ‘e’ pin ‘f’ pin Remote connector is 15 way normal density D-type socket. Frame ground is pin 15. Note: TANDEM-300 User Manual R1.2 14/02/2008...

  • Page 69: Fr1Av Gpi Connections

    Note: and frame ground is pin 2 in each case. Remote (rem) 2 and Remote (rem) 4 are 26 way high density ‘D’ type male plugs and frame ground is pin 6 in each case. TANDEM-300 User Manual R1.2 14/02/2008...

  • Page 70: Monitoring Audio Outputs

    Multiple audio signals could cause the audio to be attenuated and possibly distorted. Select Audio Bus ON for the required TANDEM output, and Audio Bus OFF for the other two TANDEM cards sharing the same rear module and monitoring outputs. TANDEM-300 User Manual R1.2 14/02/2008...

  • Page 71: Using Monitoring Outputs

    Mode 3, as RS4 cards can not receive any external signal inputs. A number of TANDEM-100, TANDEM-300 and Demon modules may be wired to a shared pair of active loudspeakers. Audio levels to be monitored via the analogue bus or using headphones should not exceed +10 VU (-8 dBFS) or overload distortion may occur.

  • Page 72: Fitting Audio Sub-Modules

    • push the sub-module in place firmly taking care not to bend any pins • fit the retaining fibre washers, internal serrated washers and nuts to the two retaining screws Removal is the reverse of the above procedure. TANDEM-300 User Manual R1.2 14/02/2008...

  • Page 73: Sub-Module Link Settings

    Set channel 1 with JL4/RV4, channel 2 with JL2/RV2, channel 3 with JL1/RV1 and channel 4 with JL3/RV3. Take care to note the adjustment and channel numbering on this sub-board. JL 1 ~ 4 CRYSTAL VISION LTD < 24 dBu Aip LP > 18 dBu TANDEM-300 User Manual R1.2 14/02/2008...
  • Page 74 I/P (external reference – lower 2 pins). Link jumper JL1 is provided to select the external reference input, which is always fed via a ‘D’ connector, between 110 Ohm (upper 2 pins), HiZ (balanced – centre pin only) or 75 Ohm (unbalanced – lower 2 pins). TANDEM-300 User Manual R1.2 14/02/2008...
  • Page 75 Link jumpers are provided to select between 110 Ohm (upper 2 pins) , HiZ (balanced – centre pins only) or 75 Ohm (unbalanced – lower 2 pins). TANDEM-300 User Manual R1.2 14/02/2008...
  • Page 76 Balanced outputs require the use of rear modules with a ‘D’ type connector and Note: unbalanced outputs are for use with BNCs. HiZ is achieved by removing termination jumpers – they can be parked for safe keeping by replacing them using only one pin. TANDEM-300 User Manual R1.2 14/02/2008...
  • Page 77 Set channel 1 with PL2/RV2, channel 2 with PL1/RV1, channel 3 with PL4/RV4 and channel 4 with PL3/RV3. Take care to note the adjustment and channel numbering on this sub-board. HD-AIP2 TANDEM-300 User Manual R1.2 14/02/2008...
  • Page 78 – lower 2 pins). Link jumper JL3 is provided to select the external reference input, which is always fed via a ‘D’ connector, between 110 Ohm (upper 2 pins), HiZ (balanced – centre pin only) or 75 Ohm (unbalanced – lower 2 pins). TANDEM-300 User Manual R1.2 14/02/2008...
  • Page 79 48 kHz inputs, and other sample rate inputs such as 44.1 kHz and 96 kHz. The signal output from the DIP2-RS to the TANDEM-300 is at 48 kHz derived from the video content of the SDI signal into which it is to be embedded.

  • Page 80: Problem Solving

    No output sub-pcb fitted PCBs swap! Input and output pcbs have been swapped L<->R Does not affect TANDEM-300 AIP not B Switches? More than one menu switch in the DOWN position No DC-DC No dc-dc converter fitted (when analogue i/o) TANDEM-300 User Manual R1.2...

  • Page 81: Statesman Error Reporting

    Mux ‘C’ errors indicate non operational status for that embedder, such as lack of HANC space [HANC blanking may cure that], or some other error settings or application error Card–edge warnings do not appear within Statesman. Note: TANDEM-300 User Manual R1.2 14/02/2008...

  • Page 82: Sample Problems And Their Solution

    Check that the embedded audio of SDI 1 AND SDI 2 is synchronous with the same source as the video content of both SDI signals. TANDEM-300 cannot process asynchronous sources, though time offset is allowed.

  • Page 83: Card Edge Trouble Shooting Menus

    There are two general formats for these status reports. If possible the status for each TANDEM-300 side function is shown in one menu display. If there is insufficient room in the display for both sides, two SEL menus are used. A couple of examples will illustrate the formats used.
  • Page 84 ‘blank’ space in HANC of at least 56 contiguous words. Example: HANC_ni_Ok, SDI1 is not present but SDI2 has a normal HANC TANDEM-300 will attempt to correct some classes of error but in severe cases the audio Note: may be muted.
  • Page 85 Example: Vd_6LC__ni, SDI 1 is 625 with significant Luminance and Chrominance content, but SDI2 is absent. The continued presence of ‘x’ values for Chrominance or Luminance may indicate an Note: error condition, such as no picture or lack of colour. TANDEM-300 User Manual R1.2 14/02/2008...
  • Page 86 Mx_Err indicates that data could be damaged Example: C=2_1-34_O, Audio Group 2 selected and Audio Groups 1, 3 and 4 present at C embedder input, Other data present D=n_1234dO Not used by TANDEM-300 or D=n_Mx_Err Mx_xx_yy SDI1 Mux Output Modes Codes: Ctg, Ovr,...

  • Page 87: Control Cross Reference

    0-15 save / recall 3 only down 0 - 1 display mode 6.14 SDI PLL mode 6.13 3 - F Not used by TANDEM-300 6.15/16 4 only down 0 - F configure audio routing 5 only down 0, 1 select error handling level...

  • Page 88: Specification

    SDI 270 Mb/s clock rate. Automatic selection of SMPTE or SONY formats or manual selection De-embedding format Embedding formats Operator selection of enhanced SMPTE or SONY formats Standard selection 525/625 automatic TANDEM-300 User Manual R1.2 14/02/2008...
  • Page 89 -112 dB @ 1kHz, -98 dB @ 20 kHz, rms., typ. DIP2: Dual digital audio input sub-module Audio input 2 x 20 bit stereo pairs. AES3 110 Ohm or HiZ (balanced) D Type, or AES3-id (unbalanced) 75 Ohm BNC. Set by on-board links TANDEM-300 User Manual R1.2 14/02/2008...
  • Page 90 Each of the two AES signal outputs has a second buffered output, which may be available dependant on the RM module fitted. Reference Available instead of 2 buffered output on some rear connector modules. Link selected May be AES reference or Word clock – link select TANDEM-300 User Manual R1.2 14/02/2008...

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