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TANDEM 320

3G/HD/SD dual channel

AES/analogue audio embedder/de-

embedder

Crystal Vision Ltd.,

Lion Technology Park, Station Road East, Whittlesford, Cambridge, CB22 4WL, England.

Tel: +44(0) 1223 497049 Fax: +44(0) 1223 497059 [email protected] www.crystalvision.tv

Содержание Indigo TANDEM 320

Страница 1: ...annel AES analogue audio embedder de embedder 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 crystalvision tv ...

Страница 2: ...NC connections 11 26 way D Type Audio Connections 11 Rear module connections with RM72 13 BNC Connections 13 4 General Purpose Interface 14 Introduction 14 Alarms 16 2U frame GPI connections 16 1U frame GPI connections 17 Indigo DT desk top box GPI connections 17 5 Control and Status monitoring 18 Card edge controls 18 Card edge buttons 18 Card edge rotary control 18 Reading card edge LEDs 19 Navi...

Страница 3: ...Gain 34 A B User Audio Delay Value 35 A B DeEmbedded Audio Delay 35 A B Discrete AIP AES Input Audio Delay 36 A B AES I O Configure 36 Audio Router 37 A B Embedder Router 37 A B Discrete AES Output Router 38 A B Discrete Analog Output Router 40 A B Mute Group Enable 41 Presets Resets GPI Os 42 Presets 42 Resets 43 A B Silence Alarm Delay 43 A B GPO Alarms 44 7 Troubleshooting 46 Card edge monitori...

Страница 4: ...53 De embedded Input 53 AES Audio Input 53 Audio Delay 54 De embedded Audio Delay 54 AES Input Dly 54 Audio Delay 54 Audio Gain 55 Channel Gain 55 Embedder Router 56 OP Chs 56 Embed Mute 57 AOP Output Router 57 Audio Op Channels 57 Audio Op Mutes 58 AES Output Router 58 Audio Op Channels 58 Diop Mutes 59 GPO 59 GPO5 GPO6 59 Presets and Reset 60 Preset 60 Board Reset 61 TANDEM 320 User Manual R1 3 ...

Страница 5: ...1 Block diagram updated on page 5 19 03 14 Revision 2 Clarified GPI section Added VisionWeb Moved Stateman info to Appendix 14 11 17 Revision 3 Added note about removal of card edge control in 2018 11 07 19 TANDEM 320 User Manual R1 3 4 11 July 2019 ...

Страница 6: ...to provide the desired mixture of analogue and AES inputs and outputs see section Input and output piggyback boards for legal combinations The main features are as follows Use with any source works with 3Gb s HD and SD Supports the following video standards 625 525 720p50 720p59 94 1080i50 1080i59 94 1080p50 1080p59 94 1080psf23 98 1080psf24 Versatile audio will de embed and embed up to four audio...

Страница 7: ...put piggyback and de embedded sources 16 channels are passed to audio processing blocks where gain and delay adjustments are made after re sampling Dolby E encoded signals bypass the audio processing block The output of the audio processing block is an input to two independent routers which feed the optional plug in output piggyback and the embedding block as mono channels or stereo pairs The vide...

Страница 8: ... are PL2 5 all other links should be left in the position shown in the above picture PL2 5 set whether the board s GPI inputs are used as GPIs or as an extra serial I O port Link Towards front of board or Up Towards the rear of board or Down J1 JTAG bypassed factory set do not alter J9 Debug mode Normal mode factory set do not alter PL2 GPI1 Input GPI1 GPI1 Input RS422 Rx PL3 GPI2 Input GPI2 GPI2 ...

Страница 9: ...ns FRONT Video Ch A none DIOP4 3G AIP2 3G AOP2 DIOP4 DIOP4 DIOP4 3G AIP2 3G AIP2 3G AOP2 REAR Video Ch B none none none none DIOP4 3G AIP2 3G AOP2 3G AIP2 3G AOP2 3G AOP2 3G AIP2 Analogue Input This analogue module has four balanced audio inputs The links PL1 4 allow 0dBFS to be set to 18dBu to the right towards SK1 or 24dBu to the left towards SK2 3 The adjacent potentiometers RV1 4 are factory s...

Страница 10: ...tiometers P1 P4 are factory set and should NOT be adjusted Table showing links controlling the output gain of the 3G AOP2 channels DIOP4 AES I O This digital audio piggyback has four AES stereo pairs that are individually configured as inputs or outputs by software There are no links or user adjustments on this card 3G AOP2 Channel number Link number CH1 PL1 CH2 PL2 CH3 PL3 CH4 PL4 TANDEM 320 User...

Страница 11: ...th the component side of the module top most align the piggyback sockets carefully with the plugs and push firmly Insert the plastic rivets supplied with the fitting kit through the main board from the underside so they protrude through the piggyback board then push the rivet peg firmly to splay the end to lock the piggyback board in position Note The type of piggyback fitted determines the functi...

Страница 12: ... O on the 26 way high density D Type connector RM71 rear module connector Description RM71 12 per Indigo 2 frame Six per Indigo 1 frame Two per Indigo DT All frame slots can be used BNC connections BNC I O assignment HD SD IN 1 3G High Definition Standard Definition serial digital input channel A HD SD IN 2 3G High Definition Standard Definition serial digital input channel B HD SD OUT 1 3G High D...

Страница 13: ...AES3 6 7 Analogue audio 4 AES4 8 18 GND 9 Analogue audio 5 AES5 14 15 Analogue audio 6 AES6 10 Rear Video Ch B 11 Analogue audio 7 AES7 16 17 Analogue audio 8 AES8 12 13 GND 19 20 23 24 NC 21 22 25 26 RM71 audio I O connector wiring All audio balanced signals can be either input or output depending on I O module fitted TANDEM 320 User Manual R1 3 12 11 July 2019 ...

Страница 14: ...tion Standard Definition serial digital input channel A AES8 I O AES8 stereo pair 75 ohm input output AES4 I O AES4 stereo pair 75 ohm input output HD SD IN 2 3G High Definition Standard Definition serial digital input channel B HD SD OUT 1 3G High Definition Standard Definition serial digital output channel A HD SD OUT 2 3G High Definition Standard Definition serial digital output channel B AES6 ...

Страница 15: ...ulse mode Note Because the GPI inputs are sampled in the vertical interval it is recommended that in pulse mode the GPI should be asserted at least 2mS before the start of vertical sync to ensure stability and held active for at least 40mS See Presets in this manual for details of inverting the GPI preset logic Each General Purpose Interface GPI output has a 270Ω resistor in series with its output...

Страница 16: ...H L 11 L H L H 12 L H L L 13 L L H H 14 L L H L 15 L L L H 16 L L L L Binary coding of GPI inputs to recall preset configurations in level mode GPI Bit 8 Bit 4 Bit 2 Bit 1 Preset No change 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Not accessible in pulse mode Binary coding of GPI inputs to recall preset configurations in pulse mode TANDEM 320 User Manual R1 3 15 11 July 2019 ...

Страница 17: ... 4 max Alarms Table 2U frame GPI connections GPI lines a to f of each card connect to two of four rear remote connectors as follows Slot no a pin b pin c pin d pin e pin f pin 1 8 1 9 1 18 1 26 1 19 2 20 2 2 7 1 16 1 17 1 25 1 10 2 11 2 3 8 3 9 3 18 3 26 3 19 4 20 4 4 7 3 16 3 17 3 25 3 10 4 11 4 5 5 1 6 1 15 1 24 1 1 2 2 2 6 4 1 14 1 13 1 23 1 3 2 4 2 7 5 3 6 3 15 3 24 3 1 4 2 4 8 4 3 14 3 13 3 2...

Страница 18: ...n 15 Note The 5V output is protected by self resetting thermal fuses which limit the total output current available from Remotes 1 2 to approximately 1A Indigo DT desk top box GPI connections GPI lines a to f of each card connect to two rear remote connectors as follows Slot no a pin b pin c pin d pin e pin f pin 1 8 1 9 1 18 1 26 1 19 2 20 2 2 7 1 16 1 17 1 25 1 10 2 11 2 Table shows pin number r...

Страница 19: ... control information detailed below is only relevant for older versions of the product Card edge controls TANDEM 320 board edge Card edge buttons The two tactile push button switches allow the operator to navigate within the menu structure Button Function Normal state Up Action Down Up Menu Push to jump up a menu level or cancel a selection ENTER Select Action Push to select a menu and to action a...

Страница 20: ...Yellow Audio Group 1 present Ch A Audio Group 1 not present 8 G2 Yellow Audio Group 2 present Ch A Audio Group 2 not present 9 G1 Yellow Audio Group 1 present Ch B Audio Group 1 not present 10 G2 Yellow Audio Group 2 present Ch B Audio Group 2 not present Navigating card edge menus To access the card edge menu system proceed as follows Press the up arrow until a top menu category is reached Rotate...

Страница 21: ...esponds to the polling request together with its location number The location number consists of the frame number plus the card position in the frame Rotate the Shaft control to poll through the available cards Use the F2 soft key to toggle between the card s serial number and issue number with modification level Device menu showing TANDEM 320 in slot 1 01 In the example above the card displayed i...

Страница 22: ...selects network configuration menu F1 to F4 soft keys not currently used by TANDEM 320 HOME returns to top of TANDEM s menu structure ENTER accept current selection Up arrow used to move up through the menu structure Rotary control shaft encoder used to select sub menus or variable data Updating the display The values displayed on an active front panel are only updated when an adjustment is made a...

Страница 23: ...rmat Input Black Input A Audio Status Input Frozen Input Group Status Output Group Status Input A Front sub PCB Input A Front Sub Pcb Front Input B Video Status Video Input Input Present Input Format Input Black Input B Audio Status Input Frozen Input Group Status Output Group Status Input B Rear sub PCB Input B Rear Sub PCB Rear Audio Settings A Set DeEmbedded Audio DeEmbedded Ip Present Silent I...

Страница 24: ...y A AES Audio Delay only if DIOP4 fitted User Frame Present User Delay A Audio Delay Value User Delay PCM Audio 0 to 400mS A AES Configure only if DIOP4 fitted Front Rear Channel Pair Input Output B Set DeEmbedded Audio DeEmbedded Ip Present Silent Invert Dolby E B Set AES Mono Audio only Resample DIOP4 fitted Discrete Settings Present Silent Invert Dolby E Mono B Audio Gain Resample Select Channe...

Страница 25: ...ser Frame Present User Delay B Audio Delay Value User Delay PCM Audio 0 to 400mS B AES Configure only if DIOP4 fitted Front Rear Channel Pair Input Audio Output Router A Embedder Router Embedder Chan Present Take A Analogue Output Router only if 3G AOP2 fitted Analogue OP channels Take A AES Output Router only if DIOP4 fitted AES Output Chan Take A Mute Group Enable Embedder Mutes Ch 1 16 Embed Mu...

Страница 26: ...tput Chan Take B Mute Group Enable Embedder Mutes Ch 1 16 Embed Mute AES Output Mutes only if DIOP4 fitted Ch 1 to 8 Mute Output Enable Group 1 4 Presets Embedder Mode Resets GPIOs SMPTE Presets Sony Store Recall Preset Select Store Resets Recall Board Reset Default exc presets Default inc presets A GPO5 Alarms Status Asserted Video Video Missing Video Black Video Frozen De embed Missing Grp 1 Grp...

Страница 27: ... 4 C15 C16 AES Missing C1 C2 C3 C4 C5 C6 C7 C8 Silent C1 C2 C3 C4 C5 C6 C7 C8 Dolby E C1 C2 C3 C4 C5 C6 C7 C8 A Silence Alarm Delay Alarm Delay 0 127 secs B GPO6 Alarms Status Asserted Video Video Missing Video Black Video Frozen De embed Missing Grp 1 Grp 2 Grp 3 Grp 4 Silence Grp 1 C1 C2 Grp 1 C3 C4 Grp 2 C5 C6 Grp 2 C7 C8 Grp 3 C9 C10 Grp 3 C11 C12 Grp 4 C13 C14 Grp 4 C15 C16 TANDEM 320 User Ma...

Страница 28: ...C15 C16 AES Missing C1 C2 C3 C4 C5 C6 C7 C8 Silent C1 C2 C3 C4 C5 C6 C7 C8 Dolby E C1 C2 C3 C4 C5 C6 B Silence Alarm C7 C8 Delay Alarm Delay 0 127 secs The above menu structure is the means to access the various TANDEM 320 controls and status A more detailed description is in section Control Descriptions TANDEM 320 User Manual R1 3 27 11 July 2019 ...

Страница 29: ...tc similar to that available with the older Statesman PC software Accessing the Indigo Home page with a PC browser via the Ethernet connector of a Ethernet enabled frame will display a list of the cards fitted See Indigo Frame Manual for more details Indigo home page The example above shows a TANDEM 320 card fitted in slot one and the frame s power supply and status monitor in slots 13 and 14 Clic...

Страница 30: ...DELAY AUDIO DELAY VALUE AES CONFIGURE EMBEDDER ROUTER AES OUTPUT ROUTER AOP OUTPUT ROUTER MUTE GROUP ENABLES PRESETS RESETS GPO ALARMS SILENCE ALARM DELAY Note that the DISCRETE AOP OUTPUT ROUTER tab is only available whenever an 3G AOP2 piggyback is fitted If a DIOP4 piggyback is fitted instead the tab displayed becomes DISCRETE AES OUTPUT ROUTER Neither tab is shown if neither 3G AOP2 nor DIOP4 ...

Страница 31: ...s present Input Format Displays video standard of incoming video i e 1080i 50 1080p 50 720p 50 625 525 etc Input Black On if video input is permanently at black level Input Frozen On if video input is a permanent still frame Input A B Audio Status Displays presence of audio embedded in incoming and outgoing video signal TANDEM 320 User Manual R1 3 30 11 July 2019 ...

Страница 32: ...yback fitted in front position Front Displays type of piggyback in front position nearest handle i e DIOP4 3G AIP2 3G AOP2 or none This piggyback is used by input A only Input B Rear Sub PCB Displays type of piggyback fitted in rear position Rear Displays type of piggyback in rear position nearest edge connector i e DIOP4 3G AIP2 3G AOP2 or none This piggyback is used by Input B only TANDEM 320 Us...

Страница 33: ...On if the audio channel is silent i e consistently below the set threshold Invert Select to enable inversion of the de embedder output for the selected channel Dolby E On if the channel pair has Dolby E encoding Mono Select to mono the channel pair N B only the 1st channel of the stereo pair is converted to mono the 2nd channel is unchanged The mono output is gain corrected to maintain unity gain ...

Страница 34: ... Input Audio Monitor external analogue or AES input channel status invert channels detect Dolby E encoded channel pairs mono and resample stereo pairs Screen grab below shows DIOP4 in the front piggyback position with two AES stereo pairs present Present On when embedded channel detected Silent On if the audio channel is silent i e consistently below the set threshold Invert Select to enable inver...

Страница 35: ...ted A B Audio Gain Change the gain of the audio inputs by 18dB Gain 1 4 In total there are 24 audio gain controls one for each of the 16 channels of de embedded audio and eight channels of external audio The gain controls will give 18dB of gain relative to the input level up to the point where digital clipping will occur Channel Gain Select the group of channels to control The options available wi...

Страница 36: ...control selected A B DeEmbedded Audio Delay These controls are used to delay the de embedded audio with respect to the video and compensate for any small delay between the incoming video and audio signals Present On if the audio channel pair is present User Delay For each channel pair select to enable the variable delay set by the Audio Settings User Delay Value control For PCM signals this is 0 t...

Страница 37: ...dio Settings User Delay Value control For PCM signals this is 0 to 400mS A B AES I O Configure Configure the optional DIOP4 piggyback AES I O channels as input or output Front Rear Channel Pair Set the selected AES channel pair to be input or output A DIOP4 piggyback must be fitted in the front or rear positions to enable AES I O for input A or B Front channel pairs are used by input A and rear ch...

Страница 38: ...ls for selection will depend on the optional piggyback and sub boards fitted The screen grab below shows DIOP4 piggyback in the front position giving a potential of eight external AES inputs for input A If a 3G AIP2 piggyback was fitted then those analogue audio inputs would be shown instead of the AES inputs TANDEM 320 User Manual R1 3 37 11 July 2019 ...

Страница 39: ...he input and output will show a red circle which will change to green when the Take control is selected All cross points can be pre selected The screen grab above shows de embedded inputs C8 C14 pre selected to embedded channels C8 14 and front DIOP4 channels C1 and C2 pre selected to embedded channels C15 and C16 Take Switch all preselected crosspoints in one go Present On if audio channel is pre...

Страница 40: ...e routed to the AES output channels shown on the left hand side The screen grab above has a DIOP4 piggyback fitted in the front position configured as all outputs C1 8 Clicking on the intersection of the input and output will show a red circle which will change to green when the Take control is selected All crosspoints can be pre selected Take Switch all pre selected crosspoints in one go TANDEM 3...

Страница 41: ... crosspoints to be routed when the Take button is pressed red circles The inputs shown along the top of the matrix will be routed to the analogue output channels shown on the left and right hand side The screen grab above shows a 3G AOP2 piggyback in the rear position providing four analogue output channels Clicking on the intersection of the input and output initially shows a red circle which wil...

Страница 42: ...ted in the front position input A Embed Mutes Select to mute embedder output channels AES Output Mutes only if DIOP4 piggyback fitted Mute AES output audio AOP Output Mutes only if 3G AOP2 piggyback fitted Mute analogue audio outputs not shown above Output Enable Select to enable embedder output for that group Embedder Mode Select either SMPTE or Sony embedder format for SD video only TANDEM 320 U...

Страница 43: ...ating mode card status The presets are numbered 1 16 Preset select Store or recall TANDEM 320 s configuration to from one of 16 memory locations GPI Enable Select to recall previously saved presets via the external GPI port See page 13 for more information on GPIs GPI Level Select either low or high level to trigger the GPI recall GPI Trigger Select either level or edge to trigger GPI recall TANDE...

Страница 44: ... Default inc presets Reset the board to default settings and erase preset memories A B Silence Alarm Delay Set the period that a signal must be silent before asserting an alarm Silence Alarm Delay Set the period 0 to 127 seconds that a signal must be silent 63dBFS before asserting GPO5 or GPO6 alarms set to trigger on audio silence TANDEM 320 User Manual R1 3 43 11 July 2019 ...

Страница 45: ...ow Asserted On when alarm is asserted active Video Missing Black Frozen Select to assert alarm whenever the input video is missing black or frozen De embed group Missing Set to assert alarm whenever a de embedded group is missing De embed channel pair silent Dolby E Set to assert whenever a de embedded channel pair is silent 63dBFS for the period set by the Silence Delay control or is Dolby E enco...

Страница 46: ...r the period set by the Silence Delay control or is Dolby E encoded A DIOP4 piggyback must be fitted Analog Audio Silent Set to assert whenever an analogue audio channel pair is silent for the period set by the Silence Delay control or is Dolby E encoded A 3G AIP2 piggyback must be fitted TANDEM 320 User Manual R1 3 45 11 July 2019 ...

Страница 47: ...ing refer to the appropriate frame manual for detailed information There is no video output Check that a valid SDI input is present and that any cabling is intact The video output exhibits jitter Check that the input SDI stability is within normal limits The card no longer responds to card edge or front panel control Check that the card is seated correctly and that the Power OK LEDs are lit Check ...

Страница 48: ...mat auto selected Return loss 50Mhz to 1 5GHz 15dB Audio Up to four 24 bit stereo pairs or two analogue pairs per channel AES3 110 ohm or HiZ balanced D Type or AES3 id unbalanced 75 ohm BNC Synchronous 48kHz audio to video Outputs Video Two video outputs one for Ch A and one for Ch B Serial output 270Mb s to 2 970Gb s serial compliant to EBU 3267 E SMPTE 259 SMPTE 292 1 and SMPTE 424 425 A Output...

Страница 49: ...ndicate PSU rails present SDI input HD SD for both channels Input audio groups 1 and 2 present for both channels GPI inputs Number and type 4 x GPI inputs Recall of presets Active pull to ground pulled up to 5V through 7 kohm Pulse mode GPI to be asserted for min of 40mS and at least 2mS before vertical interval GPI outputs Number and type 2 x GPI outputs one per channel assignable to any of 35 al...

Страница 50: ...tes with each module in a frame through a Statesman capable front panel CPU or full active control panel Either of these must be fitted to allow Statesman control Statesman operation The initial view will show an Explorer style view of the connected frames and modules Double clicking on a module will enable the display of the main application menus The two large control panes shown in the upper an...

Страница 51: ...n the GUI i e STATUS CONTROL AUDIO INPUT AUDIO DELAY AUDIO GAIN EMBEDDER ROUTER AES OUTPUT ROUTER AOP OUTPUT ROUTER GPO PRESETS AND RESET Note that the AOP OUTPUT ROUTER tab is only available whenever an 3G AOP2 piggyback is fitted If a DIOP4 piggyback is fitted instead the tab displayed becomes AES OUTPUT ROUTER Neither tab is shown if neither 3G AOP2 nor DIOP4 piggybacks are fitted Each tab is s...

Страница 52: ... Status Input Present On when video input present Input Standard Shows input video standard e g 1080p50 Input Black On when input video is black level Input Frozen On when input video is frozen SubPcb Type Front SubPcb Type Type of piggyback PCB fitted in Ch A position i e DIOP4 Rear SubPcb Type Type of piggyback PCB fitted in Ch B position i e 3G AOP2 Input Group Status Group1 4 Present On when a...

Страница 53: ...C8 Select each of the DIOP4 board AES channel pairs to be individually configured as input or output N B The router configuration does NOT reflect the I O state of the DIOP4 piggyback Note also that if a rear DIOP4 piggyback was fitted for Ch B then the Control would refer to Rear C1 C2 etc Input Termination Balanced Select to configure the DIOP4 piggyback AES audio inputs to be 110 ohm balanced U...

Страница 54: ...he set threshold Invert Select to enable inversion of the de embedder output for the selected channel Dolby E On if the channel pair has Dolby E encoding Mono Select to mono the channel pair N B Only the 1st channel of the stereo pair is converted to mono the 2nd channel is unchanged The mono output is gain corrected to maintain unity gain Resample Select to enable resampling of the selected stere...

Страница 55: ...udio Delay AES Input Dly For each of the eight channel pairs de embedded from the input video signal For all AES channel pairs from optional DIOP4 piggybacks configured as inputs Present On if the audio channel pair is present User Delay Select to enable the variable delay 0 to 400mS from User Delay control for the selected channel pair at the output of the de embedder Audio Delay PCM Audio mS Use...

Страница 56: ...hannels Select the audio group of four to apply the gain controls to Gain1 4 Use these controls to set the audio gain by 18dB individually for each of the four channels of the group Select the group first and then adjust the gain Gain control is prior to the embedder and audio output option routers and can be applied to all available sources Cal audio Gain Select to return all channels to the cali...

Страница 57: ...uttons Preset the router condition by selecting the button at the intersection of the input and output channel Input selections are labelled at the bottom and output selections on the right The button will light dark red once selected and red once taken N B GUI example shows the first 16 input channels routed to the 16 output channels one to one Input front DIOP4 C4 is preset to be routed to outpu...

Страница 58: ...al audio output piggybacks Router selection buttons Preset the router condition by selecting the button at the intersection of the input and output channel Input selections are labelled at the bottom and output selections on the right The button will light dark red once selected and red once taken N B GUI example with a rear 3G AOP2 shows the first four input channels routed to the four output cha...

Страница 59: ... by selecting the button at the intersection of the input and output channel Input selections are labelled at the bottom and output selections on the right The button will light dark red once selected and red once taken N B GUI example with a single DIOP4 board fitted shows the first eight input channels routed to the eight output channels one to one Input C9 is preset to be routed to output front...

Страница 60: ...o Ch A conditions and GPO6 by video Ch B GPO5 GPO6 Set the various conditions that assert GPO5 and GPO6 Status On if GPO is asserted N B Visual indication of GPO6 status is provided on the board edge Video Select the input video conditions that assert the GPO Video Missing Video Black Video Frozen De Embed AES Set the conditions for the incoming de embedded audio signals or external AES input sign...

Страница 61: ...cluding operating mode card status The presets are numbered 1 16 Reset the board to factory default settings Preset Save or recall TANDEM 320 settings Preset Select Select which preset to store or recall Store Recall Store Save the setup in preset memory 1 16 Recall Recall the setup from preset memory 1 16 GPI Preset Recall GPI Enable Select to recall previously saved presets via the external GPI ...

Страница 62: ... 320 settings to default values Fact Res Exc Presets Reset the board to default settings but leave preset memories unaffected Fact Res Inc Presets Reset the board to default settings and erase preset memories TANDEM 320 User Manual R1 3 61 11 July 2019 ...

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