Panasonic AJ-SD755 Software specifications Protocol, Communication parameters

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RS-232C interface

Software specifications (Protocol)

1. Communication parameters

Communication	Asynchronous, full duplex
system

Communication	300/600/1200/2400/4800/9600
speed

Bit length	7bit/8 bit

Stop bit	1 bit/2 bit

Parity bit	NONE/ODD/EVEN

ACK code	ACK code returned/ACK code not returned
	<Note>
	The ACK code is what is returned from the
	VTR to the controller when data has been
	successfully sent from the controller.

The underlining indicates the factory settings.

Any changes to the settings can be made using the setup menu items listed below.

	Communication	Setup menu item
	parameter	Setup menu item
	parameter


	Communication	No.205 BAUD RATE
	speed

	Bit length	No.206 DATA LENGTH

	Stop bit	No.207 STOP BIT

	Parity bit	No.208 PARITY

	ACK code	No.209 RETURN ACK

2.Send format [controller (PC) 5 VTR]

$ Data format

[STX]	[command]	[:]	[data]			[ETX]
02h	XX XX XX	3Ah	XX	.....	XX	03h

20H<XX<7FH

(XX = ASCII code: symbols, numbers upper-case letters)

[command] :

Command identifier; a 3-byte identifier (ASCII code: symbols, numbers, upper-case letters) is sent as the command.

[ : ] :

This code serves as a delimiter between the command and data.

[data] :

Data (ASCII code: symbols, numbers, upper- case letters) can be added in the number of bytes required.

$ Outline of send procedure from controller

1The send command starts with STX (start of text = 02h).

The command is then identified by COMMAND which follows and the data is added as required. The format ends with ETX (end of text = 03h).

2When a different command is to be sent, a response is awaited from the VTR, and then the command is sent. (See page 71.)

3If STX is sent again before ETX is sent, the receive data buffer inside the VTR is cleared. A command error is returned to the controller, and the data is newly processed with STX which was received again at the head.

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Contents Model No. AJ- P Operating Instructions$ this Apparatus Must be Grounded Introduction ContentsFeatures Front panel Parts and their functionsDvcpro VideoREC button Play buttonStop button FF buttonRecorder PlayerJOG ShtlReview PreviewVAR UnityOFF PresetRegen EXTDisplay panel Edit REC RECREC INH Rear panel IN/OUTOUT Analog Audio OUT connectors Parallel Remote connectorCmonitor OUT connectors = Signal GND terminalSource machine ConnectionsRecorder OFFConnections with editing controller AV monitor Reference signal GeneratorRecorder AV monitor Editing controllerConsumer-use DV and Dvcam cassettes TapesCassettes Cassette sizeJog/Shuttle Jog modePreroll Manual editingAssemble InsertWhen using the AJ-SD755 as the recorder Switch settings and adjustmentsWhen using the AJ-SD755 as the player Automatic editing deck-to-deckSelecting the editing mode AssemMatch frame processing function Checking and previewing edit points How to calculate the durationRe-registering an edit point Modifying edit pointsPost-rolling Executing and reviewing automatic editingRetry function Auto tag function recorder sideAudio split editing Between the video in and OUT points $ Duration displayBetween the audio in and OUT points Match frame processing system$ Selecting the variable memory mode Variable memory editing operation procedure$ Releasing variable memory mode Variable memory editingSetup initial settings Changing the settingsSetting and releasing the lock mode Setup menusChanging the file SystemLock mode can be set Counter display Lock mode can be setLoading user files Menu screen Load/saveMenu screen Saving user filesSystem menu Offset SET UP LevelSYS SC/H LocalUser menu Basic Basic User menuOperation Memory stop function Lamp REC INHEject SW INHInterface Edit AUD Edit OUT AUD EditAuto Entry CF ADJ SELTape Protect Time Code Vitc OUT RUN ModeSBC VauxESR Mode YC SEP ModeCCR Mode INT SGCmpst SetupCUT Cmpst OUTUmid GEN INTUmid POS CH2 in LV CH1 in LVCH1 OUT LV CH2 OUT LVUser menu Audio REC PT Mute DV PB ATTDV Output REF LevelADD Line BlankREC LINE1 REC LINE2Teletext Number of lines which can be set for TeletextDET REC LINE13Menu Time code/user bit Setting the internal time codeTime code User bitSetting the external time code LTCVitc Superimpose screen Operation modeCharacters displayed Display positionExternal synchronization of video output signals Video output signals and servo reference signalREF Video input signal Internal synchronizationServo reference signal Audio signal a Audio V fade functionFade is performed instantaneously to eliminate the noise Printed circuit board Audio recording channel and monitor output selectionAudio recording channel Monitor output channelRack mounting Rack-mounting adaptorsStandard rack Fasten it to the rack with set screws Maintenance Video head cleaningCondensation Attaching the dust coverDiag menu Error messages$ Displaying the Diag menu $ Warning information display$ Umid information display $ Displaying the Hours Meter informationUnknown SIG High Error RateInvalid Video SIG Invalid Audio SIGError messages Torque VTR Stop Error Tension VTR Stop ErrorReel Rota VTR Stop TOO Fast ReelExternal interface specifications Hardware specificationsConnector specifications RS-232C interfaceSoftware specifications Protocol Communication parametersSend format controller PC 5 VTR Error code table $ When the communication has terminated normallyReturn format VTR 5 controller PC $ Commands relating to operation control Command tableCTL/TC Data STX QCD ETX $ Commands relating to inquiriesRequest Status STX QOP ETXSource Reference signal Generator Precautions to observe when using the Sdti signalsSdti signals Sdti interfaceConnector signals Remote IN/OUTRemote OUT SUB 25-pin crossover cable supported RS-232CSpecifications Other Input/Output Connectors Eastern Zone Panasonic Broadcast & Television Systems CompanyWestern Zone Technical Support