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4407

Digital Audio Sample Rate Converter

Technical Manual

15

4.2

Electrical parameters

Normal electrical parameters are:

·

RS485

·

8 bit data

·

one stop

·

even parity

·

38.4kbaud

Normal transmitters used must be capable of running in parallel i.e. more than one
transmitter enabled, RS485 compatible. The group poll uses this feature.

4.3

Four wire and two wire operation

The 4407 is a full duplex four wire device. However due to the workings of the multi-
drop communication protocol where the controller initiates data flows, the 4407 can
be used as a two wire device with the following wiring modifications:

1

9

10

3

TX+

TX-

X+

4407 CONTROL CONNECTOR

FOUR WIRE FULL DUPLEX

RX-

RX+

X-

TWO WIRE MULTI-

DROP SYSTEM

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Содержание 4407

Страница 1: ...te 10 3 3 Setting local remote gain modes 11 3 4 Setting audio modify options 12 4 RS485 serial control 13 4 1 Setting the multi drop address 14 4 2 Electrical parameters 15 4 3 Four wire and two wire operation 15 4 4 The link layer protocol 16 Multi drop headers 4 5 Message layer 16 Bytes transmitted 4 6 Protocol examples 19 5 Status monitoring 21 6 Trouble shooting 22 7 Specification 25 8 Orderi...

Страница 2: ...4407 2 Issue 2 ...

Страница 3: ...t channels and digital silence Remote control of gain and fader response is available through a dedicated RS484 serial port The module may be used in the 1050 3U and 1051 1U ICON modular product rackframes with a choice of balanced or unbalanced rear connectors Characteristics of the 4407 are eight outputs AES3 or SPDIF inputs sample rate synchronising for asynchronous 32kHz 44 1kHz or 48kHz sourc...

Страница 4: ...ample rate converter DC POWER AND COSMOS STATUS DATA POWER REG STATUS MON DIGITAL AUDIO REFERENCE AES 3 INPUT 8 AES OUTPUTS Receiver and Regenerator Synchroniser Rate Converter Reference Processor Reference error Reference error Input error ...

Страница 5: ... the manual RSF2 POLL POWER P AUDIO LOCK AUDIO LOCK AUDIO LOCK 159 100 97 92 89 86 83 80 76 73 70 67 64 59 56 53 162 167 170 173 176 179 186 189 192 195 198 203 206 1 2 3 4 1 1 14 17 20 23 28 31 34 37 40 47 50 154 151 145 142 139 136 133 128 125 119 122 116 113 107 SW1 1 SW1 2 SW1 3 SW1 4 SW2 1 SW2 RV1 SW1 SW2 2 SW2 3 SW2 4 0 0 1 1 4400_S1 FOR 5287 ONLY 2 10 PL2 INPUT A UNBAL 75R BRIDGE BAL 110R P...

Страница 6: ...anels have a 15 way D connector for control and AES balanced input Control Pin outs Pin Function Pin Function 1 RS485 TX 9 RS485 TX 2 GND 10 RS485 RX 3 RS485 RX 11 GND 4 FADER V 12 FADER WIPER 5 GND 13 6 14 GND 7 N C 15 N C 8 GND INTERNAL CONNECTION DO NOT USE External fader Fader V Wiper Fader 0V GND 10K Ohms AES OUT CONTROL A E S O U T P U T S AES REF IN AES IN 1 15 The K4407 3U rear panel for u...

Страница 7: ...nction 1 O P1 14 O P5 2 O P1 15 O P5 3 GND 16 GND 4 O P2 17 O P6 5 O P2 18 O P6 6 AES REF IN 19 N C 7 AES REF IN 20 N C 8 GND 21 O P7 9 O P3 22 O P 10 O P3 23 GND 11 GND 24 O P8 12 O P4 25 O P8 13 O P4 Control Pin outs Pin Function Pin Function 1 RS485 TX 9 RS485 TX 2 GND 10 RS485 RX 3 RS485 RX 11 GND 4 FADER V 12 FADER WIPER 5 GND 13 AES I P 6 AES I P 14 GND 7 N C 15 N C 8 GND ...

Страница 8: ... the main 4407 module The available options are explained in the following table AES input termination modes PL3 settings 4407 Description UNBAL Use for unbalanced signal requires K4407 3U rear panel 75R Use with unbalanced input to terminate signal with 75W BRIDGE Selects high impedance termination Hi Z BAL Use with balanced input requires K4407 2B rear panel 110R Use with balanced inputs to term...

Страница 9: ...ith balanced inputs to terminate signal with 110W 5288 termination jumpers The termination impedance for the RS485 communications ports are set by PL5 transmitter and PL6 receiver as described in the following table RS485 transmit and receive termination values PL5 6 settings 5288 Description HI Z Selects high impedance termination Bridging mode 110R Use to terminate signal with 110W Note Do not l...

Страница 10: ...ate is selected with SW2 1 and SW2 2 as described in the following table 4407 sample rate options SW2 2 SW2 1 Sample rate 0 0 44 1KHz 0 1 32KHz 1 0 48KHz 1 1 48KHz SW1 1 SW1 2 SW1 3 SW1 4 SW2 1 SW2 SW1 SW2 2 SW2 3 SW2 4 0 0 1 1 VIDEO LOCK LOW REF Sample rate select switches ...

Страница 11: ...de 0 FADER Control via external fader 0 POT Control via on board potentiometer RV1 1 X Control via RS485 comms Notes An external fader 10kW may be connected to the control port as described in the installation section Setting PL1 to 1 assigns gain fader control to the RS485 communication protocol X don t care PL4 must be left in the NORM position and PL2 is reserved for future use 1 2 3 4 OFF ON S...

Страница 12: ...g table Audio modify options Function PL10 PL11 PL12 Stereo normal mode no modify 1 1 1 Input A both 0 1 1 Input B both 1 0 1 A B swap 0 0 1 Digital silence 1 1 0 Reserved for future use 0 1 0 Reserved for future use 1 0 0 Reserved for future use 0 0 0 1 2 3 4 OFF ON SW1 NORM FADER BOOT PL12 PL11 PL10 P 2 L P 1 L 0 1 0 1 0 1 0 1 0 1 PL4 Audio modify jumpers ...

Страница 13: ...nit may set gain automatic fades of various rates reset and monitor the status of each card individually Gain is automatically restored to 0dB after a power on reset Assign a 4407 module to RS485control by placing PL1 on the 5288 sub module to the 1 position 1 2 3 4 OFF ON SW1 NORM FADER BOOT SW2 PL12 SYSTEM RESET PL11 PL10 PL11 PL10 0 1 0 1 0 1 0 1 0 1 SW1 RS485 multi drop address switch RS485 re...

Страница 14: ...s SW1 Hex address 1 2 3 4 F 15 0 1 1 1 E 14 1 1 1 1 D 13 0 0 1 1 C 12 1 0 1 1 B 11 0 1 0 1 A 10 1 1 0 1 9 0 0 0 1 8 0 0 0 1 7 1 1 1 0 6 0 1 1 0 5 1 0 1 0 4 0 0 1 0 3 1 1 0 0 2 0 1 0 0 1 1 0 0 0 0 0 0 0 0 The reset switch SW2 sets the RS485 comms to the initial state fader at top gain 0dB and resets the AES Digital Signal Processor The reset button must be pressed after changing the address switch ...

Страница 15: ...n one transmitter enabled RS485 compatible The group poll uses this feature 4 3 Four wire and two wire operation The 4407 is a full duplex four wire device However due to the workings of the multi drop communication protocol where the controller initiates data flows the 4407 can be used as a two wire device with the following wiring modifications 1 9 10 3 TX TX X 4407 CONTROL CONNECTOR FOUR WIRE F...

Страница 16: ...ull character If more than one device replies the controller may receive an overrun framing or parity error The controller interprets any character received or any of the above error conditions as a request to send data by one of the devices The multi drop link layer only packages outgoing messages as all incoming data is of one byte length 4 5 Message layer After the controller has issued a send ...

Страница 17: ...lowing section reset byte 1 hex FD Causes the 4407 card to reset to the power up condition which is fader at the top and unity gain Bytes transmitted The following data bytes are transmitted by the 4407 after a panel poll from the link layer has been issued by the controller fader gain high 0001HHHH fader gain low 00l0LLLL Reports the fader gain status This is not the audio gain setting but a valu...

Страница 18: ... should be on at any time This byte is issued in response to a status request command and when the fade transition status changes AES data status 01000N00 The AES bit stream input signal has various status bits which are active when high Data error no input Typically with no audio signal BIT N will be set high This byte is issued in response to a status request command and when the AES input statu...

Страница 19: ...e 31 indicates that the fader is at the top position and byte 44 says that no valid AES bit stream data is present at the card inputs Byte 58 and 60 form together to report the output level gain of 0db unity gain Note This is the status of the 4407 card after a reset command on power up and when the comms reset button is pushed Set output level gain Controller Description Device response F5 Group ...

Страница 20: ...9 Request data from panel 9 32 F3 09 21 05 Fade up in one second F4 09 Request data from panel 9 34 F4 09 Request data from panel 9 31 Device response 32 indicates fade at bottom Byte 34 says that the fader is currently fading up but has not reached the top yet and finally byte 31 tells the controller that the fade is finished and at the top ...

Страница 21: ...monitoring controller module present I P 1 present audio locked SW 2 status audio locked In addition the module is programmed with the following information which can be read by the status monitoring controller Module type Module bar code Module issue no For further details of the Pro Bel status monitoring system please refer to the COSMOS status monitoring manual ...

Страница 22: ... 5V LED is lit on the 5288 sub module check that a vaild input is connected to the rear panel check that the red LOSS OF INPUT LED is not lit The output signal is corrupted check the quality of the input signal s Check Red No Ref led on 5288 is off Check Red Loss of Input 1 is off check that the red LOW REF LED on the main card is not lit check that the appropriate termination has been set check t...

Страница 23: ...icks in downstream equipment check that the reference used has the same phase and frequency as all other digital audio equipment used in the system Note It is recommended to employ a common AES11 reference for all digital audio equipment if accurate phasing to station signals is required throughout a facility The 4407 should meet the timing requirements of AES11 under these conditions 4407 Status ...

Страница 24: ...dicators LED label Meaning when lit NO REF Lights red when I P 1 is not present or when channel 1 error flag ERF is set 5V Lights green if 5V rail is present D5 NO REF D6 5V SW2 SYSTEM RESET PL10 PL10 0 1 0 1 5288 status indicators ...

Страница 25: ...d to AES3 id Termination High 75W or 110W Outputs Number and type 8 transformer coupled balanced to AES3 1992 or unbalanced to AES3 id Performance Sample rate 32 44 1 or 48kHz Word length 20 bits Audio modify Attenuation from 0 to 12dB Channel A to both Channel B to both Channel A swapped with channel B Digital silence Fader law Logarithmic i e linear dBs with time Time specified is from full gain...

Страница 26: ... RS485 38 4kBaud 4 or 2 wire duplex multi drop bus for gain control automatic fading and remote status monitoring 8 data bits 1 stop bit even parity Impedance Selectable for 110W or bridge Temperature range Operating 0 to 40 C Storage 10 C to 70 C ...

Страница 27: ...udio Sample Rate Converter Technical Manual 27 8 Ordering Information ICO 4407 2B00 Digital Audio Sample Rate Synchroniser balanced I O 20 mm ICO 4407 3U00 Digital Audio Sample Rate Synchroniser unbalanced I O 30 mm ...

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