DCS 954 User Manual page 60

dCS 954 User Manual
dCS Ltd
Manual part no: DOC136954 iss 2B1
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Responds -> [ACK 15 seconds][7], requested mode
Transmit -> [8][DSD_MODE], to change mode to PCM of unit 8
Responds -> [ACK 15 seconds][8], requested mode
Transmit -> [9][DSD_MODE], to change mode to PCM of unit 9
Responds -> [ACK 15 seconds][9], requested mode
2) Command ADCs 2, 3, 4 and 5 to change mode, the units may take up to
15 seconds to complete this command (if the previous mode had been
DSD the FPGAs need to be re-loaded, which takes time). There is no
need to wait prior to moving on to step 3
Transmit -> [2][DSD_MODE], to change mode to PCM of unit 2
Responds -> [ACK 15 seconds][2], requested mode
Transmit -> [3][DSD_MODE], to change mode to PCM of unit 3
Responds -> [ACK 15 seconds][3], requested mode
Transmit -> [4][DSD_MODE], to change mode to PCM of unit 4
Responds -> [ACK 15 seconds][4], requested mode
Transmit -> [5][DSD_MODE], to change mode to PCM of unit 5
Responds -> [ACK 15 seconds][5], requested mode
3) Check DACs for mode change. This command allows the Transmitter to
check the mode of the DACs. If a unit has not changed the transmitter
should go back to step 1 and repeat the command.
Transmit -> [6][REQUEST_DSD_MODE]
Response -> [ACK immediate][6], actual mode
Transmit -> [7][REQUEST_DSD_MODE]
Response -> [ACK immediate][7], actual mode
Transmit -> [8][REQUEST_DSD_MODE]
Response -> [ACK immediate][8], actual mode
Transmit -> [9][REQUEST_DSD_MODE]
Response -> [ACK immediate][9], actual mode
4) Check ADCs for mode change. This command allows the Transmitter to
check the mode of the ADCs. If a unit has not changed the transmitter
should go back to step 2 and repeat the command
Transmit -> [2][REQUEST_DSD_MODE]
Response -> [ACK immediate][2], actual mode
Transmit -> [3][REQUEST_DSD_MODE]
Response -> [ACK immediate][3], actual mode
Transmit -> [4][REQUEST_DSD_MODE]
Response -> [ACK immediate][4], actual mode
Transmit -> [5][REQUEST_DSD_MODE]
Response -> [ACK immediate][5], actual mode
5) Command Master Clock to change frequency. Allow the system time to
settle after this command with no RS232 activity, three seconds should be
sufficient.
Transmit -> [SEL_FS], change to 96k
Responds -> [ACK 3 seconds], requested frequency
Wait for 3 seconds
Check Master Clock has changed frequency. If it has not go back to step
5.
Manual for Standard Software Version 1.5x
Page 60
June 2000
file 135954ma2b1.pdf available from website
email to: more@dcsltd.co.uk
web site: www.dcsltd.co.uk