Appendix F
Page 210
When downloading a file to the ADSL noise card, the following error messages may be
received:
Too many pgm filter data
Too many FIR coefficients
Too many FIR taps
When any of these errors occurs, the crosstalk noise will not be generated properly. Note
that the message will be preceded by <01> when programming an ADSL noise card in slot
A and by <02> when programming a card on side B.
Once all the FIR coefficients have been received, the ADSL noise card will automatically
get out of the “download” mode and will be ready to accept any other commands
(e.g. level command).
When querying the type (i.e. :sourcea:xtalka:type?), the response will be “External”
after the first :sourcea:xtalka:program:data xx,yy,zz,… command has been received.
If a “type” command is sent (e.g. :sourcea:xtalka:type:t1.601), the user-defined shape
will stop being generated and the selected one will become active. To re-enable the user
defined shape, re-do the entire programming sequence.
If for any reason the process needs to be cancelled when programming the user shape,
send the :sourcea:xtalka:type OFF command to avoid using incomplete data. When
doing another programming, sending the “start” command will reset the appropriate
pointers.
Issuing an *ESR? command on a regular basis (e.g. after every command) ensures that
there is no command or syntax error. If there is no error, the controller will send back “0”.
Refer to section 8.1.2 for other error codes.
F.2
Captured Programming Commands
:SOURCEA:XTALKA:PROGRAM:START
*ESR?
:SOURCEA:XTALKA:PROGRAM:MINIMUM -80
*ESR?
:SOURCEA:XTALKA:PROGRAM:MAXIMUM -30
*ESR?
:SOURCEA:XTALKA:PROGRAM:DATA 81 10 01 1D 21 36
Summary of Contents for DLS 400A
Page 1: ...Revision 0 21 September 1999 TestW rks Operating Manual DLS 400A H N HN Wireline Simulator ...
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Page 63: ...ADSL NOISE GENERATOR DESCRIPTION Page 51 Figure 6 5 Cook Pulse Figure 6 6 ADSL Impulse c1 ...
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