DP120F/DP125F Dialing and Communication Procedure
9-18
March 2000 © TOSHIBA TEC
b-3)
Equalizer and echo canceller training (Phase 3)
To optimize the filters such as an equalizer, the training (adjustment) is performed
according to the parameters set in phase 2.
•
Transmitter
b-4)
Final training (Phase 4)
The settings such as the maximum value for the data rate, selection of the trellis
encoder, and data rate which can be supported, are made.
•
Calling/receivers
Signal name
S signal
S signal
PP signal
TRN signal
Abbreviation
S
S
PP
TRN
Meaning
Short training
The modem of receiver uses it for
training the equalizer.
It is used for determining the trans-
mission rate by the receiver.
Remark
S is a signal that makes a
transition from phase S.
Signal name
PPh signal
ALT signal
Modulation
parameter
E sequence
Abbreviation
PPh
ALT
MPh
E
Meaning
The modem of other unit uses it
for training the equalizer.
——
It indicates the parameters used
for image transmission such as the
maximum data signaling rate, type
of trellis coding, and type of pre-
coding.
——
Remark
20-bit sequence of “1”s in bi-
nary
Summary of Contents for DP120F
Page 1: ...PLAINPAPERFACSIMILE File No 31200001 R0112216901 TTEC ...
Page 401: ...DP120F DP125F Circuit Description 7 92 March 2000 TOSHIBA TEC 07 05 00 Fig 7 5 1 ...
Page 656: ...DP120F DP125F Troubleshooting 11 44 March 2000 TOSHIBA TEC ...
Page 700: ...DP120F DP125F Appendix 12 2 March 2000 TOSHIBA TEC 1 2 Error Count List ...
Page 701: ...March 2000 TOSHIBA TEC 12 3 DP120F DP125F Appendix 1 3 Function List for Maintenance ...
Page 702: ...DP120F DP125F Appendix 12 4 March 2000 TOSHIBA TEC 1 4 Drum Unit ...
Page 703: ...March 2000 TOSHIBA TEC 12 5 DP120F DP125F Appendix 1 5 Memory Dump List ...
Page 706: ...SHUWA SHIBA PARK BLDG A 2 4 1 SHIBA KOEN MINATO KU TOKYO 105 8524 JAPAN ...