Sercel SN388 Installation Manual - page 11
INTRODUCTION
CENTRAL CONTROL UNIT (CCU)
0311267
Issue : April 1998
1-5
APM functions also include :
-
noise editing (Zeroing/Clipping/Diversity Stack)
-
correlation and stacking.
The following boards are used in both the APM and PAM :
LIO
:
Line Input/Output interface
LCP
:
Line Controller Processor
MPM
:
Main Process Memory
AXC
:
Auxiliary Line Controller
TTC
:
Tape Transport Controller
TTS
:
SCSI Tape Transport controller
Two more boards are used in the APM :
NEP
:
Noise Elimination Processor
FTP
:
Fourier Transform Processor
Configuration
Boards
AXC
LIO
LCP
MPM
NEP
FTP
TTC or TTS
1200 ch PAM
1
1
1
1
(MM16-1)
-
-
1
480/30 ch APM
1
1
1
3
(MM16-1)
1
1
1
600 ch APM
1
1
1
3
(MM16)
1
1
1
1200 ch APM
1
1
1
3
(MM16)
2
2
1
Table 1-1 SN 388 PAM/APM board configurations
Every effort has been made in designing the hardware of the PAM and APM to
enhance performance while reducing size :
•
Zero dead time operation (unless limited by tape drive performance). The
1200-channel PAM and APM modules, organized around a pipe-line
architecture, achieve such a speed that vibrator drivers and dynamite
shooters will not need to wait for the acquisition system to be ready.