Recorders and Playback Systems Catalog(2013)

Recording and Playback Dataflow
Recording Dataflow
Shown in this diagram is the dataflow
during a typical recording session. The
Pentek Transceiver Board contains a 2-channel
200 MHz A/D for digitizing two input
analog channels. The digitized outputs are
downconverted by the two DDCs (Digital
Downconverters) and moved on to the PC
system memory via the PCI Express interface.
Both the DDCs and the PCIe interface
are implemented in the board’s FPGA.
Data then moves from the system memory
to the Recording System RAID Controller
and is then recorded to disk via the SATA
interface. DMA controllers conduct all data
transfers, bypasssing the CPU for guaranteed
real-time operation.
Pentek Transceiver Board
TIMING BUS GENERATOR
Clock / Sync / Gate / PPS
Sample Clk/Reference Clk In
Gate/Trigger/Sync/PPS
PCI Express
Interface
DDC
#1
DDC
#2
Digital IF
Channel # 1
Digital IF
Channel # 2
A/D Clock/Sync Bus
200 MHZ
16 Bit A/D
200 MHZ
16 Bit A/D
RF/IF Analog Input
Channel # 1
RF/IF Analog Input
Channel # 2
2 Channels of Digital Data
Being Transferred Over A
PCI Express Interface
2 Channels of Digital Data
Being Transferred Over A
SATA Interface
PCI Express Interface
PCI Express Interface
System Memory
CPU
Recording System SBC/MB
RAID
Controller
SATA
Interface
Recording System
RAID Controller
Single
Volume
RAID 0
Storage
Array
Playback Dataflow
During a playback session, data stored
on disk moves through the SATA interface
of the Playback System RAID Controller.
From there, data is passed to the PC system
memory through the PCIe interface and
then to the Pentek Transceiver board through
its PCIe interface, all via hardware DMA
controllers for real-time operation.
This board also contains DUCs (Digital
Upconverters) which upconvert the data to
the original IF frequency bands. Two 800 MHz
D/As convert the data to analog form and
provide signals that are identical to the
analog signals that were originally recorded.
These can be further analyzed with any
Windows-compatible analysis software.
Pentek Transceiver Board
TIMING BUS GENERATOR
Clock / Sync / Gate / PPS
Sample Clk/Reference Clk In
Gate/Trigger/Sync/PPS
PCI Express
Interface
DUC
#1
DUC
#2
Digital IF
Channel # 1
Digital IF
Channel # 2
D/A Clock/Sync Bus
800 MHZ
16 Bit D/A
800 MHZ
16 Bit D/A
RF/IF Analog Output
Channel # 1
RF/IF Analog Output
Channel # 2
2 Channels of Digital Data
Being Transferred Over A
PCI Express Interface
2 Channels of Digital Data
Being Transferred Over A
SATA Interface
PCI Express Interface
PCI Express Interface
System Memory
CPU
Playback System SBC/MB
RAID
Controller
SATA
Interface
Playback System
RAID Controller
Single
Volume
RAID 0
Storage
Array
Pentek, Inc.
One Park Way ◆ Upper Saddle River ◆ New Jersey 07458
Tel: 201 . 818 . 5900 ◆ Fax: 201 . 818 . 5904 ◆ Email: info@pentek.com
www.pentek.com