Model 6232 (Pentek Inc)
Model 6232 is a general-purpose 32-channel narrowband digital receiver VIM-4 module. It attaches to VIM-compatible processor boards and connects directly to all four processors.
*Four 16-bit digital inputs on two FPDP connectors *Dual Field Programmable Gate Arrays (FPGAs) *Front panel FPGA I/O *All downconverters can select any of the four inputs *40 MHz input clock rate (ƒs) *2 kHz to 1 MHz output bandwidths for ƒs = 40 MHz *Front panel clock/sync bus for board synchronization
The Model 6232 accepts four 16-bit
digital inputs on two front panel FPDP
connectors supporting data rates up to
40 MHz. Data from each 16-bit input flows
into a FIFO to allow synchronization, and
is in turn transferred to the digital receiver
section. Data from any of the four inputs
can be directed to any of the 32 receiver
channels or directly to the FPGAs.
Each FPDP connector is clocked individually.
Clock information is sent to a controller
for data clocking and sync.
The 6232 includes eight Graychip
GC4016 quad narrowband digital
downconverter chips. The maximum input
sampling rate for the GC4016 is 80 MHz.
Each device includes four independently
tuned channels capable of center frequency
tuning from DC to 20 MHz, and with output
bandwidths ranging from 2 kHz to 1
MHz (for 40 MHz sample clock).
Each GC4016 accepts up to three 16-bit or
four 14-bit parallel inputs from the input
FIFOs. Internal crossbar switches allow all 32
downconverter channels on the board to
select any of the four inputs for flexible
The front panel clock and sync bus allow
one 6232 to act as a master, driving the
sample clock out to a front panel cable bus
using LVDS differential signaling. Multiple
slaves can then be clocked synchronously
with the master. Additional sync lines on
the bus allow synchronization of the local
oscillator phase, frequency switching, decimating
filter phase, and FIFO data collection
on multiple 6232’s.
Pentek Inc · Hardware Partner
1 Park Way
Saddle River, NJ 07458
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