
6. About Hardware
46
VNA-300M-PCI
Block Diagram
Figure 6.1 is a circuit block diagram of this product.
SMA
IN
SMA
OUT
SMA
EXT REF
BNC
TRG
ATT
Port A
ATT
Port R
LPF
LPF
A/D
Amp
MIX
MIX
Amp
RF
Oscillator
Local
Oscillator
ATT
Oscillator
(10MHz)
Timing
Controller
A/D
Amp
FPGA
CPU
Memory
PCI BUS
VGA
Figure 6.1. Block Diagram